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inch diameter steel core. The steel core for the tank interior anodes shall protrude from one end and shall be of sufficient length to permit attachment of a lead wire.
B. Each anode shall conform to the following chemical composition:
1. Chemical Composition
Aluminum
Manganese
Iron
Nickel
Copper
Total Other Impurities
0.010% Max.
0.5-1.3% Max.
0.03% Max.
0.001% Max.
0.02% Max.
0.30% Max.
Magnesium Balance
C. Anode Lead Wire: No. 10 AWG/HMWPE crimped and soldered to the 1/8-inch steel core, making a mechanically secure connection
D. Soldered Connection and Core: Seal entirely with heatshrink sleeve and cap.
2.03 CABLE
A. Anode cable: Stranded single conductor copper, #10 AWG/HMWPE.
B. Anode header cable: Stranded single conductor copper, # 8 AWG/HMWPE.
C. Reference Electrode Lead Wire: Stranded single conductor copper, No. 14 AWG/RHHRHW or HMWPE with color as indicated on Drawings.
D. Reference Electrode Header Wire: Stranded single conductor copper, No. 14 AWG/THHN or HMWPE with color as indicated on Drawings.
E. Control cable: Stranded single conductor copper #12 AWG/THHN or HMWPE with color as indicated on Drawings.
F. Drain cable: Stranded single conductor copper, #8 AWG/HMWPE.
2.04 REFERENCE ELECTRODE
A. The permanent reference electrode used to measure the tank-to-water potentialshall be designed to remain stable in a continuous immersion in the water for a minimum of 10 years with only minimal maintenance as recommended by the manufacturer. The reference electrode shall be a copper/copper-sulfate type of reference electrode and shall have a potential drift of less than 10 mV.
B. The permanent reference electrode shall be equipped with a 4-inch diameter plastic bumper.
1. STAPERM, Model CU-2-FW as manufactured by GMC
2. Permacell Model 801, as manufactured by Corrpro Companies Inc.
3. Reference electrode lead cable per Paragraph 2.03.C.
4. Approved equal
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2.05 GALVANIZED STEEL CONDUIT AND FITTINGS:
A. Conduit and fittings shall be hot-dipped galvanized steel and shall conform to ANSI Specification C80.1 for Rigid Metallic Conduit.
2.06 ANODE SUSPENSION SYSTEM:
A. The anodes shall be suspended vertically from the roof of the tank as shown on the drawings. Hand hole covers and mounting devices shall be provided so the anodes may be replaced or inspected without entering the tank. The hand hole assemblies shall consist of a 5-inch diameter hole and a 6-inch diameter stainlesssteel cover plate, rubber grommet and a stainless steel clamping bar held in place by a 1/2-inch stainless steel bolt and nut. Hand holes shall be cut before the tank is coated. Clevis assembly shall be stainless steel with stainless steel fasteners as shown on the drawings.
2.07 ANODE METERING SHUNT:
A. The anode metering shunt shall be 0.1 ohm, 6 amp capacity with 1 percent accuracy.
2.08 CURRENT ADJUSTING RHEOSTAT:
A. A current adjusting rheostat shall be provided in the anode test station as shown in the drawings. The rheostat shall be rated for 100 ohm/100 watts.
2.09 CABLE SPLICING MATERIALS
A. Insulation of Splices: Buried splices shall be sealed with an inner wrap of rubber splicing tape such as Scotch 130C or equal and an outer wrap of PVC tape such as Scotch 33+ or approved equal.
B. Wire Connectors: One-piece, tin-plated crimp-on lug connector or two copper split bolt connectors as manufactured by Burndy Co., Thomas and Betts. No steel hardware is allowed.
2.10 ANODE TEST STATION:
A. The anode test station shall be a NEMA Type 4X, fiberglass reinforced plastic (FRP) box.
The box shall have stainless steel or fiberglass hinges. The test station shall be sized to accommodate the layout as shown in the drawings. A cathodic protection potential/anode current voltmeter shall have a push to read button connecting the permanent reference cell to the digital voltmeter with an internal resistance of not less than 10 megaohms-volt and a reading of not less than a 100 watt 100 ohm, connected between the anode header cable and the structure lead wire. The test station shall have a calibrated 0.1 ohm shunt placed in the anode circuit and shall be connected to a potential meter via a push to read switch so the anode current output can be indicated on the test station digital voltmeter with a reading of not lessthan 1.99 amps. The system ground shall be #8 AWG stranded copper HMWPE insulation. The potential test circuit shall have an independent structure ground of AWG #12 stranded copper cable per Paragraph 2.03.E.
1. Sacrificial Anode Control Panel, as manufactured by Corrpro Companies Inc.
2. Junction Box, Sacrificial Anode Type, as manufactured by Integrated Rectifier Technologies, Inc.
3. Approved equal
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2.11 COATING MATERIALS:
A. Coating materials for coating repairs shall match the existing coating and be sealed in containers that plainly show the designated name, formula or specification number, batch number, color, date of manufacture, manufacturer’s directions and name of manufacturer, all of which shall be plainly legible at the time of use.
2.12 CABLE-TO-STRUCTURE CONNECTION:
A. Exothermic welding
1. The structure cable connection to the steel tank may be accomplished utilizing an exothermic welding process as shown on the drawings. Each cable shall be fitted with a coppersleeve for accomplishing the weld and cartridge, sleeves and molds for each weld shall be furnished by the same manufacturer. All materials for welding shall be sized and in accordance with recommendations in manufacturers' literature.
2. Manufacturers, or equal
a. “Cadweld" by Erico Products, Inc.,
b. "Thermoweld" by Continental Industries, Inc.
B. Pin brazing
1. The structure cable connection to the steel tank may be accomplished by pin brazing. Pin brazing equipment based upon Electric-arc silver soldering using a specially designed portable Pin Brazing unit, a hollow brazing pin containing silver solder and flux shall be utilized for cable-to-structure connections. The unit may be battery powered or powered with a welding generator. Battery pack, pins with fuse wire, ceramic ferrules and cable lugs shall be in accordance with the manufacturer's recommendations for each wire size and pipe or fitting size and material. Brazing materials and equipment shall be the product of a single manufacturer. All material and equipment utilized for brazing shall be from one manufacturer.
a. BAC - GMC Electrical, Ontario, CA.
b. Farwest Corrosion Control, Hayward, CA.
2.13 CABLE-TO-TANK CONNECTION COATING MATERIAL:
A. Epoxy shall be used for sealing the cable to tank connections.
B. Manufacturers, or equal
1. ProPoxy® 20, manufactured by Hercules
2. Aquatapoxy® A-6, manufactured by Cohesant Materials
3. Durcon-164, by Duriron Company
4. Scotchcast Resin No. 4, by 3-M Company
5. CC-1 Potting Compound, by PSI Products.
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PART 3 - PRODUCTS
3.01 GENERAL
A. All materials, workmanship and installation shall conform to all requirements of the legally constituted authority having jurisdiction. These authorities include, but are not limited to, the latest revision of the State of California, Department of Industrial Relations, Division of Industrial Safety, Electrical Orders; The National Electric Code, General Construction Safety Orders of the Industrial Accident Commission; and all other applicable State, County, or City codes and regulations. Nothing in the drawings or specifications is to be construed to permit work not conforming to these regulations and codes. Where larger size or better grade materials than required by these regulations and codes are specified, the specifications and drawings shall have precedence.
3.02 MATERIAL DELIVERY, STORAGE AND PROTECTION
A. All materials and equipment to be used in construction shall be stored in such a manner to be protected from detrimental effectsfrom the elements. If warehouse storage cannot be provided, materials and equipment shall be stacked well above ground level and protected from the elements with plastic sheeting or other method as appropriate.
3.03 DISINFECTION:
A. The tank is operational and is full of potable water. Special care shall be exercised in order to prevent any foreign material from falling inside the tank during installation. All tools and materials introduced into the tank shall be disinfected according to AWWA C652-11.
3.04 CABLE-TO-STRUCTURE CONNECTIONS
A. Exothermic welded connections
1. Cable-to-tank connections shall be installed in the manner and at the locations shown on the drawings. Coating materialsshall be removed from the tank surface over an area just sufficient to make the connections. The surface shall be cleaned to white metal by grinding or filing prior to welding the conductor. Grinding with resin impregnated wheels shall not be allowed. The conductor shall be welded to the tank chime by the exothermic process with a copper sleeve fitted over the conductor, and only sufficient insulation shall be removed from the conductor to allow placing in welding mold. After the weld has cooled, allslag shall be removed and the weld shall be tested with a sharp blow from a 22 ounce hammer to assure proper metallurgical bond. All defective welds shall be removed and replaced. All exposed surfaces of copper and steel shall be covered with a minimum thickness of ¼ in. of insulating materials.
B. Pin brazed connections
1. Cut wire with a wire cutter to prevent deforming the wire ends. Do not deform the wire. Remove only enough insulation from the wire to allow the brazed connection to be made. The surface of the steel structure shall be ground or filed to a bright, shiny, clean and dry surface before brazing the wire connection. The attachment of the wire to the structure shall be made as indicated on the drawings. The wire isto be held at a 90 degree angle to the surface when brazing.
Only one wire is to be attached with each braze. All wire to structure braze shall be a minimum of 6 inches apart. As soon as the braze has cooled, the brazed
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connection shall be tested for strength by striking a sharp blow with a two-pound hammer while pulling firmly on the wire. All unsound brazed connections are to be redone and retested. Assure that the area to be coated is thoroughly cleaned by wire brushing. All exposed surfaces of copper and steel and surrounding surface shall be cleaned of contaminants and covered with a minimum thickness of 1/4-inch of insulating materials.
3.05 ANODE TEST STATION
A. Test stations shall be installed at locations designated on the drawings. Exact location of test station shall be determined in the field. The terminal end of each cable shall be identified with the structure identification using the permanent cable identification tags.
The test station shall be located on the exterior of the tank next to the tank sample ports for convenient operator serviceability approximately 4 feet off the ground.
3.06 MAGNESIUM ANODES
A. The magnesium anodes shall be suspended vertically from the tank roof as shown in the drawings. The hand holes shall be cut into the tank roof. After cutting the holes in the roof, burrs and sharp edges of the hole shall be removed by grinding. Care shall be taken to minimize damage to the tank coating. The cut edges of the roof holes shall be repaired prior to coating of the tank.
3.07 CABLE SPLICES
A. Anode to header cable splices shall be with a proper sized Thomas & Betts C tap crimp connector or two copper split bolts. The connections shall be double half wrapped with rubber filler tape and then wrapped with not less than a double half wrap of quality electrical tape. The splices shall be made in such a way as to insure against moisture intrusion.
B. All splices shall be located above the high water line.
3.08 SYSTEM START UP
A. After the system is installed and the tank is filled, the cathodic protection installer shall provide start-up service which includes energizing, testing, and adjusting the system for optimum performance of the cathodic protection system. This start-up service shall be coordinated with the City or hisrepresentative. Contractorshall contact the City in writing 7 days before planned start-up of the Cathodic Protection system so the City can have the City’s Corrosion Engineer at the start-up to verify test measurements and proper system operation.
B. The system shall be tested by a State of California Registered Professional Corrosion Engineer, retained by the Engineer, to assure conformance with the specifications.
Testing shall include proper installation of the anodes, cables and test stations, and potential measurements on protected surfaces of the tank. Protection levels shall satisfy the criteria per NACE Standard SP-0196-2011. Upon completion of the tests, a detailed written report shall be submitted describing any deficiencies detected. Any and all deficienciesshall be corrected by the Contractor at his/her cost and retested prior to final acceptance. All retesting shall be at the Contractor's expense.
C. Once the cathodic protection system is checked and certified by the Project’s Corrosion Engineer (JDH Corrosion Consultants, Inc. (925)927-6630), the system shall be dePage 533 of 1436 JDH – August 2024
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energized and remain off until the one-year warranty coating inspection is completed.
After the warranty inspection the system shall be re-energized and tested by the City’s Corrosion Engineer to ensure adequate protection of the tank internals per relevant NACE standards.
END OF SECTION
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13208 - 1
Welded Steel Tank
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 13208
WELDEDSTEEL TANK
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Furnish all labor, material, equipment, tools and services required for the design, fabrication, erection, painting and testing of a ground level, welded steel water storage tanks, and accessories.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section
1. Section 01330 – Submittals
2. Section 01560 – Environmental Controls
3. Section 03600 – Grout
4. Section 09960 – High Performance Coatings
5. Section 11500 – Disinfection
6. Section 13112 – Tank Internal Cathodic Protection System
1.03 SUBMITTALS
A. Comply with Section 01330.
B. Product Data:
1. Hangers, pipe and equipment supports.
2. High-strength bolts.
3. Stainless steel items.
4. Manufactured items, including access hatches, vents and safety devices.
5. Erection plan.
6. Electrode manufacturer’s data.
C. Shop Drawings:
1. Fabrication and erection drawings for steel tanks, foundations and accessories indicating size and thickness of members including anchor bolt layout and embedment and details, assembly drawings, and welding details. Show detail dimensions and quantities and details of construction and erection as prepared by the tank manufacturer. Detailed drawingsfor the tanks and accessories signed and stamped by a Civil or Structural Engineer licensed to practice in the state where the tanks will be constructed.
2. Design calculations for tanks and accessories.
3. Depth versus volume calibration table for the tanks in units of inches, feet and gallons.
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D. Structural Calculations:
1. A single complete set of structural calculations for each welded steel tank, ringwall foundation, and roof signed and stamped by a registered professional Civil or Structural Engineer licensed to practice in the state where the tank will be constructed. Submit calculations for tank shell, shell thickness, compressive stress in each ring under wind or earthquake loading combined with dead and water load. Submit calculations for welded joints.
2. Submit calculations for the amount of reinforcement for openings in the tank shell or floor including pipe connections and manholes.
E. Manufacturer’s Certifications:
1. Tank design, including welded joint details and inspection personnel data.
2. Tank fabrication, including mill tests and shop inspection report.
3. Tank erection, including field inspection and testing report.
F. Quality Assurance:
1. Welder performance qualification test records “welders certification”.
2. Written Welding Procedure Specifications (WPSs) in accordance with AWS D1.1 requirements for each different welded joint proposed for use whether prequalified or qualified by testing.
3. Procedure Qualification Record (PQR) in accordance with AWS 1.1 for all procedures qualified by testing.
1.04 DESIGN REQUIREMENTS
A. Tank design and manufacture shall be in accordance with the latest editions of the following standards and codes, as well as the criteria noted on the Drawings.
1. American Water Works Association (AWWA) D100, Welded Steel Tanksfor Water Storage;
2. American Petroleum Institute (API) 60, Welded Steel Tanks for Oil Storage;
3. California Building Code (CBC); and
4. California Code of Regulations (CCR), Title 8: Industrial Safety.
B. Seismic Requirement: The tank shall be a mechanically anchored tank which has either anchor bolts or anchor straps to anchor the tank to the foundation. Self-anchored tanks that rely on the inherent stability of the self-weight of the tank and contents to resist overturning forces shall not be permitted.
C. Design Criteria
1. Seismic design: Determine seismic loads based on the coefficients provided in AWWA D100-05, Section 13, and 2010 CBC, and also site-specific response spectra. Refer to Drawings:
a. Apply horizontal and vertical accelerations simultaneously. b. Hoop stress combination: Root mean square method.
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c. Pressure stability: Check with tank full and empty.
2. Tank anchor system: Resist tension from seismic overturning moment (AWWA D100 equation 13.8), without any reduction for vertical loads. a. Design anchors for 1/3 stress increase over basic allowable stress. b. Design anchor connections at basic allowable stresses.
3. Construction loads: Distribute roof concentrated loads so the specified uniform live load is not exceeded. Provide roof shoring where necessary.
4. Roof
a. Minimum thickness 3/16-inch.
b. Design purlins and rafters for seismic water sloshing where it will occur. c. Provide continuousfillet welds all around lapped surfaces at all purlin and rafter connections and beam supports.
d. Paint contact surfaces between roof plates and rafters.
5. Roof Supports
a. Designed in accordance with AISC (ASD).
b. Pipe or tubular columns, hermetically sealed.
c. Roof rafters shall be placed above the top capacity level. d. Paint contact surfaces between roof plates and rafters.
6. Corrosion Allowance: 1/16-inch.
7. Roof-to-Shell Joint
a. For cone roofs with knuckle joint provide butt-welded joint at the base of the knuckle and continuous fillet welded lapped plates, both inside and outside, at the top of the knuckle. The remainder of the roof plates shall be welded on the top-side only with a continuous full-fillet weld on all seams.
8. Shell Circumferential Joints
a. Complete penetration butt-welded joints.
b. Vertical joints in adjacent shell courses shall not be in alignment.
9. Column Bases: Design to distribute column load plus water pressure on plating without exceeding soil bearing pressure.
10. Bottom Plates
a. Bottom plate thicknessshall be in accordance with AWWA D100 plus 1/8- inch.
b. Bottom plate joints shall be lap-welded on the top side only with a continuous full-fillet weld on all seams.
1.05 QUALITY ASSURANCE
A. General:
1. Demonstrate that the tank manufacturer has been regularly designing, fabricating and erecting similar welded steel tanks for at least 10 years.
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2. Stamp and sign all shop drawings, calculations and welded joint details by a Civil Engineer registered in the state where the tank will be installed.
3. Supply all new materials and fabricated items.
4. Verify adequacy of tank foundation.
5. The Contractor is responsible for preparing and submitting written Welding Procedure Specifications (WPSs). WPSs for each joint type shall indicate proper AWS qualification and be available where welding is performed. WPSs shall be included with any shop drawings referencing welds. WPSs shall include the manufacturer and specific electrode.
B. Testing Program:
1. Qualification of Weld Procedures: AWWA D100.
2. Qualification of Welders: AWWA D100.
3. Shop and Field Weld Inspection: AWWA D100. If Section 14 applies, retain a Certified Welding Inspector.
4. Weld Inspection Procedures: AWWA D100.
5. Tank Bottom Weld Testing: AWWA D100.
6. Tank Water Tests: AWWA D100.
PART 2 - PRODUCTS
2.01 TANK
A. Material: Verify that satisfactory mill test reports are available on all steel.
B. Fabrication
1. In accordance with AWWA D100.
2. Fabricate and assemble in the shop to the greatest extent possible.
3. Shape all members correctly, with no kinks, twists, dents or other blemishes prior to erection. Evenly spring all curved work.
4. Make exposed edges free of burrs and sharp edges. Make corners rounded or chamfered.
5. Shop prime all steel items that are not galvanized or epoxy-coated, with material that is compatible with the finish coat.
6. Stainless Steel Items:
a. Use the proper type of stainless steel electrodes or welding rods complying with AWS D10.4.
b. Remove by grinding and polishing, all scratches, marks, pits and other blemishes on exposed surfaces.
c. Use grinding wheels and other toolsthat have never been used on carbon steel.
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C. Report: Provide a shop inspection report including mill tests, radiographs, and inspection records, before tank erection is started.
D. Welding
1. Verify welders are qualified.
2. Verify that weld procedures are followed.
E. A tank bearing pad shall be installed on top of the concrete encasements and column foundations as shown on the Drawings. The bearing pad shall consist of asphalt impregnated cellular fibers and shall be Fibre Expansion Joint as supplied by W.R.
Meadows, Inc. or approved equal.
F. Nonshrink, non-metallic grout shall be installed on top of the concrete ringwall foundation beneath the tank bottom plates as shown on the Drawings. The nonshrink, non-metallic grout shall be per Section 03600.
2.02 TANK ACCESSORIES
A. General: Provide each tank complete with all pipe connections, access openings, nozzles, taps, drains and other accessories as shown on the Drawings or required herein. All accessories shall conform to the AWWA D100 and as specified.
B. Stainless Steel Items: Provide AISI Type 304 material, unless Type 316 is specifically specified.
C. Shell Manholes: Two 30-inch-diameter manholes per tank located in the shell and centered 36 inches above the tank bottom. Provide suitable means to hold the manhole covers in the open position. Hinge shall be loose, so that easy bolting is possible. Hot-dip galvanize after fabrication.
D. Piping and Pipe Connections
1. Nozzle Connections: (Larger than 2-inch)
a. Pipe: ASME A53 Schedule 40
b. Flanges: AWWA C207, Class B
2. Nozzle connection: (2-inch and smaller): Forged steel 3000# Full Coupling, threaded ASME B16.11.
3. Accessory Piping:
a. Pipe: ASME A53 Schedule 40
b. Fittings: Fittings per AWWA C208 fabricated from pipe sections of Item 1, above, except that elbows shall be wrought steel, standard weight, long radius (R=1.5 D) per ASTM A234 unless otherwise noted on Drawings. c. Flanges: AWWA C207, Class B
4. Lining: Liquid Epoxy, AWWA C210
5. Coating
a. Internal Piping: Liquid Epoxy, AWWA C210.
b. External Piping: Section 09960.
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E. Vents
1. Provide 2-foot-diameter, welded steel center roof vent with screened opening, removable top.
2. Provide and design perimeter roof vents for a maximum tank inflow/outflow of 1,500 gpm.
3. Provide screens over all vents. Manufacturer shall verify that adequate venting is provided to equalize pressure and prevent buckling of the tank. Screens shall be designed to pop out into the interior of the tank if the internal tank pressure becomes large enough to cause buckling of the tank shell. Maximum tank in/out flow for venting design is noted above.
4. The screen shall consist of an 18 x 18 Type 316 stainless steel mesh, 0.017 wire diameter or favorably reviewed equal.
F. Zinc Coatings
1. Bolts, Washers and Nuts: Electrodeposited zinc-coated to conform to ASTM B633.
2. Other Galvanized Items: Hot-dipped zinc-coated to conform to ASTM A123.
G. Miscellaneous
1. Provide connection in drain connection for level (pressure) transmitter.
2. Provide cathodic protection for the tank. See Drawings and Section 13112.
PART 3 - EXECUTION
3.01 PREPARATION
A. Develop a written erection plan and welding sequences for the tank’s bottom, side shell, and roof plating.
B. Develop this plan and sequences to minimize welding distortions and kinks between plates.
C. Furnish this plan and sequences to the erection crew.
3.02 ERECTION
A. AWWA D100 and also:
1. Comply with erection plan and welding sequences.
2. Follow qualified weld procedures.
3. Use qualified welders.
4. Provide complete penetration butt welds at all side shell joints.
5. Remove all evidence of any welding of temporary erection devices.
6. Stainless steel items:
a. Use the proper type of stainless steel electrodes or welding rods complying with AWS D10.4.
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b. Remove by grinding and polishing, all scratches, marks, pits and other blemishes on exposed surfaces.
c. On stainless steel items, do not use grinding wheels and other tools that have previously been used on carbon steel.
3.03 FIELD QUALITY CONTROL
A. AWWA D100, and also:
1. Provide 24 hours notice of all testing to Engineer.
2. Provide all testing equipment and satisfactory access to the work being inspected.
3. Perform and evaluate all radiographs promptly, so any repairs can be made and re-evaluated without delay of the erection.
4. The Engineer will be the sole judge of compliance with the quality of work specified herein or in AWWA D100.
5. Repair all leaks and retest by the same method that discovered the leak.
B. Tank Welding:
1. If AWWA D100 Chapter 14, Alternative Design Basis, applies retain a Certified Welding Inspector to be present during all inspections and testing and to specify the test locations.
2. Inspection by trepanning, air carbon arc gouging and removal of sectional segments will not be permitted.
C. Tank Bottom: Test all joints by the vacuum method after erection and prior to painting.
D. Tank Bottom and Side Shell: Test by the water method, after erection and prior to painting. The City will provide the water.
E. Report: Provide a field inspection report, including radiographs and inspection records before acceptance of each tank by the City.
3.04 PAINTING
A. Perform interior and exterior cleaning, preparation, and painting in accordance with AWWA D102, Section 09960 and as noted below:
1. Paint top surfaces of all purlins, rafters, beams and all other roof structural members prior to roof plate installation.
2. Paint lower side of roof plates prior to installation.
3. Caulk all unwelded roof plate and structural member lap, prior to painting.
3.05 DISINFECTION
A. After protective coatings have been applied and accepted, disinfect the interior of each tank’s surfaces in the presence of the Engineer in accordance with the requirements of AWWA C652 and Section 11500.
3.06 DISPOSAL OF TEST WATER
A. Water used for testing shall be disposed of as required by Section 01560.
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END OF SECTION
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13216 - 1
Chemical Storage Tanks
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 13216
CHEMICAL STORAGE TANKS
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Provide complete, tested, single-walled tanks for chemical storage indoors, as shown on the Drawings and specified herein.
B. Equipment List
1. Sodium Hypochlorite Day Tank: T410
2. Ferric Chloride Day Tank: T420
3. Ammonium Sulfate Day Tank: T430
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section:
1. Section 01330 – Submittals
2. Section 01610 – Seismic Anchorage and Bracing
3. Section 01999 – Reference Forms
4. Section 10200 – Safety and Signage
5. Section 16940 – Instrumentation
1.03 SUBMITTALS
A. Comply with Section 01330.
B. Submit the following items:
1. Evidence of manufacturer’s experience.
2. Shop Drawings: Submit the following items as a single, complete submittal with any proposed changes to the specified requirements stated in writing. a. Materials of Construction:
1) Resin manufacturer data sheet.
2) Hoop stress data for resin as determined by ASTM D2837. 3) Fitting material.
4) Gasket style and material.
5) Bolt material.
b. Dimensioned Tank Drawings
1) Location,size, and orientation of fittings, manway openings, and accessories.
2) Details of seismic restraint system including locations of anchor bolts in foundation.
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3) Details of construction of inlet and outlet fittings, manways, and other accessories. Include materials of construction.
3. Product Data: Submit manufacturer’s standard literature describing products provided with the storage tank.
4. Structural Calculations:
a. Tank Restraint System Calculations: Stamped and signed by a civil or structural engineer registered in California.
b. Tank Wall Thickness Calculations: Submit calculations based on methodology required by ASTM D1998.
5. Manufacturer'sinstallation instructions.
6. Operations and maintenance information.
7. Factory test reports
8. Manufacturer’s warranty.
9. Completed Manufacturer’sInstallation Certification Form (Section 01999).
1.04 DESIGN REQUIREMENTS
A. Tank Design Criteria
Criteria T410 T420 T430
Number 1 1 1
Chemical Service Sodium
Hypochlorite Ferric Chloride Ammonium Sulfate
Chemical Concentration 12.5% 40% 39%
Specific Gravity of Stored Fluid 1.20 1.40 1.22
Tank Type
Single Wall,
Vertical,
Closed-Top
Single Wall,
Vertical,
Closed-Top
Single Wall,
Vertical,
Closed-Top
Tank Resin XLHDPE XLHDPE XLHDPE
Liner None None None
Tank Color Natural White Natural White Natural White
Nominal Volume 155 30 55
Diameter (maximum) 2 feet - 7 inches 1 foot - 11 inches 1 foot - 11 inches Overall Height 4 feet - 9 inches 2 feet - 2 inches 3 feet - 3 inches Exposure Indoor Indoor Indoor
Chemical Temperature (maximum) 100°F 100°F 100°F
Ambient Temperature (maximum) 100°F 100°F 100°F
B. Materials
1. All tank components shall be compatible with the stored chemicals.
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C. Tank Shell Thickness
1. Determined in accordance with ASTM D1998.
2. Maximum allowable hoop stress used in wall thickness calculations: Base on test data developed in accordance with ASTM D2837.
3. Wall thickness shall assume contents have a specific gravity not less than 1.4.
4. Increase tank shell thickness at fittings and connection points for mounting equipment such that tank wall deflection and damage does not occur.
D. Tank Restraint System
1. Restrain tanksin accordance with the seismic and wind load design requirements specified in Section 01610.
2. Design tank restraint system to meet the requirements of the Building Code that is in effect for the project location.
1.05 QUALITY ASSURANCE
A. Products of the same material furnished under this Section shall be supplied by a single manufacturer regularly engaged in the design and manufacture of chemicalstorage tanks for a minimum of 10 years with a satisfactory performance record. Demonstrate to the Engineer’s satisfaction that the quality is equal to the tanks made by the manufacturers named herein.
B. Comply with Standard Specification for Polyethylene Upright Storage Tanks, ASTM D1998, except as modified herein.
C. Comply with the following regulatory standards:
1. Uniform Fire Code, especially Article 80, Hazardous Materials, with local amendments, if any.
2. California Building Code.
D. Tanks shall be manufactured from new materials and shall not be stored for more than 3 months prior to delivery.
E. Tanks shall be free of visual defects, air bubbles, crazing and cracking. Trim and smooth cut edges of openings into the tank.
1.06 MANUFACTURER’S WARRANTY
A. Provide three (3) year full replacement warranty.
PART 2 - PRODUCTS
2.01 MANUFACTURER
A. Poly Processing Company;
B. Snyder Industries;
C. Or equal.
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2.02 POLYETHYLENE STORAGE TANKS
A. Rotationally-molded, one-piece seamless construction, cylindrical in cross-section, manufactured in accordance with ASTM D1998.
B. Tanks shall be certified NSF/ANSI 61 compliant for chemical storage for drinking water applications.
C. Resin: Use 100 percent virgin polyethylene with ultraviolet stabilizer meeting or exceeding the following properties:
Property XLHDPE ASTM Test
Density, gm/cc 0.938-0.944 D1505
Environmental Stress Cracking Resistance,
F50, hours, 100% Igepal >1,000 D1693
Tensile Strength @Yield, psi,
2-inch/minimum 3,000 D638
Type IV Specimen
Elongation at Break, %, 2-inch minimum >300 D638
Type IV Specimen
Vicat Softening Point, °F 250 D1525
Flexural Modulus, psi 100,000 D790
2.03 TANK FITTINGS AND ACCESSORIES
A. Fittings and Accessories Schedule
Tank Number
Stored Chemical
T410
Sodium Hypochlorite
T420
Ferric Chloride
T430
Ammonium Sulfate
Fittings Size Size Size
Fill 1.25 inch 1.25 inch 1.25 inch
Outlet (to Pump) 1 inch 1 inch 1 inch
Drain 2 inch 2 inch 2 inch
Overflow 2 inch 2 inch 2 inch
Vent 2 inch 2 inch 2 inch
Manway 7 inch (min.) 7 inch (min.) 7 inch (min.)
Level Sensor Note (a) Note (a) Note (a)
Accessories Quantity Quantity Quantity
Label Note (b) Note (b) Note (b)
Level Indicator 1(c) 1(c) 1(c)
Level Switch 2(a) 2(a) 2(a)
(a) Provide a high-high level switch and a low-low level switch for the tank. Coordinate with the level switch supplier on fitting size, type, and method of attachment. (b) See Section 10200 for require labels and safety signage. (c) Provide a weigh scale with level transmitter for monitoring the liquid level in the tank.
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B. Materials
Chemical Fitting Material Gasket Material Bolt Material Sodium Hypochlorite PVC Viton Hastelloy C
Ferric Chloride PVC EDPM Hastelloy C
Ammonium Sulfate PVC EDPM Hastelloy C
C. Fittings and Connections
1. Fill and Overflow
a. Threaded bulkhead compatible with connecting piping. b. Fittings installed on top of sloping tank surface shall be made vertical.
2. Drain and Outlet
a. Bolted double flange fittings with two 150-lb flanges. b. Use bolts with internal polyethylene injection molded encapsulated heads compatible with the chemical stored.
3. Vent
a. Compression type bulkhead fitting with U-bend outlet.
4. Manway
a. Minimum 7-inch manway opening.
b. Provide threaded cap with gasket.
5. Flexible Connections
a. Provide expansion joints on tank fittings to absorb tank expansion and contraction and isolate vibration and shock that could damage tank.
6. Gaskets
a. Thickness: 1/4-inch minimum.
b. Hardness: 40 to 50 durometer.
D. Tank Accessories
1. Tank Labels: See Section 10200.
2. Level Indication: Provide a weigh scale with a level transmitter to monitor tank level. See Section 16940.
3. Level Switches: See Section 16940.
2.04 SEISMIC RESTRAINT
A. Use Type 304 stainless steel for base plates, tension cables, anchors bolts, and other system components.
2.05 FACTORY TESTING
A. Perform gel and impact tests in accordance with ASTM D1998 on samples cut from each polyethylene chemical storage tank.
B. Submit certified shop test result. Do not ship tanks until favorable review of shop testing submittal is received.
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PART 3 - EXECUTION
3.01 DELIVERY, STORAGE, AND HANDLING
A. Ship tanks upright or lying down on their sides with blocks and slings to secure the tank from moving. Avoid sharp objects on trailers. If necessary, install bracing to maintain tank rigidity and shape during transit.
B. Protect flange faces by covering with plywood or hardboard, securely fastened to the flange.
C. Package fittings, tank accessories and small partsto prevent damage during shipment. Do not ship these items loose.
D. Upon arrival at the site, inspect the tanks and accessories for damage in transit.
E. Lifting: Use slings around the tank to lift and handle the tank. Do not lift from fittings or other tank attachments.
3.02 INSTALLATION
A. Install tanks in accordance with manufacturer’s installation instructions and shop drawings.
3.03 IDENTIFICATION
A. Identification of the health, flammability, and reactivity of hazardous materialsisrequired for each tank. See Section 10200.
3.04 FIELD TESTING
A. Hydrostatic Test
1. Conduct a 48-hour static leak test for each tank. Fill tank with water to the overflow level.
2. A passing result shall be no leakage from the tank. If a leak is detected, the tank shall be repaired or replaced in a manner satisfactory to the Engineer. Repairs shall be performed by the tank manufacturer at no additional cost to the City.
After repairs, retest the tank until a passing result is achieved.
B. Tank Accessories
1. Demonstrate that all tank accessories work properly.
2. Liquid Level Indicating System: Confirm level indicating system provides accurate measurement of liquid level in the tank.
3.05 CLEANING
A. After satisfactory completion of field testing, drain the testing water. Rinse the inside of the tank with clean, potable water. Hand wipe and dry as required to leave the tank interior clean, dry, and ready for chemical storage
B. Clean the tank exterior and accessories.
END OF SECTION
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SECTION 13224
PRESSURE FILTER
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Provision and installation of a complete and operable, fully automated, pressure-type filtration system for arsenic, iron, and manganese removal, as indicated on the Drawings and specified herein.
B. Materials and Equipment:
1. Vertical pressure filter and appurtenances
2. Filter underdrain and surface wash systems
3. Filter media and media support
4. Filter piping and valves
5. Filter control panel
6. Compressed air system
7. Surface wash booster pumps
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section
1. Section 01330 – Submittals
2. Section 01600 – Material and Equipment
3. Section 01610 – Seismic Anchoring and Bracing
4. Section 01611 – Seismic Design Requirements
5. Section 01810 – Facility Startup and Commissioning
6. Section 01820 – Training
7. Section 01825 – Equipment and System Testing
8. Section 01999 – Reference Forms
9. Section 09960 – High Performance Coatings
10. Section 11000 – General requirements for Equipment
11. Section 11002 – Equipment Mounting
12. Section 11364 – Centrifugal Water Pumps
13. Section 11475 –Air Compressor Unit
14. Section 11500 – Disinfection
15. Section 15110 – Valves and Accessories
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1.03 SUBMITTALS
A. Comply with Section 01330.
B. Submit the following items:
1. References
a. List of references in accordance with Paragraph 1.05-B. Include a current contact name, phone number, and address for each facility. b. Resume(s) showing experience of supplier’s field representative(s) that will be on site to provide the specified field services.
2. Shop Drawings and Product Data
a. Shop drawings of the filter, piping, media, underdrain, and appurtenances for review. Include sufficient information to demonstrate that the equipment conforms to the requirements herein. Include sizes, materials of construction, location of equipment and appurtenances, and pertinent manufacturer’s data.
b. Coating information for the filters and appurtenant metal accessories.
Demonstrate compliance with Section 09960.
3. Electrical, Instrumentation, and Controls
a. Submit single line diagram of the electrical distribution for the filter equipment.
b. Detailed elementary and I/O wiring diagrams showing all wiring requirements for each system.
c. Control panel and solenoid valve panel enclosure and elevation layout and diagrams.
d. System interconnection details.
e. Process and instrumentation diagrams (P&IDs) depicting equipment, instruments, motorized components, boundaries of scope of supply, and all points of connection. Include equipment information (e.g., flow rate, pressure, powerrequirements, motorsize), flow or pressure settings, and pipe sizes on the P&IDs.
f. PLC system block diagram, including network communications architecture, control panel layouts, configuration data, I/O lists, and I/O point addresses.
g. Control descriptions, with sequence of operations, listing of monitored parameters, listing of setpoints with initial entry values, and listing of alarms with initial limit values.
h. Printouts of operator interface (OI) screens.
4. Calculations
a. Structural calculations and detailed drawings for the attachment and anchorage of the filter vessel and appurtenances and filter system equipment. Calculations shall be signed and sealed by a Professional Civil or Structural Engineer registered in the state of California and shall conform to the requirements of Sections 01610 and 01611. Anchorage
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design shall consider thermal expansion and contraction of the filter vessel.
b. Hydraulic calculations of design pressure loss under clean filter bed and backwash conditions to demonstrate uniformity of flow through influent/backwash and underdrain piping. Base calculations on actual pipe sizes and configuration, orifice locations, filter media, support bed, and appurtenant piping.
c. Hydraulic calculations for sizing the surface wash pumps. d. Calculationsfor sizing the combination air valves.
5. Certifications
a. Certification from the manufacturer that the filter is capable of resisting seismic loads. Loading shall be as described in Section 01611. b. ASME Form U-1A certifying the pressure vessel construction prior to delivery of the filter to the project site.
c. Certification from the media supplier for the media that will be supplied to the project site verifying that the media conforms with AWWA B100, AWWA B102, and ANSI/NSF Standard 61.
6. Test Results
a. For each batch of media to be shipped to the projectsite,submit certified laboratory test results for all tests performed as required by this Specification to demonstrate conformance with AWWA B100 and this Specifications. Test resultsshall be favorably reviewed prior to shipment.
7. Samples
a. Two 1/2-cubic-foot samples of each of the proposed media suitable for laboratory sieve analysis and other specified tests in dust-tight containers. Include test results from laboratory testing. The City may perform independent testing of the proposed media samples to confirm test results.
8. Manuals
a. Manufacturer’s installation, operation, and maintenance manuals and bulletins for review.
9. Field Test Procedures
a. Detailed step-by-step procedures for field tests to be used to verify conformance with the Performance Test Requirements Specified herein.
The test proceduresshall delineate methods, equipment, data collection, and analysis methods to be used.
10. Unit Responsibility Form (Section 01999)
11. Manufacturer’sInstallation Certification (Section 01999)
12. Warranty
a. Written performance guarantee and written warranty
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1.04 DESIGN AND PERFORMANCE REQUIREMENTS
A. Influent Water Quality
1. Anticipated filter influent water quality, based on sampling from a monitoring well, are noted below:
a. pH............................................................7.6 – 8.7 b. Alkalinity..................................................111 – 268 mg/L as CaCO3 c. Hardness .................................................52 – 240 mg/L as CaCO3 d. Turbidity ..................................................1 – 400 NTU* e. Iron.......................................................... 0.066 – 0.0320 mg/L f. Manganese ............................................. 0.072 – 0.180 mg/L g. Arsenic .................................................... 0.001 – 0.016 mg/L * The well will be flushed until the turbidity dropsto below 5 NTU before sending the groundwater to the filter.
B. Pretreatment Chemicals
1. Sodium hypochlorite will be added to oxidize and precipitate iron andmanganese for removal and provide a residual leaving the filter.
2. Ferric chloride may be added to coagulate arsenic for removal.
C. Design Requirements
1. Number of Filter Vessels......................... 1
2. Number of Filter Cells.............................. 1
3. Unit Design Flow Rate .............................400 gpm
4. Total Filter Area.......................................78.5 sq. ft
5. Filter Loading Rate at Design Flow..........5.1 gpm/sq. ft
6. Maximum Operating Pressure................100 psi
7. Maximum Dirty Bed Headloss......................psi
8. Backwash Rate ........................................15 gpm/sq. ft
9. Surface Wash Rate ..................................2 gpm/sq. ft
10. Filter Vessel Outside Diameter................10 ft D. Performance Requirements
1. The filtration system shall be designed to consistently produced filtered water meeting the following filtered water objectives:
a. Turbidity ..................................................≤ 1 NTU b. Iron..........................................................≤ 0.10 mg/L c. Manganese..............................................≤ 0.02 mg/L d. Arsenic.....................................................≤ 0.005 mg/L
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2. The filtration system shall be designed to meet the following conditions:
a. Filter Clogging Rate .................................≤ 0.0125 ft/hr b. Spent Backwash Water Production.........< 3% of throughput volume E. Seismic Design Criteria: See Section 01611.
1.05 QUALITY ASSURANCE
A. All equipment under this Section shall be furnished by a manufacturer who has been regularly engaged in the design and manufacture of the equipment. The manufacturer of the filter assembly shall have manufactured similar filter assembliesfor at least ten years.
B. The Filter System Supplier shall provide a list of at least ten references for similar arsenic, iron, or manganese removal facilities installed within the last three years. At least two of the installations shall be for 8- to 10-foot diameter, vertical pressure filters with surface wash.
C. Unit Responsibility
1. Assign unit responsibility, as specified in Section 11000, to the pump equipment manufacturer for the equipment specified in this Section and other referenced sections.
2. Submit a certificate of Unit Responsibility (Section 01999).
D. The Filter System Supplier’s trained field representative shall have the following experience:
1. Overseen installation and startup of not less than five pressure filter systems, including three systems with surface wash.
2. Overseen filter system startup of not less than three drinking water treatment facilities removing iron and manganese.
E. The filter pressure vessel shall be fabricated in an ASME Code certified manufacturing facility.
1.06 SYSTEM RESPONSIBILITY
A. The Filter System Supplier shall be responsible for furnishing, coordinating, overseeing assembly and installation of, testing, and starting up the pressure filter system, complete with appurtenant items.
1.07 WARRANTY AND GUARANTEES
A. The warranty for all products and work shall comply with the requirements of the General Contractor’s General Warranty and Guarantee described in the General Conditions and Supplementary Conditions.
B. Submit a performance guarantee from the Filter System Supplier stating that the filter system will meet the performance requirements in this Section for: hydraulic capacity; arsenic, iron, and manganese removal; other filtered water quality; and spent backwash water production.
C. The Filter System Supplier shall warrant the filter system equipment and materials for a period of twenty-four (24) months from start-up or thirty (30) months from shipment,
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whichever occurs first. In the event of difficulty in operation or failure of equipment, the Filter System Supplier will be notified by telephone andmust provide advice for correction within 24 hours. If deficiency in the performance or operation persists for more than seven (7) days, a factory-trained representative of the Filter System Supplier shall come to the site and correct the condition to the satisfaction of the City.
PART 2 - PRODUCTS
2.01 A. rnish and install a complete vertical pressure filter system with filter media and piping to remove arsenic, iron, and manganese, and suspended solids from the groundwater.
B. e filter and appurtenances shall be manufactured and supplied by:
1. prest;
2. berts Filter Group;
3. approved equal.
2.02 ER PRESSURE VESSEL
A. re Vessel
1. e filter vessel shall be designed, constructed, welded, pressure tested, and inspected in accordance with Section VIII, Division I of the ASME Boiler and Pressure Vessel Code and shall bear the ASME Code stamp.
2. e design pressure shall be 30% in excess of the normal maximum operating pressure at ambient temperature.
3. als of construction shall be ASTM A 285 Grade C, ASTM A 515, or ASTM A 516 carbon steel or better. All piping connections shall be Schedule 40 carbon steel with 150-lb fittings.
4. e vessel head style shall be flanged and dished.
5. e filter shell shall be supported by four structural steel legs welded to the vessel.
Seismic loads shall be carried to the concrete foundation with the anchorage system designed by the Filter System Supplier. Design the structural legs to evenly distribute the filter loading along the concrete. Supports shall be grouted to the concrete footing, as specified in Section 11002.
B. purtenances: Equip the filter with the following connections and appurtenances on the filter or filter external piping:
1. e (1) 24-inch (minimum) round upper manway. Provide manway cover with handles suitable for lifting and a suitably sized davit.
2. e (1) 18-inch x 14-inch (minimum) elliptical lower manway for access during installation.
3. e (1) vent connection, sized by the Filter System Supplier. Vents shall be not less than 1-inch-diameter.
4. e (1) 8-inch diameter filter influent/backwash connections.
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5. e (1) 8-inch diameter filter effluent/filter-to-waste connection.
6. e (1) 3-inch surface wash connection.
7. e (1) 3-inch drain connection on the filter effluent header.
8. e (2) 1/2-inch sample ports, on the filter influent header, filter effluent header, and on the filter cell for collection of filtered water sample below the filter media.
9. nimum of one (1) lifting lugs to facilitate placing the vessel.
10. er accessories as noted on the Drawings or specified herein.
C. ternal Filter Piping
1. ovide the following for connection to the pressure vessel as shown on the Drawings and described herein.
a. One (1) 6-inch flanged filter influent header.
b. One (1) 6-inch flanged backwash header.
c. One (1) 3-inch flanged surface wash header.
d. One (1) 6-inch flanged filter effluent/filter-to-waste tee.
2. ping shall be ASTM A53 steel pipe with 150# flanges.
3. ttings shall be 125# flanged cast iron.
2.03 ER INTERNALS
A. let Distributor/Backwash Collector
1. rnish one (1) 6-inch-diameter, full-length inlet distributer/backwash collector header designed to uniformly distribute the filter influent over the entire filter bed and to uniformly collect backwash water during the backwash operation.
2. e filter inlet distributer/backwash collector shall be constructed of Type 316L Stainless Steel, Schedule 10.
3. e filter inlet distributer/backwash collector shall be factory assembled and adequately supported to withstand operational and seismic loads.
B. derdrain System
1. rnish an underdrain system designed to uniformly collect filtered water and distribute backwash water across the filter bed, with variations of no more than ±5%.
2. e underdrain system shall be a header lateral type.
a. The headershall be constructed of Type 316L Stainless Steel, Schedule 10 and have couplings welded in place for lateral connections. b. The lateralsshall be constructed of Type 316L Stainless Steel. The orifices or slots on the laterals shall be no larger than 0.01 inches.
C. rface Wash System
1. rnish a surface wash system to uniformly distribute surface wash water.
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2. e surface wash system shall be a header lateral type with nozzles. a. The header shall be constructed of Type 316L Stainless Steel, Schedule
10. b. The spray nozzles shall be Type 316L Stainless Steel.
3. ternately, the surface wash system may be the self-propelled rotary type. a. The surface wash supply pipe, agitator body, and distributor arm shall be Type 316L Stainless Steel.
b. Provide non-clogging nozzlesthreaded to the agitator arm and spaced for uniform water distribution. The nozzles shall be arranged to impart rotation on the distributor arm when water is applied.
4. e pressure requirement for the surface wash system shall be no more than 35 psi above the backwash supply pressure.
D. dware: Use 316 stainless steel bolts, nuts, and washers for the bolted connections inside the filters.
E. ion: Provide dielectric isolation between carbon steel and stainless steel components.
F. ncrete Fill: Per Filter System Supplier requirements. Concrete shall have NSF 61 certification or be coated with compatible NSF 61 certified coating system for contact with potable water.
2.04 ER MEDIA AND SUPPORT GRAVEL
A. e Filter System Supplier shall furnish the Greensand filter media, anthracite filter media, and gravel support bed.
B. l filter media shall be a product of a company experience in the production of media for water treatment filtration.
C. lter media materials, testing, shipment, placement, and preparation of filter for service shall conform to AWWA B100 and AWWA B102, except as modified herein.
D. e Greensand, anthracite, and support gravel shall meet AWWA B100. The Greensand shall meet AWWA B102. The Greensand, anthracite, and support gravel shall be NSF/ANSI 61 certified.
E. e filter media shall be generally spherical in shape and conform to the following requirements before and after installation.
1. thracite
a. Depth ......................................................12 inches b. Effective Size ...........................................0.60 to 0.80 mm c. Uniformity Coefficient.............................less than 1.60 d. Specific Gravity........................................1.60 ± 0.1 e. Anthracite coalshall be No. 1 grade with a MOH hardness of over 2.7. Not more than 20% of the total weight or number of particles shall be thin or flat as defined by one dimension exceeding three times the other dimension.
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2. nd
a. Depth ......................................................18 inches b. Effective Size ...........................................0.30 to 0.35 mm c. Uniformity Coefficient.............................less than 1.60 d. Specific Gravity........................................2.40 ± 0.1
3. pport Gravel
a. Depth ......................................................9 inches b. Specific Gravity........................................not less than 2.6 c. The gravel support bed shall consist of two (2) layers of graded gravel with the following gradations and thickness.
1) 6 x 12................................ 3 inches (bottom layer) 2) 1/8" x 1/4"........................ 6 inches (top layer) F. and screen all anthracite, Greensand, and support gravel before shipment G. rnish filter media in sufficient quantity for initial operation of the filters. Include enough media to account for initial media loss from washing and scraping. Ship all media to the project site double-bagged in one cubic foot sealed bags on pallets, with the contents in each bag marked on the exterior.
2.05 ER EXTERIOR VALVES
A. rnish the following valves:
1. tterfly valves with pneumatic actuators in the following quantities and sizes:
a. Filter Influent: One (1) 6-inch valve.
b. Filter Effluent: One (1) 6-inch valve.
c. Filter Backwash: Two (2) 6-inch valves.
d. Filter-to-Waste: One (1) 6-inch valve.
2. rface Wash: One (1) 3-inch valves.
3. tomatic Combination Air/Vacuum Release Valve
a. Quantity: One (1) valve.
b. Size: To be sized by the Filter System Supplier.
4. lter Drain: 3-inch butterfly valve with lever handle and camlock connection on each filter drain connection.
5. ts: 1.5-inch stainless steel ball valves on each filter vent connection.
6. mple Port: 0.5-inch stainless steel ball valves at each sample port on the filter, including the filter inlet and filter outlet.
B. e Section 15110 for valve requirements.
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2.06 NG
A.
1. All coating products applied to surfaces in contact with the process water shall be NSF/ANSI 61 certified.
2. Apply all coatings in strict conformance with the manufacturer’s instructions and the requirements of Section 09960, as modified herein.
3. Grind all welds and sharp edgessmooth to a radius compatible with the lining and free of porosity and correct any imperfections prior to the application of the protective coatings.
B. lter Tank Interior
1. op coat the filter vessel interior and all appurtenant metal accessories specified herein within the vessel (other than stainless steel) with the following coating system:
a. Near white sandblast conforming to SSPC-SP10.
b. Three coats with high solids epoxy, Tnemec Series 140 pota-pox or equal, to give a finish of 12 to 15 mils dry film thickness (DFT).
2. st all interior coatings for pinholes with a low voltage electric resistance meter per NACE SP0188. Check coating thickness with a magnetic thickness gauge.
Repair all deficiencies in film integrity and thickness.
C. lter Tank Exterior
1. op prime the filter vessel exterior and all appurtenant metal accessories specified herein (other than stainless steel) with the following coating system:
a. Commercialsandblast conforming to SSPC-SP6 or better. b. Prime coat with high solids epoxy, Tnemec Series 140 or equal, to give a finish of 2 to 4 mils DFT.
2. nal coat will be field applied.
2.07 ER CONTROL PANEL
A. e Filter System Supplier shall furnish an automatic control system consisting of a programmable logic control (PLC) based control panel with an operator interface terminal (OIT), necessary hardware, timers, relays, switches, alarms, input/output (I/O), enclosures, and other items for a complete operational system.
B. e filter control panelshall fully tested with all alarms, indication, and I/O fully simulated at the factory prior to shipment. All screens shall be tested along with all alarm functions and other control parameters, verified by factory certification with inspector and date of inspection noted.
C. l control panel components shall meet the requirements of Division 16 of these specifications.
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2.08 SED AIR SYSTEM
A. mpressed Air Supply System
1. rnish a compressed air supply system for the supply of instrument-quality air, consisting of an air compressor, air receiver, dryer, filters, and other equipment necessary for the operation of the Filter System.
2. e air compressor system shall meet the requirements of Section 11475.
B. noid Panel
1. rnish a solenoid panel in a NEMA 4X enclosure.
2. e solenoid panel shall contain 24 VDC air control solenoid valves with manual overrides, with the manifold installed, wired to terminal strips, and plumbed to bulkhead fittings.
3. ovide selector switches for each valve on the valve control panel to allow for selection of manual, off, or auto control of the valve.
4. ovide press-in pneumatic fittings and poly tubing with chrome fittings for external connection to the pneumatically actuated butterfly valves.
5. ovide a membrane dryer to ensure instrument-quality air is supplied to the pneumatically actuated valves.
6. ovide a low air pressure switch to alert of low air supply pressure and shut down filter system upon loss of valve control.
2.09 ACE WASH PUMP
A. ovide one (1) booster pump to boost the pressure of the groundwater delivered from the well pump discharge pipeline to the filter for surface wash.
B. e pump shall be sized to deliver water at the flow rate and pressure required for surface wash of the filter cell.
C. e pump shall meet the requirements of Section 11364.
2.10 ACCESSORIES
A. Differential Pressure Transmitter
1. Furnish one (1) differential pressure transmitter to monitor the differential pressure across the filter common inlet and common outlet headers.
2. Provide transmitter with NEMA 4 enclosure.
3. Differential pressure transmitter shall be Siemens Sitrans P; or equal.
2.11 SPARE PARTS
A. Furnish one set of the Filter System Supplier’s recommended spare parts. At minimum, spare parts shall include:
1. One (1) spare manway gasket for the 24-inch upper manway.
2. 50 cubic feet of extra anthracite.
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McCandless Well Facility
PART 3 - EXECUTION
3.01 DELIVERY, STORAGE, AND HANDLING
A. Conform with requirements in Section 01600.
B. Receive, offload, and install filter vessel in strict conformance with the manufacturer’s installation instructions.
3.02 FIELD SERVICES
A. Installation
1. The Filter System Supplier shall inspect and supervise the installation and certify that the Contractor has installed the filter equipment in the correct manner in accordance with Section 01810.
2. The Filter System Supplier shall be responsible for directing placement of filter internals; testing of internal piping for clogging and uniform flow; directing placement of concrete fill,support gravel and filter media, including washing and skimming of media fines; placing the filter system in service; and conducting the performance tests.
3. The Filter System Supplier shall be onsite and shall oversee installation of the filter, including all internal piping, placement of concrete, verification of underdrain uniform flow conditions, placement of support, filter media placement, including washing and skimming of media fines, and sampling of in situ media.
4. Filter System Supplier shall train the Contractor’s representatives in the correct installation procedures. Filter System Supplier shall be available to assist the Contractor at any time during installation of the remaining filters. In the event of any difficulties, Filter System Supplier shall return to site to assist the Contractor to correct any deficiencies.
5. Upon completion of installation and prior to testing, Filter System Supplier shall return to site and collect filter media samples from each of the remaining filters for laboratory analysis.
B. The Filter System Supplier shall make a field trip within one month of the end of the oneyear warranty to visit the site and inspect the operation of the system. Within one week after the site visit, submit a report of results of the trip pointing out deficiencies and offering recommendations for unperformed maintenance.
3.03 INSTALLATION
A. After the filter vessel is installed, inspect the interior. Touch-up or repair any marred or scratched coatings to the satisfaction of the City prior to placing media. Spark test all repaired surfaces per NACE SP0188 to verify that they are holiday free.
B. Underdrains
1. After the filter is installed, thoroughly clean the underdrain systems of all extraneous material which could later collect in the underdrains.
2. Place 2,500 psi NSF 61 compliant concrete in the bottom of the filter vessel up to the base of the gravel support bed. Provide concrete tie downs.
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3. Test the underdrain systems that have nozzles by backwashing at a rate of 15 gpm/sq. ft to ensure that uniform water distribution is achieved in the filtering and backwash modes. Any irregularities in the height or volume of water jets emitted from distributors shall be corrected by thorough cleaning of underdrain piping and nozzle orifices. A condition of uniform flow shall be attained prior to placement of gravel support material.
4. Before installation of the support gravel, vacuum clean the underdrain area, all piping, and all surfaces that come into contact with the backwash supply water.
This cleaning must be favorably reviewed before beginning placement of the support gravel.
5. The support gravel shall be placed carefully to avoid damage to the underdrain system and coatings.
6. After the media is installed, backwash at 15 gpm/sq. ft. Irregularities in the surface elevation of the media greater than 1-inch shall be considered excessive and indicative of a non-uniform flow. Correct any deficiencies until a uniform flow is attained.
C. Media
1. Place filter media, wash, scrape, and add makeup media per AWWA B100 and AWWA B102.
2. After the media has been installed and cleaned in the filters, it will be sampled and tested for conformance with this Section. Replace any media found to be in nonconformance to these specifications at no additional cost to the City.
D. Disinfect filter media, filter vessel and piping per Section 11500 prior to placing into service.
3.04 FIELD PAINTING
A. Coat the exterior of the filter and appurtenances in accordance with Section 09960.
3.05 STARTUP AND TESTING
A. Comply with the requirements of Section 01810 and 01825.
B. Furnish all equipment required to complete the filter performance tests.
C. The Filter System Suppliershallstart up the equipment, make necessary adjustments, and demonstrate to the City that all components of the filtration system are in proper operating condition by continuous operation for a period of not less than 96 continuous hours (four full days). Successfully accomplish at least one manual backwash and one automatic backwash events per filter during this period, one of which shall be induced by simulating a high head loss condition. During this period, the manufacturer's representative shall explain and train the City's operations personnel on the function, operation, and maintenance of the filtration equipment, in accordance with Section 01820.
D. The filtersystem shall meet the Performance Requirements previously specified.
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3.06 TRAINING
A. The Filter System Suppliershall provide a trained field representative to instruct operating personnel in the proper use and maintenance of the new filters and controls.
1. Provide two (2) training days at startup.
2. It is the responsibility of the Contactor to schedule and arrange for training of all plant shifts.
3. See Section 01820 for additional training requirements.
B. The training may be videotaped.
END OF SECTION
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FRP Grating
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 13237
FIBERGLASS REINFORCED PLASTIC (FRP) GRATING
PART 1 - GENERAL
1.01 DESCRIPTION
A. This section specifies fiberglass reinforced plastic (FRP) grating and all associated hardware. All specified FRP products shall be of the pultruded type. Products manufactured by any other method are not acceptable.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section
1. Section 01330 – Submittals
1.03 PERFORMANCE AND DESIGN REQUIREMENTS
A. Grating: FRP grating shall be designed in accordance with the following:
1. A minimum structuralsafety factor of 2.
2. Unless otherwise shown on the Drawings, design loads for FRP grating shall be 200 pounds per square foot.
3. Maximum deflection shall be the quotient of the grating span divided by 360 or 1/4 inch, whichever is less.
4. Unless otherwise specified, grating shall be supported on epoxy coated steel angles and channels bolted to concrete, as indicated on the Drawings.
B. Clips, Bracing, and Anchor Bolts
1. Stanchions and bracing shall be steel I-beam cross section designed for vertical loads associated with the grating plus the weight of any supported equipment as indicated on the Drawings.
2. All rivets or connectors and anchor boltsshall be stainlesssteel ASTM A320, Type 304. All connectors and anchor bolts shall be epoxy coated for corrosion protection.
3. All hold-down clips shall be FRP.
1.04 SUBMITTALS
A. Provide submittals in accordance with Section 01330 and include the following information:
1. Manufacturer and method of fabrication.
2. Materials selected for laminates to be provided for the project.
3. Grating styles, thicknesses,sizes, etc.
4. Description of all accessories, including coatings.
5. Installation procedures, including field jointing techniques.
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PART 2 - PRODUCTS
2.01 MANUFACTURERS
A. Candidate manufacturers include Fibergrate Corp., MMFG, Creative Pultrusions, Inc., or equal.
2.02 MATERIALS
A. Standard vinyl ester resin (Dow 411 or better) shall be used for all FRP products.
2.03 GRATING
A. FRP grating shall be of the pultruded type. The system shall consist of two continuous, pultruded spacer bars and a center core/wedge. The spacer bars shall be notched at each bearing bar so that the bars are both mechanically locked and chemically bonded.
B. Unless otherwise specified,the minimum thickness of all FRP grating shall be 1-1/2 inches.
Grating sheet sizes shall be compatible with the support spans shown on the Drawings and shall require a minimum of field cutting. All cut edges shall be sealed. Load bars shall run in the short span direction.
C. The surface of the grating shall be skid resistant. The top of the grating shall be covered with a permanently bonded grit, baked epoxy, antiskid surface.
D. The workmanship and finish on all grating shall be of the highest caliber and equal to the best product of up-to-date manufacturing facilities. All cut edges shall be sealed using a resin system equal to or superior to that used in the grating. Adequate quantities of resin sealing kits comprised of premeasured quantities of thixotropic resin and catalyst, mixing containers, ship brushes, and stirring sticks shall be provided by the fabricator.
E. The grating shall be fire retardant with a flame spread of less than 25 when measured under ASTM E84, Class 1 flame rating and the self-extinguishing requirements of ASTM D635. The grating manufacturer shall submit an independent laboratory test report of testing conducted on the grating (not a resin test report). The test report shall be on the exact type of grating quoted for the project and shall be dated within the past 3 years.
Fire retardance shall be achieved using combinations of aluminum trihydrate, halogen, and antimony trioxide in the resin system.
2.04 COLOR
A. Grating shall be colored using pigment dispersed in the resin system. Color shall be selected by the City from the manufacturer's standard for the resin system used.
PART 3 - EXECUTION
3.01 INSTALLATION
A. Install the grating in accordance with the instructions of the grating manufacturer. All dimensions shall be field verified. There shall be a minimum of 1/4-inch and a maximum of 1/2-inch clearance at every side ofthe grating to any structuralmember ortrench edge.
B. Each pultruded grating panel shall be held down with a minimum of one clip per 6 square feet of panel but no less than four clips per panel. Support each edge or two edges of each panel. A minimum of 1-1/2 inches of load bar shall rest on the support.
END OF SECTION
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Piping Systems
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 15050
PIPING SYSTEMS
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Furnish and install all piping, including fittings, supports, and accessories shown on the Drawings and described herein, to completely interconnect all equipment and valves for a complete and operable system.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section:
1. Section 01330 – Submittals
2. Section 02300 – Earthwork
3. Section 09960 – High Performance Coatings
4. Section 11500 – Disinfection
5. Section 13111 – Galvanic Cathodic Protection for Buried Pipes
6. Section 15076 – Piping and Valving Identification Systems
7. Section 15951 – Testing Gravity Flow Pipelines
8. Section 15996 – Testing Pressure Piping
1.03 REFERENCES
A. ANSI – American National Standards Institute
B. ASME – American Society of Mechanical Engineers
C. ASTM – American Society for Testing and Materials
D. AWWA – American Water Works Association
1.04 SUBMITTALS
A. Comply with Section 01330.
B. Product Technical Data
1. Submit schedule of piping systems that will be used and services that they will be used for.
2. Submit product data on pipe, fittings, joints and joining materials, gaskets, linings, coatings, hardware, piping connections, piping accessories, thermal insulation, and other components.
3. Submit manufacturer’s written directions for material handling, delivery, storage, and installation.
C. Fabrication and/or Layout Drawings
1. Before preparation of shop drawings, installation conditions, including existing utilities and structures, shall be verified by excavation, inspection, and
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measurement. Submit field measurements and photos with shop drawings, where exposed conditions differsignificantly from the conditionsindicated on the Drawings.
2. Submit detailed layout drawings of all piping. Schematics may be submitted for piping 3 inches and smaller. Drawings shall include:
a. Dimensions of pipe length
b. Invert or centerline elevations and sizes of pipe crossings, intersecting ductwork, intersection conduit/conduit racks, or other potential interferences requiring coordination
c. Centerline elevations for pressure pipelines and invert elevations for gravity flow pipelines
d. Bury depth for buried yard piping
e. Location and type of pipe supports and anchors
f. Location of valves and valve actuator type
g. Location and details of fittings, tapping locations, thrust blocks, joint restraints, couplings, flexible expansion joints, connections to equipment, piping accessories, thermal insulation, and related appurtenances
h. Line slopes and vents
3. Submit schedule of interconnections with existing piping and method of connection.
D. Test Reports
1. Submit certified test reports as required herein and by the referenced standards specifications.
2. Submit field test reports asrequired in PART 3.
1.05 QUALITY ASSURANCE
A. Materials and equipment furnished under this Section shall be of manufacturers who have been regularly engaged in the design and manufacture of the materials and equipment for a period of at least five (5) years. Demonstrate to the satisfaction of the Engineer that the quality is equal to the materials and equipment made by the manufacturers specifically named herein, if an alternate manufacturer is proposed.
B. Factory Quality Control: The Contractor shall test all products as noted herein and by the reference specifications.
C. Field Quality Control:
1. The City will:
a. Inspect field welds and test the welds if it is deemed necessary. b. Perform bacteriological analysis for pipelinesto be disinfected.
2. The Contractor shall:
a. Perform leakage tests.
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b. Be responsible for the costs of additional inspection and retesting by the City resulting from noncompliance.
PART 2 - PRODUCTS
2.01 GENERAL
A. Pipe sizes are nominal inside diameter unless otherwise noted. All sizes of pipe shall be as called out on the Drawings and specified herein.
B. All pipe and fittings delivered to the job site shall be clearly marked to identify the material, class, thickness, and manufacturer.
C. All material shall be new and free of blemishes.
D. Where only one type of pipe is called out, no substitutions shall be allowed.
E. Piping materials of like kind shall be the product of one manufacturer.
F. The Contractor is responsible for furnishing and installing all items necessary to make a complete and workable piping system. This includes, but is not limited to, valve boxes, insulating couplings and gaskets, piping specialties, and all other items required by the nature of the installation. Any item not specified herein but required by the installation shall be of first quality, equal in grade to similar materials specified herein, and shall comply with all applicable reference standards listed herein.
G. All materials (pipe, fittings, gaskets, linings, etc.) in contact with the potable water, process water to be treated to potable water, or liquids (e.g., chemicals) to be added to the process/potable water shall be lead-free and shall meet the requirements of California Code of Regulations Title 22 Chapter 16 Article 7 regarding direct and indirect additives.
H. Paint exposed pipe in conformance with requirements of Section 09960.
2.02 PIPE MATERIALS
A. Pipe and Fitting Designation:
1. Piping materials are identified by a “Type” designation in these specifications.
2. Specific piping materials and other pertinent information is summarized for each pipe type.
3. Pipelines are designated on the Drawings by a two-element code, the first representing the nominal pipe diameter and the second an abbreviation indicating the piping system.
4. The following schedules, except where indicated otherwise on the Drawings, identify pipe type to be used for each piping system. Where the pipe type is not specifically identified on the Drawings, materials shall be selected based on the pipe service as listed in the following schedule and specified in subsequent articles of this specification.
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B. Pipe Type Schedule:
Abbr. System Size Service Pipe Type Notes
Process
AR Artesian Relief
BW Backwash Water B DIP-B
FL Flush Line
FTW
FW
Filter-to-Waste
Filtered Water
≤12”
RW Raw Water
SW Surface Wash E DIP-F
TW Treated Water
SA Sample All B, E PVC-P
Chemicals
AMS Ammonia Sulfate All B, E PVC-P 1
FC Ferric Chloride All B, E PVC-P 1
HYPO Sodium Hypochlorite All B, E PVC-P 1
Water
PW Potable Water <4” B, E CUP
Air
CA Compressed Air All E CUT
VENT Vent All E PVC-P 2
Drain
D Building Drain All B, E, C CISP
DR Process Drain
4” ≤ ɸ ≤ 12”
B DIP-B
E DIP-F
<4” E PVC-P
SAD Sample Drain All B, E PVC-P
SD Storm Drain All B PVC-D
SS Sanitary Sewer All
B PVC-D
E, C CISP
Service: B=Buried; E=Exposed; C=Concrete Encased; S=Submerged Notes:
1. Provide double containment for chemical pipelines within the building and for all buried chemical pipelines.
2. For vents on chemical storage tanks only.
C. Cast Iron Soil Pipe (CISP)
1. Pipe and Fittings: Bell and spigot service weight cast iron soil pipe. Hubless cast iron soil pipe may be used in concealed locations only. a. Bell and Spigot: ASTM A74.
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b. Hubless: ASTM A888 and CISPS Standard No. 301.
2. Gasket: Sewage and oil resistant, ASTM C564.
3. Lining and Coatings: None.
D. Copper Pipe (CUP)
1. Pipe: Copper pipe, ASTM B88.
a. Buried: Type “K.”
b. Exposed: Type “L.”
2. Fittings
a. Soldered: Wrought copper, ANSI B16.22l or cast bronze ANSI B16.18. b. Flared: AWWA C800 and ANSI B16.26.
3. Joints
a. Buried: Soldered or flared.
b. Exposed: Soldered.
4. Solder: ASTM V32, Alloy Grade E or HB. Solder and flux shall contain less than
0.2% lead.
5. Lining and Coatings: None.
E. Copper Tube (CUT)
1. Pipe: Seamless copper tube, ASTM B88.
a. Buried: Type “K.”
b. Exposed: Type “L.”
2. Fittings
a. Wrought coppersolder joint fittings, ASME B16.22.
3. Joints
a. Soldered.
4. Solder
a. Lead-free alloy conforming to ASTM B32 with water flushable flux conforming to ASTM B813.
5. Lining and Coatings: None.
F. Ductile Iron Pipe – Bell & Spigot (DIP-B)
1. Pipe
a. Ductile iron bell and spigot pipe, AWWA C151.
b. Minimum Pressure Class: 350.
2. Fittings
a. Ductile iron with push-on joints or mechanical joints, AWWA C110 or C153.
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b. Special fittings not available in ductile iron or cast iron pipe may be fabricated of welded steel pipe with a design pressure of 350 psi. Submit design and wall thickness to Engineer for review.
3. Joints
a. Conforming to AWWA C111.
b. Push-on or mechanical joints, except where flanged joints are shown on the Drawings.
c. For all connections, provide restrained joints for pipe and fittings that create a change in pipe size and on fittings that result in a change of direction, whether the change is in the horizontal plane or a vertical plane.
d. Manufacturers: One of the following, or equal.
e. Push-on Joints
a) Fastite Joint asmanufactured by American Cast Iron Pipe Company.
b) Pacific States Cast Iron Pipe Company.
c) Tyton Joint as manufactured by U.S. Pipe.
f. Restrained Push-on Joints
a) United States Pipe and Foundry Company, TR Flex.
b) Pacific States Cast Iron Pipe Company, Thrust Lock.
c) American Cast Iron Pipe Company, Flex Ring or Lok-Ring. g. Restrained Mechanical Joints
a) Pacific States Cast Iron Pipe Company, Lock Mechanical Joint.
b) American Cast Iron Pipe Company, MJ Coupled Joint.
c) EBBA Iron, Megalug.
4. Gaskets
a. Synthetic rubber compound in which the elastomer is nitrile or neoprene, conforming to AWWA C111. Lubricant for push-on joint piping shall be the pipe manufacturer’s standard.
5. Bolts and Nuts
a. Buried, for mechanical joints: Type 304 Stainless Steel.
6. Pipe Taps
a. Threaded metal pipe branch lines up to 1/2-inch in diameter from ductile iron pipe may be made with direct threaded taps, provided the ductile iron wall thickness is in excess of the minimum shown in Tables A.1 and A.2 of AWWA C151 for four full threads.
b. Bosses may be used at the taps to provide the required pipe wall thickness, or use service saddles or reducing flanges on tees.
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7. Lining and Coatings
a. Lining: Double thickness cement mortar lining seal coated with asphaltic material in accordance with AWWA C104, except where unlined pipe is specifically indicated on the Drawings.
b. Coating: Asphalt coating per AWWA C151.
G. Ductile Iron Pipe – Flanged (DIP-F)
1. Pipe
a. Flange Pipe: Ductile iron pipe, AWWA C115. Provide minimum thickness Class 53.
b. Grooved End Pipe: Ductile iron pipe, AWWA C151 with grooves in accordance with AWWA C606, Table 3, for rigid joints. Provide minimum thickness classes in accordance with AWWA C606.
2. Fittings
a. Ductile iron, AWWA C110.
b. Special fittings not available in ductile iron may be fabricated of epoxy lined and coated welded steel pipe with a design pressure of 350 psi.
Submit design and wall thickness to Engineer for review.
3. Joints
a. Provide flanges, except where grooved couplings are required in the Drawings
b. Flanges: Ductile iron flange, in accordance with AWWA C115 and AWWA C110 and faced and drilled to 125 lb ANSI B16.1 standards. c. Grooved Coupling: Mechanical grooved couplings, in accordance with AWWA C606, and minimum pressure rating of 150 psi.
4. Gaskets
a. Gaskets for flanged joints shall be 1/16 in. thick (1/8 in. thick for pipes 12 in. and larger), rubber conforming to applicable parts of ANSI B16.12 and AWWA C115 and C207.
b. Gasket material shall be free from corrosive alkali or acid ingredients and suitable for use in potable water lines.
c. Gaskets shall be one piece with holes to pass bolts.
5. Bolts and Nuts
a. Above ground and exposed pipe: Corrosion resistant, high strength, low alloy carbon steel hex bolts, conforming to AWWA C115.
b. Underground, in concrete valve boxes, or underwater: Type 304 Stainless Steel.
6. Pipe Taps
a. Threaded metal pipe branch lines up to 1/2-inch in diameter from ductile iron pipe may be made with direct threaded taps, provided the ductile iron wall thickness is in excess of the minimum shown in Tables A.1 and A.2 of AWWA C151 for four full threads.
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b. Bosses may be used at the taps to provide the required pipe wall thickness, or use service saddles or reducing flanges on tees.
7. Lining and Coatings
a. Lining: Double thickness cement mortar lining seal coated with asphaltic material in accordance with AWWA C104, except where unlined pipe is specifically indicated on the Drawings.
b. Coating: Exterior of exposed pipe shall be painted in accordance with Section 09960.
H. Polyvinyl Chloride - Pressure (PVC-P)
1. Pipe: Schedule 80 as listed, Class 12454-B, rigid, unplasticized pipe made from polyvinyl chloride in accordance with ASTM D1784 and D1785.
2. Fittings: Schedule 80 to match pipe, of the same material as the pipe, conforming to ASTM D2467.
3. Joints: Joints shall be solvent weld, except that threaded or flanged joints are to be used where required at specific locations
4. Cement: Solvent weld connections shall be made in strict accordance with the pipe manufacturer’s recommendations using a solvent cement and primer (if recommended) meeting ASTM D2564. Solvent cement for Sodium Hypochlorite piping shall be IPS 724 CPVC solvent cement or equal. Primer shall be IPS P-70 primer or equal.
5. Pipe Cleaner: In accordance with the pipe manufacturer’s recommendations.
6. Lining and Coatings
a. Lining: None.
b. Coating: Exterior of exposed pipe shall be painted in accordance with Section 09960.
7. Double Containment Piping: Provide double containment pipe for PVC pipe and tubing as noted in the Pipe Schedule and elsewhere in the Drawings and Specifications.
a. Type: Schedule 40 PVC containment pipe, conforming to ASTM D1784.
Fittings shall be fabricated solid or two-piece hinged. b. Size
Carrier Pipe Size Containment Pipe Size
1/2-inch 2-inch
3/4-inch through 1-inch 3-inch
1-1/2-inch through 2-inch 4-inch
2-1/2-inch through 4-inch 6-inch
c. Joints: Solvent weld, except flanged where required. Use two-piece hinged couplings where necessary. Do not make up joints until leak test of primary carrier pipe has been successfully completed.
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d. Supports: Carrier pipe shall be installed concentric to the containment pipe using supports or guides within the containment pipe. Space supports so that the carrier pipe deflection does not exceed 0.1-inch.
Supports shall be designed to allow pulling of leak detection cable through the containment pipe.
e. Provide continuous leak detection/draw off points at local low points within the system.
f. Manufacturers: Asahi/America; George Fischer; or equal.
I. Polyvinyl Chloride - Drainage (PVC-D)
1. Pipe and Fittings: Polyvinyl chloride sewer pipe.
a. 4-inch through 15-inch nominal size: ASTM D3034, SDR 26. b. 18-inch through 48-inch nominal size: ASTM F679.
2. Joints: Elastomeric gasket joints, ASTM D3212.
3. Gasket: Nitrile, ASTM F477.
4. Lining and Coatings
a. Lining: None.
b. Coating: Exterior of exposed pipe shall be painted in accordance with Section 09960.
2.03 MISCELLANEOUS PIPING CONNECTIONS
A. Refer to pipe material specifications for typical pipe joints. Furnish other joint devices where called for on the Drawings, as specified below.
B. Flexible Couplings and Flanged Coupling Adapters(FCAs)
1. Furnish and install flexible couplings and flanged coupling adapters where shown on the Drawings or required by installation.
2. All couplings shall be restrained and suitable for a minimum working pressure of 150 psi.
3. Longitudinal movement and angular defections capabilities shall meet AWWA C219.
4. Materials
a. Sleeves: Galvanized steel or have a fusion bonded coating suitable for potable water.
b. Followers: Cast iron, ductile iron, or steel.
c. Sleeve Bolts: Type 304 SS.
d. Gaskets: Synthetic rubber suitable for potable water.
5. Manufacturers
a. Pipe sizes with identical outside diameters: Smith-Blair Type 411 or 441; Dresser Style 38 or 153; or equal.
b. Connecting pipes with slightly different outside diameters: Smith-Blair Type 413 or R441; Dresser Style 62 or 162; or equal.
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C. Rubber Expansion Joints
1. Type: Built-up single arch expansion joints with full flanges and retainer rings.
Provide filled arch type for services with solids.
2. Materials: EDPM cover over reinforced nylon or polyester body and EDPM tube with galvanized steel retainer ring. Cover shall have protective coating where installed outdoors.
3. Pressure and Temperature Rating
a. Up to 12-inch-diameter: 190 psi, 250°F
b. Larger than 12-inch-diameter: 80 psi, 250°F
4. Manufacturers: Proco Series 230; Garlock Style 204HP
5. Provide galvanized steel control rod-compression sleeve assembliesfor all rubber expansion joints, except where specifically omitted in Drawings. The number and size of the control rods shall be as required for the test pressure of the pipe system or 50 psi, whichever is greater.
6. Provide full size intermediate metal pipe flanges where rubber spool connects with wafer-style valves, lug-style valve, or other items that do not have full face metal flanges.
2.04 MISCELLANEOUS PIPING ACCESSORIES
A. Warning Tape
1. Provide a single line of plastic warning tape and magnetic warning tape for installation above all buried pipes.
2. Plastic Warning Tape
a. Print two messages on the tape with bold letters approximately 2” high.
Messages shall be repeated at minimum every 2 feet.
1) First message: CAUTION CAUTION CAUTION
2) Second message: BURIED LINE BELOW
a) Provide the appropriate pipeline descriptorin the second message (e.g., WATER, SEWER, STORM, CHEMICAL,
ELECTRICAL).
b. Dimension: 6-inch wide; 0.005-inch thick.
c. Material: Inert plastic material suitable for direct burial; capable of stretching to twice its original length.
3. Magnetic Warning Tape
a. Print messages on the tape with bold letters approximately 2” high.
Message shall be repeated at minimum every 4 feet.
1) Message: CAUTION BURIED LINE BELOW
a) Provide the appropriate pipeline descriptor in the
message (e.g., WATER, SEWER, STORM, CHEMICAL,
ELECTRICAL).
b. Dimension: 3-inch wide; 0.005-inch thick.
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c. Material: Acid and alkali-resistant polyethylene; 1,500 psi strength and 140% elongation value.
4. Color: Colors shall meet the APWA Color-Code standard for identification of buried utilities.
5. Manufacturers
a. Brady;
b. Seton;
c. Or equal.
B. Service Saddles
1. On Ductile Iron Pipe:
a. Materials: Ductile iron saddle with electro-galvanized straps and hardware, and nitrile or neoprene gaskets.
b. Type: For ductile iron pipe 4 inches and less, single strap saddles may be used. For pipe greater than 4-inch, double strap saddles shall be used. c. Manufacturers: Smith-Blair Model 311 or 313; R. H. Baker and Company Series 180-0; or equal
C. Link Seals
1. Where shown on the plans, provide link seals and compatible wall sleeves with weep ring for wall penetrations.
2. Use manufacturersrecommended service designation unless noted otherwise.
3. Type: Linked rubber sealing elements and pressure plates tightened together with stainless steel bolts.
4. Manufacturers
a. Thunderline Corporation;
b. Calpico;
c. Or equal.
PART 3 - EXECUTION
3.01 INSTALLATION OF PIPE
A. General
1. All pipes shall be carefully placed and supported at the proper lines and grades and, where possible, shall be sloped to permit complete drainage. Piping runs shown on the Drawings shall be followed as closely as possible, except for minor adjustments to avoid architectural and structural features. If major relocations are required, they shall be approved by the Engineer.
2. Wherever a pipe three inches in diameter and larger passes from concrete to earth, a flexible pipe coupling, shall be installed within 1 foot of the concrete.
Particular care shall be taken to ensure a full support of the pipe in the earth between and beyond the joints.
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3. When installing buried PVC pipe, it shall be “snaked” in the trench. In addition, PVC pipe shall not be laid when temperature is 32°F, or below. Piping shall be installed without springing or forcing the pipe in a manner which would set up stresses in the pipe, valves, or connected equipment.
B. Exposed Pipe
1. Exposed pipe shall mean any pipe not buried or encased in concrete. In erecting exposed pipe a sufficient number of screw unions, flanged or grooved end type jointsshall be used to allow any section or run of pipe to be disconnected without taking down adjacent runs. Flanges and grooved couplings shall be employed on pipes 2-1/2 inches and larger. The provision of an adequate number of appropriate take-down fittings must be rigidly adhered to whether or not such fittings are indicated on the Drawings. Take-down fittings shall also be provided within two feet of threaded valves and other appurtenances. Where piping passes through concrete or masonry walls, take-down fittings shall be employed within 3 feet of the wall.
2. All exposed pipelinesshall accommodate expansion and contraction forces by the use of expansion joints, anchors, and pipe guides. Where pipes cross structure expansion joints, rubber spherical molded type pipe expansion joints with restraining rods shall be installed whether specifically shown or not.
3. All unrestrained joints in pressure pipelines, including bell and spigot, flexible couplings, expansion joints and flange adapters shall have tension bars (tie rods) provided in accordance with AWWA M11 Design Manual, Figures 19.15 and
19.16, and Tables 19.7 and 19.8. Thrust protection shall be for 1-1/2 times the specified test pressure for the pipe.
4. Where piping conveying liquids passes over motor control centers, electrical panels and other electrical devices, install a protective drainage tray below the piping.
C. Buried Pipe
1. General
a. Trenching, bedding, and backfill for buried piping shall be as shown on the Drawings and as specified in Section 02300.
b. Buried pipe shall be prepared as herein before specified and shall be laid on the prepared granular base and bedded to ensure uniform bearing. No pipe shall be laid in water or when, in the opinion of the Engineer, trench conditions are unsuitable. Joints shall be made as herein specified for the respective types. Takenecessary precautionsto prevent uplift and floating of the pipe prior to backfilling.
c. Where no pipe grade elevations are shown on the Drawings, install buried piping with at least 3 feet of coverto finished grade. Where piping crosses under buried electrical ducts, provide at least 4 feet 6 inches of cover.
Provide 12 inches minimum separation between the buried pipes and ducts.
d. If possible, avoid crossing water pipe under sewer pipe. Where a water pipe crosses under a sewer pipe, there shall be no jointsin the water pipe
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within 10 feet of the crossing and provide 1 foot minimum vertical separation between the pipes at the crossing.
e. Provide each pipe with a firm, uniform bearing for its full length in the trench except at field joints. Do not lay pipe in water or when trench conditions or weather are unsuitable for such work.
f. Piping under slabs and structures shall be encased in concrete unless otherwise directed by the Engineer.
g. Where piping leaves a structure or concrete encasement, provide a joint capable of angular deflection within 12 inches of the structure for pipes 12-inch and smaller or as shown on the Drawings for larger pipe sizes.
Conform to details on the Drawings.
2. Gravity Lines
a. Laying of gravity pipelines shall proceed upgrade with the spigot ends pointing in the direction of flow. Each piece shall be laid true to line and grade and in such manner as to form a close concentric joint with the adjoining pipe and to prevent sudden offsets in the flow line. Asthe work progresses, the pipe interiorshall be cleared of all dirt and debris of every description. Where clearing after laying is difficult because of small pipe size, a suitable swab or squeegee shall be kept in the pipe and pulled forward past each joint immediately after jointing has been completed.
Pipe shall not be laid when the condition of the trench or the weather is unsuitable. At times when work is not in progress, open ends of pipe and fittings shall be closed.
3. Warning Tape:
a. Install a single line of plastic warning tape 2.5 feet above the centerline of each buried pipe.
b. Install magnetic warning tape 1 to 1.5 feet below ground and parallel to all buried pipes
c. Spread tape flat with message side up before backfilling.
4. All buried metal parts such as valves and bolt-ups not cement mortar coated shall be coated with two coats of bitumastic in accordance with Section 13111 and encased with two sheet of 8-mil minimum thickness polyethylene to form a continuous and all-encompassing layer of polyethylene between the protected metal and surrounding earth. All polyethylene shall be secured in place with 10- mil polyethylene tape.
5. Cathodic Protection: See Section 13111 for cathodic protection of buried metal pipes.
6. Dielectric Connections: See Section 13111 for insulating dissimilar metals.
D. Installation Specifics
1. CISP
a. Bell and Spigot: Fold and insert one-piece rubber gasket into properly cleaned hub. Apply lubricant to gasket and to spigot. Lubricant shall be a type recommended by the pipe and gasket manufacturers. Push or draw
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spigot into gasketed hub with a pulling tool devised especially for this purpose.
b. No Hub: Install in accordance with Cast Iron Soil Pipe Institute Pamphlet No. 100.
c. Comply with UPC and IAPMO IS6-89 and UPC 1991 interpretation of UPC Par. 316 (b)(2).
2. CUP
a. Bends shall be made in a manner that does not crimp or flatten pipe. b. Dielectric unions shall be installed at connections with ferrous piping. c. Pipe shall have joints squarely cut clean, soldered joints shall be properly fluxed and heated before solder is placed in the joint. Joints must be driven up tight before solder is added.
d. Install piping tight to slabs, beams, joists, columns, walls, and other permanent elements of the building. Provide space to permit insulation applications, with 1-inch clearance outside the insulation. Allow sufficient space above removable ceiling panels to allow for panel removal. e. Install drains at low points in mains, risers, and branch lines consisting of a tee fitting, ¾-inch ball valve, and short ¾-inch threaded nipple and cap. f. Exterior Wall Penetrations: Seal pipe penetrations through exterior walls using steel sleeves and mechanical sleeve seals.
g. Fire Barrier Penetrations: Where pipes pass through fire rated walls, partitions, ceilings, and floors, maintain the fire rated integrity. h. Install branch connections to mains using tee fittings in main with takeoff out the bottom of the main, except for up-feed risers, which shall have take off out the top of the main line.
i. Install strainers on the supply side of each control valve, pressure reducing valve, pressure regulating valve, solenoid valve, inline pump, and elsewhere as indicated. Install nipple and ball valve in blowdown connection of strainers 2 inches and larger.
3. CUT
a. Install in accordance with tube and fitting manufacturers' instructions.
Make buried connections in junction boxes.
4. DIP-B
a. Install buried pipe in accordance with AWWA C600.
b. Support and brace encased pipe to support the pipe and to prevent movement during testing and placement of the concrete encasement.
The braces and supports shall be erected of materials and by methods that will prevent any future contact of the pipe with the environment surrounding the encasement.
c. Pull the slack out of restrained joints after they are made up. d. Provide an insulated flanged joint on all buried ductile iron piping 6 inches in diameter and larger within 2 feet of each structure. Provide
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an electrolysis test station with a pair of leads on each side of the insulated flange.
e. Wrap buried pipe with polyethylene encasement. See Section 13111.
5. DIP-F
a. Flanged joints shall be made up tight with care being taken to avoid undue strain in the flanges, fittings, and other accessories. b. Bolt holesshall be aligned for each flanged joint. Boltsshall be fullsize for bolt holes; use of undersize bolts to make up for misalignment of bolt holes or for any other purpose will not be permitted.
c. Adjoining flange faces shall not be out of parallel to such a degree that the flanged joint cannot be made watertight without overstraining the flange. Any flanged pipe or fitting whose dimensions do not allow the making of a proper flanged joint as specified herein shall be replaced by one of the proper dimensions.
d. Clean flanges before jointing is started.
e. Buried flanged pipe connectionsshall be made with the smallest practical "bell" hole. After the joint is completed take special care to completely fill the "bell" hole under and around the pipe with compacted backfill.
6. PVC-P and PVC-D
a. Place PVC pipe within the installation areas at least 24 hours prior to installation to permit temperature equalization.
b. Cut pipe ends squarely, ream and deburr inside and out. c. Solvent Weld Joints: Clean pipe ends and sockets and join in strict conformance with the pipe manufacturer's instructions. Make joints in accordance with ASTM D2855. Handle solvent cements and primers in accordance with ASTM F402.
d. Threaded Connections: Use a short nipple, threaded at one end, socket at the other. Provide thread sealant in accordance with the pipe manufacturer's recommendations. Take care not to overtighten the connection.
3.02 MODIFICATIONS AND CONNECTIONS TO EXISTING PIPING
A. Coordinate with the City of the existing pipeline to be connected to prior to making connection.
B. Perform demolition of existing pipelines and yard piping as shown or necessary to make connection. Preserve, in undamaged condition, piping that is to remain and where connections are to be made as part of the Work.
C. Modify and connect to existing piping in accordance with the materials, joint requirements, welding, coatings, linings, and other provisions of this Section. Where specific details are indicated on the Drawings, provide the pipe connections, joints, fittings, and appurtenances as indicated.
D. Coordinate with the City to have the pipeline de-energized. Affect lock-out/tag-out procedures as necessary to prevent the accidental use of the pipeline.
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E. Carefully cut existing pipe using saws and cutting equipment acceptable to Engineer. Do not torch cut metallic pipe for preparation of pipe at connections.
F. Grind ends of steel pipe to remove corrosion and foreign materials where sleeve couplings are to be installed. Powertool clean and epoxy coat pipe ends prior to assembly for sleeve and grooved end-type couplings.
G. Use pipe fittings for modifications and connections. Do not use saddle-type connections unless specifically indicated on the Drawings.
H. Complete pressure testing and disinfection of pipeline and obtain City’s approval prior to making connectionsto existing piping systems, unless otherwise indicated.
3.03 INSTALLATION OF PIPE CONNECTIONS
A. Flexible Couplings and FCAs
1. Prior to installation, thoroughly clean oil, scale, rust, and dirt from the pipe to provide a clean seat for the gasket. Wipe gaskets clean before they are installed.
2. If necessary, flexible couplings and flanged coupling adapter gaskets may be lubricated with soapy water or manufacturer's standard lubricant before installation on the pipe ends.
3. Install in accordance with the manufacturer's instructions and recommendations.
4. Tighten bolts progressively, drawing up bolt on opposite sides a little at a time until all bolts have a uniform tightness. Workers tightening bolts shall be equipped with torque-limiting wrenches.
B. Flexible Expansion Joints
1. Install in accordance with the manufacturer's instructions and recommendations.
2. Connect expansion joints only to full-face metal flanges.
3. Install control rod-compression sleeve assemblies with control rod nuts snug, to relieve stress on adjacent pipe, except at buried locations. Comply with manufacturer’s instructions.
4. Paint buried galvanized steel retainer rings, bolts and other appurtenances in accordance with Section 09960.
3.04 PIPE IDENTIFICATION
A. Identify all exposed piping in this project with painting, banding, service name labels, and directional arrows. See Section 15076.
3.05 CLEANING
A. The interior of all pipelines shall be thoroughly cleaned of all dirt, loose scale, sand, and all foreign material prior to connection of pipe to equipment, control and regulating devices, and instrumentation and prior to testing. Pump suction lines shall be cleaned prior to operation of pumps.
B. Cleaning shall be accomplished by flushing with water at a velocity of at least 3 feet per second or by pulling a tightly fitting cleaning ball or swab through the pipe.
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C. No test shall commence until the pipeline is completely cleaned to the satisfaction of the Engineer.
3.06 FIELD TESTING
A. All pipelines installed in this project shall be subject to field and acceptance tests as specified in Sections 15951 and 15996.
3.07 DISINFECTION
A. Clean and disinfect potable water systems in accordance with the procedures in Section 11500.
B. Disinfection shall follow successful pressure testing.
C. All new potable water pipe sections shall be disinfected prior to making final connection to existing active operating pipelines.
END OF SECTION
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SECTION 15060
PIPE HANGERS AND SUPPORTS
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Hangers and supports for all piping systems specified in Sections 15050.
B. Thissection does not include pipe supportsfor fire sprinklersystems, pipe anchors, guides or seismic restraints.
C. Forseismic restraint requirements for piping, see Section 15097.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this section
1. Section 01330 – Submittals
2. Section 01610 – Seismic Anchorage and Bracing
3. Section 05501 – Anchor Bolts and Anchoring Devices
4. Section 15050 – Piping Systems
5. Section 15097 – Seismic Restraints for Piping
1.03 QUALITY CONTROL
A. Operating Conditions
1. The hangers and supports specified in this section are provided to resist pipe loads occurring primarily in the downward (gravity) direction. For the purpose of pipe hanger and support selection, this section establishes pipe support classifications based on the operating temperatures of the piping contents. Pipe support classifications are as follows:
a. Hot Systems: A. 120F to 450F.
b. Ambient Systems: B. 60F to 119F.
c. Cold Systems: C-1. 33F to 59 F, C-2. -20F to 32F.
B. Hanger and Support Selection
1. Select pipe hangers and supports as specified. Base selections upon the pipe support classifications specified in this section and any special requirements which may be specified in the contract documents.
2. Review the piping layout in relation to the surrounding structure and adjacent piping and equipment before selecting the type of support to be used at each hanger point.
3. Design and select hangers and supports to withstand all static and specified dynamic conditions of loading to which the piping and associated equipment may be subjected. As a minimum, consider the following conditions:
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a. Weights of pipe, valves, fittings, insulating materials, suspended hanger components, and normal fluid contents.
b. Weight of hydrostatic test fluid or cleaning fluid if normal operating fluid contents are lighter.
c. Reaction forces due to the operation of safety or relief valves. d. Wind, snow, or ice loadings on outdoor piping.
4. Size hangers and supports to fit the outside diameter of pipe, tubing, or, where specified, the outside diameter of insulation.
5. Where negligible movement occurs at hanger locations, use rod hangers for suspended lines, wherever practical. For piping supported from below, use bases, brackets or structural cross members.
6. Forthe suspension ofsize 2-1/2” and larger pipe and tubing, use hangers capable of vertical hanger component adjustment under load.
7. Provide supporting systems which provide for and control the free or intended movement of the piping including its movement in relation to that of connected equipment.
8. Where there is horizontal movement at a suspended hanger location, select hanger components to allow for swing. Do not permit the vertical angle of the hanger rod to exceed 4º at any time.
9. Do not permit contact between a pipe and hanger or support component, constructed of dissimilar metals. Prevent contact between dissimilar metals when supporting copper tubing by using copper-plated, rubber, plastic or vinyl coated, or stainless steel hanger and support components.
10. Unless otherwise specified, existing pipes and supports shall not be used to support new piping.
11. Unless otherwise specified, pipe support components shall not be attached to pressure vessels.
12. Stock hanger and support componentsshall be used wherever practical.
1.04 INDUSTRY STANDARDS
A. This section contains references to the following documents. They are a part of this section as specified and modified. In case of conflict between this section and the listed documents, the requirements of this section shall prevail.
B. Unless otherwise specified, references to documents shall mean the documents in effect at the time of Advertisement for Bids or Invitation to Bid (or on the effective date of the Agreement if there were no Bids).
C. If referenced documents have been discontinued by the issuing organization, references to those documents shall mean the replacement documents issued or otherwise identified by the organization or, if there are no replacement documents, the last version of the document before it was discontinued.
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D. Where document dates are given in the following listing, reference to those documents shall mean the specific document version associated with that date, whether or not the document has been superseded by a version with a later date, discontinued, or replaced.
Reference Title
AISC Manual of Steel
Construction
American Institute of Steel Construction, Manual of Steel Construction, - 13th Edition
CBC California Building Code
FEDSPEC WW-H-171e Hangers and Supports, Pipe
MFMA-4 Metal Framing Manufacturer’s Association, Metal Framing Standards Publication
MSS SP-58 Manufacturers Standardization Society Pipe Hangers and Supports— Materials, Design and Manufacture
MSS SP-69 Manufacturers Standardization Society Pipe Hangers and Supports— Selection and Application
1.05 SUBMITTALS
A. Provide hanger and support locations, load calculations, and manufacturer layout and detail drawings as part of the submittals for equipment and piping coordination and installation drawings required in Section 15050.
B. The load and support design calculations shall be stamped and signed by a licensed Civil or Structural Engineer in the State of California. Comply with Sections 01610 and 05501.
Coordinate calculations with those required by Section 15097.
PART 2 - PRODUCTS
2.01 MANUFACTURERS
A. B-Line
B. Carpenter & Paterson
C. Kin-Line
D. Anvil International
E. Michigan
F. Pipe Shields Incorporated
G. Superstrut
H. Unistrut
I. Or equal as specified in Section 01330
J. Comply with MSS SP-69 and FEDSPEC WW-H-171e for pipe support components and MFMA-4 for framing systems
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2.02 PRODUCTS
A. Material
1. Pipe hangers and supports, structural attachments, rack and trapeze supports, fittings and accessories: 316 stainless steel.
2. Nuts, bolts, washers, and other fasteners: Type 316 stainless steel.
3. Safety end caps on all framing chanel.
4. Comply with MSS SP-58 forsupports and MFMA-4 for framing systems.
B. Pipe Hangers and Supports
1. Type 1 – Clevis Pipe Hanger, configuration and components equivalent to MSS and FEDSPEC Type 1.
a. Steel pipe (insulated): B-Line B3100, Anvil International 260, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3100, Anvil International 260, or equal. c. Cast and ductile iron pipe: B-Line B3102, Anvil International 590, or equal. d. Copper pipe (uninsulated): B-Line B3104 CT, Anvil International CT-65, or equal.
e. Copper pipe (insulated): B-Line B3100, Anvil International 260, or equal, with insulation shield.
f. Plastic pipe: B-Line B3100 C, Carpenter & Paterson Fig. 100PVC, or equal.
2. Type 2 – J Pipe Hanger, configuration and components equivalent to MSS Type 5 a. Steel pipe: B-Line B3690, Anvil International 67, Michigan model 418, or equal.
b. Copper and plastic pipe: Michigan model 419, Unistrut J 1205N series, or equal.
3. Type 3 – Double Bolt Pipe Clamp, configuration and components equivalent to MSS and FEDSPEC Type 3.
a. Steel pipe (insulated): B-Line B3144, Anvil International 295, or equal, with insulation shield. Insulation shield is optional for hot and ambient systems.
b. Steel pipe (uninsulated): B-Line B3144, Anvil International 295, or equal. c. Copper pipe (insulated only): B-Line B3144, Anvil International 295, or equal, with insulation shield.
4. Type 4 – Adjustable Roller Hanger, configuration and components equivalent to MSS Type 43 and FEDSPEC Type 44.
a. Steel pipe (insulated): B-Line B3110, Anvil International 181, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3110, Anvil International 181, or equal. c. Copper pipe (insulated only): B-Line B3110, Anvil International 181, or equal, with insulation shield.
d. Plastic pipe: B-Line B3110, Anvil International 181, or equal.
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5. Type 5 – Single Pipe Roll, configuration and components shall be equivalent to MSS Type 41 and FEDSPEC Type 42.
a. Steel pipe (insulated): B-Line B3114, Anvil International 171, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3114, Anvil International 171, or equal. c. Plastic pipe: B-Line B3114, Anvil International 171, or equal.
6. Type 6 – Framing Channel Pipe Clamp
a. Steel pipe (uninsulated):
1) Pipe size 3/8” and 1/2”: 16-gage;
2) 3/4” through 1 1/4”: 14 gage;
3) 1-1/2” through 3”: 12-gage;
4) 3 1/2” through 5”: 11- gage;
5) 6 and 8”: 10-gage;
b. Michigan Model 431, Powerstrut PS 1100, Unistrut P 1109 series, or equal.
c. Steel pipe (insulated): Pipe clamp as described in Paragraph 2.02 B.6.a with insulation shield.
d. Copper (uninsulated) and plastic pipe:
1) Pipe size 3/8” and 1”: 16-gage;
2) 1-1/4” and 1-1/2”: 14-gage;
3) 2” through 3”: 12-gage;
4) 4”: 11-gage;
5) Clamp: copper-plated, plastic coated or lined with dielectric material;
6) Michigan model 432, Powerstrut PS 1200, Unistrut P 2024C and P 2024PC series, or equal.
e. Copper pipe (insulated): Pipe clamp shall be as described in Paragraph
2.02 B.6.a with insulation shield.
7. Type 7 – U-Bolt Configuration equivalent to MSS and FEDSPEC Type 24. a. Steel pipe (uninsulated): Anvil International. 137, B-Line B3188, or equal. b. Steel pipe (insulated): Anvil International. 137, B-Line B3188, or equal, with insulation shield.
c. Cast and ductile iron pipe: Anvil International. 137, B-Line B3188, or equal.
d. Copper pipe (uninsulated): Carpenter & Paterson Fig. 222 CT, B-Line B3501 CT, Anvil International. 137C, or equal.
e. Copper pipe (insulated): Anvil International. 137, B-Line B3188, or equal, with insulation shield.
f. Plastic pipe: Anvil International. 137C, Michigan model 151, B-Line B3188 C, or equal.
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8. Type 8 – Adjustable Pipe Roll Support
a. Steel pipe (insulated): B-Line B3122, Anvil International. 177, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3122, Anvil International. 177, or equal. c. Copper pipe (insulated only): B-Line B3122, Anvil International. 177, or equal, with insulation shield.
d. Plastic pipe: B-Line B3122, Anvil International. 177, or equal.
9. Type 9 – Welded Pipe Stanchion
a. Minimum material thickness: standard schedule pipe, cut to match contour of the pipe elbow.
b. Limit use of this support to ambient systems only.
10. Type 10 – Pipe Stanchion Saddle and Yoke, comply with MSS Type 37 and FEDSPEC Type 38.
a. Steel pipe (insulated): Carpenter & Paterson Fig. 125, B-Line B3090, or equal, with insulation shield.
b. Steel pipe (uninsulated): Carpenter & Paterson Fig. 125, B-Line B3090, or equal.
c. Cast and ductile iron pipe: Carpenter & Paterson Fig. 125, B-Line B3090 NS, or equal.
d. Copper pipe (uninsulated): Carpenter & Paterson Fig. 125, B-Line B3090, or equal, with insulation shield or lined with dielectric material. e. Copper pipe (insulated): Carpenter & Paterson Fig. 125, B-Line B3090, or equal, with insulation shield.
f. Plastic pipe: Carpenter & Paterson Fig. 125, B-Line B3090, or equal.
11. Type 11 – Offset Pipe Clamp, Provided with configuration and components specified using standard designs offered by a pipe hanger component manufacturer.
a. Steel pipe (insulated): B-Line B3148, Anvil International 103, or equal, with insulation shield.
b. Steel pipe (uninsulated): B-Line B3148, Anvil International 103, or equal. c. Cast and ductile iron pipe: B-Line B3148 NS, Anvil International 103, or equal.
d. Copper pipe (insulated): B-Line B3148, Anvil International. 103, or equal, with insulation shield.
e. Copper pipe (uninsulated): B-Line B3148, Anvil International. 103, or equal, lined with dielectric material.
f. Plastic pipe: B-Line B3148, Anvil International. 103, or equal. g. Vertical pipe support applications: as specified above except do not use insulation shields for insulated pipe.
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12. Type 12 – Riser Clamp, configuration and components equivalent to MSS and FEDSPEC Type 8.
a. Steel pipe (insulated): B-Line B3373, Anvil International 261, or equal. b. Steel pipe (uninsulated): B-Line B3373, Anvil International 261, or equal. c. Cast and ductile iron pipe: B-Line B3373, Anvil International 261, or equal. d. Copper pipe (insulated): B-Line B3373 CT, Anvil International CT-121, Michigan model 511, or equal.
e. Copper pipe (uninsulated): B-Line B3373 CT, Anvil International CT-121, Michigan model 511, or equal.
f. Plastic pipe: B-Line B3373, Anvil International. 261c, or equal.
13. Type 13 – Framing Channel Pipe Strap, configuration equivalent to MSS Type 26. a. Steel pipe (uninsulated): Superstrut No. C-708-U, Powerstrut PS 3126, Kin-Line No. 477, or equal.
b. Steel pipe (insulated): Superstrut No. C-708-U, Powerstrut PS 3126, KinLine No. 477, or equal, with insulation shield. c. Copper pipe (uninsulated): Superstrut No. C-708-U, Powerstrut PS 3126, Kin-Line No. 477, or equal, with insulation shield or lined with dielectric material.
d. Copper pipe (insulated): Superstrut No. C-708-U, Powerstrut PS 3126, Kin-Line No. 477, or equal, with insulation shield.
e. Plastic pipe: Superstrut No. C-708-U, Powerstrut PS 3126, Kin-Line No. 477, or equal.
C. Rack and Trapeze Supports
1. General
a. Unless otherwise specified, provide trapeze and pipe rack components minimum thickness of 12 gage, with a maximum deflection 1/240 of the span.
2. Type 20 – Trapeze Pipe Support
a. For trapeze pipe support cross members, use framing channel as specified in Paragraph 2.02 E.5. For flat plate fittings, 1-5/8” square standard design manufactured by framing channel manufacturer, Unistrut P2471, B-Line B202-2, or equal.
3. Type 21 – Pipe Rack Support
a. For post and cross members, use framing channel as specified in Paragraph 2.02 E.5. For pipe rack fittings, use standard design manufactured by framing channel manufacturer. For 90º fittings, use gusseted Unistrut P2484, B-Line B844, or equal. Provide post base fittings as specified in Paragraph 2.02 D.5.
D. Structural Attachments
1. Type A –Insert For Concrete:
a. Concrete inserts: Comply with MSS and FEDSPEC Type 18.
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b. Anvil International 282, Carpenter & Paterson Fig. 108, or equal.
2. Type B – Side Beam Bracket
a. Comply with MSS Type 34 and FEDSPEC Type 35.
b. Anvil International. 202, B-Line B3062, or equal.
3. Type C –Beam Clamp with Extension Piece
a. Comply with MSS and FEDSPEC Type 30.
b. Anvil International. 218 with Fig. 157 extension piece, B-Line B3054, or equal.
4. Type D – Beam Clamp with Eye Nut
a. Beam clamp and eye nut: forged stainless steel.
b. For configuration and components, comply with MSS and FEDSPEC Type
28. c. Anvil International. 292, Carpenter & Paterson Fig. 297, or equal.
5. Type E – Framing Channel Post Base
a. Standard design offered by framing channel manufacturer. b. Single channel: Unistrut P2072A, B-Line B280, or equal. c. Double channel: Unistrut P2073A, B-Line B281, or equal.
6. Type F – Welded Beam Attachment
a. Comply with MSS and FEDSPEC Type 22. B-Line B3083, Anvil International. 66, or equal.
7. Type G – Welded Steel Bracket
a. Comply with MSS Type 32 and FEDSPEC Type 33 for medium welded bracket.
b. Comply with MSS Type 33 and FEDSPEC Type 34 for heavy welded bracket.
8. Type H –Bracket
a. Carpenter & Paterson Fig. 340, or equal.
9. Type J – Adjustable Beam Attachment
a. Carpenter & Paterson Fig. 151, B-Line B3082, or equal.
10. Type K – Double Channel Bracket
a. Wall channel: single channel framing channel as specified in Paragraph
2.02 E.5.
b. Cantilever bracket: double framing channel assembly, Unistrut P2542 through P2546, B-Line B297-12 through B297-36, or equal.
11. Type L – Single Channel Bracket
a. Wall channel: single channel framing channel as specified in Paragraph
2.02 E.5.
b. Cantilever bracket: a single framing channel assembly, Unistrut P2231 through P2234, B-Line B198-6, B198-12, B196-18 and B196-24, or equal.
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12. Type M – Wall Mounted Channel
a. Wall channel: single channel framing channel as specified in Paragraph
2.02 E.5.
13. Type N – Pipe Stanchion Floor Attachment
a. Base plate: 1/2” minimum thickness.
b. Make anchor bolt holes 1/16” larger than the anchor bolt diameter. c. Fill space between the base plate and the floor with nonshrink grout.
E. Accessories
1. Hanger Rods
a. Rods: threaded on both ends or continuous threaded and sized as specified.
2. Weldless Eye Nut
a. Eye nut: forged stainlesssteel and complying with MSS and FEDSPEC Type
17. b. Manufacturer: Anvil International. 290, B-Line B3200, or equal.
3. Welded Eye Rod
a. Weld-eye rod closed. Make inside diameter of eye a bolt diameter 1/8” larger than the rod diameter.
b. Manufacturer: Anvil International. 278, B-Line B3211, or equal.
4. Turnbuckle
a. Turnbuckle: forged stainless steel and complying with MSS and FEDSPEC Type 13.
b. Manufacturer: Anvil International. 230, B-Line B3202, or equal.
5. Framing Channel
a. Framing channel: 1-5/8” square, roll formed, 12-gage. b. Provide channel with a continuous slot along one side with in-turned clamping ridges.
c. Single channel: Unistrut P1000, B-Line B22, or equal. d. Double channel: Unistrut P1001, B-Line B22A, or equal. e. Triple channel: Unistrut P1004A, B-Line B22X, or equal. f.
PART 3 - EXECUTION
3.01 HANGER AND SUPPORT LOCATIONS
A. Locate hangers and supports as near as possible to concentrated loads such as valves, flanges, etc.
B. Locate hangers, supports and accessories within the maximum span lengths specified in the contract documents to support continuous pipeline runs unaffected by concentrated loads. Indicate hanger and support locations and components on the piping layout
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drawings required by Paragraph 1.05. For pipe support submittals, provide a complete cross reference of each support by mark number, including the page number on which each mark number can be found. Set up the cross reference to permit review from the mark numbers to the drawings, not the other way around.
C. Locate at least one hanger or support within 2’ from a pipe change in direction.
D. Locate hangers and supports to ensure that connections to equipment, tanks, etc., are substantially free from loads transmitted by the piping.
E. Where piping is connected to equipment, a valve, piping assembly, etc., that will require removal for maintenance, support piping so temporary supports are not necessary.
F. Locate pipe supports to prevent "pockets" from forming in pipe between supports due to excessive deflection under load from weight of pipe, medium in the pipe, insulation, valves and fittings.
3.02 INSTALLATION
A. Construct welded and bolted attachments to the building structural steel which comply with the AISC Manual of Steel Construction. Unless otherwise specified, do not drill or burn holes in the building structural steel.
B. Do not use hanger components for purposes other than for which they were designed.
Do not use components for rigging and erection purposes.
C. Install itemsto be embedded before concrete is poured. Fasten embedded itemssecurely to prevent movement when concrete is poured.
D. Use embedded anchor boltsthatsatisfy the CBC provisionsinstead of concrete inserts for supports in areas below water surface or normally subject to submergence.
E. When hanger and support components are in contact with plastic pipe, make sure the components are free of burrs and sharp edges.
F. Ensure rollers roll freely without binding.
G. Roughen finished floor to a ¼ inch amplitude beneath structural attachments and framing channel post bases prior to grouting. Place grout, free of voids and foreign material, between base plate and floor.
H. Cut and drill base plates to specified dimensions prior to welding stanchions or other attachments and prior to setting anchor bolts.
I. Provide plastic or rubber end caps at the exposed ends of all framing channels that are located up to 7’ above the floor.
3.03 ADJUSTMENTS
A. Adjust hangers and supports to obtain required pipe slope and elevation.
B. Use shims made of material that is compatible with the piping material.
C. Adjust stanchions prior to grouting their base plates.
END OF SECTION
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15076 - 1
Piping and Valve Identification Systems
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 15076
PIPING AND VALVE IDENTIFICATION SYSTEMS
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Identification systems for buried and exposed piping and valves.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section
1. Section 01330 – Submittals
2. Section 15110 – Valves and Appurtenances
1.03 REFERENCES
A. ANSI - American National Standard Specifications
1.04 SUBMITTALS
A. Comply with Section 01330.
B. Submit the following items:
1. Product Data: Manufacturer’s catalog information and description of items proposed for use.
2. Shop Drawings: Scaled drawings of custom-made signs and tags, showing style, text size, and colors.
3. Manufacturer’s standard color palette for color selection.
4. Samples of the materials to be used for piping and valve identification.
PART 2 - PRODUCTS
2.01 MANUFACTURERS
A. Brady Company;
B. Seton Name Plate Corporation;
C. Or equal.
2.02 PIPE MARKERS
A. Conform to ANSI A13.1.
B. Type: Plastic, mechanically attached snap-around or strap-on type; do not use adhesive applied type.
C. Use: Designed for use on dirty, rusty, wet, oily, or rough pipes. Indoor or outdoor use.
Service temperature range of -40ºF to 180ºF
D. Text: Non-fade ink; lettering size as indicated below:
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Outside Diameter of Pipe
(inches) (a) Length of Color Field (inches) Size of Letters (inches) Less than 1-1/2 8 1/2
1-1/2 through 2 8 3/4
2-1/2 through 6 12 1-1/4
8 through 10 24 2-1/2
Greater than 10 32 3-1/2
(a) For double contained pipe, outside pipe diameter shall be that of the containment pipe.
E. Provide directional arrows on labelsto indicate flow direction.
F. Pipe Marker Schedule
1. Colors below are not final. Colors may be modified to be consistent with painted pipe color coding. Verify colors with City. Colors will be selected from manufacturer’s standard.
Text Field Color Letter Color
Ammonia Sulfate Orange Black
Artesian Relief Green White
Backwash Green White
Drain Green White
Compressed Air Blue White
Ferric Chloride Orange Black
Filtered Water Green White
Filter-to-Waste Green White
Flush Line Green White
Potable Water Green White
Raw Water Green White
Sample Green White
Sewer Green White
Hypochlorite Orange Black
Storm Drain Green White
Surface Wash Green White
Treated Water Green White
2.03 VALVE TAGS
A. Plastic, fiberglass, or plastic material, 2-inch square with grommeted hole.
B. The tags shall be attached to valves with a brass jack chain. For buried installations use a nylon strap.
C. Lettering shall be stamped or cut into the tag at least 3/16-inch high.
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PART 3 - EXECUTION
3.01 PIPING IDENTIFICATION
A. Identify exposed piping in this project with pipe markersindicating system name and flow direction.
B. Apply pipe markers where piping enters or leavesthe wall or floor of a structure, adjacent to tanks or other hydraulic containments, at each valve, at each piping change in direction, and apply along piping runs not exceeding 16 feet on center.
C. Orient the pipe marker with the direction arrows pointing in the direction of flow.
D. Locate pipe markers for easy reading. Where pipes are located above normal line of vision, the lettering and directional arrowsshall be placed below the horizontal centerline of the pipe. Where pipes are below normal line of vision, lettering and directional arrows shall be above the horizontal centerline of the pipe.
3.02 VALVE IDENTIFICATION
A. Label valves with a valve tag identifying the pipeline contents, and eitherits valve number, or the area or item served by the valve for valves without a valve number.
B. Contents shall be as designated in the valve and accessory system schedule in Section 15110.
END OF SECTION
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15097 - 1
Seismic Restraints for Piping
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 15097
SEISMIC RESTRAINTS FOR PIPING
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Seismic restraints for bracing all piping systems specified in Section 15050.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section
1. Section 01330 – Submittals
2. Section 01610 – Seismic Anchorage and Bracing
3. Section 05501 – Anchor Bolts
4. Section 15050 – Piping Systems
1.03 DEFINITIONS
A. Longitudinal Direction: Direction parallel to the pipe axis.
B. Lateral Direction: Direction perpendicular to the pipe axis.
1.04 OPERATING CONDITIONS
A. Provide seismic restraints, specified in this section, to resist pipe movements and loads occurring as a result of an earthquake or other seismic event.
B. Unless otherwise specified, brace all piping to resist seismic loading caused by forces applied at the individual pipe’s center of gravity. Forseismic loading see Section 01610.
1.05 RESTRAINT SELECTION
A. Unless otherwise specified, select, locate and provide seismic restraints for piping in accordance with the contract documents.
B. Review the piping layout in relation to the surrounding structure and adjacent piping and equipment before selecting the restraint to be used at each point.
C. Seismic restraints may be omitted from the following installations:
1. Gas piping less than 1” inside diameter.
2. Piping in boiler and mechanical rooms less than 1-1/4” inside diameter.
3. All other piping less than 2-1/2” inside diameter.
4. All piping suspended by individual hangers 12” or less in length from the top of the pipe to the bottom of the support for the hanger.
D. Do not brace piping systems to dissimilar parts of a building or to dissimilar building systems that may respond in a different mode during an earthquake. Examples: wall and a roof; solid concrete wall and a metal deck with lightweight concrete fill.
E. Size restraints to fit the outside diameter of the pipe, tubing, or, where specified, the outside diameter of insulation.
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F. Do not permit contact between a pipe and restraint component of dissimilar metals.
Prevent contact between dissimilar metals when restraining copper tubing by the use of copper-plated, rubber, plastic or vinyl coated, or stainless steel restraint components.
G. Do not use branch lines to brace main lines.
H. Do not permit seismic bracing to limit the expansion and contraction of the piping system.
1.06 SUBMITTALS
A. Provide seismic restraint locations, load calculations, and manufacturer's drawings as specified in Paragraph 3.01 as part of the submittals for equipment and piping coordination and installation drawings required in Section 15050.
B. Provide seismic restraint load calculations for each seismically restrained pipe system prepared and signed by a civil or structural engineer currently registered in the State of California. See Section 01610 for seismic loading required.
PART 2 - MANUFACTURERS
2.01 MANUFACTURERS
A. Carpenter & Patterson.
B. B-Line.
C. Kin-Line.
D. Anvil International.
E. Michigan.
F. Pipe Shields Incorporated.
G. Superstrut.
H. Unistrut.
I. Or equal as specified in Section 01330.
2.02 PRODUCTS
A. Materials
1. Restraints, including braces and fittings, pipe and structural attachments, trapeze restraints, and accessories: Type 316 stainless steel.
2. Nuts, bolts and washers, fittings and accessories: Type 316 stainless steel.
3. Comply with MSS SP-58
B. Pipe Attachments
1. Type 1s - Clevis Restraint Attachment
a. Provide Type 1, clevis pipe hanger, as specified in Section 15060, 2.02.B.
2. Type 3s - Double Bolt Restraint Clamp:
a. Provide Type 3, double bolt pipe clamp, as specified in Section 15060,
2.02.B.
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3. Type 4s - Roller Restraint Attachment
a. Provide Type 4, adjustable roller hanger, as specified in Section 15060,
2.02.B.
b. Size hold down strap as follows:
1) 1” through 2” Pipe: 1” by 1/8” thick
2) 2-1/2” through 4” Pipe: 1-1/4” by 3/l6” thick
3) 6” Pipe: 2” by 3/l6” thick
4) 8” Pipe: 2-1/2” by 3/16” thick
5) 10” through 16” Pipe: 2-1/2” by 1/4” thick
6) 20” Pipe: 3” by 1/4” thick
7) 24” Pipe: 3” by 3/8” thick.
4. TypeE 7s - U-Bolt Restraint
a. Provide Type 7, U-bolt, as specified in Paragraph 15060, 2.02.B.
5. Type 13s - Framing Channel Strap Restraint
a. Provide Type 13, framing channel pipe strap, as specified in Paragraph 15060, 2.02.B.
6. Type 14s - Pipe Clamp Restraint
a. Provide with configuration and components equivalent to MSS and FEDSPEC Type 4.
b. Rod attachment and longitudinal brace connection stud shall be fabricated and welded by the manufacturer.
c. Steel pipe (insulated): Superstrut No. S-720, Kin-Line No. S475, or equal, with insulation shield.
d. Steel pipe (uninsulated): Superstrut No. S-720, Kin-Line No. S475, or equal.
e. Cast and ductile iron pipe: Superstrut No. S-720, Kin-Line No. S475, or equal.
f. Copper pipe (insulated): Superstrut No. S-720, Kin-Line No. S475, or equal, with insulation shield.
g. Copper pipe (uninsulated): Superstrut No. S-720, Kin-Line No. S475, or equal, with insulation shield or dielectric lining.
h. Plastic pipe: Superstrut No. S-720, Kin-Line No. S475, or equal.
C. Trapeze Restraints
1. General
a. Unless otherwise specified, provide trapeze members with a minimum steel thickness of 12-gage, with a maximum deflection 1/240 of the span.
2. Type 20s - Single Channel Lateral Restraint
a. Trapeze restraint cross member
1) 1-5/8” square framing channel, Unistrut P1000, B-Line B22, Superstrut A-1200, or equal.
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b. Pipe attachments
1) Type 13s or Type 7s specified in Paragraph 2.02.B.
c. Rod stiffeners and lateral brace
1) As specified in Paragraph 2.02.D.
3. Type 21s - Double Channel Lateral Restraint
a. Trapeze restraint cross member
1) a double channel manufactured assembly such as Unistrut P1001, B-Line B22A, Superstrut A-1202, or equal.
2) Pipe attachments
a) Type 13s or Type 7s specified in Paragraph 2.02.B.
b. Rod stiffeners and lateral brace
1) As specified in Paragraph 2.02.D.
4. Type 22s - Double Channel Longitudinal Restraint
a. Trapeze restraint cross member: a double channel manufactured assembly such as Unistrut P1001, B-Line B22A, Superstrut A-1202, or equal.
b. Pipe attachments
1) Type 13s or Type 7s specified in Paragraph 2.02.B.
c. Rod stiffeners, longitudinal and lateral braces
1) As specified in Paragraph 2.02.D.
D. Braces and Fittings
1. Seismic Brace Fitting
a. Provided for use with industry standard framing channel. b. Provide welded construction, two-piece linked fitting. c. Provide means to reduce noise and vibration transmission between the linked fitting parts.
d. Manufacturers
1) Superstrut C-749N series seismic brace,
2) Kin-Line No. 633 seismic connector fitting,
3) or equal as defined in Section 01330.
2. Hanger Rod Stiffener Assembly
a. Rod stiffener channel
1) 1-5/8” square framing channel, Unistrut P1000, B-Line B22, Superstrut A-1200, or equal.
b. Rod stiffener clamps, complete with channel nut
1) Superstrut ES-142, Kin-Line No. 635, or equal as defined in Section 01330.
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3. Type A1 Seismic Brace
a. Provide 1-5/8” square framing channel, Unistrut P1000, B-Line B22, Superstrut A-1200, Kin-Line No. 4112, or equal as defined in Section 01330.
4. Type A2 Seismic Brace
a. Provide 1-5/8” wide by 3-3/4” deep framing channel, Unistrut P5000, BLine B11, Superstrut H-1200, Kin-Line No. 8212, or equal as defined in Section 01330.
E. Structural Attachments
1. General
a. Unless otherwise specified, provide hanger rod structural attachments as specified in Section 15060.
b. Structural attachments for longitudinal and lateral seismic braces: as specified in Paragraph 2.02.D.
2. Type SA-1 Attachment
a. Brace fitting: asspecified in Paragraph 2.02.D.
b. Concrete anchors
1) As specified in Section 05501 with embedment and location dimensions as specified.
3. Type SA-2 Attachment
a. Brace fitting: asspecified in Paragraph 2.02.D.
b. Concrete anchors
1) As specified in Section 05501 with embedment and location dimensions as specified.
c. Framing channel
1) Asspecified in Paragraph 2.02.F.
4. Type SA-3 Attachment
a. Brace fitting
1) As specified in Paragraph 2.02.D.
b. Cap screw, lockwasher and hex nut materials and finish: compatible with structural steel material.
5. Type SA-4 Attachment
a. Brace fitting
1) As specified in Paragraph 2.02.D.
6. Type SA-5 Attachment
a. Brace fitting
1) As specified in Paragraph 2.02.D.
2) Angle: 4” x 3” x 3/8”.
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F. Accessories
1. Hanger Rods
a. Threaded on both ends or continuous threaded and sized as specified.
2. Framing Channel
a. Roll formed, 12-gage.
b. Provide channel with a continuous slot along one side with in-turned clamping ridges.
c. Manufacturers
1) Unistrut P1000 series,
2) B-Line B22 series,
3) Superstrut A-1200 series,
4) or equal as specified in Section 01330.
3. Rod Coupling
a. Provide with sight hole in center of coupling body.
b. Manufacturers
1) Anvil International. 135,
2) Superstrut H-119,
3) or equal as specified in Section 01330.
PART 3 - EXECUTION
3.01 PIPE RESTRAINT LOCATIONS
A. Locate the first seismic restraint on a piping system not more than 10’ from the main riser, entrance to a building or piece of equipment.
B. Brace cast iron pipe on each side of a change in direction of 90º or more. Brace orstabilize joints in risers between floors.
C. Brace no-hub and bell and spigot cast iron soil pipe longitudinally every 20’ and laterally every 10’.
D. Lateral bracing for one pipe section may also act as longitudinal bracing for the pipe section connected perpendicular to it, if the bracing is installed within 24” of the elbow or tee of the same size.
E. Indicate seismic restraint locations and components on the piping layout drawings required by Section 15050.
F. Provide a legend giving load information and restraint component selection at each restraint location.
G. Provide seismic restraint load calculations conforming to the requirements specified in Paragraph 1.06.
3.02 INSTALLATION
A. Use rod stiffener assemblies at seismic restraints for hanger rods over 6” in length.
Provide a minimum of two rod stiffener clamps on any rod stiffener assembly.
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B. Install lateral and longitudinal bracing between 45º above and 45º below horizontal, inclusive, relative to the horizontal centerline of the pipe.
C. Construct welded and bolted attachments to the building structural steel which comply with the AISC Manual of Steel Construction. Do not drill or burn holes in the building structural steel without approval of the City
D. Use embedded anchor bolts instead of concrete inserts for seismic brace installations in areas below water surface or normally subject to submerging.
E. Provide restraint components in contact with plastic pipe which are free of burrs and sharp edges.
F. Ensure rollers roll freely without binding.
G. Provide plastic or rubber end caps at the exposed ends of all framing channels that are located up to 7’ above the floor.
END OF SECTION
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15110 - 1
Valves and Appurtenances
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 15110
VALVES AND APPURTENANCES
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Furnish and install all valves and appurtenances asshown on the Drawings and described herein.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section
1. Section 01330 – Submittals
2. Section 09960 – High Performance Coatings
3. Section 11380 – Chemical Feed Equipment
4. Section 13224 – Pressure Filter
5. Section 15050 – Piping Systems
6. Section 15076 – Piping and Valve Identification Systems
7. Section 15400 – Building Plumbing and Fixtures
1.03 REFERENCES
A. ANSI – American National Standards Institute
B. ASTM – American Society for Testing and Materials
C. AASHTO – American Association of State Highway Transportation Officials D. AWWA – American Water Works Association
E. NSF – National Sanitation Foundation
1.04 SUBMITTALS
A. Comply with Section 01330.
B. Submit the following items:
1. Product data for valves and accessories to show that the items conform to the Specification requirements.
2. Manufacturer’s installation, operation, and maintenance manuals/bulletins and spare parts list.
PART 2 - PRODUCTS
2.01 GENERAL REQUIREMENTS
A. All materials in contact with the potable water, process water to be treated to potable water, or liquids (e.g., chemicals) to be added to the process/potable water shall be leadfree and shall meet the requirements of California Code of Regulations Title 22 Chapter 16 Article 7 regarding direct and indirect additives.
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Valves and Appurtenances
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B. All valves of each type shall be the product of one manufacturer.
C. Valves shall be complete with all necessary operating hand wheels, chain wheels, extension stems, valve boxes, floor stands, worm and gear operators, operating nuts, chains, hardware and fasteners, and wrenches which are required for the proper completion of the work included under this section.
D. Valves shall be furnished full line size unless specifically called out to be of reduced size.
Unless otherwise specified, valves shall be rated for 150 psi working pressure minimum.
E. All exposed valvesshall be furnished with operators, handwheels, levers, or othersuitable type wrench including handles as specified herein or as shown on the Drawings.
F. Valves 4-inch and larger located more than 7 feet above the floor level shall be furnished with chain operators. Chains shall be galvanized and shall extend to within 3 feet of the floor. Provide hook so that chain may be stored clear of walkways. All buried valves shall be provided with 2-inch-square operating nut and valve boxes.
G. For all buried valves provide valve boxes and extended stems to within 12 inches of finished grade.
H. Unless otherwise indicated, the direction of rotation of the wheel, wrench nut or lever to open the valve shall be counterclockwise.
I. All exposed valves and valve operators shall have a non-bleeding shop coat, unless otherwise specified.
2.02 SYSTEM DESIGNATION
A. Most valve and accessories to be furnished and installed are grouped based on service application. Each group is identified by valve and accessory system letter designation.
1. System A – Clean water, air
2. System B – Drainage, wastewater
3. System C – Chemicals, sample water
B. The schedule below liststhe valve and accessory system thatshall be used for each piping service.
Abbr. Piping Service Valve and Accessory System Notes
Process
AR Artesian Relief System B
BW Backwash Water System A
FL Flush Line System B
FTW Filter-to-Waste System A
FW Filtered Water System A 1
RW Raw Water System A 1
SA Sample System C 2
SW Surface Wash System A
TW Treated Water System A 1
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Abbr. Piping Service Valve and Accessory System Notes
Chemicals
AMS Ammonia Sulfate System C 2
FC Ferric Chloride System C 2
HYPO Sodium Hypochlorite System C 2
Water
PW Potable Water System A 3
Air
CA Compressed Air System A
VENT Vent -
Drain
D Building Drain -
DR Process Drain System B
SAD Sample Drain System C
SD Storm Drain -
SS Sanitary Sewer -
1. Refer to Section 13224 and Drawingsfor valves to be supplied by the Pressure Filter System Supplier.
2. Refer to Section 11380 for strainers, pulsation dampeners, pressure relief valves, back pressure valves, calibration cylinders, and injection assemblies for chemical services.
3. Refer to Section 15400 for building plumbing system valves and fixtures.
2.03 SYSTEM A – CLEAN WATER, AIR
A. Air Valves: AWWA C512, except as modified herein.
1. Air Release Valves(ARV)
a. Function: Releases accumulated air under pressure at pipeline high points.
b. Materials: Cast or ductile iron body; stainlesssteel float. c. Pressure Rating: 150 psi.
d. Manufacturers: Apco Series 200; equivalent by Valmatic; or equal.
2. Combination Air Valves (CAV)
a. Function: Exhausts large volumes of air during pipeline filling, releases accumulated air under pressure and allows air back in when pipeline pressure drops below atmospheric pressure.
b. Features
1) Provide an anti-slam, poppet-type valve disc that allows air to pass but provides a regulated closure during passage of water. 2) Low seating pressure.
c. Materials: Cast or ductile iron body; stainlesssteel float. d. Pressure Rating: 150 psi.
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e. Manufacturers: Apco Series 140C or 150C; equivalent by Valmatic; or equal.
3. Air/Vacuum Valve
a. Function: Allows large volume of air to be exhausted from pipeline as it is filled or admitted into pipeline as it is drained.
b. Features
1) Provide an anti-slam, poppet-type valve disc that allows air to pass but provides a regulated closure during passage of water. 2) Low seating pressure.
c. Materials: Cast or ductile iron body; stainlesssteel float. d. Pressure Rating: 150 psi.
e. Manufacturers: Apco 141DAT through 146DAT; equivalent by Valmatic; or equal.
B. Ball Valves (up to 4-inch on metal piping)
1. Type: Standard port with lever operator.
2. Connections: Threaded.
3. Materials: Bronze body ASTM B584 Alloy 83600 or 84400, chrome-plated ball, teflon seats.
4. Manufacturers: Apollo 70-100; Watts B-6000; or equal.
C. Butterfly Valves
1. Type: Short body flanged, except wafer body where specified elsewhere orshown on the Drawings as wafer.
2. Materials
a. Body: Cast Iron; ASTM A126, Class B, or ASTM A48, Class 40. b. Disk: Cast or ductile iron with Ni-Chrome or Type 316 stainlesssteel edge. c. Valve Shaft: Type 304 or Type 316 stainless steel.
d. Seats: Buna-N.
3. Construction
a. Seats: Applied to body. Cartridge type seats with retaining rings are not acceptable.
b. Disk to Shaft Connection: Stainless steel pins or torque plug. c. Valve Diameter Limitation: Internal diameter of valve at the throat shall be no less than the nominal diameter of the valve less 1-½ inches.
4. Finish
a. Exposed Exterior: Shop prime compatible with field applied finish coats.
Refer to Section 09960.
b. Buried Exterior: Shop coat with high-solids epoxy, 12 mils minimum. c. Interior: Shop line with two-component, high solids epoxy, AWWA C550.
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5. Actuators
a. Manual
1) Provide valve position indicators on all actuators.
2) Type: Traveling nut, self-locking. Designed to hold valve in any intermediate position between fully open and fully closed without creeping or fluttering
3) Buried: Designed for buried service, watertight up to 10 psi.
Provide 2-inch-square standard AWWA operating nut, with extension stem to reach the ground surface as shown on the Drawings, and with a ground level position indicator.
b. Pneumatic
1) Factory sealed and lubricated for life.
2) Minimum design life: Two million operations
3) Operatingmedium: Compressed air
4) Operating air pressure: 80 psi
5) Provide minimum two-days start up services.
6) Provide adapters as needed to connect actuators to butterfly valves.
6. Testing: Test in accordance with AWWA C504, except that leakage test shall be in both directions.
7. Manufacturers: Pratt; DeZurik; or equal.
D. Gate Valves
1. Through 2-inch
a. Type: Rising stem, screw in bonnet, solid wedge disc, handwheel operated.
b. Pressure Rating: 200 psi WOG.
c. Connections: Threaded.
d. Materials: All bronze, UNS 83600, ASTM B62, B505 or B584. e. Manufacturers: Crane No. 428; equivalent by Jenkins; or equal.
E. Pressure Sustaining/Reducing Valve
1. Type: Hydraulic pilot controlled, globe style for sustaining upstream pressure while reducing downstream pressure.
2. Connections: Flanged, 150-pound ANSI.
3. Materials: Ductile iron body with fusion epoxy lining; stainless steel and/or bronze trim; Buna-N elastomers.
4. Rating: 175 psi.
5. Manufacturers: Cla-Val; Singer; or equal.
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F. Pressure Sustaining/Reducing & Solenoid Valve
1. Type: Hydraulic pilot controlled, globe style for sustaining upstream pressure while reducing downstream pressure with solenoid override to close valve.
2. Connections: Flanged, 150-pound ANSI.
3. Materials: Ductile iron body with fusion epoxy lining; stainless steel and/or bronze trim; Buna-N elastomers.
4. Rating: 175 psi.
5. Manufacturers: Cla-Val; Singer; or equal.
G. Swing Check Valves
1. Pressure Rating: 250 psi.
2. Type: Resilient seated check valve, AWWA C508.
3. Connections: Flanged, 125-pound ANSI.
4. Materials: Ductile iron body, bonnet, and disc.
5. Manufacturers: American Flow Control Series 2100; or equal.
H. Refer to Section 15400 for building plumbing system valves and fixtures.
2.04 SYSTEM B – DRAINAGE, WASTEWATER
A. Plug Valves
1. Type: Resilient faced eccentric plug.
2. Pressure Rating: 150 psi.
3. Connections: Flanged, 125-pound ANSI, except threaded connections may be used for 2-inch valves.
4. Materials: Cast iron body, welded nickel seat, NBR or Buna-N coated plug, NBR or Buna-N packing or U-cup stem seal. Valves shall have interior and exterior metal surfaces other than the plug and valve seat coated with two coats of high-solids epoxy with total dry film thickness 12 mils minimum.
5. Actuators: Lever operated 4-inch and smaller; worm geared handwheel operated 6-inch and larger. Valves shall provide driptight shutoff in both directions.
6. Manufacturers: DeZurik PEC; Milliken Eccentric; Clow EPV; or equal.
7. Installation: Unless otherwise necessary for proper installation or permitted by Engineer, all eccentric plug valves shall be installed with shaft horizontal and with plug in upper half of body. Valves in sewage lines shall be installed with seat on upstream end.
2.05 SYSTEM C – CHEMICALS, SAMPLE WATER
A. Ball Valves
1. Rating: 150 psi at 75°F.
2. Type: Double union. For sodium hypochlorite service, provide vented ball valve with permanent vent/flow directional marking.
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3. Connections: Socket.
4. Materials: PVC body, teflon seats and EPDM O-ring seals, except Viton O-ring seals with solidum hypochlorite solution.
5. Manufacturers: Asahi/America, or equal.
B. Check Valves
1. Rating: 150 psi at 75°F.
2. Type: Ball for horizontal or vertical service.
3. Connections: Union ends for socket weld.
4. Materials: PVC body, VitonO-ring seals and seats except provide EPDM for caustic service.
5. Manufacturers: Chemtrol True Union BC, Plastiline No. 8611, or equal.
C. Foot Valves
1. Provide foot valve that consists of a check valve and strainer on chemical suction lines within solution tanks. The foot valve shall prevent loss of prime and filter out particulates from the chemical. Provide a ceramic weight to keep foot valve assembly at the bottom of the tank.
2. Materials: PVDF body; Viton seals.
3. Manufacturers: Blue-White Industries; or equal.
D. Rotameters
1. The metering scale shall be a nominal 250 mm in length with GPM graduations.
2. Meters shall have a minimum rangeability of 10:1. Accuracy shall be ±2% of full scale for flow rates in the upper 90% of the maximum flow range specified.
3. The tube shall be readily field removable for cleaning.
4. Materials: Provide Type 316 stainless steel housing or frame and a calibrated borosilicate glass metering tube with float. The float shall be of a material and shape suitable for the process fluid. All other wetted parts shall be Type 316 stainless steel, except O-rings shall be Teflon unless otherwise recommended by the manufacturer for the process fluid specified.
5. Connections: End fittings shall be chosen to suit the process fluid and the installation requirements in the field.
6. Manufacture: Brooks Instrument; SK Instrument; Wallace & Tiernan; Fischer & Porter; or equal.
E. Refer to Section 11380 for strainers, pulsation dampeners, pressure relief valves, back pressure valves, calibration cylinders, and chemical injection assemblies.
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2.06 APPURTENANCES
A. Pressure Gauge:
1. 4-1/2-inch size, range as specified, stainless steel case, liquid filled, safety glass, weather proof, bronze tube and brass socket, industrial grade stainless steel movement with brass hairspring, 1.5% accuracy, and 1/2-inchNPT lower connection.
2. Supply with 1/2-inch brass gauge cock.
3. For pressure gauges on chemicalsystems, provide a diaphragm seal.
4. The diaphragm seal and isolation valve materials shall be chemically compatible with the solution of exposure.
PART 3 - EXECUTION
3.01 INSTALLATION
A. Valvesshall be installed in accordance with the manufacturer’srecommendations.
B. Install butterfly valves in accordance with AWWA C504, Appendix A, Sections A.2 through A.5, inclusive.
C. Valves installed in vertical runs of pipe shall have their operating stems oriented to facilitate the most practicable operation, as approved by the Engineer.
D. Install valves and accessories such that all parts are easily accessible for maintenance and operation. Provide valve boxes for buried valves.
E. Where valve handwheels are shown on the Drawings, valve orientation shall be asshown.
Where valve handwheels are not shown, orient valves to permit easy access to the handwheels or handles and to avoid interferences.
F. Provide a union adjacent to each screwed end valve and accessory with additional unions as necessary to facilitate removal.
G. Where valves or other pipeline items require metal full-face connecting flanges, provide intermediate flanges if the connecting flange is not adequate.
H. Connections between ferrous and non-ferrous valves, accessories, or pipe supports shall be made using a dielectric coupling, union, or flange. See Section 15050.
3.02 VALVE IDENTIFICATION
A. Identify all buried and exposed valves with tags. See Section 15076.
3.03 TESTING
A. Valves shall be tested at the same time that the adjacent pipeline is tested. Joints shall show no visible leakage under test. Joints that show signs of leakage shall be repaired prior to final acceptance.
B. If there are any special parts of control systems or operators that might be damaged by the pipeline test, they shall be properly protected.
C. The Contractor shall be responsible for repairing or replacing any items damaged by the testing at no additional cost to the City.
END OF SECTION
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Building and Plumbing Fixtures
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SECTION 15400
BUILDING AND PLUMBING FIXTURES
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Furnish, install, and test all building service piping and plumbing fixtures.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section
1. Section 01330 – Submittals
2. Section 01611 – Seismic Design Requirements
3. Section 02300 – Earthwork
4. Section 10200 – Safety and Signage
5. Section 11500 – Disinfection
6. Section 12350 – Laboratory Casework
7. Section 15050 – Piping Systems
8. Section 15076 – Piping and Valve Identification
9. Section 15110 – Valves and Accessories
10. Section 15951 – Testing Gravity Flow Pipelines
11. Section 15996 – Testing Pressure Piping
1.03 REFERENCES
A. ANSI – American National Standard Specifications
B. FCCCHR – Foundation for Cross-Connection Control and Hydraulic Research
1.04 SUBMITTALS
A. Comply with Section 01330.
B. Submit the following items:
1. Building piping layout drawings and details.
2. Manufacturer’s catalog information and description for items proposed for use.
3. Manufacturer’s installation, operation, and maintenance manuals/bulletins and spare parts list where applicable.
1.05 QUALITY ASSURANCE
A. Codes:
1. Comply with the latest edition of the California Plumbing, and rules and regulations of authorities having jurisdiction over the work specified herein.
2. Fixtures: Provide and install in accordance with the California Plumbing Code, latest edition.
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B. Permits and inspections shall be in accordance with General Conditions.
C. The Drawingsshall be taken in a sense as diagrammatic. Size of pipes and general method of running them are shown, but it is not intended to show every offset and fitting nor every structural difficulty that may be encountered.
1.06 SEISMIC PROTECTION
A. Provide equipment and piping with seismic protection as specified and as recommended by “Guidelines for Seismic Restraints of Mechanical Systems and Plumbing Piping System,” latest edition by SMACNA. Seismic restraints shall be designed in accordance with the seismic design requirements in Section 01611.
PART 2 - PRODUCTS
2.01 PLUMBING FIXTURES AND ACCESSORIES
A. Lab Sink and Accessories: See Section 12350.
B. Emergency Eyewash and Shower Combination Unit
1. Comply with ANSI Z358.1.
2. Unit shall be designed for corrosive duty and provide a means of controlled flow to both eyes.
3. Unit shall be constructed of Schedule 40 galvanized steel and identified with a highly visible sign.
4. Eyewash
a. The eyewash shall be 36-42 inches from the floor.
b. The eyewash shall deliver a minimum of 0.4 gpm for 15 minutes.
5. Shower
a. The shower head shall be 82-92 inches above the floorsurface. b. Shower head shall deliver a minimum of 20 gpm and provide a column of water 20-inches wide at 60 inches above the floor.
6. Unit components shall be capable of operating simultaneously and shall be positioned so that components may be used simultaneously by the same user.
7. Valve shall be designed so that the flow remains on without the use of the operator’s hands. The valve shall be simple to use and go from on to off in one second or less.
8. Outletsshall be protected from airborne contaminates. Provide dust cover.
9. Manufacturer: Haws 8300/8309; Guardian Equipment 1902 BC; or equal.
2.02 PIPING, FITTINGS, VALVES, AND ACCESSORIES
A. Water System (PW)
1. Pipe and Fittings: See Section 15050.
2. Water Hammer Arrestors: Zurn Z-1700, Wade “Shokstop” W-10; or equal.
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3. Backflow Preventers
a. All backflow preventers shall be approved by the FCCCHR. b. Type: Straight configuration with shutoff valve and test cock, unless shown otherwise on the Drawings.
c. Pressure Rating: 175 psi.
d. Temperature Rating: 32°F to 140°F.
e. Connections: Threaded for 2½-inch and smaller. Flanged for 3-inch and larger.
f. Products:
1) Reduced Pressure Backflow Preventers (Process/ Irrigatior Connections 2-1/2 inch and smaller) (RPBP): Watts Series 909; Febco 825Y, or equal.
2) Reduced Pressure Backflow Preventers (Process Connections 3 inch and larger) (RPBP): Watts Series 909; Febco 825YD, or equal. 3) Dual-Check with Atmosphere Vent (Hot Water Heating Systems):
Watts Series 9DM2; Wilkins Model 760.
4) Double Check Backflow Preventer w/ Detector Check (Firelines):
Watts Series 709DCDA; Febco 806YD, or equal.
4. Hose Valve
a. Type: Class 125 angle valve equipped with hose nipple. b. Materials: Bronze body, seat, and disc.
c. Size: 1-inch, unless indicated otherwise on Drawings. d. Connection: Double male ends, NPT by straight hose thread. e. Manufacturer: Crane; American Standard; or equal.
f. Accessories
1) Fittings: Provide bronze reducer for connection to 3/4-inch hose. 2) Hose: Provide three 75-foot lengths of 3/4-inch hose. Hose shall be seamless EPDM rubber reinforced with textile cord to provide kink resistance, designed for a working pressure of at least 200 psi. Provide hose with threaded brass fittings.
3) Hose Rack: See Hose Rack Details on Drawings.
4) Warning Sign: Attach a warning sign “NON-POTABLE WATER. DO NOT DRINK” at each hose bibb. See Section 10200.
5. Wharf Hydrant
a. Type: Angle valve with handwheel.
b. Rated Pressure: 300 psi.
c. Connection: 1.5-inch male outlet with standard hose threads by1.5-inch IPT female inlet.
d. Materials: Brass.
e. Manufacturers: Potter-Roemer 4060; or equal.
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f. Accessories:
1) Provide cap with corrosion resistant chain.
2) Provide spanner fir 1.5-inch pin lug coupling.
3) Provide 1.5-inch hose in 50-foot length with brass pin lug expansion ring couplings having standard hose threads.
6. Mop Sink
a. Sink: 24-inch x 24-inch x 12-inch Terrazo sink with back flange. Drain body shall be brass with non-caulked outlet, cast integral to the sink body.
Florestone Model 20; or equal.
b. Hose Valve: Provide a wall mounted hose valve above sink. c. Strainer: Chrome-plated strainer. American Standard 7721.038; Kohler K9146; or equal.
B. Sanitary Drain, Waste, and Vent Piping (D, SS)
1. Pipe and Fittings: See Section 15050.
2. Floor Drains and Traps: Cast iron drains having inside caulk or push-on compression type neoprene gasket joints.
a. FD-1 (For Finished Floors): Zurn Z-415-6B; Wade W-1104-AX6; or equal, complete with primer connection.
b. FD-3 (Funnel Drain): Zurn Z-328, or equal. Funnel drain shall be formed by stubbing bell end of spigot drainage pipe ½-inch above floor level. c. FD-4 (Floor/Funnel Drain) Zurn Z-415-E, Wade W-1100-EF4; or equal. d. FD-6 (Floor Drain): Zurn Z520, Wade W-1340; or equal. e. Traps: Provide traps for all floor drain unless noted otherwise. Trap assembly shall include primer and vent connections as required. Zurn Z1000, Wade, or equal.
3. Floor Cleanouts: Zurn Z-1400; Wade W-6000; or equal. Provide scoriated top.
4. Wall Cleanouts: Zurn Z-1441; Wade W-8450-R; or equal.
5. Cleanout Caps
a. Cleanout caps shall be elastomeric plastic, resistant to sewage and grease, chemicals, and normal sewer gases.
b. Caps shall be designed to slip over cleanout/cleanout extension with a snug fit.
c. Cap shall be held in place with a stainless steel band clamp. d. Caps shall meet requirements of the Uniform Plumbing Code. e. Manufacturers: Fernco; Indiana Seal; or equal.
6. Cleanout Box
a. Provide precast, reinforced concrete cleanout boxes at cleanout installations.
b. Manufacturers: Christy V1BOX w/F8D lid; Brooks; or equal.
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PART 3 - EXECUTION
3.01 INSTALLATION
A. Install escutcheons secured to pipe with set-screw where pipes or tubing pass through exposed walls or ceilings.
B. Provide all fixtures with traps and vents unless otherwise indicated on the Drawings.
C. Vent flashing at roof, unless otherwise shown on the Architectural Drawings, shall be a 4 lb lead sheet extending from a 4-inch (minimum) skirt at roof line, up to the open end of vent. At the open end of vent, the lead sheet shall be turned down into the vent opening.
D. Unless indicated otherwise, all soil, waste and drain piping shall be sloped not less than 1/4-inch per foot downward in the direction of flow.
E. Provide unions or flanges where equipment is installed in piping. Also provide dielectric unions or couplings at points of connection of ferrous to non-ferrous metal piping.
F. Provide a shutoff stop valve in the branch of every water, or air pipe service upstream of every fixture or outlet.
G. Furnish and install all supports, bracing, and blocking required for the proper installation of the plumbing work specified herein.
H. Install water hammer arrestorsto protect each plumbing fixture or battery of fixtures.
I. Place or erect all piping to accurate line and grade and backfill, support, hang, or brace against movement as specified or shown on the Drawings, or as required for proper installation. Remove all dirt and foreign matter from the pipe interior prior to installation and thoroughly clean all joints before joining.
J. Use reducing fittings where any change in pipe size occurs. Do not use bushings unless specifically noted on the Drawings. Use eccentric reducing fittings wherever necessary to provide free drainage of lines.
K. Provide valves wherever equipment drain connections are furnished and carry the discharge pipe to the nearest floor drain, drain trench or sump. Where no receptacle for drain exists, install drain piping to two pipe diameters or 2-inch, minimum above the drain rim. Drain piping and valve materials shall conform to the requirements of the system served.
3.02 CLEANING
A. Prior to testing, thoroughly clean the inside of each completed piping system of all dirt, loose scale, sand and other foreign material.
B. Cleaning shall be by sweeping, flushing with water or blowing with compressed air or oilfree nitrogen gas, as appropriate for the size and type of pipe. Flushing shall achieve a velocity of at least 3 feet per second.
C. The Contractor shall install temporary strainers, temporarily disconnect equipment, or take other appropriate measures to protect equipment while cleaning piping.
3.03 TESTING
A. Testsystems and arrange for inspection by the proper authorities.
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B. Water Piping: See Section 15996.
C. Waste, Drain, and Vent Piping
1. See Section 15951.
2. Test waste, drain, and vent piping in accordance with the latest edition of the California Plumbing Code with local amendments.
3. Storm drain (rainwater) piping shall be tested similar to waste, drain, and vent piping.
3.04 DISINFECTION OF WATER SYSTEM PIPING
A. Clean and disinfect water system piping. See Section 11500.
3.05 PIPE AND VALVE IDENTIFICATION
A. See Section 15076.
END OF SECTION
PASE – December 2024
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15736 - 1
Self-Contained Air-Conditioning Units
City of Milpitas
WellUpgrades Program
McCandless Well Facility
WSECTION 15736
SELF-CONTAINED AIR-CONDITIONING UNITS
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Packaged wall-mounted air-conditioning units with refrigerant compressors, air-cooled condensers, and controls.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section
1. Section 01330 – Submittals
2. Section 01782 – Operation and Maintenance Information
3. Section 01999 – Reference Forms
1.03 SUBMITTALS
A. Comply with Section 01330.
B. Product Data: Include rated capacities, furnished specialties, and accessoriesfor each unit indicated.
C. Wiring Diagrams: Power, signal, and control wiring.
D. Operation and maintenance data. Comply with Section 01782.
E. Completed Manufacturer’s Installation Certification Form for each piece of equipment (Section 01999).
1.04 QUALITY ASSURANCE
A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.
1.05 WARRANTY
A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace self-contained air-conditioning units that fail in materials and workmanship within five years from date of Substantial Completion.
PART 2 - PRODUCTS
2.01 MANUFACTURERS AND MODELS
A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:
1. Frigidaire, Carrier, Mitsubishi, or Daikin.
B. Acceptable Models: Subject to compliance with requirements, provide one of the following products:
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1. Frigidaire Model FFWW184WE2.
2. Equivalent product by Carrier, Mitsubishi, or Daikin.
2.02 PACKAGED UNITS
A. Description: Self-contained, factory-assembled and -wired unit; consisting of cabinet, compressor, fan, evaporator coil, air filters, and controls; and fully charged with refrigerant and oil; with integral air cooled condenser.
B. Disconnect Switch: Factory mounted on equipment.
C. Cabinet Frame and Panels: Structural-steel frame with galvanized steel panels with bakedenamel finish in color selected by City, and with access doors or panels.
1. Insulation: Minimum 1/2-inch- (13-mm) thick, acoustic duct liner on cabinet interior and control panel.
2. Discharge Plenum: Cabinet extension with directional louvers.
3. Corrosion-Resistant Treatment: Phenolic coating on unit interior and exterior.
D. Evaporator Fan: Galvanized steel, double-width, double-inlet, forward-curved centrifugal fan; statically and dynamically balanced.
1. Drive: Direct, with fan and motor resiliently mounted.
2. Fan Sheaves: Cast-iron or steel sheaves, dynamically balanced, bored to fitshafts and keyed.
3. Motor Sheave: Variable and adjustable pitch selected so required rpm are obtained when set at midposition.
4. Motors: Multispeed.
E. Compressor: Hermetically sealed, 3600 rpm maximum, and resiliently mounted with positive lubrication and internal motor protection.
F. Evaporator Coil: Direct-expansion coil with seamless copper tubes expanded into aluminum fins. Provide separate circuit for each compressor, with externally equalized thermal-expansion valve, filter-dryer, and charging valves.
G. Air Cooled Condenser.
H. Permanent Filters: 1-inch- (25-mm) thick, cleanable panel filters.
I. Control Package: Factory wired, including contactor, high- and low-pressure cutouts, internal-winding thermostat for compressor, control-circuit transformer, and noncycling reset relay.
1. Time-Delay Relay: Five-minute delay to prevent compressor cycling.
2. Adjustable Thermostat: Unit mounted to control the following:
a. Supply fan.
b. Compressor.
3. System Selector Switch: Off- auto-cool
4. Fan Control Switch: Auto-on.
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McCandless Well Facility
J. Ventilation Options:
1. Barometric Outside-Air Damper: Adjustable-blade damper allowing induction of up to 15 percent outside air when evaporator fan is running.
PART 3 - EXECUTION
3.01 INSTALLATION
A. Anchor units to structure.
B. Isolation: Mount cabinet on rubber-in-shear pads all around for mounting inside the opening.
3.02 FIELD QUALITY CONTROL
A. Installation Inspection: Engage a factory-authorized service representative to inspect field-assembled components and equipment installation.
B. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation. Remove malfunctioning units, replace with new components, and retest at no additional cost to the City.
C. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment at no additional cost to the City.
END OF SECTION
PASE – December 2024
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Self-Contained Air-Conditioning Units
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Ventilation Equipment
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 15805
VENTILATIONEQUIPMENT
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Work necessary to furnish and install ventilation equipment as shown on the drawings and as specified herein
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section:
1. Section 01330 – Submittals
2. Section 01999 – Reference Forms
1.03 SUBMITTALS
A. Submittals shall demonstrate full compliance with all aspects of this specification. Submit manufacturer's technical data and application instructions in accordance with Section 01330.
B. Submit completed Manufacturer’s Installation Certification Form for each piece of equipment (Section 01999).
1.04 CODES, ORDINANCES, AND PERMITS
A. All work shall be installed in accordance with the laws, ordinances, rules, and regulations of all local and State authorities having jurisdiction, and the rules and regulations of the National Board of Fire Underwriters, whether shown on the drawings or not. Electrical components shall be UL listed and labeled.
PART 2 - PRODUCTS
2.01 WALL MOUNTED EXHAUST FAN
A. Wall mounted exhaust fan shall be 115 V, single phase, direct motor driven, unless otherwise shown, and shall be supported on metal frames for mounting, with safety guards.
B. Wall openings shall be of sufficient size for the fan capacity.
C. Exhaust fansshall be Greenheck Model CUE-099-VG/A wall-mounted direct drive exhaust fan or equal and shall deliver not lessthan 1,200 cfm at 0.05 inchesstatic pressure (W.G.).
D. All Exhaust fans shall be complete with all necessary appurtenances for installation in a masonry wall.
2.02 ELECTRICAL AND CONTROLS
A. Wall mounted exhaust fan shall be controlled as shown on the contract drawings.
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PART 3 - EXECUTION
3.01 GENERAL
A. Install ventilation equipment in accordance with equipment manufacturer's installation instructions, and with recognized industry practices, to ensure the equipment complies with requirements and serves the intended purpose.
END OF SECTION
West Yost – December 2024
270-30-23-22
15951 - 1
Testing Gravity Flow Pipelines
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 15951
TESTING GRAVITY FLOW PIPELINES
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Acceptance testing ofsanitary sewer and storm drain pipelines:
1. Visual inspection of pipes.
2. Leakage testing of pipes.
3. Leakage testing of manholes.
1.02 REFERENCED SECTIONS
A. The following Section is referenced in this Section
1. Section 01330 – Submittals
2. Section 01560 – Environmental Controls
3. Section 01999 – Reference Forms
1.03 SUBMITTALS
A. Comply with Section 01330.
B. Testing Plan and Schedule: Submit a written plan that identifies the testing methods and schedule. The testing plan shall include description of testing procedures, equipment, and method for water procurement, conveyance, and disposal.
C. Notification of Testing: Submit advance written notice of testing activities a minimum of 48 hours prior to conducting piping tests.
D. Submit test reports for each test on each segment of pipeline.
E. Completed Pipe Test Record Forms, found in Section 01999.
1.04 TESTING REQUIREMENTS
A. Provide labor, equipment, tools, test plugs, risers, air compressor, air hose, pressure gauges and other devices necessary for proper inspection and testing of pipelines.
B. Perform leakage testing to verify compliance with the maximum allowable leakage criteria specified in this Section. Refer to tables in this Section for leakage criteria.
C. Coordinate testing schedules with Engineer. Perform testing under observation of Engineer.
D. Test pressures shall account for ground water elevation.
E. Perform testing after placing and compacting Bedding Material around the pipe, or after backfilling the pipe trench, at Contractor’s option. Schedule testing so that no more than 1,000 lineal feet of installed gravity flow piping remains untested at any one time.
F. Repair or replace sections of pipelines and manholes that fail to meet the specified requirements and retest until the leakage criteria is satisfied at no additional cost to the City.
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City of Milpitas
WellUpgrades Program
McCandless Well Facility
PART 2 - PRODUCTS (NOT USED)
PART 3 - EXECUTION
3.01 VISUAL INSPECTION OF PIPES
A. Confirm pipe alignment visually by flashing a light between manholes. Verify if alignment is true and no pipes are misplaced. In case of misalignment or damaged pipe, remove and re-lay or replace pipe segment.
3.02 LEAKAGE TESTING OF PIPES
A. Compensating for Ground Water Pressure:
1. When Contractor electsto test pipe after backfilling the pipe trench, groundwater pressuremust be taken into accountto eliminate itsinfluence on the leakage test.
2. Determine groundwater elevation asfollows:
a. Install a 1/2-inch diameter pipe nipple, approximately 10” long, through the wall of each manhole. Cap the end of the pipe nipple that protrudes into the manhole. Locate pipe nipple at the crown of the new gravity pipeline where the pipeline enters the manhole. Install pipe nipple at the same time the gravity pipeline is constructed.
b. Before performing pipeline leakage acceptance test, remove the cap from the pipe nipple and clear the pipe nipple with air pressure. Connect a clear plastic tube to the nipple, run the tube vertically inside the manhole and allow groundwater to rise in the tube.
c. After groundwater stops rising, measure the height in feet of water over invert of the pipe.
B. Test Options: Gravity flow pipelines may be tested by either hydrostatic means or by low pressure air testing.
1. Hydrostatic Leakage Test
a. Determine groundwater elevation.
b. Plug wyes, tees, stubouts, laterals and other connections to the sewer.
Plug sewer pipeline in the downstream manhole. If necessary, to isolate flow, plug incoming pipes in the upstream manhole.
c. When test pressures require installation of a riser pipe, connect riser pipe to pipe in the upstream manhole.
d. Fill sewer pipe and manholes with water to the specified test elevation, compensating for the measured groundwater elevation.
e. Conduct leakage test for a duration of 2 hours. After 2 hours, take water level reading to determine drop of water level and calculate water loss or measure the quantity of water required to restore water to the specified elevation. Total loss of water shall not exceed that calculated from allowable leakage criteria.
f. Allowable Leakage Criteria: Maximum allowable leakage equivalent to 200 gallons per day per inch of inside diameter per mile of pipeline under test.
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2. Low Pressure Air Testing
a. Conduct air pressure testing in accordance with ASTM C924. b. Pressurize the pipe section to be tested to 4.0 pounds per square inch and hold this pressure for 5 minutes. After this time period, allow pressure to drop.
c. When internal air pressure reaches 3.5 pounds per square inch, begin measuring rate of air pressure loss. Record the time interval required for the internal air pressure to drop from 3.5 psi to 2.5 psi. d. Acceptance Criteria: The pipeline under test is acceptable when the time interval so recorded exceeds the minimum test time given by the following table:
MINIMUM Time Allowed for
Pressure Loss from 3.5 psig to 2.5 psig:
Nominal Pipe Diameter, Inches
Minimum Time Allowed per
100 Lineal Feet of Pipe Under Test,
Minutes
6 0.7
8 1.2
10 1.5
12 1.8
15 2.1
18 2.4
21 3.0
24 3.8
e. Any section of pipe which fails to meet requirements shall be repaired and retested.
3.03 LEAKAGE TESTING OF MANHOLES
A. After completion of manhole construction, wall sealing, or rehabilitation, test manholes for water tightness using hydrostatic or vacuum testing procedures. Conduct test prior to backfilling.
B. Plug influent and effluent lines connected to manhole with suitably-sized pneumatic or mechanical plugs.
1. Utilize plugs that are properly rated for pressures required for test.
2. Place plugs a minimum of 6 inches outside of manhole walls.
3. When pipes connected to the manhole have not been backfilled, brace pipes to prevent dislodging from the manhole.
C. Vacuum Testing:
1. Install vacuum tester head assembly at top access point of manhole and adjust for proper seal on straight top section of manhole structure. Following
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manufacturer’s instructions and safety precautions, inflate sealing element to the recommended maximum inflation pressure; do not over-inflate.
2. Evacuate manhole with vacuum pump to 10” mercury (Hg), disconnect pump, and monitor vacuum for the time period specified in the following table.
Depth in Feet
Time in Seconds by Manhole Diameter
48-inch 60-inch 72-inch
4 10 13 16
8 20 36 32
12 30 39 48
16 40 52 64
20 50 65 80
24 60 78 96
(a) 5 6.5 8.0
(a) Add times for each additional 2-feet of manhole depth. (The values listed above have been extrapolated from ASTM C924-85).
3. If the drop in vacuum exceeds 1” Hg over the specified time period tabulated above, locate leaks, complete repairs necessary to seal manhole and repeat test procedure until satisfactory results are obtained.
D. Hydrostatic testing:
1. Fill manhole with water to top of frame. Add water over a 24-hour period to compensate for absorption and evaporation losses. After 24 hours, refill to top of frame and observe for loss of water. If, after a 4-hour period the water level is reduced by more than 1/4”, the leakage shall be considered excessive. Contractor shall make necessary repairs and retest the manhole at no additional cost to the City.
2. If water loss exceeds amount tabulated above, locate leaks, complete repairs necessary to seal manhole and repeat test until satisfactory results are obtained at no additional cost to the City.
3.04 WATER DISPOSAL
A. Dispose of water use for testing in accordance with the requirements in Section 01560.
END OF SECTION
West Yost – December 2024
270-30-23-22
15996 - 1
Testing Pressure Piping
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 15996
TESTING PRESSURE PIPING
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Hydrostatic testing of pressure pipelines.
1.02 REFERENCED SECTIONS
A. The following Sections are referenced in this Section:
1. Section 01330 – Submittals
2. Section 01500 – Construction Facilities and Utilities
3. Section 01560 – Environmental Controls
4. Section 01999 – Reference Forms
1.03 SUBMITTALS
A. Comply with Section 01330.
B. Testing Plan and Schedule: Submit a written plan that identifies the testing methods and schedule. The testing plan shall include description of method for water procurement, conveyance, and disposal.
C. Notification of Testing: Submit advance written notice of testing activities a minimum of 48 hours prior to conducting piping tests.
D. Submit test reports for each test on each segment of pipeline.
E. Completed Pipe Test Record Forms, found in Section 01999.
1.04 TESTING REQUIREMENTS
A. Furnish personnel, materials, bulkheads, test plugs, restraints, anchors, temporary connections, pumps, pressure gauges and other equipment needed to perform testing.
B. Water for Testing
1. Use potable water for pressure testing pipelines. Obtain water from the source identified in Section 01500.
2. Disposal: Dispose of water used for testing pipelines in accordance with the requirements in Section 01560.
C. Test only those portions of the pipe that have been installed as part of this Contract.
1. Test new pipe sections prior to making final connection to existing piping.
2. Install test plugs or bulkheads to isolate new piping systems.
3. Unless otherwise indicated, valves may not be used to isolate portions of the piping system for purposes of testing. When testing against a valve isindicated or approved by the City, provide a test plate “pancake” to furtherisolate the new and existing piping.
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D. Sequence
1. Buried Pressure Piping: Except as otherwise indicated, conduct piping pressure test after trench has been backfilled to subgrade and compacted. Piping may be tested before or after final paving, at Contractor’s option.
2. Encased Piping: Test before encasing pipe in concrete.
E. Failed Tests: Make necessary corrections or remove defective pipe or defective appurtenances. Repeat pressure test until a successful test is achieved.
PART 2 - PRODUCTS (NOT USED)
PART 3 - EXECUTION
3.01 GENERAL
A. Test pipelines, appurtenances, valves, and fittings in the pipeline system.
B. Where allowable leakage rates are not specifically indicated, no leakage is allowed.
C. Perform testing operations at the time agreed upon with and in the presence of the Engineer.
D. Prior to pressure testing, clean pipeline of debris, construction materials, dirt and other foreign material within the piping system.
E. Do not test pipelines until thrust restraint devices have been installed.
1. Where concrete thrust blocks are used, do not begin pressure test until concrete has attained an age of at least 7 days unless otherwise approved by the City.
2. All supports, anchors, and blocks on exposed pipe shall be installed prior to the leakage test. No temporary supports or blocking shall be installed for the final test.
F. Measure test pressure at the highest point on the pipeline, except that the pressure at the lowest point shall not exceed the pipe manufacturer’s rated test pressure, unless specifically noted otherwise.
G. After testing has been completed, drain test water from pipelines and leave in clean condition. If a gas pipeline is tested with water, the water shall be drained and blown dry with oil-free air or nitrogen gas.
3.02 TESTING WITH WATER
A. Place temporary bulkheadsin the pipe at the ends of the test section, and then slowly fill the pipeline with water at a rate which does not cause surges or exceed the rate at which the air can be released through the air valves.
B. Ascertain that test bulkheads are suitably restrained to resist the thrust of the test pressure without damage to, or movement of, the adjacent pipe.
C. Purge air within the pipeline during the filling operation. Check proper operation of air release valves and air vents during the filling operation to ascertain proper operation and venting of air from the pipeline.
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D. Concrete pipe, cement-mortar lined pipe and other pipe made from water absorbing material:
1. After the filling operation is complete, allow the filled pipeline to stand under a slight pressure for at least 24 hours to allow air to escape from any air pockets within the pipeline and the pipe lining to absorb water.
2. Examine bulkheads, valves and connections for leaks during this period. If leaks are found, make corrections before conducting the pressure test.
3.03 TESTING WITH AIR
A. Pipe testing with air or another gas shall show no reduction of pressure during the test period after corrections have been made for changesin temperature in conformance with the following relationship:
P1 = P2
T1 T2
Where,
P1 and P2 are the absolute pressures of the gas in the pipe.
T1 and T2 are the absolute temperatures of the gas in the pipe.
Subscript “1” denotes starting condition and subscript “2” denotes final conditions.
B. Take special precautions to protect personnel when using air or gas as the test medium.
During initial pressurization of a pipeline to the specified test pressure, personnel shall be protected by suitable barricades or shall move to locations that can provide suitable protection, such as behind a nearby concrete structure.
3.04 PRESSURE TESTING EXPOSED PIPING
A. Test exposed piping as follows:
1. Fill section of piping under test with water and raise the system pressure to the test pressure specified in Paragraph 3.06.
2. Visually inspect exposed pipe joints, joints at fittings, valves, hydrants, and other piping appurtenances for leaks.
3. Correct leakage as necessary to eliminate the leakage.
4. Duration of Pressure Test: As specified in Paragraph 3.06 for the pipe type.
5. Leakage Allowances: Asspecified in Paragraph 3.06 for the pipe type.
6. Correct any visible leakage by tightening flanges and screwed joints, replacing gaskets or removing defective materials.
7. Repeat test until no leakage is observed.
8. Record results of pressure test on Pipe Test Record form included in Section 01999.
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3.05 PRESSURE TESTING BURIED PIPING
A. Pressure test buried piping as follows:
1. Fill section of piping under test with water and raise the system pressure to the test pressure specified in Paragraph 3.06.
2. Visually inspect exposed pipe joints, joints at fittings, valves, hydrants, and other piping appurtenances for leaks.
3. Correct visible leaks necessary to eliminate the leakage.
4. Duration of Pressure Test: As specified in Paragraph 3.06 for the pipe type.
5. Leakage Allowances: Asspecified in Paragraph 3.06 for the pipe type.
6. Leakage Measurement:
a. Begin test once visible leaks have been eliminated.
b. Maintain test pressure during the test period by adding makeup water to a calibrated test reservoir.
c. Accurately measure the volume of makeup water introduced into the pipeline to maintain the test pressure to determine the leakage rate for the test.
7. Repeat test until leakage is below the allowable leakage. The pipeline pressure test is successful when the makeup water added during the test is equal to or less than the allowable leakage rate (L) defined below.
8. Record results of pressure test on Pipe Test Record form included in Section 01999.
3.06 TESTING SPECIFICS
A. Copper Pipe (CUP)
1. Duration: Four hours.
2. Pressure: 150 psi.
3. Medium: Air.
4. Allowable Leakage: None.
B. Copper Tube (CUT)
1. Duration: Four hours.
2. Pressure: 150 psi.
3. Medium: Air.
4. Allowable Leakage: None.
C. Ductile Iron Pipe – Bell & Spigot (DIP-B)
1. Duration: Four hours.
2. Pressure: 150 psi.
3. Medium: Water.
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4. Allowable Leakage:
L = SD(P)1/2
148,000
L = Allowable leakage, in gallons per hour.
S = Length of the test section, in feet.
D = Nominal diameter of the piping, in inches.
P = Test pressure, in pounds per square inch gauge.
D. Ductile Iron Pipe – Flanged (DIP-F)
1. Duration: Four hours.
2. Pressure: 150 psi.
3. Medium: Water.
4. Allowable Leakage: None.
E. Polyvinyl Chloride – Pressure (PVC-P)
1. Duration: Four hours.
2. Pressure: As indicated in the following schedule:
Service Test Datum Test Pressure
Ammonia Sulfate 41.5 150 psi
Ferric Chloride 41.5 150 psi
Sodium Hypochlorite 41.5 150 psi
Sample 41.5 150 psi
Sample Drain 41.5 25 psi
Process Drain 41.5 25 psi
3. Medium: Water.
4. Allowable Leakage: None.
END OF SECTION
McCandless Well Facility
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16010 - 1
Electrical
City of Milpitas
WellUpgrades Program
McCandless Well Facility
SECTION 16010
ELECTRICAL
PART 1 - GENERAL
1.01 SCOPE OF WORK
A. The Contractor shall install, ready for use, the electrical system as specified herein and shown on the Contract drawings. This document describes the function and operation of the system and particular components, but does not necessarily describe all necessary devices. All components and devices shall be furnished and installed as necessary to provide a complete operable and reliable system for accomplishing the functions and meeting the performance set forth hereinafter.
B. Furnish all required labor, materials, project equipment, tools, construction equipment, safety equipment, transportation, test equipment, incidentals and services to provide a complete and operational electrical system, as shown on the Contract "E"-series Drawings, included in these Specifications, or necessary for fully operating facility.
C. Examine the specifications and Drawings for mechanical equipment and provide all starters, circuit breakers, switches, pushbuttons and appurtenances which are not specified to be with the mechanical equipment. Erect all electrical equipment not definitely stated to be erected by others, furnish and install conduit, wire and cable and make connections required to place all equipment in complete operation. Use Device Indexes and Contract Drawings typical installation details for mounting detail requirements to be provided for equipment listed.
D. The major areasin the scope of work shown on E-series Contract drawings which includes both the furnishing and installation are:
1. Metering/Main Switchboard, Motor Control Center, VFD motor starters and Automatic Transfer Switch.
2. Generator Termination Panel.
3. Radio system and communications commissioning.
4. Building security, gate access and video monitoring equipment will be provided and installed by others. Coordinate with subcontractor as necessary.
5. RTU Control Panel
a. RTU Control Panel enclosure, shelf, fans, thermostat controls, lights and other miscellaneous devices to be provided by System Supplier. b. RTU backpan, including RTU system hardware, components and programming for controlling the pumps, etc. and other miscellaneous backpan devices shall be by Others. Programming of RTU system, and Operator Interface shall be by Others.
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6. Existing SCADA graphic screen configuration and modificationsto existing central system and PLC/OI configuration shall be by Others.
7. Instruments and devicessupplied under Section 16940 Instrumentation.
8. Conduits, grounding system and the field interconnection wiring between the instruments, field devices, electrical enclosures, etc. as shown on plans.
9. All necessary miscellaneous shut off, sample and calibration valves to sensors.
10. Trenching, backfilling, compaction and resurfacing for all underground conduit routes, concrete pads and pull boxes.
11. Provide all necessary hardware, fittings, and devices to connect the designated equipment and wiring.
12. Site electrical devices, lights and receptacles.
13. Installation, mounting supports, interconnection drawings, wiring, start-up, testing and warranty for all equipment and systems.
E. No items for panels or MCCs shall be shipped loose for later field installation in MCC, control panel, enclosures, etc. without prior written approval of the City. Incomplete panels or MCC arriving at the jobsite shall be returned by the Contractor to the shop to complete fabrication at no additional cost to the City when directed by the City F. The following specifications incorporate specific equipment and devices that are preferred by the City because of their serviceability, because of the local availability of labor, parts and materials, or because of the ability of the City to umbrella the equipment under existing maintenance contracts; however, favorable alternatives proposed in writing during the submittal process will be reviewed by the City as whether it is acceptable as an approved equal.
G. All electrical equipment and materials, including installation and testing, shall conform to the applicable codes and standards listed in this and other Sections. All electrical work shall conform with the National Electrical Code (NEC) 2020 issue. Nothing on the Drawings or in the Specifications shall be construed to permit work or materials not conforming to these codes and standards.
H. Electrical Contractor should attend the pre-bid job walk and it is highly recommended Electrical Contractor shall have accomplished the following:
1. Thoroughly examine existing conditions before submitting his bid proposal to perform any work. He shall compare site conditions with data given on the plans or in these Specifications. No allowance shall be made for any additional costs incurred by the Electrical Contractor due to his failure to have examined the site or to have failed to report any discrepancies to the City prior to bid.
2. Verify all measurements and conditions and shall be responsible for the correctness of same. No extra compensation will be allowed because of differences between work shown on the Drawings andmeasurements at the site.
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I. It is the Electrical Contractor’s responsibility to be fully familiar with the existing conditions and local requirements and regulations. New MCCs may be installed in areas with limited space. MCC & other equipment footprints were developed based on best available information. Contractor is responsible for any additional conduits, wires, construction costs, engineering design requirements, etc. to accommodate MCCsthat are larger than that shown on Contract Documents
J. Any major deviations in location and conduit routing that the Electrical Contractor makes without the express written review or direction of the Engineer, shall be considered to have been made at the Electrical Contractor’s sole responsibility. Such deviations made by the Electrical Contractor shall be reflected on the Electrical Contractor supplied “Record Drawings” and “Conduit and Wire Routing Schedule”. The City will deduct an amount equal of reimbursement from the Electrical Contractor’s contract for all engineering, drafting, and clerical expenses associated with updating the Record Drawings and Conduit and Wire Routing Schedule due to any major unauthorized changes.
K. The term “Engineer” used throughout this Division 16 is the “City of Milpitas” Engineer or their designated Engineer representative.” The term “City” in Division 16 is the “City of Milpitas. When “Contractor” is listed in these documents without further definition such as “Electrical Contractor”, it is to mean the “Prime or General Contractor.”
1.02 RELATED WORK IN OTHER SECTIONS
A. The following are covered in other sections in the Contract documents and are part of Division 16.
1. Section 16110 – Conduit, Boxes & Grounding.
2. Section 16120 – Wire, Fuses & Terminal Blocks.
3. Section 16250 – Automatic Transfer Switch.
4. Section 16426 – Main Switchboard.
5. Section 16470 – Panelboard and Panelboard Transformer.
6. Section 16480 – Motor Control Center.
7. Section 16481 – Variable Frequency Drive.
8. Section 16605 – Electrical System Analysis.
9. Section 16915 – Control Strategies.
10. Section 16940 – Instrumentation.
B. The contents of this section apply to all "electrical and instrumentation" equipment suppliers and manufacturers doing work listed in following sections:
1. Division 1 – Submittals.
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2. Division 11 - Equipment.
3. Division 13 - Special Construction.
4. Division 15 - Mechanical.
1.03 ELECTRICAL CONTRACTOR QUALIFICATIONS
A. It is the intent of this Division that the complete responsibility for management and installation of the electrical and instrumentation required for this project be by the Electrical Subcontractor. This responsibility includes, but not limited to, supervision and coordination of work performed by all suppliers of Division 16.
B. Contractor shall submit the proposed Electrical Sub-Contractor and System Supplier that will be used on this project.
C. The Electrical Subcontractor shall meet the following minimum qualifications:
1. Has a current C-10 Electrical Subcontractor’s License.
2. Has regularly engaged in similar electrical contracting for the Municipal Water and Wastewater Industry.
3. Has successfully performed work of similar or greater complexity on at least two previous projects under one company name and under the present company name.
4. Has all persons performing work as electricians certified by the California Apprenticeship Council per California Labor Code Section 3099.
5. Has been actively engaged in the type of electrical and instrumentation work specified in this Division for a minimum of two years.
1.04 SYSTEM SUPPLIER QUALIFICATIONS
A. General:
1. It is the intent of this Division that complete responsibility in the supplying of the MCC, and all instrumentation listed for Division 16 in Section 16940 Appendix “A” Device Index and other equipment required for this project be supplied by one System Supplier. This responsibility includes, but not limited to, all work necessary to select, furnish, program, supervise installation, calibrate, and place into operation all transmitters, instruments, controllers, alarm equipment, monitoring equipment, and accessories as specified herein.
2. The system supplier shall have an on staff project engineer with prior experience on similar sized projects. This project engineer shall coordinate the technical aspects of this project and prepare the submittals and drawings. The system supplier project engineer shall attend all coordination meetings and be on-site when requested by the City’s Resident Engineer.
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B. Pre-Qualified System Suppliers
1. The Suppliers listed below have been determined to meet minimum qualifications specified in this Division and are pre-qualified by the City for providing supplier bids as system suppliers on the project.
a. Tesco Controls (Phone 916 395-8800).
b. Primex (Phone 707 449-0341).
c. Technical Systems, Inc. (TSI) (Phone 530 710-3325)
d. Control Systems West (Phone 707 763-1108)
e. Glenmount Global Solutions (Phone 707 258-8400)
C. Non Pre-Qualified Suppliers
1. System Suppliers not pre-qualified by the City shall submit the information listed herein 14 calendar days prior to bid, and if approved by the City, will be listed in a Contract addendum prior to bid opening.
2. Each System Supplier not pre-qualified shall submit they meet the following minimum qualifications:
a. Has regularly engaged in similar instrumentation systems for the Municipal Water and Wastewater Industry.
b. Has successfully performed work of similar or greater complexity on at least five previous projects under one company name and under the present company name.
c. Has been actively engaged in the type of PLCs and instrumentation work specified in this Division for a minimum of five years. d. Employs personnel on this project who have successfully completed ISA or equal training courses on general purpose instrumentation. e. Has a permanent, fully staffed and equipped service facility within 150 miles of the project site for a minimum of 1 year prior to bid date. Service facility shall be under same company name as System Supplier and same company shall be staffed with personnel and equipment required to maintain, repair and calibrate the instrumentation system. Subletting warranty to third party is not acceptable.
3. Non-pre-qualified System Suppliers shall submit detailed information of the following to the City for determination of pre-qualification:
a. Company history.
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b. List of five (5) completed projects of similar size and nature. 1) Provide completion dates of projects.
2) References of City Representative in charge of project, including contact name and telephone number.
c. List of projects in progress.
1) Description of scope of projects.
2) Dollar amount of projects.
d. Complete 2022 Year End Financial statement prepared by a Certified Accountant or complete 2022 Company Tax Returns listing assets and liabilities.
4. Additional information for clarification asrequested by the City in writing shall be provided by the System Supplier asking for the pre-qualification or prequalification will automatically be denied.
5. System Supplier providing financial statements lacking detail or stating that detailed financial records are proprietary will be disqualified as a pre-qualified System Supplier and is grounds alone for disqualification.
6. Any pre-qualification package deemed incomplete or lacking sufficient information to determine pre-qualification will result in System Supplier not being pre-qualified. No reason will be released on why a System Supplier was not pre-qualified.
D. No reason will be released on why a System Supplier was not prequalified.
1.05 CONTRACT DOCUMENTS
A. The Contract drawings and specifications are intended to be descriptive of the type of electricalsystem to be provided; any error or omissions of detail in eithershall not relieve the Contractor from the obligations thereunder to install in correct detail any and all materials necessary for a complete operational system, at no additional cost.
B. The Contract drawings are generally diagrammatic; exact locations of electrical products shall be verified in the field with the Engineer. Except where special details on drawings are used to illustrate the method of installation of a particular piece or type of equipment or materials, the requirements or descriptions in this Section shall take precedence in the event of conflict.
C. Conflicts between the Contract drawings and the specifications shall be brought to the attention of the Engineer.
D. The Contract Electrical elementary, elevation and one-line diagrams are the basis of the electrical system to be provided and are for reference only. It is the Contractor’s responsibility to adjust and make minor revisions to the diagrams as necessary for operational system at no additional cost to the City. Additional isolators, relays, wiring, terminal blocks, etc., shall be provided for an operation system at no additional cost to the City.
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E. Location at facilities of new equipment, inserts, anchors, panels, pull boxes, conduits, stub-ups, and fittings for the electrical system are to be determined by the Contractor and Engineer at time of installation. Contractor shall make minor adjustments to locations of electrical equipment required by existing conditions and coordination with other trades at no additional cost. Minor adjustments are defined as those adjustments required due to equipment size changes or variations between different equipment suppliers.
F. The Conduit and Wire Routing Schedule, wire fill, and number of conduits are based on the best information available.
1. It is the Contractor’s responsibility to modify the conduit schedule based upon Shop Drawings for the actual equipment. Such modifications in conduit sizes and numbers of conductors shall be at no additional cost to the City, if such changes are the direct result of the equipment selected by the Contractor.
2. A copy of the Conduit Schedule and Electrical plans showing conduit routing shall be updated weekly by the Contractor. Progress payments will be withheld if during monthly checksit isfound that the contractor failsto maintain the Conduit Schedule updates.
G. Electrical & instrumentation, conduit & wire lengths shown on circuit Drawings are approximate. The Contractor is responsible for determining actual lengths for bidding and installation purposes.
H. All equipment shall be installed and located so that it can be readily accessed for operation and maintenance. The Engineer reserves the right to require minor changes in location of equipment, without incurring any additional costs. These minor changes are changes which would provide adequate clearance and work areas in front of and around equipment.
I. Provide means to furnish equipment and accessories, do the installation, complete connections, submit documentation, perform start-up, and be responsible for the warranty.
J. Where conduits are shown as "home runs" on the Contract drawings or stated to be furnished, but not explicitly shown, as part of the scope of work; the Contractor shall provide all fittings, boxes, wiring, etc. as required for completion of the raceway system in compliance with the NEC and the applicable specifications in this Section.
K. No changes from the Contract drawings or specifications shall be made without written approval of the Engineer. Should there be a need to deviate from the Contract documents, submit written details and reasons for all changes to the Engineer for review within 30 days after the award of the contract.
L. When existing conduits are to be used, it is the Contractor’s responsibility to verify conduit size and routing. This includes all potholing or other location methods. Existing conductors and conduits damaged by Contractor during construction shall be repaired or replaced at no cost to City.
M. The resolution of conflicting interpretation of the Contract documents shall be as determined by the Engineer.
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N. The Electrical Contractor shall maintain a separate set of neatly and accurately marked set of Record Documents, consisting of spreadsheets, specifications and full size blue-line Electrical (E-Series) and Instrumentation (I-Series) Contract Drawings.
1. These documents are to be used specifically for recording the as built locations and layout of all electrical and instrumentation equipment, routing of raceways, junction and pull boxes, and other diagram or document changes.
2. These Record documents shall be kept up-to-date during the progress of the job, with all "change orders," submittal modifications, and construction changes shown and stamped with “As-Built” at end of job. These Record documents shall not be used for daily construction use and shall not contain any mark-upsthat are unrelated to as-built corrections.
3. The following liststhe record documentsshall be as-built by Electrical Contractor:
a. E-Series Drawings.
b. Panelboard schedules.
c. Conduit and Wire Routing Schedule.
1) A copy of the Conduit and Wire Routing Schedule and Electrical plans showing conduit routing shall be updated weekly by the Contractor. Progress payments will be withheld if during monthly checksit isfound that the contractor failsto maintain the Conduit Schedule updates.
d. Lighting Schedule.
e. Duct banks and their routing with offset measurement and indicate changes in depth. Duct bank elevations shall not be drawn or penciled in by hand. Provide CAD drawings of duct banks.
4. The following lists the record documents that shall be as-built by System Supplier to be maintained by Electrical Contractor:
a. I-Series Drawings.
b. Instrumentation Index.
5. Record documents shall be kept current weekly with all "change orders", submittal modifications, and construction changes shown. Record Documents shall be subject to the inspection by the Engineer at all times, progress payments or portions thereof may be withheld if Record Documents are not accurate or current.
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6. When documents are changed, they shall be marked with erasable colored pencils using the following coloring scheme:
a. Additions - Red
b. Deletions - Green
c. Comments - Blue
d. Dimensions- Black
7. Show the following on the Electrical (E-Series) Record Contract Drawings by dimension from readily obtained base lines:
a. Exact location, type and function of electrical and instrumentation equipment and devices.
b. Precise routing and locations of underground conduits, pullboxes, junction boxes, etc. that make-up the raceway system.
c. Show the dimensions, location and routing of electrical work which will become permanently concealed.
d. Show complete routing and sizing of any significant revisions to the systems shown.
8. Prior to acceptance of the work, the Contractor shall deliver to the Engineer one set of record full size drawings neatly marked accurately showing the information required above.
1.06 COORDINATION
A. The Contractor shall coordinate the electrical work with the other trades, code authorities, utilities, and the Engineer; with due regard to their work, towards promotion of a rapid completion of the project. If any cooperative work must be altered due to lack of proper supervision of such, or failure to make proper provisions, then the Contractor shall bear expense of such changes as necessary to be made in work of others.
B. The Contractor shall examine the architectural, mechanical, structural, electrical and instrumentation equipment provided under other Sections of this Contract in order to determine the exact routing and final terminations for all conduits and cables. The exact locations and routing of cables and conduits shall be governed by structural conditions, physical interferences, and the physical location of wire terminations on equipment.
Conduits shall be stubbed up as near as possible to equipment terminals.
C. Manufacturer's directions and instructionsshall be followed in all cases where such is not shown on the Contract Drawings or herein specified or have stipulations in order to meet warranty requirements.
D. Schedule within 20 days after award of Contract all service installations and connections with utilities. Delays due to lack of effort by the Contractor which delay the project
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completion for lack of utility services will not be considered valid and Contract liquidated damages will be assessed.
E. The Contractor shall cease work at any particular point, temporarily, and transfer his operations to such portions of work as directed, when in the judgment of the City it is necessary to do so.
F. Prior to commencing construction, the Electrical Subcontractor shall arrange a conference with the General Contractor and City as well as equipment suppliers, and shall verify types, sizes, locations, requirement, controls and diagrams of all equipment furnished by these Contractors. He shall, in writing, inform the Engineer that all phases of coordination of this equipment have been covered and if there are any unusual conditions, they shall be enumerated at this time.
G. Coordinate with City, witnessing Engineer, PLC programmer, SCADA programmer, and System Supplier to test the entire system.
H. Coordinate submittals and required meetings with the work, panel fabrication and factor tests so that project will not be delayed. This coordination shall include scheduling the different categories of submittals, so that one will not be delayed for lack of coordination with another. No extension of time will be allowed because of failure to properly schedule submittals.
1.07 SUPERVISION
A. The Contractor shall schedule all activities, manage all technical aspects of the project, coordinate submittals and drawings, and attend all project meetings associated with this Section.
B. The General Contractor shall supervise all work in this Section, including the electrical system general construction work, from the beginning to completion and final acceptance.
C. The General Contractor shall supervise and coordinate all work in this Section to ensure each phase of the project, submittal, delivery, installation, and acceptance testing, etc. is completed within the allowable scheduled time frames.
D. The Electrical Contractor shall be responsible for obtaining, preparing, completing, and furnishing all paper work for this Section; which shall include transmittals, submittals, forms, documents, manuals, instructions, and procedures.
1.08 INSPECTIONS
A. All work or materials covered by the Contract documents shall be subject to inspection at any and all times by the City. If any material does not conform to the Contract documents, or does not have a favorably reviewed submittal status; then the Contractor shall, within three days after being notified by the City, remove said material from the premises; and if said material has been installed, the entire expense of removing and replacing same, including any cutting and patching that may be necessary, shall be borne by the Contractor.
B. The Contractor shall give the City 10 working days’ notice of the dates and time for inspection. Date of inspection shall be as agreed upon by both the Contractor and City.
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C. Work shall not be closed in or covered over before inspection and approval by the Engineer. All costs associated with uncovering and making repairs where non-inspected work has been performed shall be borne by the Contractor.
D. The Contractor shall cooperate with the Engineer and provide assistance at all times for the inspection of the electrical system under this Contract. The Contractor shall remove covers, provide access, operate equipment, and perform other reasonable work which, in the opinion of the Engineer, will be necessary to determine the quality and adequacy of the work.
E. Before request for final inspection is made, the Contractor shall submit to the City in writing, a statement that the Contractor has made his own thorough inspection of the entire project enumerating punch list items not complete and that the installation and testing is complete and in conformance with the requirements of this Division.
F. The City may arrange for a facility inspection by Cal-OSHA Consultation Service at any time. The Contractor shall make the necessary corrections to bring all work in conformance with Cal-OSHA requirements, all at no additional cost to the City.
G. Contractor will be Responsible for any Additional Cost for Overtime, Weekend Overtime or Differential Time, Expenses for Inspection of Defective Work that has to be reinspected.
1.09 JOB CONDITIONS
A. The Contractor shall make all arrangements and pay the costs thereof for temporary services required during construction of the project, such as temporary electrical power and telephone service. Upon completion of the project, remove all temporary services, equipment, material and wiring from the site as the property of the Contractor.
B. The Contractor shall provide adequate protection for all equipment and materials during shipment, storage and construction. Equipment and materials shall be completely covered with two layers of plastic and set on cribbing six inches above grade so that they are protected from weather, wind, dust, water, or construction operations. Equipment shall not be stored outdoors without the approval of the Engineer. Where equipment is stored or installed in moist areas, such as unheated buildings, etc., provide an acceptable means to prevent moisture damage, such as a uniformly distributed heat source to prevent condensation.
C. The elevation of the project site is shown on Contract Civil Drawings. All equipment shall be derated, as recommended by the manufacturer or in accordance with ANSI C37.30.
D. The normal outdoor, not in direct sunlight, ambient temperature range of the job site will vary between 20 to 110 degrees Fahrenheit. All equipment shall be rated to operate in these temperature ranges or provisions for adequate heating and cooling shall be installed, at no additional cost to City.
E. The jobsite is prone to vandalism and theft. Contractor shall be responsible for securing all materials and equipment against theft and vandalism for the duration of the project.
F. Contractor shall utilize temporary services during construction of the project. No Contractors shall utilize building power, receptacles, etc. during construction.
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1.10 SUBMITTAL AND DRAWING REQUIREMENTS
A. General
1. Electrical submittals shall be submitted for favorable review by the Engineer per this subsection and Division 1. They shall be complete giving all details of connections, wiring, instruments, enclosures, materials and dimensions.
Standard sales literature will not be acceptable.
2. A copy of the appropriate Division Specification Sections, with addendum updates included and with each paragraph check-marked to indicate specification compliance or marked to indicate requested deviations from specification requirements. Check marks (√) shall denote full compliance with a paragraph as a whole. If deviations from the specifications are indicated and, therefore, requested by the Contractor, each deviation shall be underlined and denoted by a unique number in the margin to the right of the identified paragraph. The remaining portions of the paragraph not underlined willsignify compliance on the part of the Contractor with the Specifications. The submittal shall be accompanied by a detailed, written justification for each numbered item explaining variance or non-compliance with specifications. Failure to include a copy of the marked-up specification sections, along with justification(s) for any requested deviations to the specification requirements, with the submittal shall be sufficient cause for rejection of the entire submittal with no review.
3. Submittalsshall also include all other information as may reasonably be required, in the opinion of the Engineer, to demonstrate fully that the materials and equipment to be furnished and the methods of work comply with the provisions and intent of the Contract Documents. Additional submittal requirements are specified in each individual Section of the Specifications.
4. The Contractor shall coordinate submittals and required meetings with the work, panel fabrication and factory tests so that project will not be delayed. This coordination shall include scheduling the different categories of submittals, so that one will not be delayed for lack of coordination with another. No extension of time will be allowed because of failure to properly schedule submittals.
5. No submittal documents shall be labeled as proprietary. Labeling documents as proprietary will be sufficient cause for rejection of entire submittal. The City reserves the right to copy or duplicate any and all portions of the documents provided for the project including copyrighted documents as desired.
6. No material or equipment shall be allowed at the job site until the submittal for such items has been favorably reviewed by the Engineer and all comments have been addressed.
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7. Identify all submittals by submittal number on letter of transmittal. Submittals shall be numbered consecutively and resubmittals shall have a letter suffix. For example:
a. 1st submittal: 1.
b. 1st resubmittal: 1A.
c. 2nd resubmittal: 1B, etc.
8. For each resubmittal, provide a copy of submittal comments and a separate letter, on Company letterhead, identifying how each submittal comment has been addressed in the resubmittal.
9. The Contractor shall include in writing on a separate submittal cover sheet any proposed departures from the Contract documents, and the reasons therefore.
Incorporate no such departures into the work without prior written approval of the Engineer. The approval of departures which substantially deviates from the Contract documents shall be evidenced by a "change order" directive by the Engineer. Any cost differential associated with this change order must be negotiated with the Engineer to amend the Contract to reflect the costs or savings.
10. Exceptions to the Contract specifications or drawings shall be clearly defined by the equipment supplier.
a. Data shall contain sufficient details so a proper evaluation may be made by the Engineer. Contractor shall provide separate letter (located in the front of the submittal) detailing specific exceptions to the Contract Specifications or Drawings.
b. Exceptions that are noted in the marked-up Drawings or Specifications, but not listed on the Exceptions/Clarifications letter, will be considered as non-responsive and not accepted as changes to the Contract Documents
11. The equipment specifications have been prepared on the basis of the equipment first named in the Specifications. The Contractor shall note that the second named equipment, if given, is considered acceptable and equal equipment, but in some cases additional design, options, or modifications may be required to meet Specifications all at no additional cost to the City.
12. The decision of the Engineer governs what is acceptable as a substitution. If the Engineer considers it necessary, tests to determine equality of the proposed substitution shall be made, at the Contractor's expense, by an unbiased laboratory that is satisfactory to the Engineer.
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B. The electrical submittals shall include but not be limited to data sheets and drawings for each product together with the technical bulletin or brochure. The electrical submittals shall include:
1. Product (item) name used herein and on the Contract Drawings.
2. The Manufacturer's complete model number or other designation.
3. For each resubmittal, provide a copy of submittal comments and a separate letter, on Company letterhead, identifying how each submittal comment has been addressed in the resubmittal.
4. Tag name/number per the drawings or schedules.
5. Index Binder Tab Dividers.
6. Detailed electrical one line, elementary and loop diagrams and interconnection diagrams showing all wiring requirements for each system.
7. Complete documentation with full description of operation.
8. Complete catalog cuts with full description of equipment. Generalsalesliterature will not be acceptable. The part or model number with options to be provided shall be clearly identified. Where more than one item or catalog number appears on a catalog cut, the specific item(s) or catalog numbers(s) proposed shall be clearly identified.
9. Location of assembly at which it is installed.
10. Input-output characteristics.
11. Range, size, and graduations as required.
12. Physicalsize with dimensions and mounting details.
13. Enclosure size, fabrication details and color.
14. Enclosure backpan layout and elevation drawings to scale.
15. Quantity and quality requirements for electric power, air, and/or water supply.
16. Materials of construction of components.
17. Nameplate schedule.
18. Bill of Materials: A complete Bill of Materials list shall be provided similar in format to the Bill of Material shown in Appendix "A”. The Electrical Contractor shall submit separate Bill of Materials for electrical components and Generator.
The System Supplier shall submit a separate Bill of Material for the VFD panels, Switchboard, ATS, Control Panel, spare parts and another listing all field
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instruments. Generic names or part numbers used by a distributor or Systems House are not acceptable; originating manufacturer’s name and part number shall be listed.
19. Failure to provide submittals with heavy duty permanent plastic labeled index tabs may be grounds for immediate rejection without review.
20. Electronic PDF version of submittals shall follow hard copy format of submittal and shall be “bookmarked” at each index, subtab, copy of appropriate check marked Specification Section, bill of materials, copy of submittal comments (for resubmittals), Contractor’s response to submittal comments (for resubmittals), drawings, etc. Failure to bookmark PDF may be grounds for immediate rejection without review.
21. Electronic submissions of submittals may be provided for submittals less than 40 pages and without drawings. Submittals equal to or over 40 pages or those that contain drawings shall be provided in a hardcopy format. Hardcopy submittals shall be provided in binders as specified herein. The City reserves the right to reject submittals that fail to be organized as described herein.
C. Drawing Requirements: All drawings shall be drawn using AutoCAD, drawn in a professional manner and submitted on 11" x 17" sheets. Shop Drawingsshall be provided with minimum drafting details as illustrated on the Contract "electrical" series drawings.
Diagrams shall carry a uniform and coordinated set of wire colors, wire numbers, and terminal block numbers. RTU backpan supplier will provide detailed drawings for development of loop & interconnection drawings. The shop drawings shall include:
1. Electrical one line diagrams detailing all devices associated with the power distribution system. The following applicable information or data shall be shown on the one-line diagram: location, size and amperage rating of bus; size and amperage rating of wire or cable; breaker ratings, number of poles, and frame sizes; auto-transfer switch; generator and breaker; utility metering, voltage, amperage, number of wires and phases; ground size and connections; neutralsize and connections; voltage, amperage and wattage monitoring instruments; power fail and other protective devices; fuse size and type; distribution transformers; panelboards; starters; contactor size and overload range; motor full load amperage of submitted motor and horsepower; rating for miscellaneous loads; etc. Submit of all equipment motor voltage, phase and full load amps provided for this project for verification of accuracy of submitted one line drawings.
2. Elementary diagramsshall be provided for all relay logic, power supplies, PLC and other wiring not shown on the loop diagrams. All elementary diagrams shall be drawn in EMP/EGP format and standards similar to those shown on the E-series elementary diagrams showing ladder rung numbers and coil & contact cross referencing numbers. Show all panel wiring as solid lines and all field wiring as dashed lines.
3. Analog and digital I/O loop diagrams shall be provided showing the wiring requirements for each instrument loop. Graphic symbols shall conform to ISA
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S5.4 drawing standards. A loop diagram shall be furnished for each analog and digital I/O process and all PLC I/O cards. Loop diagramsshall include the following as a minimum:
a. The loop diagram shall be drawn with sufficient detail to express control philosophy. The diagram shall show all components and accessories of the instrument loop, highlighting special safety and other requirements.
These diagrams shall be arranged to emphasize device elements and their functions as an aid to understanding the operation of a system and for maintaining or troubleshooting that system.
b. All termination points on the loop diagram shall be shown with the actual equipment identification, device and relay terminal number or letter, and I/O point P&ID English descriptor and tag name.
c. Energy sources - electrical power, air supply, pneumatic and hydraulic fluid supply, designating voltage, current, pressure, etc.shall be shown in detail on the diagram. Input and output signals (e.g., 1-5 VDC, 4-20 mA DC, 3-15 psig, etc.), power and instrument supplies to devices (e.g. 120 VAC, 24 VDC, 80 psig, etc.) shall be shown.
d. Engineering units shall be shown on the diagram. Each wire label and color code shall be shown. Signal and DC polarities shall be shown. e. All spare wires, cables and termination points shall be shown. All jumpers, grounding, shielding, power supply details shall be shown.
4. Enclosure and Elevation layout diagrams for all electrical panels and enclosures; show all front panel and backpan devices drawn to scale. Show fabrication methods and details; including material of construction, paint color, support & latching mechanisms, fans (with removable metal filters) & ventilation system, and conduit entrance areas.
5. Interconnection Diagrams - An interconnection diagram shall be furnished for each electrical and instrumentation system, even if one was not shown explicitly on the Contract Drawings. Interconnection diagrams shall show for each piece of equipment all wiring between all devices, panels, cabinets, terminal boxes, control equipment, motor control centers and any other devices and equipment even if they are not provided by the System Supplier. Each interconnection diagram shall include the following as a minimum:
a. Interconnect Drawingsshall be prepared for all equipment by the System Supplier. All conduits listed in the Conduit and Wire Routing Schedule shall have interconnection drawings prepared by the System Supplier. b. The diagrams shall be utilized by the electrician during all phases of installation and connection of all conductors to ensure coordination of equipment interconnects.
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c. The diagrams shall show wiring as field labeled at the end of the project when as-builts are submitted.
d. Each wire labeling code as actually installed shall be shown. The wiring labeling code for each end of the same wire must be identical. e. All devices and equipment labeling codes shall be shown. f. Interconnectionsshall be of the continuousline type with identified lines.
Diagrams of the wireless or wire schedule type are not acceptable.
Bundled wires shall be shown as a single line with the direction of entry/exit of individual wires clearly shown.
g. All terminations points on the diagram shall be shown with the actual equipment identification terminal number or letter. This identification of terminations includes terminal blocks, junction boxes, all devices, computer I/O points, etc.
h. Diagrams shall include raceway numbers, raceway size, raceway type, cable numbers, wire color code, and wire numbers. Wire numbers used on interconnection diagrams shall match wire numbers used on other submitted drawings (i.e. elementary diagrams, I/O wiring diagrams, etc.) i. Each wire, AWG cable size and color code shall be shown. Each conduit with the conduit label and conduit size and wire fill shall be shown. Wire and cable routing through conduits, wireways, manholes, handholes, junction boxes, terminal boxes and other electrical enclosures shall be shown with the appropriate equipment labels. Allspare wires, cable, and termination points shall be shown. Cable shields shall be shown. j. Labeling codes for terminal blocks, terminals, wires, cables, panels, cabinets, instruments, devices, and equipment shall be shown. Place “øA”, “øB”, and “øC” label next to each breaker to identify phase connected to.
k. Schematic symbols shall be used for field devices, showing electrical contacts. Signal and DC circuit polarities shall be shown. l. The diagrams shall show all other Contract and supplier drawing numbers, for reference, that are associated with each device that is interconnected.
m. The diagrams shall show all other Contract and Supplier drawing numbers, for reference, that are associated with each device that is interconnected.
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1) Attached to each interconnect, a copy of all the support documents used in preparing interconnects shall be submitted.
This includes:
a) Current issues of panel schematics
b) Elementary diagrams
c) Panelboard schedules
d) Conduit schedules
e) One-line diagrams
f) Connection diagrams
g) Terminal block diagrams
h) Submittals(including instrumentation wiring diagrams) i) Contract Drawings, vendor drawings and all other data used to develop the interconnection diagram as noted in the “Reference Documents” corner of interconnect
drawings.
n. Interconnects shall include list of all applicable reference drawings, request for clarifications, field instructions and change orders. All deletions and additions of equipment, wire and cables shall be clearly shown.
o. Clearly state why termination data is not available. Statements should point to applicable area and be placed in a bold box.
p. Field wiring shall not start before the interconnection drawing have been submitted by the Contractor and approved by the City.
q. Do not show the same wires or jumpers, or panel wiring on the elementary or loop and interconnection diagrams. All jumper, shielding, and grounding termination details not shown on the connection diagrams shall be shown on the interconnection diagrams.
r. Interconnection diagrams shall be submitted and approved by City for each electrical and instrumentation system. The Contractorshall not pull in any wires into conduits that does not have approved interconnects. If the Contractor pulls in wire without City approval of associated interconnect drawings, the Contractor will not be reimbursed for labor for re-pulling in wires even if there was an error in wire fill or sizing. Also, if the Contractor pulls in wire without City approval of associated interconnect drawings, then all progress payments related to field wiring for that particular area of work will be withheld until approved interconnect drawings are in use.
s. All interconnection diagrams shall be prepared by a System Supplier under the supervision of or by a Registered Electrical Engineer and shall bear that Engineer’s professionalstamp and signature on each and every
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interconnect drawing submitted for approval and on as-built interconnect drawings and those used in the field installation. Engineer’s stamp missing from interconnection drawings will be sufficient grounds to reject entire interconnection drawing submittal without review. All deletions and additions of equipment, wire, and cables shall be clearly shown. Interconnects shall include list of all applicable reference Drawings,request for clarifications, field instructions, and change orders. t. Example format of Interconnection diagram is shown on Contract “E”- series Drawings or may be obtained from the Engineer.
u. Interconnection Drawings shall use bundled wire format as shown on example interconnect Contract Drawing. Interconnect drawings submitted with wiring of a single conduit run separated onto multiple interconnect drawings will be rejected without review. A single conduit run with wiring shown on separate interconnect drawings will be allowed only after written approval is given by the Engineer for each conduit run prior to submitting the associated interconnect drawings. v. Only field wiring between switchboards, MCCs, Panelboards, Control Panels, and other electrical and instrumentation devices or equipment shall be shown on interconnection drawings. No internal panel wiring shall be shown on interconnect drawings except jumper or other wiring to be installed in field by Electrical Contractor.
w. Interconnect Drawings along with the corresponding support documents shall be submitted in a separate submittal package. Interconnect drawings submitted with non-interconnect drawing packages will be rejected. The latest support documents shall be obtained by system supplier from Contractor for all non-division 16 instruments, panels, and equipment, and included with interconnect drawing submittal. Support documentsshall have theirsubmittal number marked in upper right hand corner.
x. Interconnect drawings shall be prepared for all equipment by the System Supplier with the exception of the Security Alarm System which shall produce their own interconnect drawings.
y. Provide a notes section on each interconnect drawing. In the note section list any variances from the Contract conduit schedule necessary for completing the interconnections. Change orders regarding wire fill, conduitschedule and errorsin plansregarding conduits and wires will not be processed until interconnect drawings have been received for such work.
z. The field electrician shall mark-up all interconnection diagrams during installation to show accurate as-built wiring, conduits runs, terminations, etc. If interconnection drawings are not properly as-built, the Electrical Contractor will have cost deducted from the Contract for the City to
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Electrical
City of Milpitas
WellUpgrades Program
McCandless Well Facility
field verify and prepare as-built interconnection drawings amount. The amount of the deduction shall be determined on a time and material basis. The cost of such work shall be $120.00 per hour, plus expenses. aa. The system supplier shall be responsible to collect all information necessary to complete each interconnection drawing at no additional cost to the City. This includes making field trips to collect all terminal connection data for new and existing, MCCs, switchboards, panelboards, instruments, equipment and electrical panels.
bb. An index of drawings shall be provided with each Interconnection submittal listing the unique drawing number and the description of the interconnect drawing (e.g. Drawing 4321-IC1004 Pump 1004 Interconnect Drawing).
cc. Provide conduit and interconnect drawing cross reference indexes.
Interconnect Conduit Index shall list all conduits listed in the Conduit & Wire Routing schedule and its associated Interconnection Drawing number. An Interconnection Drawing Index shall list all Interconnection drawings and the conduits shown on that specific drawing. These two indexes shall be at the front of all interconnection drawing submittals.
6. Duct banks and their routing with offset measurement and indicate changes in depth. Duct bank elevations shall not be drawn or penciled in by hand. Provide CAD drawings of duct banks.
7. Conduit layout diagrams drawn to scale utilizing AutoCAD, with all conduit tags and size listed, shall be submitted and approved prior to underground conduits being installed. Conduits, duct bank and enclosure entriesshall be drawn to scale.
The following conduit layout diagrams shall be prepared and submitted by Electrical Contractor for approval.
a. Diagrams for conduit stub-up locations into the bottom of:
1) All Panels and Enclosures with 10 or more conduit entries. 2) All new MCCs.
3) Power Transformers.
b. Diagrams for conduit crosssections for:
1) All concrete duct banks.
2) Each conduit run between all vaults and pull boxes shown on Contract Drawings.
8. Submit fullsize drawing of all nameplates and tags, asspecified herein, to be used on project. The Engineer has the right to adjust nameplate engraving titles during submittals at no additional cost to the City. Submittal to include the following:
a. Dimensions of nameplate.
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City of Milpitas
WellUpgrades Program
McCandless Well Facility
b. Exact lettering and font for each nameplate.
c. Color of nameplate.
d. Color of lettering.
e. Materials of construction.
f. Method and materials for attachment.
g. Drawing showing location of nameplate on each panel.
9. Copying contract drawings and providing them as submittals will be considered unresponsive and the submittal will be rejected without review.
D. Submittal Format - Each submittal shall be bound in a three ring binder, which is sized such that when all material is inserted the binder is not over 3/4 full. Binder construction shall allow easy removal of any page without complete manual disassembly; spiral ring type binders are not acceptable.
1. Each bindershall be appropriately labeled on the outside spine & front cover with the project name, contract number, equipment supplier's name, specification section(s), and major material contained therein.
2. Submittals shall be provided in binders as specified herein. The City reserves the right to reject submittals that fail to be organized as described herein.
3. An index shall be provided at the inside of the front cover. Thisindex shall itemize the contents of each tab and subtab section. Also list the project name, contract number and equipment supplier's name, address, phone number, and contact person on the index page.
4. Resubmittals shall be provided with a copy of the previous submittal comments and a separate letter, on company letterhead, identifying how each submittal comment has been addressed in the resubmittal.
5. All copies shall be clear and legible. Data sheets shall be provided for each instrument, with an index and proper identification and cross-referencing. Clearly identify calibration ranges for all instruments.
6. Exceptions to the Specifications or Drawings shall be provided at the front part of the submittal.
7. Field equipment shop documents, panel equipment shop documents, drawings, and bill of materials shall be grouped under separate tabs. Shop documents shall be ordered in the same sequence as their corresponding Contract specification subsection.
8. Data summary sheets shall be provided to subtab all shop documents for each individual piece of equipment. Data summary sheetsshall be bright yellow or blue
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City of Milpitas
WellUpgrades Program
McCandless Well Facility
for easy identification. The data summary sheets shall have the following information preceding their corresponding shop documents:
a. Product identification; name used herein and on the Contract Drawings. b. The manufacturer's model number, part number or other designation.
Thisshall include the specific numbers of all proposed options c. Tag name/number per the drawings or schedules.
d. Location of assembly at which it is installed.
e. Range, span, engineering units, input and output characteristics. f. Contractspecification subsection number.
9. Drawings that are "C" or "D" size shall be folded with the title block visible and placed in reinforced clear plastic pockets.
10. Request for information (RFIs) shall not be included in submittals. RFIs supplied with submittals will not be answered. RFIs shall be submitted following proper channels.
1.11 CHANGE ORDER PRICING
A. All change order pricing by Contractor or System Suppliershall be per General Conditions
5.4. 1.12 CODES AND STANDARDS
A. All electrical/instrumentation equipment and materials, including installation and testing, shall conform to the following applicable codes and standards:
1. ANSI - American National Standards Institute, Inc.
2. CBC - California Building Code, 2022 Edition
3. CEC - California Electrical Code, 2022 Edition
4. CEnC - California Energy Code, 2022 Edition
5. CFC - California Fire Code, 2022 Edition
6. CGBC - California Green Building Code, 2022 Edition
7. EIA - ElectronicsIndustries Association.
8. ETL - Electrical Testing Laboratories.
9. FM - Factory Mutual.
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City of Milpitas
WellUpgrades Program
McCandless Well Facility
10. GO128 - General Order No. 128, Rules for Construction of Underground Electrical Supply and Communication Systems, Public Utilities Commission of the State of California.
11. IEEE - Institute of Electrical and Electronics Engineers.
12. ICEA - Insulated Power Cable Engineers' Association.
13. ISA - International Society of Automation (ISA) Standards
14. MCC - Milpitas Municipal Code, 2023 Edition,
15. NEC - National Electrical Code, 2020 Edition.
16. NEMA - National Electrical Manufacturers Association.
17. NETA - Acceptance Testing Specifications for Electrical Power Distribution Equipment and Systems, International Electrical Testing Association.
18. NESC - National Electrical Safety Code.
19. NFPA - National Fire Protection Agency.
20. OSHA - Occupational Safety and Health Act Standards.
21. UL - Underwriter's Laboratories, Inc.
B. The revisions of these codes and standards in effect on the date of issuance of the Contract Documents shall apply.
C. Codes and standards referenced shall be considered minimum acceptable work.
D. In instances where two or more codes are at variance, the most restrictive requirements shall apply.
E. Nothing on the Drawings or in the Specifications shall be construed to permit work or materials not conforming to the preceding codes and standards.
F. All work shall also be performed in accordance with the City, State, County or City standards, and local Utility codes.
G. The Contractorshall furnish without extra charge any additional material and labor which may be required for compliance with these codes and standards, even though the work is not explicitly mentioned in the Specifications or shown on the Contract E- Series Drawings.
H. Amperage listed on the single-line drawings for motors are per NEC Table 430.250 and may not necessarily match that of the equipment supplied. It is the electrical system supplier and Contractor’s responsibility to furnish equipment sized for the motors supplied for this project at no additional cost.
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Electrical
City of Milpitas
WellUpgrades Program
McCandless Well Facility
I. All electrical work shall conform with the National Electric Code (NEC) 2020 issue and the latest NFPA 70E. Nothing on the Drawings or in the Specifications shall be construed to permit work or materials not conforming to these codes and standards.
PART 2 - MATERIALS
2.01 QUALITY
A. It isthe intent of the Contract specifications and drawings to secure the highest quality in all materials and equipment in order to facilitate operation and maintenance of the facility. All equipment and materialsshall be new and the products of reputable suppliers having adequate experience in the manufacture of these particular items. For uniformity, only one manufacturer will be accepted for each type of product. Provide the manufacturer’s latest design that conforms to these Specifications.
B. All equipment shall be designed for the service intended and shall be of rugged construction, of ample strength for all stresses which may occur during fabrication, transportation, erection, and continuous or intermittent operation. All equipment shall be adequately stayed and braced and anchored and shall be installed in a neat and workmanlike manner. Appearance and safety, as well as utility, shall be given consideration in the design of details. All components and devices installed shall be standard items of industrial grade, unless otherwise noted, and shall be of sturdy and durable construction suitable for long, trouble free service. Light duty, fragile and competitive grade devices of doubtful durability shall not be used.
C. Products that are specified by manufacturer, trade name or catalog number established a standard of quality and do not prohibit the use of equal products of other manufacturers provided they are favorably reviewed by the Engineer prior to installation.
D. Underwriters Laboratories(UL) listing isrequired for allsubstituted equipment when such a listing is available for the first named equipment.
E. When required by the Contract specifications or requested by the Engineer, the Contractor shall submit equipment or material samples for test or evaluation. The samples shall be furnished with information as to their source and prepared in such quantities and sizes as may be required for proper examination and tests, with all freight and charges prepaid. All samples shall be submitted before shipment of the equipment or material to the job site and in ample time to permit the making of proper tests, analyses, examinations, rejections, and resubmissions before incorporated into the work.
F. All equipment shall be designed and constructed so that in the event of a power interruption, the equipment specified hereunder shall resume normal operation without manual resetting or operator interaction when power is restored.
G. Signal transmission from remote or field electric and electronic devices shall be 4-20 mA, sourced by a 24 VDC loop supply from the panel that isto receive the signal. Nonstandard transmission methodssuch asimpulse duration, pulse rate, and voltage regulated will not be permitted except where specifically noted.
H. Outputs of equipment that are not of the standard signals as outlined, shall have the output immediately raised and/or converted to compatible standard signals for remote transmission.
I. It is the System Supplier’s responsibility to visit jobsite to collect and document existing equipment device part numbers in order for all new equipment to match existing.
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City of Milpitas
WellUpgrades Program
McCandless Well Facility
2.02 NAMEPLATES & TAGS
A. Equipment exterior nameplates - Nameplate material shall be rigid laminated black phenolic with beveled edges and white lettering; except for caution, warning, and danger nameplates the color shall be red with white lettering. The size of the nameplate shall be as shown on the drawings. No letters are allowed smaller than 3/16". All phenolic nameplates located outdoors shall be UV resistant. Securely fasten nameplates in place using two stainless steel screws if the nameplate is not an integral part of the device.
Epoxy cement or glued on nameplates will not be acceptable. Engrave the nameplates with the inscriptions as approved by the Engineer in the submittal.
1. For each major piece of electrical equipment provide a manufacturer's nameplate showing the Contract specified name and number designation, the manufacturer's name, model designation, part number, serial number, and pertinent ratings such as voltage, amperage, # of phases, range, calibration, etc.
2. For each device with a specific identity (pushbutton, indicator, instrument, etc.) mounted on the exterior or deadfront of a piece of equipment provide a nameplate with the inscription as shown in the Contract documents. Where no inscription is indicated in the Contract documents, furnish nameplates with an appropriate inscription providing the name and number of device.
3. For all receptacles and switches (including devices located on Switchboard or MCC), provide a faceplate engraved or stamped with the panelboard and circuit number it is fed from. Also, include on faceplate or on a separate nameplate for each light switch identification use such as “OUTSIDE BUILDING LIGHTS”, “PERIMETER LIGHTS”, “MCC ROOM”, etc. Adhesive plastic labels are not acceptable.
4. All field instruments and devicesshall be labeled with designation shown on P&ID diagrams.
5. All transformers and panelboards shall have nameplates with ½" high letters and be engraved with designations as shown on one-line Drawings or as directed by Engineers.
6. All safety and disconnect switches shall have nameplates with ½” high and be engraved with designations as shown on one-line drawings or as directed by Engineers.
7. Underground Pull Box and Vault Cover Identification: Engrave or bead weld pull box covers with minimum 1/4”thickness and 1/2” letters and covers shall be engraved with designations as shown on Contract drawings or as directed by City.
8. Aboveground Pull Box Cover Identification: 316 stainless steel screws attached stamped 316 stainless steel plate nameplates with 1/2” letters and be engraved with designations as shown on Contract drawings or as directed by City.
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9. Service entrance equipment shall have engraved nameplate with 1” letters (red with white lettering) indicating type and location of standby generator per NEC 702.7 (A).
10. Service entrance equipment shall have engraved nameplate for generator grounding per NEC 702.7(B)
11. Service Equipment Label: Per NEC 110.24 (A) Service equipment shall be legibly marked in field with the maximum available fault current. Field marking shall include date the fault current calculation was performed and be weather & UV rated. Service equipment shall not be hand labeled.
12. All subpanels shall be identified with an engraved phenolic label of the power source location feeding it (i.e. MCC-100, Panelboard LP-1, etc.)
13. Generator receptacles and generator lug panels shall have engraved nameplate with 1” letters (red with white lettering) per NEC 702.7.(C)
14. Specific equipment fed from more than one feeder shall be properly identified (“Fed from MCC-B and the standby generator”).
B. Equipment Interior Nameplates - Nameplate material shall be white plastic with black machine printed lettering as produced by a KROY or similar machine; except caution, warning, and danger nameplates shall have red lettering.
1. The size of the nameplate tape shall be no smaller than 1/2” in height with 3/8" lettering unless otherwise approved by the Engineer. Securely fasten nameplates in place on a clean surface using the adhesion of the tape. Add additional clear glue to hold the nameplate securely in place when necessary.
2. For each device with a specific identity (relay, module, power supply, fuse, terminal block, etc.) mounted in the interior of a piece of equipment provide a nameplate with the inscription as shown in the Contract documents.
3. Where no inscription is indicated in the Contract documents, furnish nameplates with an appropriate inscription providing the name and number of device used on the submittal drawings. Stamp the nameplates with the inscriptions as approved by the Engineer in the submittal.
4. Nameplates shall not be attached to wireway covers or to removable devices.
5. For all receptacles and switches (including devices located in Control Panel, provide a faceplate machine printed with the panelboard and circuit number it is fed from.
C. Equipment Tags - When there is no space or it is impractical to attach an engraved phenolic nameplate with screws, as is the case with most field devices and instruments, the Contractor shall attach a tag to the equipment with the same inscriptions asspecified above in paragraph A. The tag shall be made from stainless steel material and the size of the nameplate shall be no smaller than 3/8"h x 2"w with 3/16" machine printed or
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Electrical
City of Milpitas
WellUpgrades Program
McCandless Well Facility
engraved lettering unless otherwise approved by the Engineer. The tag shall be attached to the equipment with stainless steel wire of the type normally used for this purpose.
Twisting ends together is not acceptable.
D. Engrave or machine print the nameplates and tags with inscriptions as approved by the Engineer in the nameplate submittal.
E. Provide temporary labels for all instruments and devices immediately when installed.
Temporary labels shall be provided with 1/2" letters minimum and labeled with P&ID tag number.
2.03 COMPONENTS
A. Fuses
1. Fuses used in circuits 200 VAC and above shall be time- delay type FNQ or approved equal, 13/32" x 1-1/2", and have an interrupting rating of 10,000 AIC at 500 VAC. Fuse holders shall be of the barrier type and rated 600 VAC.
2. Fuses used in 120 VAC circuits shall be fast-acting type CC or approved equal, 13/32" x 1-1/2", and have a rating of 250 VAC. Fuse-holders shall be of the terminal block type.
3. Fuses used in signal and 24 VDC circuitsshall be fast acting type GMA or approved equal, 5mm x 20 mm and have a rating of 250 VAC. Fuse-holders shall be of the terminal block type.
4. Fuses shall be sized in conformance with the NEC.
B. Switches and Pushbuttons
1. Switches (HS) and pushbuttons (HC) for general purpose applications shall be water and oil tight as defined by NEMA 4X, corrosion resistant as defined by NEMA ICS 6-110.58, U.L. listed, standard 30 mm diameter, with round plastic clamp ring. Switches shall be Allen-Bradley 800H, or approved equal.
2. Switches and pushbuttons shall have contacts rated 10 amperes continuous and 600 VAC.
3. Manufacturer's standard size legend plates shall be provided and engraved to specify each switch and pushbutton function. The legend plate color shall be black. Stop and emergency stop pushbuttons shall have red legend plates.
4. Selector switch handles shall be black. Pushbutton caps shall be colors shown on Contract Drawings or approved in submittals.
5. Selector Switch Positions
a. Hand-off-auto (HOA) applicationsshall have the hand position to the left, off in center, and auto in the right position.
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b. On/Off shall have the ON position to the right.
c. Local/Remote shall have the REMOTE position to the right. d. Open-Close-Auto applications shall have the open position to the left, close in center, and auto in the right position.
6. Red mushroom operator, two position switch that latches in both “in” and “out” positions.
C. Relays and Timers
1. General: Relays and timers shall be provided with N.O. or N.C. contacts as shown on the Contract drawings. All spare contacts shown shall be provided. Contacts shall be rated 10 amps minimum at 120 VAC, 60 Hz unless otherwise stated.
Supply power or coil voltage shall be 120 VAC unless shown otherwise on the Contract drawings or when relay is utilized in 24V DC control circuits. Relays and timers shall be designed for continuous duty. All relays shall be U.L. listed. The following is a summary of abbreviations associated with relays and timers:
CR - Control relay
PFR - Power Fail Relay
TR - Timing relay
TDOE - Time delay on energization
TDOD - Time delay on de-energization
2. Control relays (CR) shall be plug-in type with indicating lights and clear see-through sealed or enclosed housing to exclude dust. Socketsfor plug-in relays shall be standard industrial type octal 8 or 11 pin with barrier pressure screw terminals. Provide IDEC Type RR, Potter and Brumfield KU, or approved equal.
Two form-C contacts (minimum) shall be provided on each relay.
3. Interposing PLC Control relays (CR) shall be plug-in type with indicating lights enclosed housing to exclude dust. Provide Finder 4C series, Schneider Magnecraft Class 782 or 750 or approved equal.
4. The power fail relay (PFR) shall continuously monitor the three phases for power loss, low voltage, phase loss, and phase reversal. The power fail monitor shall have a drop-out voltage adjustment, an adjustable delay on make time delay (0.2 to 8.0 minutes) and a status indicating LED. Power fail relays shall be Time Mark, Diversified SLJ, or approved equal.
5. Time delay relays (TR) shall be solid state plug-in relays with a timer adjustable over the range 1 second to 10 minutes unless other ranges are indicated or required. Provide LED timer energized indicator lamp. Sockets for plug-in timers shall be standard industrial type blade 8 or 11 pin with barriered pressure screw
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terminals. Time delay relays shall be IDEC, Potter and Brumfield, or approved equal.
6. Provide and install all moisture or temperature protection relays when required for equipment or motor/pump warranty conditions including any additional conduits for low voltage signal wiring. Submitted drawings shall include the wiring and terminations for all of these relays.
D. Indicating Lights
1. Indicating Lights for general purpose applications shall be NEMA 4X, corrosion resistant as defined by NEMA ICS 6-110.58, U.L. listed, with 120 VAC LED lamp and built-in push-to-test switch, standard 30 mm diameter, with round plastic lens and miniature bayonet lamp base. Indication lights shall be Allen-Bradley 800H, or approved equal.
2. Manufacturer's standard size legend plates shall be provided and engraved to specify each light's function. The legend plate color shall be black.
3. Indicating light type and color of lens shall be as shown on the Drawings or specified in the Contract documents. Lamp color will be as follows:
a. Opened/On Green
b. Closed/Off Red
c. Alarm Amber
d. Power On White
4. Indicating lights designated "PTT" shall be provided with a push-to-test switch and wiring.
E. Elapsed Time Meters
1. Elapsed time meters (ETM) for general use shall be non-resettable with 0.0 to 99,999.9 hour readout, permanently lubricated synchronous motor drive, nominal 2-1/2” circular two-hole surface mount housing, screw terminals, and rated at 120 VAC, at 60 Hz. Elapsed time meters shall be Cramer 635, StemcoEngler Series 210, or approved equal.
F. Circuit Breakers
1. Circuit breakers shall be of the indicating type, providing ON, OFF and TRIPPED positions of the operating handle. Circuit breakers shall be quick-make, quickbreak, with a thermal-magnetic (TM) action or Motor Circuit Protectors (MCP) as shown on One-Line Diagrams. Circuit breakers feeding Soft Starters or VFDs shall have true adjustable Long, Short and Instantaneous trip units. Panelboard circuit breakers shall be the bolt-on on type. The use of tandem or dual circuit breakers in a normal single-pole space to provide the number of poles or spaces specified are not acceptable. All multiple-pole circuit breakers shall be
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designed so that an overload on one pole automatically causes all poles to open.
Circuit breakers and motor circuit protectors shall be manufactured by Eaton, G.E., ITE, or approved equal.
2. Where shown, circuit breakers with a frame size of 450 amperes to 1200 amperes shall be molded case with electronic microprocessor based RMS trip elements.
Molded case circuit breakers with electronic trip shall be Eaton Series C N-Frame Type NG-H with Digitrip 310+ Electronic ALSIG trip unit, or approved equal. The interrupting capacity of all main, and feeder branch circuit breakers shall be a minimum of 65,000 RMS symmetrical amperes at operating voltage. Ground fault shall be provided where indicated on Contract Drawings and for all service disconnects rated 1,000 amps or more.
3. Breakers shall be sized and have a minimum interrupting capacity as shown on Drawings and as required for the supplied equipment.
4. Breakers requiring GF trip on E-Series Drawings shall be provided with breakers with integral ground fault trip.
5. Thermal magnetic circuit breakers with frames 250A and above shall be provided with removable interchangeable trip units.
6. Fused disconnects shall not be used in place of breakers.
7. Breaker for HVAC equipment shall have HACR rating.
8. Provide larger circuit breaker asrequired for supplied equipment at no additional cost to City.
9. All breakersshall be supplied with the correctsized copper only lugsfor wire sizes as listed in “Conduit & Wire Routing Schedule”. Provide larger frame breaker or lug adapters as necessary when connecting to the listed oversized wire.
G. Control Power Transformer
1. Control power transformer shall be provided with a time-delay, slow-blow secondary fuse rated to protect the transformer and interrupt 10,000 amperes at 120VAC. Two primary fuses with KAIC interrupt rating of corresponding power connection shall be provided. Transformer size minimum ratings shall be as shown on Contract E-series drawings. When size is not shown on E-series Contract Drawings, then the following lists the minimum control power transformer per NEMA Starter size or VFD/Soft Starter size:
CONTACTOR
NEMA SIZE
STARTER
VFD/
SOFT STARTER
AMPS
CTRL PWR XFMR
VA RATING
(MIN)
SIZE 00 9 150
SIZE 0 18 150
SIZE 1 27 150