ASTM_F_3497-21.pdf

Designation:F349721Standard Test Method forEvaluating the Oxidative Resistance of Polypropylene(PP)Piping Systems to Hot Chlorinated Water1This standard is issued under the fixed designation F3497;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method describes the general requirements forevaluating the long-term,chlorinated water,oxidative resis-tance of polypropylene(PP)piping produced in accordancewith Specification F2389 used in hot-and-cold water distribu-tion systems by exposure to hot,chlorinated water.This testmethod outlines the requirements of a pressurized flow-throughtest system,typical test pressures,test-fluid characteristics,failure type,and data analysis.NOTE1Other known disinfecting systems(chlorine dioxide,ozone,and chloramines)are also used for protection of potable water.Free-chlorine is the most common disinfectant in use today.A PPI researchproject examined the relative aggressiveness of free chlorine and chloram-ines on PEX pipes,both at the same 4.0 ppm concentration and the sametest temperatures.The results of the testing showed pipe failure timesapproximately 40%longer when tested with chloramines compared totesting with free chlorine,at the tested conditions.Based on these results,the data suggests that chloramines are less aggressive than free chlorine toPEX pipes.This note is provided for information regarding testingdifferent disinfecting systems on PEX tubing using Test Method F2023.The PPI research project did not include testing of polypropylene piping.NOTE2This test method is based on Test Method F2023 and resultsfrom this method can be used for direct comparison with previous resultson PP piping materials tested in accordance with Test Method F2023.1.2 This test method is applicable to PP piping systems usedfor transport of potable water containing free-chlorine fordisinfecting purposes.The oxidizing potential of the test-fluidspecified in this test method exceeds that typically found inpotable water systems across the United States.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard1.4 The following precautionary caveat pertains only to thetest method portion,Section 12,of this specification.Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety,health,andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsF412 Terminology Relating to Plastic Piping SystemsF2023 Test Method for Evaluating the Oxidative Resistanceof Crosslinked Polyethylene(PEX)Pipe,Tubing andSystems to Hot Chlorinated WaterF2389 Specification for Pressure-rated Polypropylene(PP)Piping Systems2.2 ISO Standards:3ISO 9080 Thermoplastic Pipe for Transport of FluidsMethods of Extrapolation of Hydrostatic Stress RuptureData to Determine the Long Term Strength of Thermo-plastic PipeISO 13760 Plastic Pipe for the Conveyance of Fluids UnderPressureMiners RuleCalculation Method for Cumu-lative Damage2.3 American Water Works Association(AWWA)Docu-ment:41996 WATER:STATS Survey1This test method is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.40 on TestMethods.Current edition approved Dec.15,2021.Published January 2022.DOI:10.1520/E3497212For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from International Organization for Standardization(ISO),ISOCentral Secretariat,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,https:/www.iso.org.4Available from American Water Works Association(AWWA),6666 W.QuincyAve.,Denver,CO 80235,http:/www.awwa.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization