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首页 ASTM C1233 – 98

ASTM C1233 – 98.pdf

ASTM C1233 – 98

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2013-12-27 0人阅读 举报 0 0 暂无简介

简介:本文档为《ASTM C1233 – 98pdf》,可适用于工程科技领域

Designation:C–StandardPracticeforDeterminingEquivalentBoronContentsofNuclearMaterialsThisstandardisissuedunderthefixeddesignationCthenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevisionAnumberinparenthesesindicatestheyearoflastreapprovalAsuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapprovalScopeThisstandarddetailsarecommendedpracticeforthecalculationoftheEquivalentBoronContent(EBC)valuesforelementsthatareofpotentialsignificanceasthermalneutronpoisonsThevaluesaredeterminedfromaknowledgeoftheatomicweightofelementsandthethermalneutronabsorptioncrosssectioninbarnsThispracticeisillustratedbyusingtheEBCfactorsofTablewhicharebasedonthermalneutron(ms)absorptioncrosssectionsOtherEBCfactorsmaybeuseddependingupontheactualneutronenergycharacteristicsoftheapplicablereactorsystemThefollowingelementsdonotrequiretobeincludedintheEBCcalculations,astheirEBCfactorsarelessthanorequaltoaluminumfluorinerubidiumbariumleadsiliconberylliumneontinbismuthoxygenzirconiumcarbonmagnesiumceriumphosphorusTheircontributiontothetotalpoisoneffectisnotconsideredsignificantReferencedDocumentsASTMStandards:ThispracticeisunderthejurisdictionofASTMCommitteeConNuclearFuelCycleandisthedirectresponsibilityofSubcommitteeConFuelandFertileMaterialSpecificationsCurrenteditionapprovedAugJuly,PublishedNovemberAugustOriginallypublishedasC–approvedinLastpreviousapproveditionasC–ThisdocumentisnotanASTMstandardandisintendedonlytoprovidetheuserofanASTMstandardanindicationofwhatchangeshavebeenmadetothepreviousversionBecauseitmaynotbetechnicallypossibletoadequatelydepictallchangesaccurately,ASTMrecommendsthatusersconsultprioreditionsasappropriateInallcasesonlythecurrentversionofthestandardaspublishedbyASTMistobeconsideredtheofficialdocumentCopyright©ASTMInternational,BarrHarborDrive,POBoxC,WestConshohocken,PA,UnitedStatesTABLEEquivalentBoronContentFactorsElementNeutronAbsorptionCrossSectionA(Barns)atmsAtomicMassBEBCFactorAntimonyCArgonArsenicBoronDBromineCadmiumCalciumCesiumChlorineChromiumCobaltCopperDysprosiumErbiumEuropiumGadoliniumGalliumGermaniumCGoldHafniumHolmiumHydrogenIndiumCIodineIridiumIronCKryptonLanthanumCLithiumELutetiumManganeseMercuryMolybdenumCNeodymiumCNickelCNiobiumNitrogenOsmiumPalladiumPlatinumPotassiumCPraseodymiumRheniumRhodiumRutheniumCSamariumScandiumSeleniumSilverSodiumStrontiumCSulphurTantalumTelluriumTerbiumThalliumThoriumThuliumTitaniumTungstenVanadiumXenonYtterbiumYttriumZincANeutronCrossSections,Vol,PartsAandB,AcademicPress,NewYork,and,respectivelyBHolden,NE,andMartin,RL,PureandAppliedChemistry,Vol,p,CIntheabsenceofotherdata,theneutroncapturecrosssectionforaMaxwellianfluxisusedDCrosssectionisprimarilyduetoasingleisotope,whoseisotopicabundanceisvariableinnatureThevaluecanvarybetweenandbarnsdependinguponthesourceSeeHolden,NE,NeutronCaptureCrossSectionStandardsforBNL,FourthEd,BNLNCS,JanuaryECrosssectionisprimarilyduetoasingleisotope,whoseisotopicabundanceisvariableinnatureThevaluecanvarybetweenandbarnsdependinguponthesourceSeeHolden,NE,NeutronCaptureCrossSectionStandardsforBNL,FourthEd,BNLNCS,JanuaryC–CTestMethodsforChemical,MassSpectrometric,andSpectrochemicalAnalysisofNuclearGradeUraniumDioxidePowdersandPelletsCTestMethodsforChemical,MassSpectrometric,andSpectrochemicalAnalysisofNuclearGradeMixedOxides((U,Pu)O)CMethodsforChemical,MassSpectrometric,andSpectrochemicalAnalysisof,andPhysicalTestson,BerylliumOxidePowderCTestMethodsforChemical,MassSpectrometric,Spectrochemical,Nuclear,andRadiochemicalAnalysisofUraniumHexafluorideCTestMethodsforChemical,MassSpectrometric,Spectrochemical,Nuclear,andRadiochemicalAnalysisofNuclearGradeUranylNitrateSolutionsCTerminologyRelatingtoNuclearMaterialsTerminologyTermsshallbedefinedinaccordancewithTerminologyCMethodsForEBCDeterminationAgreementshallbereachedbetweenthebuyerandsellerastowhichelementsshallbeanalyzedforcalculationoftheirEBCItisrecommendedthatB,Cd,Dy,Eu,Sm,andGdbeincludedinthiscalculationAnalyticalmethodsforsuchelementsshallbethosegiveninMethodsC,C,andC,andTestMethodsCandCasapplicableorasotherwiseagreeduponbetweenbuyerandsellerTheindividualEBCvaluesarecalculatedusingtheEBCfactorsfromTableasfollows:EBCofimpurity~EBCfactor!~µgofimpuritygbasematerial!where:EBCfactor=~atomicmassboron!~saimpurity!~atomicmassimpurity!~saboron!,andsa=atomicneutronabsorptioncrosssectioninbarnsThevaluesgiveninTablehavebeencalculatedusingavalueofBarnsfortheneutronabsorptioncrosssection(sa)ofboronThisvaluemayvaryinnatureaccordingtotheisotopiccompositionoftheelementsIfanalternativevalueischosentheEBCfactorsmustberecalculatedusingthechosenvalueIftheconcentrationofanyoftheelementsusedinthecalculationisreportedas“lessthan”values,thesevaluesshallbeusedincalculatingtheEBCAtotalEBCvalue,ifrequired,isdeterminedbythesummationofindividualEBCvaluesPlutonium,thoriumanduraniumhavenotbeenincluded,astheyarefissionableelementsKeywordsboronneutronabsorptionnuclearmaterialsnuclearpoisonsASTMInternationaltakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstandardUsersofthisstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,areentirelytheirownresponsibilityThisstandardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteeandmustbereviewedeveryfiveyearsandifnotrevised,eitherreapprovedorwithdrawnYourcommentsareinvitedeitherforrevisionofthisstandardorforadditionalstandardsandshouldbeaddressedtoASTMInternationalHeadquartersYourcommentswillreceivecarefulconsiderationatameetingoftheresponsibletechnicalcommittee,whichyoumayattendIfyoufeelthatyourcommentshavenotreceivedafairhearingyoushouldmakeyourviewsknowntotheASTMCommitteeonStandards,attheaddressshownbelowThisstandardiscopyrightedbyASTMInternational,BarrHarborDrive,POBoxC,WestConshohocken,PA,UnitedStatesIndividualreprints(singleormultiplecopies)ofthisstandardmaybeobtainedbycontactingASTMattheaboveaddressorat(phone),(fax),orserviceastmorg(email)orthroughtheASTMwebsite(wwwastmorg)AnnualBookofASTMStandards,VolC–主营业务范围:ASTMASTMASTMASTM、NASNASNASNAS、NASMNASMNASMNASM、MILMILMILMIL、ISOISOISOISO、ENENENEN、DINDINDINDIN、JISJISJISJIS等技术标准翻译技术资料翻译NADCAPNADCAPNADCAPNADCAP认证标准资料翻译国外技术标准中文版优惠低价代购等。业务QQQQQQQQ:专业专注于技术翻译诚信实惠物超所值的服务可靠的质量保证

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