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.pub1.ication.majorityohheseothermethodsrebasedonthesametheoretica1.mode1.fromwhichtheorigina1.ASMEB31Gmethodwasderived,butmayofferscenerefinementinaccuracy.Subsequent1.y,aneffortwasundertakentoupdatetheASMEB31GdocumenttoFecogn1.zecerta1.nothercorrosioneva1.uationmethodsthathaveprovenxoundandthathave%eenxuccessfu1.useinthePipdineindustry.IncorporationoftheseothermethodsintoarecognizedCodcdoaimcntprovidesthepipe1.ineoperatororotheruserwithaforma1.izedframeworkwkhinWhichtousesuchmethodo1.o1.es,aswe1.1.asaw1.derrngeofcodifiedtechnica1.optionsWithwhichtomakeanva1.uation.The2009FrVKiOnofASMEB31GFeneCtedthoseobjectivrs.The2012editionofASMEB31GwasapprovedbytheAmericanNationa1.StandardsInstitute(ANSI)onSeptember20,2012.InSMEB31G-2023fthenomenchture(xccpara,1.5)haxbeenrevixedandNonmandatoryAppendixAhasbeenadded.Fo1.1.owingapprova1.bytheASMEB31SundardsCommittee,SMEB31G*2023wasapprovedbyANSIasanAmericanNatk)na1.StandardonAugust3,2023.K.B.KjpUn.Consu1.tantWJMauro.RetiredK£Meyer.CDMSmithIndimru1.DtV1.DOnT.Mondjy.TeamCndustncs.1.H1.Nayyar.ConsuItMitK0.TheAmericanSocietyofMcchinia1.EnxincersW.Obon.Gu1.fIntcrstatrEnpnccrinD.W.VUhoi.CCM2000HIUn«.ConMjItintR. K.Reamcy1TumrrIndUadeKGroUP.IJCM.J.RscMdaRS1.PiPdinCSdutions.U.CKT.Schmitz.Consu1.tantS. K.Sinha.SOC(HE<：Enfgzrm心IncW.1.SperkozSpcrkoknpnccrin;ScnricE,tnc.F.W.Taur.ConsdtintK.AM1.m1.not.Commonwea1.thAsscc1.atcs;IncMEf1.Kdkcmicr.Omir.Cirp1.D.AmcttVicrChr.ExxonMobtIRccrchandEnXirwfTinaR.fUh4N11d11,decretory.TeAmcrkanSociHydMethanka1.EnxjfVEG.A.AnUIk1.BcchtEMinrEnXCovInCR.B«hca.H11N2p0NewtSNpbuiIdinKD.,Fctxncr.RrtirCdD.I1.Fraser.NASAAmcsResearchCxntcr工A.GrJXUn0.ConwhaintD.Hart.SSD.IncR.W.HauptPressurePiPinXEnginecringAisodatcs.Inc.RP.Ho1.brook.Consu1.tintHK0Mwy4m<GCCorpHAhc4.1.eisheirEngjncerinR.1.1.CG.D.M>t.Smo.IncT.Q.M<Ow1.cy.TQME*nedMPCBEMeyer.CDMSmithInduarUiDivMonP.D.MoorcBirtu&McDonncIIA.W.Pau1.ictPiuhnRrwjrrhGroupH).RoscntddRSPipe1.ineSotimom,1.1.CASMEB31COMMITTEECodeforPressurePiping(Tbcfoibw1.ngUtherosterofthecomm1.sccatthetimeoiapprova1.ofthisStandard.)STANDARDSCOMMI11EEOFFICERSGH1.krc,Jr.ChairK.A.VUminotViaChorrJ.OKXTetatySTANDARDSCOMMITTEEPERSONNE1.D.D.AndcrsoaRetiredI1.rrAppteby.Pipe1.inekxpcrt1.tXK.C.BodcnhjmcrTRCPipe1.ineServicesI1.M.Borczk.Consu1.tantMRBraz.MRBraz&ssoc>tcs.P1.1.CMBurkhartTbcBurkhartGroup.Inc.R.D.Gimpbc1.1.BrchtdJ.Cay1.or.Ciy1.orEnpnrcring&A”OCutrxP1.1.Cf.S.CMaTCEneryD.D.ChrhtUn,Yktz1.kR.P.Dctib1.cr.Bcchtf-nntf<rinCo»1.n<ME11dkc11tftcr.Q1.rKiICH.EkrMgc,JrBcchtEnotKrr1.MS.11cD.Frtzncr.RetiredD.I1.FrikkcctBcchtEnK1.nCEn1.CCo,Inc.ItA.Grichuk.S&B1.nRbccrsIndCOnStnKtDrX1.tdR.W.HauptPressurePipingEngineering;uocutcs.IncG.A.Jo1.1.y.Simshin.1.td.B31MECHANICA1.DESIGNTECHNICA1.COMMITTEECORRESPONDENCEWITHTHEB31COMMITTEEGenera1.ASMEcodesand)iandrdsaredeve1.opedandmaintainedbycommitteeswiththeintenttorepresenttheconsensusofconcernedinterests.UsersofASMEcodesandstandardsmaycorrespondwiththecommitteestoproposerevisk)nsorcases,reporterrata,orrequestinterpretations.CorrespondenceforthisManua1.shou1.dbesenttothestaffsecretarynotedonthecommktee*swebpage,accessib1.eathttps:/gojisme.org/831comm1.ctee.RevisionsandErrata.ThecommitteeprocessesrevisionstothisManua1.onaContinuousbasistoincorporatechangesthatappearnecessaryordesirab1.easdemonstratedbytheexperiencegainedfromtheappIiait1.onoftheManua1.Approvedrevisionswi1.1.bepub1.ixhedinthenexteditionoftheManua1.Inaddition,thecommitteemayposterrataonthecommitteewebpage.Erratabecomeeffectiveonthedateposted.Userscanregisteronthecommitteewebpagetoreceiveemai1.noti11cationsofpostederrata.ThisManuaIisah%*ayxopenForconunent.andthecommitteeespropo5forrevixicnsSuchproposa1.sxhou1.dbeasspccificaspossib1.e,citingtheparagraphnumbcr(三),thcproposed½rding.andadetai1.eddescriptionofthereasonsfortheproposa1.,indudmgnypertinentbackgroundinformationandsupportingdocumentation.Cases(a) Themostmmo11app1.icationsforcasesarcf1.)topermitear1.yimp1.ementationofrevisionbasedonanurgentneed(2) toprovidea1.ternativerequirements(3) toa1.1.owuserstogainexperienceWStha1.ternativeorpotentia1.additiona1.requirementspriortoIncorporationdirect1.yintotheManua1.(4) topermittheuse“newmateria!orprocess(b) Usersarccautionedthatnota1.1.jurisdictionsorownersautomatica1.1.yacceptcasesCasesarenottobeconsideredasapproving,recommending,certifying,orendorsinganyproprietaryorspecificdesign,oras1.imitinginanywaythefreedomofmanufacturers,constructorsorownerstochooseanymethodofdesignoranyformofConstrvctionthatconformstotheManua1.(c) Aproposedcasesha1.1.bewrittenasaquestionandrep1.yintheumeformatasexistingcases.Theproposa1.如IiIn1.Soinc1.udethefo1.1.owinginformation:(!)astatementofneedandbackgroundinformation(2) theurgencyofthecase(e.g.thecaseconcernsaprojectthatisunderwayorImminent)(3) theManua1.andtheparagraph,figure,ortab1.enumber(三)(4) theedition(三)oftheManua1.towhichtheproposedGISCapp1.ies(d) caseiseffetveforusewhenthepub1.icrevie½processhasbeencomp1.etedandItISapprovedbythecognizantwpervixoryboard.Approvedaxesarepostedonthecommitteewebpage.Interpretations.Uponrequest,thecommitteewi1.1.issueanInterpretationofanyrequirementofthisManua1.ninterpretationcanbeissuedon1.yinresponsetoarequestsubmittedthroughtheon1.ineInterpretationSubmitta1.Formathttps:/gosmeorg/1.nterpretationRequest.Uponsubmittingtheform,theinquirerwi1.1.receiveanautomatice-mai1.confirmingreceiptASMEdoesnotadasaconsu1.tantforspecificengineeringprob1.emsorforthegenera1.app1.icationOrundertUndingoftheManua1.requirements.If,basedontheinformationsubmitted,itistheopinionofthecommitteethattheinquirershou1.dseekassistance,therequestWinbereturnedWtthther(*oommcndatk)nIhatsuchassistancebeObtainedJnqu1.rcrscantradethestatusoftheirrequestsathttpsgoj3sme.org/1.nterpre1.ations.ASMEprocedure%provideforreconsiderationofanyinterpretationwhenori(additiona1.informationthtmightaffectaninterpretationisavai1.ab1.e.Further,personsaggrievedbyaninterpretationmayappea1.tothecognizantASMECommitteeorsubcommittee.ASMEdoesnoteapprovef-certify,*rate,*orendorse,anyitem,construction,proprietarydevice,oractivity.Interpretationsarepub1.ishcdintheASMEinterpretationsDatabascathttps:/go.asmc.org/1.nterprctationsastheyareIssued.CommitteeMeet1.n.TheB31StandardsComEineCregu1.ar1.yho1.dsmeetingsthatareopentothepub1.icPcrwnswishingtoattendanymeetingshou1.dcontactthesecretaryofthecommittee.Informationonfuturecommitteemeetingsanbefoundonthecommitteewebpageath11psgo.asme.orgB31com11Uttee.ASMEB31G-2023SUMMARYOFCHANGESFo1.1.owingapprova1.bytheASMEB31GConunittccandASME.andafterpub1.icreview,ASMEB31G-2023wasapprovedbytheAmericanNationa1.StandardsInstituteonAugust3.2023.ASMEB31G*2023Inc1.udesthefo1.1.owingchangesidentifiedbya11urg1.nnote.(23).PWC1.ocationChangeI1.4Subparagraph（八）editoria1.1.yrevised215(1)Nomenc1.aturefor1.«andZede1.eted(2)Nomencbtureforgadded41.10Insecondparagraph,referencesadded722Referencesedkoria1.1.yrevised723Secondparagraphandsubpara.(b)revised64NonmandatoryAppendixAddedINTENTIONA1.1.Y1.EFTB1.ANKMANUA1.FORDETERMININGTHEREMAININGSTRENGTHOFCORRODEDPIPE1.INES1 INTRODUCTION1.1.ScopeThisdocumentisintendedxo1.e1.y(orthepurpoxeofprovidingguidanceintheeva1.uationofmeta1.1.ossinpressurizedpipe1.inesandpipingsystems.Itisapp1.icab1.etoa1.1.pipe1.inesandpipingsystem%withinthescopeefthetransportationpipe1.inecodesthatarepartofASMEB31CodeforPressurePiping,name1.y:ASMEB31.4,PipdineTransportationSystemsfor1.iquidHydrocarbonsandOtherquids;ASMEB3I.8,GasTransmissionandDistributionPipingSystems：ASMEB31.11fS1.urryTransportationPipingSystems;andASMEB31.12iHydrogenPipingandPipe1.ines,PartP1.Wherethetermepipe1.ine*isused,itmaya1.sobereadtoapp1.ytopipingorpipeconformingtotheacceptab1.eapp1.icationsandwithinthetechnica1.1.imitationsdiscussedbe1.vv.1.2 Acceptab1.eApp1.icationsTheapp1.icationofthisdocumentIs1.imitedtotheeva1.uationofwa1.1.1.o*winmeu1.pipewithinthefo1.1.owing1.imitations:(a) meta1.1.ossInpipe<tnes1.ocatedbdowground,aboveground.orOfkhQre(b) meta1.1.ossduetoexterna1.orinterna1.corrosion(c) meu1.1.ossproducedbygrindingwhereUsedtocom-PIeteIyremovemechanica1.damage,crac1.,arcburns,manufacturingdefects,orotherdefectsfromthepipesurface(d) meta1.1.ossInHe1.dbends,Induaionbends,nddbows(e) mea1.1.ossthatincidenta1.1.yaffectsIongktudina1.orhe1.ica1.e1.ectricseamwe1.dsorcircumferentia1.e1.ectricwe1.dsOfsoundqua1.ityandhavingducti1.echaracteristictfprovidedworkmanshipf1.awsarenotpresentInsufficient1.ydoseproximitytoInteractwiththemea1.1.oss(J)meU1.Iossofnnydepthwithrespecttothepipewa1.1.,exceptthatdueconsiderationsha1.1.begiventotheaccuracyOfmeasurementsandeffectivecorrosionrateswhenthedepthofmeta1.1.owexceeds80%oftheactua1.pipewa1.1.dimension(g) meta1.tossinnewpipewherea1.1.owedbytheapp1.bcab1.ecodeofconstruction(h) meu1.1.ossInpipemateria1.havingducti1.efractureinitiationcharacteristics(seepra%1.7(e)and1.7(f)un1.essusinga1.eve1.3assessmentinaccordancewithparas.2.2(b)and2.4(i) meta1.1.ossinpipeoperatingattemperaturesabovrambientwithintherangeofoperatingtemperaturerecognizedbythegoverningstandard,ndprovidedmateria1.strengthpropertiesattemperatureareconsidered(j) 11wtai1.ossinpipeoperatingatanyk%*dofa1.1.owab1.edesignhoopessseepras.1.4（八）and1.4(b)foraddbtiona1.considerations)(k) meta1.1.ossinpipewhereinterna1.pressureistheprtmary1.oadingseepras.1.4(c)and1.4(d)foradditiona1.considerations!1.3 Exc1.usionsThisdocumentdocsnotapp1.ytothefo1.1.owing:(a) crackdikedefectsormechanica1.surfacedamagenotcomp1.ete1.yremovedtoasmoothcontourbygrinding(b) meta1.1.ossinindentationsorbuck1.esresu1.tinginradia1.distortionofthepipewa1.1.brgerthan6%ofthepipeoutsidediameter,un1.essa1.eve1.3assessmentisperformedinaccordancewithpara.2.4(c) groovingcorrosk>n,se1.ectivecorrosion,orpreferenti