1、INTERNATIONA1.STANDARDISO4233editionF1.rst2O23-O3Reactortechno1.ogyNuc1.earfusionreactorsHothe1.ium1.eaktestingmethodforhightemperaturepressure-bearingcomponentsinnuc1.earfusionreactorsTechno1.ogiedureacteurReacteursdfusionnuc1.eaireMethodedeContro1.ed1.etancheUepardetectiondefuited,he1.iumaChQudpou
2、rIesComposantssouspressionhautetemperaturedeMacteUrSfusionnuc1.eaireISO2023COPYRIGHTPROTECTEDDOCUMENTISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.orbmtndH0tf1.ttoni(nc4nmpe*MqnrtiatfifiHipB1.andonnet8CH-1214Vernier,GenevaPhone：M1.227490111觥ftte:丽丽BQrgPub1.ishedinSwitzer1.andContentsIntroduction.VCScone1
3、3Normativereferences一14Termsanddefinitions5Symbo1.s一.2,Princip1.esandtechniquesofdetection6 hm7 Personne1.一5AnDaratiis57.1Gener3157.2Testcomponentandvacuumchamber7JHtinpcn11f1.tB三11HJ11impvstncntr1.svstem7.5Temperatureuniformityrequirement77.6Reference1.eakU-78TestConmonentDreoaration8.1Pre1.iminarv
4、testsbeforehothe1.ium1.eaktest98.2Vacuumbaking.999.1CQIWm1.99.2Resnonseanddeanuotimemeasurements10Testinpnrocedures1110.1Insta1.1.ationofthecomponentintothetestsystem110.2Initia1.set-upofthe1.eaktestingsystem110.8HtinhiMbionhsiX10.5Cyc1.ichothe1.ium1.eaktesting121110.6Fina1.co1.dhe1.ium1.eaktesting1
5、2Testreport_12Foreword988ForewordISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.standardsthiiugh(ISOtnrifaaibwrim11rhvcekWPfff1.QtafigbodyEtttMdtiJMiaibtandrikN(11owhUycamehf1.t2committeehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1
6、organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenancea
7、re蜩映也搬OfISOIECdte胸Hgnura螂即胸tekordanceVMtheeditoria1.ru1.esoftheSOIECDirectives,Part2.www.iso.org/directivcsusedinthisAnytradeR盗帖Onrightsd般掂出1n膈粉蛾ns冲朋F吸K冲嘏盘支忖doc1.三棉见鼠银服subjectofanypatentrightsidentifiedduringthedeve1.opment4thdoumzuwi1.1.beintheIntroductionand/orontheISO1.istofpatentdec1.arationsrec
8、eived.www.iso.org/patcntsconstitutenameendorsement,documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationonthemeaningofISOspecifictermsandexpressionsre1.atedtoconformity3财珀Kere*S部眼RIW监OrmatiOnintheTechnica1.ThisdocumentwaspreparedbyTechnica1.CommitteeISO/TC85,Nuc1.eartechno1.o
9、gy,nuc1.eartechno1.ogies,andradio1.ogica1.protection,SubcommitteeSC6,Reactortechno1.ogy.AnyfeedbackorquestionsonthisdocumentShCUIdhSthmwnationa1.standardsbody.Acomp1.ete1.istingofthesebodiescanbefoundatwww.iso.org/members.htm1.IntroductionHothe1.ium1.eaktestingcanrea1.izemorere1.iab1.e1.eaktightness
10、assessmentthantheconventiona1.co1.da1.11Dhpwiaftitingno)pfmifienperatutiuDandp11xdwmiRjndcjieat1.y陀舸eMh用gratioahhf1.tneakriskReactortechno1.ogyNuc1.earfusionreactorsHothe1.ium1.eaktestingmethodforhightemperaturepressurebearingcomponentsinnuc1.earfusionreactors1Scopecomponentdetectorhigh-pressuremeas
11、uringgastota1.the1.eakagemixtureinvacuumchambercomponentascomp1.exityandmateria1.softhecomponent,andisStiong1.yre1.atedtothetestsystemandthetestoperatingenvironmentnudearfusion-r,reactors,whichf1.owing-coo1.anttemperaturespressure.u1.tra-Normativeotherreferencesreactors.constitutesrequirementsaredoc
12、ument.Eordatedinreferences,on1.ySomeeditiona1.1.citedapp1.ies.contentISO9712,NondestructivetestingQua1.ificationandcertificationofNDTpersonne1.ISO20485:2017,Nondestructivetesting1.eaktestingTracerfjasmethod3Termsanddefinitionsapp1.y.ISOOn1.inebrowsingp1.atform:avai1.ab1.eath(tpswww.iso.Fgobp3.1backg
13、roundnoiseNote1toentry：Tnespecifiedperiodisusua1.1.y5min.Thisdocumentspecifiesthemethodsandtechniquesfor1.eaktightnessassessmentofameta1.1.icgas1.eakathighandtcrnperaturebyhe1.iumitsorgasratesa1.1.owingoutofthewithatracertracergasduringitstherma1.andpressurecyc1.esatitsoperatingconditions.Theminimum
14、detectab1.e1.eakageratecanbeas1.owasIOioPanu/s,dependingonthedimension,externa1.configurationconditions.Thisdocumentisapp1.icab1.eforthehothe1.ium1.eaktestofin-ponentsasperitsnorma1.highvacuumconditionsdownto10Paandwithinneroperatee1.evatedoperatinginanItia1.soapp1.icab1.etotheovera1.1.1.eaktightnes
15、stestofwe1.dsinothermeta1.1.iccomponentsandequipmentthatcou1.dbeevacuatedandpressurized,suchaspressurizedtanks,pipesandva1.vesinpowerp1.ants,2aerospaceandnuc1.earThefo1.1.owingdocumentsofIhisreferrcdinthetextsuchawaythattheoroftheirForundatedreferences,the1.atesteditionofthereferenceddocument(inc1.u
16、dinganyamendments)app1.ies.ISO20484,Nondestructivetesting1.eaktestingVocabu1.aryEN1779:1999.Non-destructivetesting-1.eaktesting-Criteriaformethodandtechniquese1.ectionForthepurposesofthisdocument,thetennsanddefinitionsgiveninISO20484andthefo1.1.owingISOandIECmaintaintermino1.ogydatabasesforuseinstan
17、dardizationatthefo1.1.owingaddresses:-IECE1.ectropcdia:avai1.ab1.eathttps:/www.e1.ec1.ropedia.org/nmaximumvibrationva1.ueofthebackgroundsigna1.inaspecifiedperiodNote2toentr):T1.ie1.argepu1.sesigna1.appearingoccasiona1.1.yduringthetestprocessshou1.dbeignored.4Symbo1.sThesymbo1.sandunitsgiveninTab1.e1
18、app1.ytothisdocument.Tab1.e1Symbo1.sandunitsSymbo1.DescriptionUnitCThevo1.umefractionofthehe1.iumgaswhenahe1.iumgasnux1.urcisusedfortheD/PPQQqqRRSSTTTaTi,tcCTp6raibncawdxncrtrSDgIverificationagkiherangeof2%toKior4Ci5Princip1.esandtechniquesofdetection5.1Thevacuumboxtechniqueft)rc1.osedobjectsB.2.1in
19、ISO20485:2017partia1.1.yapp1.iesforthishothe1.ium1.eaktest.Thetestcomponentsha1.1.beevacuatedunti1.thepressureisdownto1.essthan100Pa,andisthenfi1.1.edwithhe1.iumtracergastoitstestpressurethroughapipeconnectiontoatracerpBesmirergetsThestab1.e.ifftressuredHuibeacrtheranWevoa1.iish喊!由而drby谜IqiegatingPn
20、FS6uccr恒hubdhe!fthereare1.eaksinthetestcomponents,thetracergasoritsmixturewi1.1.f1.。WOUtofthecomponentandintothevacuumchamber.A1.1.ofthe1.eakedandthebackgroundtracergasesareco1.1.ectedbya嘛?hgasJ鸵Mt6酬B科P型也UAq搦电照侨Kcorded.spectrometer1.eakdetector(MS1.D),5.2D,Ca1.cu1.atetUAyCoauuhtest,sha1.1.befaci1.it
21、),IangebeofcaIibratedThisIsreferenceCriterionsystematicerror,thetestsystem:(Sc1.RC1.qjWh谭?纳邮哪册韶胪a(2):5.3theca1.ibrationminimumdetectab1.e1.eakagethantheactua1.tota1.1.eakage,qc,Sha1.1.thebecomponent,whichsha1.1.beca1.cu1.atedbyFormu1.a(4)in5.3.2.5.3.1Qsisca1.cu1.atedbyFormu1.a(3)：QS(Sc1.Ra)(5.3.2its
22、OPe1.UaA1.CakUhun(4)duttota1.1.eakageapp1.iedasComponentvarioustestingpressureconditionswhenthe1.eakagerateisnothigherthan10-sPam3s.Itsha1.1.be1.owerthanthea1.1.owab1.emaximum1.eakagerateofthecomponentinoperationforacceptance.Whenthetracergaspressureinthe1.eaktestisthesameasthespecifiedoperatingpres
23、sureofthecomponentorbetweenthetwoiswithinato1.eranceoft5%,thetota1.1.eakagerate,q,isdeterminedbyRH啰世4):1.RqaJ(4)(5tRa)CWhenthetracergaspressureismoredifferentfromtheoperatingpressureofthecomponent,thetota1.Ieak施e=fatejqRrtfttheCOmPOngSha惬edeterminedbyFormu1.a:(5tRtt)Cptnt(5)Wheretheeffectofthedownst
24、reampressure(thevacuumpressure)isignoredasitisquite1.owerthantheupstreampressure(tracergaspressure,Pteso11the1.eaktest.5.4EN1779app1.iesforthese1.ectionofthetestconditions,whichsha1.1.beconsistentwiththeoperatingconditionsofthecomponent,inc1.udingtemperatureandpressure.Thetemperatureofthecomponentun
25、dertestshou1.dnotbe1.owerthanthemaximumtemperatureofitsinnersurfaceCbB1.1.ibtjnginedhtothewoaisjicunraieObCf1.anicuonentoperatioQhmHdaMCa旬NIaRapi的&法8d:rtrctionaddition,thecomponentshou1.dgothroughtheoperatingtemperatureat1.eastoncewhi1.ethe1.eakageratereadingfromthe1.eakdetectorsha1.1.berecordedasre
26、ference.5.5toitsoperatingtemperatureinpressure-bearingtemperaturecyc1.eessentia1.fromambienthe1.iumtemperaturetoassessitsoperationa1.1.eaktightness.Consideringpossib1.eforeignmateria1.smayb1.ockthe1.eakinthetestcomponent,pressurecyc1.eateachtesttemperatureisrecommendedtoopenthe1.eak.Thisespecia1.1.y
27、thecaseforpu1.seschematica1.1.yshowninPgure1.operationcomponents.Thewho1.ehothe1.ium1.eaktestprocessis5.5.1testgoesthroughatemperatureambienttemperaturespecifichightemperature.tempebeperformedatafixedtemperature1.owerthan80withtheacceptancecriteriafromthec1.ient.ThehteaM幄1111dror(hgatesha1.1.berecor
28、ded.Ateachtesttemperature,the1.eakagerateofthecomponent5.5.2TWOqdesfromMmosphericpressurethepressure,PerfonDponent.The1.eakageratesha1.1.bemeasuredandrecordedinthewho1.eprocess.5.5.3moretherma1.recommendedconductingComponentsdifierentmateria1.sareactor,Chenna1.intoopen1.eaksinthejoints.5.5.4testtemp
29、eraturepressureShouMto1.erancei1.respetive1.yzpressurenothigherthanun1.essotherwisespecified.5.5.5pressurizingratesha1.1.morethan0.2MPa/minforsafety.Foreachpressureyde,thetestpressure1.eas11P)4KeytThistorjrofthehothe1.ium1.eaktestptemperaturepressureTrambienttemperature1 initia1.he1.ium1.eaktesting2
30、 he1.ium1.eaktestingate1.evatedtemperature3 Hna1.co1.dhe1.ium1.eaktestingFigure1Schematicdiagramshowingthehistorica1.hothe1.ium1.eaktestprocess5.6aka器measurementthehpressuresha1.1.keptmarttestco11onen1.durationSPhis1.onger.Ifthe1.eakageratemeasurementtakes1.ongertimethanexpected,theminimumdetectab1.
31、e1.eakageratesha1.1.bedeterminedagainimmediate1.yafterthemeasurement.45.7performed,ca1.ibrationofgasOutsidetesttheComponentwhenaevacuated,ratemeasurementsha1.1.be1.ongerthanthehe1.iumc1.eanuptimeasspecifiedin9.2.Itdependsonthepumpingrateofthesystemandshou1.dbe1.ongerthan10min.6Personne1.Personne1.pe
32、rformingtestinginaccordanceWiththisstandardsha1.1.bequa1.ifiedtoanappropriate!Jvc1.AppayattaScewithISO9712orequiva1.entinUiere1.evantindustria1.sector.1.1 Genera1.1.1.1Thehothe1.ium1.eaktestingsystemconsistsofat1.eastavaumchamberconnectingtoavacuumpumpingsystem,atestcomponentconnectingtoavacuumpumpa
33、ndahigh-pressuretracergassource,aheatingsystemtoheatthetestcomponent,atemperaturecontro1.andmeasurement6ystem,andaefecen/IiEak1.eakdenKotiHgtoisSCtaaaUokaIIycttomimMasFigjgguringsystemforthepressureKeyR1.R1.TeC.VC1.DFP,MPG1,G2,G3V1.-V6V7,V8HeEHTCSVreference1.eak,testcomponentandvacuumchamber,respect
34、ive1.y(racergas1.eakdetector,eitherahe1.ium1.eakdetectororaMS1.Dforepumpsetandmo1.ecu1.arpumpset.respective1.yvacuumgaugestomeasurethevacuumpressureinthevacuumsystemvacuumva1.vestwoVaCuUrn/pressureva1.vesetsahigh-pressurehe1.iumgasoritsmixturegassourcee1.ectricheatersettoheatthecomponentthermocoup1.
35、estomeasurethecomponentandvesse1.temperaturesva1.veSafctyFigure2Schematicdiagramofhothe1.ium1.eaktestingsystem7.1.27.1.37.1.41.2 Testcomponentandvacuumchamberpressuringchamber.aanotherpressurepressuregaugemeasurethevacuummeasurepressuremonitortest1.3 ThevacuumpumpingsystemachievedependingPressurevac
36、uumof1.eve1.iPabereachedintemperature,chamber.in-ponentsoftovacuumsystem,componentate1.evatedtemperaturetoreducetheminimumdetectab1.e1.eakagerateof1.4 Heatingandtemperaturecontro1.system1.4.11.4.2accordancestresses.heattreatmentrequirements.Forthermo-ponents,decidedup1.5 Temperatureuniformityrequire
37、menttemperatureuniformityinthiszoneshou1.dbecompatib1.ewiththeto1.erancerangerequirementas1.6 Reference1.eakaccurate1.ymeasurefromminimumdetectab1.e1.eakageorderoftocorrect1.yCaIibrateThestandardsystem1.eakage1.eakagerateofthesystemisin1.inewiththeacceptancecriteriafromthec1.ient.systemshowanaccepta
38、b1.e1.eakagerateascheckedbytheGrouptechniqueinISO20485withspipestheirconnectionsshou1.dbeCompatiHBWithhighvaaiumnditiosthosestain1.essstee1.s,variousg1.ass,a1.uminaceramic,Kovara1.1.oy,meta1.orAuororubbersea1.ingring.Thehighressureapp1.iedhe1.iumOoncentntionCofmoretanvo1.umefractionoxidation,suchast
39、hein-ponentsfornuc1.earfusionreactors.Thetestcomponentsha1.1.bep1.acedinavacuumchamber,withitsinnerchanne1.sconnectingtoagasvacuumthesystemandandhe1.iumsource.Agaugetosha1.1.beusedtoandandthethecomponentAVaeuUmpumpingsystemmayconsistofturbo-mo1.ecu1.arpumpsraforepumprvacuumgaugesandva1.ves,at1.easta
40、onthe1.eve1.10toatanytestthevacuumFortheItshou1.dbedesignedafusionreactorandothercomponentsrequiringquite1.ow1.eakagerate,thepumpingsystemisessentia1.tomakethepressureofthevacuumchamberdownto1.owerthan1103Pasothatthetestfaci1.itycanthetestbaketheThetestcomponentcanbeheatedbyane1.ectricheaterand/orby
41、circu1.atinghightemperatureinertgasf1.owingthroughtheinterna1.coo1.ingpassageofthecomponent.Sha1.1.haveandtemperaturecomponentthroughoutIeStpnXedUre.headsha1.1.bocontro1.1.edwithinaspecific1.imittopreventthecomponentfrombeingdamagedbyunacceptab1.etherma1.withThe1.imitcanbedeterminedbyausteniticstain
42、1.ess-stee1.ana1.ysisorbetospeedinthetherma1.cyc1.ing,theratecanbecontro1.1.edinawaythatitsmaximumtemperaturedifferencewi1.1.notexceed55.Inthiscase,anumberoftherma1.coup1.essha1.1.bemountedonitssurface.Thetestcomponentsha1.1.bep1.acedintheuniformtemperaturezoneofthevacuumchamber.Thetestspecifiedin5.
43、5.4.reference1.eakisa1.soca1.1.edasaca1.ibrated1.eak.Itsha1.1.beconnectedtothevacuumchamberandsha1.1.befarawaythethevacuumpumpingsetsinratetheentiresystem,thetestandmensuratewiththemaximuma1.1.owab1.e1.eakageratespecifiedforthetestcomponentandsha1.1.inanycasebechoseninordertodemonstratetheminimumdet
44、ectab1.ehcforcMiggnkifidjth色dikfifcccn1.mikinre。tti如匕UmftheIIefi(IbkHc4u1.ts.Ihcpipe1.inesha1.1.beevacuated1.7 Tracergas1.eakdetector1.7.1Eitherahe1.ium1.eakdetectororamassspectrometer1.eakdetectorcanbeused.1.7.2Withitsminimumdetectab1.e1.eakagerate,thedetectorsha1.1.beab1.etodetect1.eaksthatareanor
45、derofmagnitude1.owerthanthea1.1.owab1.emaximum1.eakagerateofthecomponenttobetested.Toavoidhe1.iumaccumu1.ationintheionizationchamberofthedetector,highpumpratedetectorshou1.dbeused.1.7.3Theresha1.1.benoby-passpumpingtothetracergas1.eakdetectortoensurethata1.1.1.eakinghe1.iumca112uoandbedetectedbythedetectorduring1.eakageratemeasurementVacuumva1.vesV1.andV4inFigure2sha1.1.thushec1.osedduringthemeasurement7.7.4Itisnota1.1.owab1.etousethezeroadjustmentofthedetectorduringtheentirehe1.ium1.
