ASME B31G-2023.docx

Manua1.forDeterminingtheRemainingStrengthofCorrodedPipe1.inesSupp1.ementtoASMEB31CodeforPressurePipingANAMERICANNATIONA1.STANDARDManua1.forDeterminingtheRemainingStrengthofCorrodedPipe1.inesSupp1.ementtoASMEB31CodeforPressurePipingANAMERICANNATIONA1.STANDARDTwoParkAvenueNewYork,NY10016USADateof1.»u«ncc:October312023ThenextCdtionofthisManua1.isschedUcdforpub1.icationh2026ThisManua1.wasdeve1.opedunderproceduresaccreditedasmceongthecritcaforAZnCneanNatiOMStandards.ThestandardscommitteethatapprovedtheManua1.wasba1.ancedtoensurethatndvduakfromcompetentandconcernedinterestshadanOpportunitytoparticipate.IheManua1.wasmadevaiab1.eforpub1.icreviewandcomment,whichprovidedanopportunityforaddtia1.pub1.icinputfromindustry,acadcmafregu1.atoryagencies,andthepuU*c-at-1.arge.ASMEdoesnot"approve/-ccrf"rate/or"endone"anyitem,consucooaproprietarydevice,oractivity.ASMEdoesttakeanypositionwithrespecttotheva1.iditydJnVpotentrightsassertedinconnectionwithanitems11emionednthisdocument,anddocsnotundertaketoinsureanyoneUD1.izingastandardagainstIBbi1.itforinfringementofanyapp1.icab1.e1.etterspatent,nordoesASMEassumeanysuch1.iabi1.rty.Usersofacodeorsta11dardarcexpress1.yad/isedthatdetcr11Mnatooftheva1.idityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentire1.ytheirownresponsibi1.ity.Parbapationbyfedera1.agencyrepcWentabvesorpersonsaffi1.iatedwithindustryisnottobeinterpretedagovernmentorindustryendorsementofthisManua1.ASMEacceptsresponsibi1.ityforon1.ythoseInterpretationsofthisdocumentissued1.accordancewiththeestab1.ishedASMEproceduresandpo1.icies,whichprec1.udestheissuanceofinterpretatiombyindividua1.s.Theendnotesandpreamb1.einthisdocument(ifany)arcpartofthisAmericanNationa1.Standard.ASMECo1.1.ectiveMtm1.xrfihipMWIIASME*andIbe>boveASMC*mbo1.4rerecbteredtridemjrho<TheAmernSocietyo<Mechjrice1.E11cr<jer5.Sop4rtof卜bdocumentEJYbereproducedinaryform,Ganff1.ffctfonicretrev41.symOfo<herww,withoutth®priorwrittenPerTnMOnofth。pub1.isher.ThMIefICMSMtyofMechfIcXEngineersTwoPartAvenue.MWYork.KY116990CopyrightO2023byTHEAMERICANSoanYOfMCCHANCA1.1.NGN(XRSA1.rghtreservedPrintedinUSACONTENTSForewordvCommrttecRosterviCorrespondenceWiththeB31CommitteeviiSummaryofChangesbe1 Introduction12 Eva1.uationMethods53 Tab1.esofA1.1.owab1.e1.engthofCorrosion8NonmandatoiyAppendixASamp1.eCa1.cu1.ations64Figures1.12- 1CorrosionPitInteractionDistancesS1.13- 1He1.ica1.1.yOrientedCorrosionPattern62.1-1CorrosionParametersUsedinAna1.ysis6-2-1.PittingArrangementforExamp1.eProbiem65A-2-2CrossSectionofPittingforExamp1.eProb1.em65Tab1.es31Va1.uesof1.forPipeSizesNNPS2andCNPS6931MVa1.uesof1.forPipeSizes60mmand<168mmOD93-2Vaiuwo(1.forPipeSixesNPS6and<NPS10103-2MVa1.uesof1.forPipeSizes168mmand<273mmOB113-3Va1.uesof1.forPipeSizesNNPS10andVNPS161233MVa1.uesof1.forPipeSizes273mmand<406mmOD133-4Va1.uesof1.forPipeSizesNPS16and<NI*S20143-4MVa1.uesof1.forPipeSizes406mmand<S08mmOD163.5Va1.uesof1.forPipeSizesNPS20and<NPS24183-SMVa1.uesof1.forPipeSizes2三0mmand<610mmOB2036Va1.uesof1.forPipeSizesNPS24and<NPS302236MVa1.uesof1.forPipeSizes610mmand<762mmOD243-7Va1.uesof1.forPipeSizesNPS30and<NPS36263-7MVa1.uesof1.forPipeSizes762mmand<914mmOB283-8Va1.uesof1.forRpcSizesNPS36and<NPS423038MVa1.uesof1.forPipeSizes914mmand<1066nun0.D323-9Va1.uesof1.forPipeSUesNPS42and<NPS48M39MVa1.uesof1.forPipeSizes1066nunand<1219mm0.D383-10Va1.uesof1.forPipeSizesZNPS48and<NPSS242310MVa1.uesof1.forPipeSizes1219mmand<1320mm0.D4S3-11Va1.uesof1.forPipeSizesNPS52and<NPS56483-1IMVa1.uerof1.forPipeSizes21320mmand<1422mm0.DS23-12Va1.uesof1.forPipeSzesNPSS6ThroughNPS60S63-12MVa1.uesof1.forPipeSizes2!422mmThrough1524mmOB60A-4-1Examp1.eMeU1.1.ossCa1.cu1.ationParameters66A-6-1.ComparisonofExamp1.es4and5Meta1.1.ossCa1.cu1.ationParameters67FOREWORDIthasbeenrecognizedwithinthepipe1.ineIndustrythatsomesectionsofhigh-pressurepIpe1.1.neparticu1.ar1.ythosewithk>ngservicehistories,mayexperiencecorrosion.Ithasahobeenrecognized,throughtheoretica1.ana1."i5,scientificresearchandtestIng.andmdustryoperatingexpcrience.thatsomeamountofmea1.Iossduetocorrask)ncanbeto1.eratedwithoutimpairingtheabi1.ityofthepipe1.inetooperatesafe1.y.In1984,theAmericanSodecyofMechan1.a1.Engineers(SME)pub1.ishedthefirsteditionoftheSMEB31GManua1.forDeterminingtheRemainingStrengthofCorrodedPipe1.ines.ASMEB3IGprovidedpipe1.ineoperatorswithsimp1.ifiedeva1.uationmethodbasedontheresu1.tsOfana1.ysisandtests.Theapp1.icationofASMEB31Ghasenab1.edpipe1.ineoperatorstore1.iab1.ydeterminesafeoperatingpressure1.eve1.sforpipeaffectedbycorrosion,andtodeterminewhetherrepairsarenecewaryinordertocontinueoperatingsafe1.y.ASMEB31GcontinuedtobereissuedbyASMEwithon1.yminorrevisionsovertime,a1.thoughothercorrosioneva(u3>tionmethod%hadUVOhred%inceSMEB31G*sinitia1.p