【英文标准名称】:StandardGuideforReconstitutionofIrradiatedCharpy-SizedSpecimens
【原文标准名称】:辐照摆锤型试样的复原用标准指南
【标准号】:ASTME1253-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E10.02
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:摆式冲击试验;说明书;试件
【英文主题词】:Charpy;impactenergy;fracturetoughness;nuclearpressurevesselsurveillance;reconstitution;weldingprocess
【摘要】:PracticeE185definestheminimumrequirementsforlight-waterreactorsurveillanceprogramCharpyV-notchspecimensandPracticeE2215describestheevaluationoftestspecimensfromsurveillancecapsules.Itmaybedesirabletoextendtheoriginalsurveillanceprogrambeyondavailablespecimensforplantagingmanagementissues,suchasplantlicenserenewal,tobetterdefineexistingdata,ortodeterminefracturetoughnessofamaterialwhennostandardfracturetoughnesstestspecimensareavailable.Theabilitytoreconstitutethebrokenhalvesofexistingspecimenscanprovidesuchdata.Charpy-sizedspecimensaretypicallymachinedfromvirginmaterial,thatis,materialnotpreviouslymechanicallytested.Thereareoccasionsthatexistwheneither(1)nofullsizespecimenblanksareavailableor(2)thematerialavailablewiththedesiredhistory(suchashavingbeensubjectedtoirradiation)isnotsufficientforthemachiningoffull-sizespecimens,orboth.Anapproachtothisproblem,whichisaddressedinthisguide,istofabricatenewspecimensusingthebrokenhalvesofpreviouslyirradiatedandtestedspecimensorothermaterialirradiatedforthispurpose.Inthisguide,thecentralsegmentofeachnewspecimenutilizesabrokenhalfofapreviouslytestedspecimenandendtabsthatareweldedtothecentralsegment,orthecentralsectionmaysimplybeapieceofvirginmaterialshorterthanaCharpy-sizedspecimen.Whilespecificallyaddressingreconstitutionofirradiatedpressurevesselsteel,thisguidecanalsoprovideguidanceforreconstitutionofCharpy-sizedspecimensforothersituationsinvolvingmaterialavailability.1.1Thisguidecoversproceduresforthereconstitutionofferriticpressureboundarysteelsusedinnuclearpowerplantapplications,TypeACharpy(TestMethodsE23)specimensandspecimenssuitablefortestinginthreepointbendinginaccordancewithTestMethodsE1921orE1820.Materialsfromirradiationprograms(principallybrokenspecimens)arereconstitutedbyweldingendtabsofsimilarmaterialontoremachinedspecimensectionsthatwereunaffectedbytheinitialtest.Guidelinesaregivenfortheselectionofsuitablespecimenhalvesandendtabmaterials,fordimensionalcontrol,andforavoidanceofoverheatingthenotcharea.AcomprehensiveoverviewofthereconstitutionmethodologiescanbefoundinRef(1).1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N73
【国际标准分类号】:19_060
【页数】:4P.;A4
【正文语种】: