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SUB WATER DEPARTMENTSTANDARD CONSTRUCTION SPECIFICATIONSTABLE OF CONTENTSSECTION 33 13 00PIPELINE TESTING AND DISINFECTIONPART 1GENERAL . 21.1Description . 21.2Reference Specifications, Codes, and Standards . 21.3Contractor Submittals . 3PART 22.1PART 3PRODUCTS . 3Equipment . 3EXECUTION . 43.1Filling Mains . 43.2Hydrostatic Testing of Water Mains . 43.3Flushing . 63.4Disinfection of Water Mains . 73.5Bacteriological Testing . 93.6Disinfection of Water Main End Connections and Tie-Ins . 103.7Tracer Wire Conductivity Testing . 10Standard Specifications - ONLINEPipeline Testing and Disinfection33 13 00 - 1

PART 11.11.2GENERALDescriptionA.This section covers field pressure testing, disinfection and purity testing ofpotable water systems piping, fittings, and valves and field pressure testing ofsewage force mains. All piping shall be flushed and hydrostatically pressureand leak tested. Defective items revealed by the testing procedures shall beremoved and replaced or otherwise corrected as directed by the Engineer. Allcosts for labor and materials necessary to conduct the flushing, testing anddisinfecting procedures specified herein, and all costs of labor and materialsrequired to remedy defective items shall be borne by the Contractor.B.Contractor shall provide coordination and scheduling required for SUB andEngineer to witness and provide necessary labor for operating SUB’s existingsystem during hydrostatic testing and disinfecting procedures. Contractorshall not operate any part of the existing water.C.The Contractor shall perform flushing and testing of all pipelines andappurtenant piping for water and disinfection of all pipelines and appurtenantpiping for potable water, complete, including conveyance of test water to pointof use and all disposal thereof, all in accordance with the requirements of theContract Documents.Reference Specifications, Codes, and StandardsCodes and Standards: Comply with the provisions of the latest edition of thefollowing codes, standards and specifications, except as otherwise shown andspecified:ANSI/AWWA B300 HypochloritesANSI/AWWA B301 Liquid ChlorineANSI/AWWA C651 Disinfecting Water MainsANSI/AWWA C600 Installation of Ductile Iron Water Mains and TheirAppurtenancesANSI/AWWA C605 Underground Installation of PVC Pressure Pipe and Fittings forWaterASTM F 2164 – 02 Standard Practice for Field Leak Testing of Polyethylene (PE)Pressure Piping Systems Using Hydrostatic PressureStandard Specifications - ONLINEPipeline Testing and Disinfection33 13 00 - 2

1.3Contractor SubmittalsA required pipeline testing and disinfection plan shall be submitted by the Contractorfor review and approval by SUB Water division a minimum of one month beforetesting is to start. High dosage (10 ppm and above) chlorine readings, for initialdisinfection, shall be able to be clearly ascertained to a tolerance of 5 ppm. Chlorinedosage levels under 10 ppm, for residual readings, shall be able to be clearlyascertained to a tolerance of 0.1 ppm. As a minimum, the Contractor’s pipelinetesting and disinfection plan shall include the following:A.B.C.D.E.F.G.H.I.J.PART 22.1Testing schedule.Proposed water source for testingProposed equipment and chemicals, including chlorine dosage testingequipment.Proposed plan for water conveyance including flow rates.Proposed plan for water control.Proposed plan for water disposal including flow rates.Proposed measures to be incorporated in the project to minimize erosion whiledischarging water from the pipeline.Proposed plan for disinfection, including dosage calculations.Proposed plan for dechlorination of flushing water and superchlorinateddisinfection water including discharge points and discharge rates.Proposed plan for testing chlorine levels throughout the length of the pipelineincluding test locations.PRODUCTSEquipmentA.All test equipment, chemicals for chlorination, temporary valves, bulkheads,or other water control equipment and materials shall be determined andfurnished by the Contractor subject to the Engineer’s review. No materialsshall be used which would be injurious to the construction or its futurefunctions.B.SUB shall furnish pressure gauges for testing. The Contractor shall furnish thefollowing equipment and materials for the testing:Amount21DescriptionGraduated containers approved by the EngineerHydraulic pump approved by the Engineer with hoses, valves and fittingsas needed and required for the testing and disinfection of the facilities.Standard Specifications - ONLINEPipeline Testing and Disinfection33 13 00 - 3

C.Chlorine for disinfection shall be in the form of liquid chlorine or sodiumhypochlorite solution.D.Sodium hypochlorite and calcium hypochlorite shall be in accordance with therequirements of ANSI/AWWA B300. Liquid chlorine shall be in accordancewith the requirements of ANSI/AWWA B301.All temporary thrust restraint and equipment and facilities required forhydrostatic testing will be considered incidental.E.PART 33.13.2EXECUTIONFilling MainsA.The Contractor shall make all necessary provisions for conveying water to thepoints of use and for the proper disposal of test water.B.Water mains shall be filled under the direction of the Engineer in such amanner as to prevent excessive pressure reductions in the existing main andwater hammer.Hydrostatic Testing of Water MainsGeneral:A.No section of the pipeline shall be hydrostatically tested until all field-placedconcrete or mortar has attained full strength and all heat fusion joints arecompletely cooled. At the Contractor’s option, early strength concrete may beused when the full strength requirements conflict with schedule requirements.All such early applications shall be approved by the Engineer prior to eachinstallation.B.Hydrostatic pressure tests shall be made on any valved section of all newlylaid main and service pipe in the presence of the Engineer, unless otherwisedirected by the Engineer. Reference specifications, AWWA C600 Section 5.2,Hydrostatic Testing, AWWA C605 Section 10.3, and ASTM F 2164 – 02,Standard Practice for Field Leak Testing of Polyethylene (PE) Pressure PipingSystems Using Hydrostatic Pressure. All entrained air shall be expelled fromthe line prior to elevating the internal pressure to the specified testpressure. Flow velocities during filling should not exceed the capacities of airrelease devices or other openings used to release entrapped air. The testpressure shall be 150 psi calculated for the point of highest elevation, but shallnot exceed 200 psi at any point. The test pressure shall be applied andmaintained for a two-hour duration unless otherwise specified by the Engineer.The allowable leakage shall not to exceed value as per Paragraph D below.Standard Specifications - ONLINEPipeline Testing and Disinfection33 13 00 - 4

C.Testing shall be against closed hydrants with hydrant valves open. In addition,the test shall include the service installation(s) against the closed angle metervalve with the corporation stop open.D.If the test reveals any defects, leakage in excess of the allowable, or failure,the Contractor shall furnish all labor, equipment, and materials required tolocate and make the necessary repairs. The testing of the line (and repairing ofdefects, excessive leakage, and failures) shall be repeated until a testsatisfactory to the Engineer has been achieved. All costs for locating,repairing, and re-testing shall be borne by the Contractor.Ductile Iron and PVC pipe testing allowance and procedure:E.Testing allowance shall be defined as the maximum quantity of makeup waterthat is added into the pipeline undergoing hydrostatic pressure testing, or anyvalves section thereof, in order to maintain pressure within 5 psi of thespecified test pressure (after the pipeline has been filled with water and the airhas been expelled). No pipe installation will be accepted if the quantity ofmakeup water is greater than that determined by the following formula:In inch-pound units,L SD 𝑃148,000Where:L testing allowance (makeup water), in gallons per hourS length of pipe tested, in feetD nominal diameter of pipe, in inchesP average test pressure during the hydrostatic test, in pounds persquare inch (gauge).The allowable leakage at various pressures for pipe of various diameters isshown in Table 6 below from AWWA C600Standard Specifications - ONLINEPipeline Testing and Disinfection33 13 00 - 5

AWWA C600Allowable Leakage per 1000 ft (305 m) of Pipeline*--gphTABLE 6NOMINAL PIPE DIAMETER -- (inches)Avg.TestPressurepsi (bar)3468101214161820243036424854200 873.444.014.595.16175 683.223.754.294.83150 482.983.483.974.47125 72.723.173.634.08100 32.432.843.243.65*If the pipeline under test contains sections of various diameters, the testing allowance will be thesum of the testing allowance for each size.F.The test pressure shall be applied and maintained for a two (2) hour durationunless otherwise specified by the Engineer. The testing allowance shall be perparagraph E Above. During the test period, operate the pump as required tomaintain pressure in the pipe within 5 psi of the specified test pressure at alltimes. At the end of test period, operate the pump until the specifiedmaximum test pressure is again obtained. The pump suction shall be in agraduated barrel, metered, or similar device so that the amount of makeupwater required to restore the test pressure may be accurately measured.Polyethylene pipe testing allowance and procedure:G.Temperature equalization: Allow the water and pipe in the test section toequalize to a common temperature.Test Phase: Add makeup water as necessary to maintain the maximum testpressure for four (4) hours. After maintaining the maximum test pressure forfour (4) hours, reduce the maximum test pressure by ten (10) psi and monitorthe pressure continuously for one (1) hour.Pass/Fail Criteria: If the pressure during the test phase remains steady (within5% of the maximum test pressure) for the one (1) hour test phase period, apassing test is indicated.3.3FlushingA.Prior to chlorination, the main shall receive a complete flushing through allhydrants and blow-offs such that a velocity of at least 2.5 feet per second isdeveloped in the main. If the required velocity cannot be achieved, a minimumStandard Specifications - ONLINEPipeline Testing and Disinfection33 13 00 - 6

of three (3) pipe volumes of water shall be turned over in the lines beingtested. The flushing shall be accomplished during prearranged times underdirection and supervision of the Engineer. If sufficient outlets are notavailable, a tap shall be provided large enough to develop the required velocityin the main and to allow the removal of foam swabbing "pigs". (see Table IIbelow)B.All valves shall be operated through their extreme open and closed positionsduring flushing. Each hydrant shall be inspected after flushing to see that theentire valve operating mechanism is in good, working condition.C.Flushing water onto the street subgrade shall not be allowed at any time.Provisions for the dechlorination and disposal of the water onto areas where nodamage will be caused shall be made by the Contractor prior to any flushingoperations. All flushing shall meet current regulatory requirements. Rate ofoperation of all valves and hydrants shall be done in a manner that avoidswater hammer damage to the existing system and the improvements.TABLE IIREQUIRED OPENINGS FOR 2.5 fps FLUSHING VELOCITY(40 psi Pressure)3.4PIPE SIZE(inch)FLOW(gpm)ORIFICE SIZE(inch)HYDRANT OUTLET NOZZLES410015/16One 2-1/262201-3/8One 2-1/283901-7/8One 2-1/2106102-5/16One 2-1/2128802-13/16One 2-1/21412003-1/4Two 2-1/21615653-5/8Two 2-1/21819084-3/16Two 2-1/22024504-5/82435105-9/163055007Three 2-1/2Four 2-1/2 orOne 4-1/2 and One 2-1/2Five 2-1/2 or One 4-1/2 and Two 21/2 or Two 4-1/2Amount/Diameter (inches)Disinfection of Water MainsA.After testing and repairing where necessary, all potable water systems shall bethoroughly flushed, cleaned, and disinfected by the Contractor in accordancewith the latest version of AWWA C651.Standard Specifications - ONLINEPipeline Testing and Disinfection33 13 00 - 7

B.Before sterilizing, flush all foreign matter from the pipeline. The Contractor isto provide, at no additional cost to SUB, hoses, temporary pipes, ditches, etc.,as required to dispose of flushing water without damage to adjacent properties.Flushing water discharged to any public waters in the State of Oregon shall