40_00_52_Exposed_Piping_Installation_Add1.docx

INFRASTRUCTURE IMPROVEMENTS FOR THE

SOUTH BAY INTERNATIONAL WASTEWATER TREATMENT PLANT

San Diego County, California

SPECIFICATION 40 00 52

EXPOSED PIPING INSTALLATION

PART 1 - GENERAL

1.1 RELATED DOCUMENTS, CONTRACT CLAUSES, AND SPECIFICATIONS

The following may not include all related documents, contract clauses, and technical specifications, and does not relieve the Contractor of the responsibility of performing work associated with this specification in accordance with all terms of the Contract herein.

A. Related documents: As described in Specification 00.01.10 Table of Contents Governing.

B. Contract: Section I “Specifications and Drawings for Construction”

C. Other Specifications. Related work specified within the Contract that shall apply to all equipment, materials, labor and services furnished under this Specification shall include, but not be limited to, the following:

(1) Division 1, General Requirements

· SPECIFICATION 01 33 00, Submittal Requirements

· SPECIFICATION 01 69 00, Control of Materials and Products

· SPECIFICATION 01 75 01, Starting and Placing Equipment in Operation

· SPECIFICATION 01 75 02, Field Tests of Equipment

· SPECIFICATION 01 78 36, Warranty

· SPECIFICATION 01 78 23, Operation and Maintenance Data

(2) Division 9, Finishes

· SPECIFICATION 09 91 00, Painting

(3) Division 23

(4) Division 40

· SPECIFICATION 40 00 50, General Piping Provisions

· SPECIFICATION 40 00 92, Wall Pipes, Floor Pipes and Pipe Sleeves

· SPECIFICATION 40 00 94, Pipe Markers

1.2 DESCRIPTION

A. Scope: The Contractor shall provide all labor, materials, equipment, services and incidentals as shown, specified and required to furnish, install and test all exposed piping, fittings, and specials. The Work includes, but is not limited to, the following:

(1) All types and sizes of exposed piping, specified herein and in other Specifications of the Contract Documents, and shown on the Contract Drawings.

(2) Piping embedded in concrete within a structure or foundation will be considered as exposed and included herein.

(3) Supports, restraints, thrust blocks and other anchors.

(4) Work on or affecting, or connecting to existing piping.

(5) Testing.

(6) Cleaning and disinfecting.

(7) Disposal of water.

(8) Installation of all jointing and gasketing materials, specials, flexible couplings, mechanical couplings, harnessed and flanged adapters, sleeves, tie rods, closures, end caps, bulkheads, plugs, bolts, nuts, jointing and gasketing materials, and all other Work required to complete the exposed piping installation.

(9) Valves, meters and special items shown or specified shall be incorporated into the piping systems as required and as specified in Divisions 23 and 40.

(10) Unless otherwise specifically shown, specified, or included under other Specifications, all exposed piping Work required, beginning at the outside face of structures or building foundations and extending into the structure and buildings.

B. Coordination:

(1) The Contractor shall review installation procedures under other Specifications and coordinate the Work that must be installed with or attached to the exposed piping Work.

(2) Manufacturers and suppliers of the equipment and materials specified herein shall be required to review and satisfy all relevant requirements of other sections of the Contract Documents and the requirements of the Contract Drawings. The Contractor, manufacturer, supplier, fabricator and/or subcontractors furnishing and/or installing equipment, materials, services and specialties associated with this Specification shall fully coordinate their efforts to avoid potential claims that are based on failure to review relevant Contract Documents, including the Contract Drawings.

(3) The Contractor shall furnish and install all equipment, labor, materials, appurtenances, specialty items and services not provided by the Contractor's manufacturers, suppliers, fabricators and/or subcontractors but required for complete and operable systems.

1.3 QUALIFICATIONS, DESIGN CRITERIA, AND STANDARDS

A. Manufacturer's Qualifications:

(1) Manufacturers of each piping system shall have a minimum of 5 years of experience producing pipe and fittings, and shall show evidence with their submittal of at least 5 installations in satisfactory operation. The qualifying installations shall consist of facilities with the approximate extent of pipe and fittings as this project.

(2) Pipe and fittings of each piping system shall be the product of one manufacturer.

B. Standard Specifications for Public Works Construction, 2006 (SSPWC): Some work specified herein is subject to conform to the requirements of the SSPWC. Where there is a conflict between the SSPWC and these Technical Specifications, provisions of these Technical Specifications shall govern.

C. International Building Code, 2006 (IBC): The Contractor shall comply with the provisions of the IBC.

D. Other Reference Industry Standards / Specifications: Reference / industry standards shall apply to all equipment, materials, labor and services furnished under this Specification shall include, but not be limited to, the following:

(1) American Society of Mechanical Engineers (ASME) / American National Standards Institute (ANSI) B16.3 (2006), Malleable Iron Threaded Fittings Classes 150 and 300.

(2) ASME / ANSI B16.4 (2006), Gray Iron Threaded Fittings Classes 125 and 250.

(3) ASME / ANSI B16.5 (2003), Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24 Metric/Inch Standard.

(4) ASME / ANSI B16.9 (2007), Factory-Made Wrought Buttwelding Fittings.

(5) ASME / ANSI B16.11 (2005), Forged Fittings, Socket-Welding and Threaded.

(6) ASME B31.1 (2007), Code for Power Piping.

(7) ASME B31.3 (2006), Code for Process Piping.

(8) ASME / ANSI B31.8 (2007), Gas Transmission and Distribution Piping Systems.

(9) ASME / ANSI B36.19M (2004), Stainless Steel Pipe.

(10) ASME Boiler and Pressure Vessel Code, 2007 Edition.

(11) American Society for Testing and Materials (ASTM) B32 - 08 Standard Specification for Solder Metal.

(12) ASTM A312 / A312M - 08 Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes.

(13) ASTM A403 / A403M - 07a Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings.

(14) ASTM D2464 - 06 Standard Specification for Threaded Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80.

(15) ASTM D2467 - 06 Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80.

(16) ASTM D2564 - 04e1 Standard Specification for Solvent Cements for Poly(Vinyl Chloride) (PVC) Plastic Piping Systems.

(17) ASTM D2855 - 96(2002) Standard Practice for Making Solvent-Cemented Joints with Poly(Vinyl Chloride) (PVC) Pipe and Fittings.

(18) ASTM F493 - 04 Standard Specification for Solvent Cements for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe and Fittings.

(19) American Welding Standards (AWS) D1.1 / D1.1M (2006), Structural Welding Code.

(20) AWS D10.4 (1986), Recommended Practices for Welding Austenitic Chromium-Nickel Stainless Steel Piping and Tubing.

(21) AWS D10.7M/D10.7 (2000) Guide for the Gas Shielded Arc Welding of Aluminum and Aluminum Alloy Pipe.

(22) AWS / ANSI B2.1 (2005) Specification for Welding Procedure and Performance Qualification.

(23) American Water Works Association (AWWA) C111 / A21.11-07 American National Standard for Rubber Gasket Joints for DuctileIron Pressure Pipe and Fittings.

(24) AWWA C115 / A21.15-05 Standard for Flanged Ductile- Iron Pipe with Ductile-Iron or Gray-Iron Threaded Flanges.

(25) AWWA C206-03, Standard for Field Welding of Steel Water Pipe Joints.

(26) AWWA C600-05, Standard for Installation of Ductile-Iron Water Mains and Their Appurtenances.

(27) AWWA C606-06, Standard for Grooved and Shouldered Type Joints.

(28) AWWA C651-05, Standard for Disinfecting Water Mains.

(29) AWWA M11 (2004), Steel Water Pipe: A Guide for Design and Installation, Fourth Edition.

(30) AWWA M23 (2002) PVC Pipe - Design and Installation.

(31) Chlorine Institute, Inc. The Chlorine Manual, 6th Edition (2000).

(32) Manufacturers Standardization Society (MSS) Standard Practice (SP)-43-1991(R2001) Wrought Stainless Steel Butt-Welding Fittings.

(33) National Fire Protection Association (NFPA) Standard No.13 (2007) Installation of Sprinkler Systems.

(34) NFPA Standard No.14 (2007) Standard for the Installation of Standpipe, Private Hydrants, and Hose Systems.

(35) NFPA Standard No. 54 (2006), National Fuel Gas Code.

(36) Underwriters Laboratories Incorporated (UL), Factory Mutual (FM) and other jurisdictional authorities, where applicable.

1.4 SUBMITTALS

The Contractor shall submit the following to the COR in accordance with the requirements and procedures specified in SPECIFICATION 01 33 00, Submittal Requirements, and in this Specification.

A. Shop Drawings: The Contractor shall submit for compliance-confirmation the following, as a minimum:

(1) Laying schedules and detailed layout drawings for all piping 3 inches in diameter or greater reflecting the Contractor’s construction schedule and installation methods. The laying schedules and layout drawings shall be referenced to the stationing and elevations shown on the Contract Drawings, and all layout drawings shall be prepared to scale. Each pipe joint, length, fitting and special shall be designated on the layout drawings and in the laying schedules. Pipe, fittings and specials delivered to the job site shall be marked with the same letter or number designation appearing on the layout drawings and in the laying schedules.

(2) Full details of pipe, fittings, specials, supports, and connections to existing pipes and structures, including dimensions, sizes, classes, etc.

(3) Typical joint and harnessing details.

(4) Thrust restraint system and details.

(5) Detailed description of pipe handling and installation methods. Copies of these descriptions shall be furnished to the pipe manufacturer for use in pipe design.

(6) Detailed descriptions of proposed field testing and disinfection including information and data pertaining to procedures and apparatus for testing and disinfection.

(7) Refer to SPECIFICATION 01 33 00, Submittal Requirements; and SPECIFICATION 40 00 50, General Piping Provisions.

B. Tests: Refer to testing of piping as specified herein.

C. Certificates: The Contractor shall submit certificates of compliance with referenced standards.

D. Record Drawings: During progress of the Work, the Contractor shall keep an up-to-date set of drawings showing field and shop drawing modifications. The drawings shall show all piping on plans and in sections, with all reference dimensions and elevations required for complete record drawings regardless whether the piping was shown on the Contract Drawings. The Contractor shall refer to SPECIFICATION 01 78 39, Project Record Documents; and SPECIFICATION 40 00 50, General Piping Provisions.

E. Manufacturer's Qualifications: The Contractor shall submit to the COR for compliance-confirmation, the Manufacturer’s Qualifications in accordance with Part 1.3 herein.

1.5 MEASUREMENT AND PAYMENT

The work performed by the Contractor under this Specification shall not be measured and paid for directly, but shall be considered to be included in the Lump Sum Bid for this Contract.

PART 2 – MATERIALS, EQUIPMENT, AND/OR PRODUCT

2.1 MATERIALS

Required pipe materials are shown on the Contract Drawings; refer to applicable Specifications for material specifications. For marking piping, refer to SPECIFICATION 40 00 94, Pipe Markers. The Contractor shall use containment piping for above-grade chemical piping outside of chemical containment areas. The Contractor shall use restrained joints for all exposed piping.

2.2 DELIVERY, STORAGE AND HANDLING

Delivery, storage and handling of materials, equipment and/or products shall be per the requirements of SPECIFICATION 01 69 00, Control of Materials and Products. The Contractor shall deliver materials to the site to ensure uninterrupted progress of the Work, and shall comply with manufacturer's recommendations for handling, storage and protection during the progress of the Work.

The Contractor shall furnish and install all equipment, labor, materials, appurtenances, specialty items and services not provided by the Contractor's manufacturers, suppliers, fabricators and/or subcontractors but required for complete and operable systems.

A. The Contractor shall refer to SPECIFICATION 40 00 50, General Piping Provisions.

B. The Contractor shall handle all pipe, fittings, specials and accessories carefully with compliance-confirmed handling devices. Do not drop or roll material off trucks. Do not otherwise drop, roll or skid piping.

C. The Contractor shall store pipes and fittings on heavy wood blocking or platforms so they are not in contact with the ground.

D. The Contractor shall unload pipe, fittings and specials opposite to or as close to the place where they are to be installed as is practical to avoid unnecessary handling. Keep pipe interiors completely free from dirt and foreign matter.

E. Materials cracked, gouged, chipped, dented or otherwise damaged will not be acceptable and shall be removed from the site immediately by the Contractor.

F. Thermoplastic pipe shall be stored by the Contractor so as to prevent sagging or bending.

G. Thermoplastic pipe, fittings and specials shall not be stored in direct sunlight.

H. Products cracked, gouged, chipped, dented or otherwise damaged will not be accepted or compliance-confirmed and shall be removed and replaced at the Contractor's expense, unless the product can be repaired in a manner acceptable to the manufacturer and COR. All repairs shall be at the Contractor's expense.

PART 3 – CONSTRUCTION OR EXECUTION METHOD

3.1 INSTALLATION

A. General:

(1) Install piping as shown, specified and in complete accordance with manufacturer's instructions and in conformance with referenced standards and compliance-confirmed shop drawings.

(2) Request instructions from COR before proceeding, if there is a conflict between the manufacturer's recommendations and the Contract Drawings or Specifications.

(3) Pipe, fittings and accessories that are cracked, damaged or with damaged linings will be rejected.

B. Manufacturer's Installation Specialist:

(1) The Contractor shall provide the services of a competent manufacturer's installation specialist when pipe installation begins for the following if the Contractor is not experienced in this type of work.

(2) Retain specialist on the job for a minimum of 8 hours and until competency of the pipe installation crew has been demonstrated to the satisfaction of the COR.

C. Piping:

(1) Install straight runs true to line and elevation.

(2) Install vertical pipe truly plumb in all directions.

(3) Install piping parallel or perpendicular to building walls. Piping at angles and 45 degree runs across corners will not be accepted unless specifically shown or compliance-confirmed.

(4) Install small diameter piping generally as shown when specific locations and elevations are not indicated. Locate such piping as required to avoid ducts, equipment, beams, etc.

(5) Install piping so as to leave all corridors, walkways, work areas, and like spaces unobstructed. Unless otherwise compliance-confirmed, provide a minimum headroom clearance under all piping of 7 feet 6 inches.

(6) Provide temporary caps or plugs over all pipe openings at the end of each days work, and when otherwise required or directed by COR.

(7) Cutting: Cut pipe from measurements taken at site, not from Contract Drawings.

(8) Install dielectric unions wherever dissimilar metals are connected except for bronze or brass valves in ferrous piping.

(9) Provide a union downstream of each valve with screwed or flanged connections.

(10) Provide screwed or flanged unions at each piece of equipment, where shown, and where necessary to install or dismantle piping.

(11) Additional Requirements for fiberglass reinforced plastic (FRP) and thermoplastic piping:

(a) Support all valves independently of the piping system.

(b) Utilize wide band supports as recommended by manufacturer and compliance-confirmed by COR to minimize localized stresses.

(c) Provide piping passing through walls with a sleeve of wearing material to prevent abrasion damage to piping.

(d) When anchors are required at locations other than equipment or tanks they shall be placed at elbows, valve locations and at bends in pipe line.

(e) Spacing of supports shall be in accordance with the manufacturer's published values at the maximum design operating temperature of the pipe.

(f) Use "U" clamps with wide band circumferential contact. Avoid all pressure contact with piping.

(g) Use guides on long runs of piping to maintain alignment and reduce chance of elastic failure of pipe. Space guides as recommended by manufacturer.

(h) Use bellows with low axial force to take up pipe expansion. Provide anchors to restrain the expansion joint. Use of bellows joints shall be kept to a minimum. Flexible connectors may be used to absorb thermal movement when compliance-confirmed by COR.

(12) Installation of all pipe, fittings, valves, specials and appurtenances shall be subject to the review and/or compliance-confirmation of the COR.

(13) All piping shall be inspected by the COR prior to installation. COR'S inspection will not relieve the Contractor or manufacturer from responsibility for damaged products.

(14) Take field measurements where required prior to installation to ensure proper fitting of Work.

(15) Interior of all piping and mating surfaces shall be inspected and all dirt, gravel, sand, debris or other foreign material shall be completely removed from the interior and mating surfaces before installation. Measures shall be taken to maintain the interior of all piping clean until acceptance of the completed Work. Care shall be taken to prevent foreign matter from getting on mating surfaces. Mating surfaces shall be wiped clean immediately before piping is installed.

(16) All joints shall be made in the presence of the COR or his duly authorized representative, except as otherwise compliance-confirmed.

(17) Protective linings and coatings shall be touched up prior to installation, where required.

(18) Install piping accurately to line and elevation shown, specified or directed, except as otherwise compliance-confirmed by the COR. Accurate means of determining and checking the line and elevation shall be used, which shall be subject to the compliance-confirmation of the COR. Any modifications to the Contract Drawings or these Specifications to suit the pipe manufacturer's standard must be compliance-confirmed by the COR. Remove and reinstall piping that is incorrectly installed at the Contractor’s expense.

(19) Where unforeseen conditions will not permit the installation of piping as shown or specified, no piping shall be installed without compliance-confirmation of the COR. Do not modify structures or facilities without compliance-confirmation of the COR.

(20) Field painting shall be accomplished after the joints are made.

(21) All gravity lines shall pitch uniformly at a minimum of 1/4-inch per foot horizontal, unless otherwise shown, specified or compliance-confirmed.

(22) Piping shall be rotated as required to place outlets in proper position.

(23) Blind flanges and cleanouts shall be provided at locations shown on the Contract Drawings, specified or required.

(24) Whenever piping installation is not actively in progress, the open ends of the piping shall be closed by a temporary plug or cap to prevent foreign matter from entering the piping.

(25) Provide provisions to permit bleeding air at high points and draining condensate at low points in air lines.

(26) Nonmetallic insect screens shall be furnished and installed on vent pipes.

(27) Conform to SPECIFICATION 40 00 50, General Piping Provisions, for maximum support spacing for piping.

(28) Install piping through walls, floors, partitions and roofs using wall pipe fittings, floor pipe fittings and pipe sleeves, as shown on the Contract Drawings or directed by the COR.

(29) Where small diameter piping is to be connected to large diameter piping, provide taps in accordance with the pipe manufacturer's recommendations and requirements, unless otherwise shown, specified or directed.

(30) Allow clearances for expansion and contraction of piping.

(31) Make up all piping to meet the requirements of equipment supplied.

(32) Except for copper pipe, flanged or threaded joints shall be used at all equipment and valve connections, except as otherwise shown, specified or directed by the COR.

(33) Where shown, specified or required, flexible piping shall be provided where piping systems connect to equipment. Flexible piping shall be of the same nominal size and strength as the piping system. All flexible piping shall have a minimum line length of 18 inches.

(34) Unless otherwise shown or specified, install a shutoff valve constructed of materials suitable for the intended service on every lateral and pipe connection to equipment, except drain and vent lines.

(35) Use mechanical link-type seals suitable for 20 psig working pressure as specified in SPECIFICATION 40 00 92, Wall Pipes, Floor Pipes and Pipe Sleeves, to seal annular space between pipe sleeve and pipe where shown or required.

(36) Provide and install escutcheon plates at all pipe penetrations in exposed interior areas, unless otherwise shown or specified.

(37) Care shall be taken not to leave tool marks or abrasions on plated, polished or soft metal piping.

(38) Concrete or metallic pipe supports conforming to the requirements of Division 3 and SPECIFICATION 40 00 50, General Piping Provisions, respectively, shall be provided under piping where shown on the Contract Drawings or as otherwise required.

(39) All piping shall be plugged watertight with a suitable cap or plug securely fastened to the end of the piping at all contract interfaces.

D. Joints:

(1) General:

(a) Make joints in accordance with the pipe manufacturer's recommendations and the requirements below.

(b) Cut piping accurately and squarely and install without forcing or springing.

(c) Ream out all pipes and tubing to full inside diameter after cutting. Remove all sharp edges on end cuts.

(d) Remove all cuttings and foreign matter from the inside of pipe and tubing before installation. Thoroughly clean all pipe, fittings, valves, specials, and accessories before installing.

(e) Flame cutting will not be allowed.

(2) Flanged Joints:

(a) Assemble flanged joints using 1/8-inch ring-type gaskets for raised face flanges. Use full face gaskets for flat face flanges unless otherwise compliance-confirmed by COR. Gaskets shall be suitable for the service intended in accordance with the manufacturer's ratings and instructions. Gaskets shall be properly centered.

(b) Bolts shall be tightened in a sequence which will insure equal distribution of bolt loads.

(c) The length of bolts shall be uniform, and they shall not project beyond the nut more than 1/4-inch or fall short of the nut when fully taken up. The ends of bolts shall be machine cut so as to be neatly rounded. No washers shall be used.

(d) Bolt threads and gasket faces for flanged joints shall be lubricated prior to assembly.

(e) Alternately tighten bolts 180 degrees apart to compress the gasket evenly.

(3) Thermoplastic Pipe (PVC, chlorinated polyvinyl chloride (CPVC) and polyvinylidene difluoride (PVDF)) Joints:

(a) Socket Weld Joints:

1. General: The procedure below is to be used as a guide. However, the compliance-confirmed pipe manufacturer's recommended procedures shall be followed unless the procedures listed below are more stringent.

2. Cut pipe square with mitre box or plastic tube cutter.

3. Chamfer pipe end to a 10 to 15 degree angle.

4. Clean and dry socket of all dirt, moisture and grease.

5. Check dry fit of pipe in fitting. Pipe should enter socket about 1/3 to 3/4 depth.

6. Dissolve inside socket surface by brushing with primer. Use brush 1/2 the size of pipe diameter. Use a scrubbing motion to assure penetration. Repeat application as necessary.

7. Dissolve surface of male end of pipe to be inserted into socket to depth of fitting socket by brushing on liberal coat of primer. Be sure entire surface is well dissolved.

8. Brush inside socket with primer one more time, then without delay apply proper cement liberally to male end of pipe. The amount of cement should be more than sufficient to fill any gap.

9. Apply proper cement lightly to inside of socket. Keep excess cement out of socket to prevent solvent damage to pipe. Apply a second coat of cement to the pipe end.

10. While both inside socket and outside surface of male end of pipe are soft and wet with cement, forcefully bottom the male end of pipe into socket, giving the male a one-quarter turn. The pipe must go to the bottom of the socket. Hold joint together until both surfaces are firmly gripped (minimum 30 seconds).

11. After assembly, wipe excess cement from the pipe at the end of the fitting socket. A properly made joint will normally show a bead around its entire perimeter. Any gaps at this point may indicate a defective assembly job, due to insufficient cement, or use of light bodied cement on large diameters where heavy bodied cement should have been used. Reassembly will be required if assembly is determined to be defective.

12. Do not disturb joint until setup of the cement occurs. Refer to manufacturer's solvent cement set time schedule for setup times at various ambient temperatures.

(b) Threaded Joints: The Contractor shall cut pipe square and smooth and remove burrs or raised edges with a knife or file. Hold pipe firmly in a pipe vise. Protect pipe at the point of grip by inserting a rubber sheet or other material between the pipe and vise. Thread pipe in accordance with the pipe manufacturer's recommendations. Brush threads clean of chips and ribbons. Then starting with the second full thread, and continuing over the thread length, wrap TFE (Teflon) thread tape in the direction of the threads. Overlap each wrap by one half the width of the tape. Screw the fitting or coupling onto the pipe and tighten by hand. Using a strap wrench only, further tighten the connection an additional one to two threads past tightness.

(4) Split Type Grooved or Shouldered End Couplings: Couplings, fittings, valves and pipe shall be assembled in accordance with the manufacturer's instructions.

(a) Pipe: The outside surface of pipe between the groove and pipe end must be smooth and free from deep pits or swells to provide a leaktight seal for the gasket. All rust, loose scale, oil, grease and dirt shall be removed. Peened surfaces may require correction in order to provide a leaktight gasket seal.

(b) Gasket: All gaskets shall be of the central cavity pressure-responsive design. Gasket style and elastomeric material (grade) shall be checked to be certain gasket supplied is suited for the intended service.

(c) Lubrication: Lubrication shall be used for proper coupling and/or fitting assembly as follows:

1. Thorough lubrication of the gasket exterior including the lips and/or pipe ends and housing interiors, is essential to prevent pinching the gasket.

2. Use manufacturer's recommended lubrication for installation.

(5) Copper Tubing Joints:

(a) Assemble copper tubing with soldered joints. Solder shall be 955 tinantimony conforming to ASTM B32.

(b) Ream or file pipe to remove burrs.

(c) Clean and polish contact surfaces of joints.

(d) Apply flux to both male and female ends.

(e) Insert end of tube into full depth of fitting socket.

(f) Heat joint evenly.

(g) Form continuous solder bead around entire circumference of joint.

(h) Runs shall contain unions at connections to equipment and at reasonable distances along the lengths of runs to permit convenient disassembly of piping and removal of equipment.

E. Installing Valves and Accessories:

(1) Provide supports for valves, flow meters and other heavy items as shown or required.

(2) Install floor stands as shown and as recommended by the manufacturer.

(3) Provide lateral restraints for extension bonnets and extension stems as shown and as recommended by the manufacturer.

(4) Provide steel sleeves where operating stems pass through floor. Extend sleeves 2 inches above floor.

(5) Position valve operators as shown. When the position is not shown, install the valve so that it can be conveniently operated and as compliance-confirmed by COR. Avoid placing operators at angles to the floors or walls.

(6) Position flow measuring devices in pipe lines so that they have the amount of straight upstream and down stream runs recommended by the manufacturer, unless specific location dimensions are shown. Position swing check valves so that they do not conflict with the discs of butterfly valves, or other equipment.

F. Unions:

(1) Install dielectric unions wherever dissimilar metals are connected except for bronze or brass valves in ferrous piping.

(2) Provide a union downstream of each valve with screwed connections.

(3) Provide screwed or flanged unions at each piece of equipment, where shown, and where necessary to install or dismantle piping.

(4) Install all pipelines with frequently placed unions to permit easy disassembly where applicable.

(1) Installation and assembly of couplings shall conform to the coupling manufacturer's recommendations.

(2) Prior to assembly, the last 8 inches of the outside of each pipe end shall be cleaned thoroughly with a wire brush to remove foreign matter.

(3) Following cleaning, lubricant shall be applied to each joint end.

3.2 THRUST RESTRAINT

The Contractor shall provide thrust restraint on all pressure piping systems.

A. Thrust restraint shall be accomplished by means of restrained pipe joints. Thrust restraints shall be designed for the axial thrust exerted by the test pressure specified in the "Test Pressure Schedule for Exposed Piping," included at the end of this Specification.

B. Restrained Pipe Joints:

(1) Pipe joints shall be restrained by means suitable for the type of pipe being installed.

(2) Install restraint joints as shown, specified, or required and as recommended by manufacturer. Assembly shall be in strict accordance with manufacturer's recommendations.

(3) Provide concrete and metal cradles, collars, kickers, and blocks as shown or otherwise compliance-confirmed by COR.

(4) Provide restraints, supports, collars and blocks of sufficient size and weight to prevent expansion and contraction forces from reaching valves, pumps or equipment.

(5) All joints on ductile iron pipe, stainless steel and steel pipe, copper pipe, fiberglass reinforced plastic and thermoplastic pipe shall be restrained to provide for thrust protection along the entire length of each pipe, fitting or special including connections to valves, equipment and wall fittings.

3.3 PAINTING

The Contractor shall provide painting shall as specified in SPECIFICATION 09 91 00, Painting.

3.4 TESTING OF PIPING

A. Field Testing:

(1) Test all piping as specified below unless otherwise authorized by COR.

(2) Notify COR 48 hours prior to the commencement of testing.

(3) Provide all testing apparatus including pumps, hoses, gages, and fittings.

(4) Pipelines shall hold the specified test pressure for two hours unless otherwise specified.

(5) Repair and retest pipelines which fail to hold specified test pressures or which exceed the allowable leakage rate.

(6) Test pressures required are at the lowest elevation of the pipeline section being tested, unless otherwise specified.

(7) Conduct all tests in the presence of the COR. Repeat tests in the presence of local authorities having jurisdiction, if required.

(8) The Contractor shall make all arrangements for and bear all expenses for providing all potable water for testing. The source of the water and point of introduction of water, required for the making of tests, shall be subject to compliance-confirmation of the COR.

(9) All costs for tests shall be included in the prices bid.

B. Factory Testing:

(1) Notify COR of the time and place one week prior to the commencement of testing.

(2) All costs for tests shall be included in the Contractor's bid.

(3) Pipe test shall be in accordance with the individual pipe specifications.

C. Pressure Test Procedure:

(1) Insure that all supports and restraint protection are securely in place.

(2) Fill section to be tested slowly with water and expel all air. Install cocks, if necessary, to ensure removal of air.

(3) Test only one section of pipe at a time.

(4) Apply specified test pressure required for 2 hours and observe pressure gage. Check carefully for leaks while test pressure is being maintained.

(5) Thermoplastic and FRP pipe may be tested with air.

D. Exposed Piping Schedule (see table below).

3.5 DISPOSAL OF WATER

The Contractor shall provide suitable means for disposal of test, disinfection and flushing water so that no damage results to facilities or waterways. The means for disposal of test, disinfection and flushing water shall be subject to the compliance-confirmation of COR, local governing authorities and regulatory agencies. All test and flushing water used in all piping systems shall be disposed to the Tank Drain System. The Contractor shall be responsible for any damage caused by his water disposal operations.

3.6 CLEANING AND DISINFECTION

A. Cleaning:

(1) Thoroughly clean all piping and flush prior to placing in service in a manner compliance-confirmed by COR.

(2) Piping 24 inches in diameter and larger shall be inspected from inside and all debris, dirt and foreign matter removed.

(3) If piping which requires disinfection has not been kept clean during storage or installation, the Contractor shall swab each section individually with a five percent (5%) hypochlorite solution, to ensure clean piping.

B. Disinfection:

(1) Disinfect all potable and fire water piping.

(2) A suggested procedure for accomplishing disinfection is specified below. Other procedures will be considered for compliance-confirmation by the COR.

(a) Thoroughly flush piping prior to disinfection with water. For pipelines 24 inches in diameter and larger, pipelines shall be manually cleaned, carefully removing all sweeping, dirt and debris prior to disinfection.

INFRASTRUCTURE IMPROVEMENTS FOR THE

(b) Conform to procedures described in AWWA C651. Continuous feed method of disinfecting shall be used unless alternative methods are acceptable to COR.

EXPOSED PIPING SCHEDULE

a) Gravity

b) Pump Discharge

INFRASTRUCTURE IMPROVEMENTS FOR THE

(3) The Contractor shall provide water for all initial flushing, testing and chlorination. The Contractor shall provide all temporary piping, hose, valves, appurtenances and services required.

(4) Chlorine shall be supplied by the Contractor.

(5) Bacteriologic tests will be performed by Government. A certified laboratory report will be available to the Contractor, if requested. If tests fail, the Contractor shall assist the COR as necessary to achieve required bacteriologic test results.

(6) Chlorine concentration in the water entering the piping shall be between 50 and 100 parts per million, such that a minimum residual concentration of 25 milligrams per liter will be left after a 24hour retention period. Care shall be taken to insure disinfection of the piping in all its parts. The operation shall be repeated as necessary to provide complete disinfection.

(7) After the required retention period, the heavily chlorinated water shall be flushed to the Tank Drain System.

3.7 IDENTIFICATION OF PIPING

The Contractor shall provide pipe identification markers and arrows in accordance with SPECIFICATION 40 00 94, Pipe Markers.

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