ASTM C1344-1997(2003) 用标准气体源质谱法进行六氟化铀的同位分析的标准试验方法

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【英文标准名称】:StandardTestMethodforIsotopicAnalysisofUraniumHexafluoridebySingle-StandardGasSourceMassSpectrometerMethod
【原文标准名称】:用标准气体源质谱法进行六氟化铀的同位分析的标准试验方法
【标准号】:ASTMC1344-1997(2003)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:C26.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:六氟化铀
【英文主题词】:single-standardgassourcemassspectrometer;uraniumhexafluoride
【摘要】:Uraniumhexafluorideisabasicmaterialusedtopreparenuclearreactorfuel.Tobesuitableforthispurpose,thematerialmustmeetthecriteriaforisotopiccomposition.ThistestmethodisdesignedtodeterminewhetherthematerialmeetstherequirementsdescribedinSpecificationsC787andC996.ASTMCommitteeC-26SafeguardsStatement:5.2.1Thematerial(uraniumhexafluoride)towhichthistestmethodappliesissubjecttothenuclearsafeguardsregulationsgoverningitspossessionanduse.Theanalyticalprocedureinthistestmethodhasbeendesignatedastechnicallyacceptableforgeneratingsafeguardsaccountabilitydata.5.2.2Whenusedinconjunctionwithappropriatecertifiedreferencematerials(CRMs),thisprocedurecandemonstratetraceabilitytothenationalmeasurementbase.However,adherencetothisproceduredoesnotautomaticallyguaranteeregulatoryacceptanceoftheregulatorysafeguardsmeasurements.Itremainsthesoleresponsibilityoftheuserofthistestmethodtoensurethatitsapplicationtosafeguardshastheapprovaloftheproperregulatoryauthorities.1.1Thistestmethodcoverstheisotopicanalysisofuraniumhexafluoride(UF6)andmaybeusedfortheentirerangeof235Uisotopiccompositionsforwhichstandardsareavailable.1.2ThistestmethodisapplicabletothedeterminationoftheisotopicrelationshipbetweentwoUF6samples.Iftheabundanceofaspecificisotopeofonesample(thestandard)isknown,itsabundanceintheothercanbedetermined.Thistestmethodisflexibleinthatthenumberoftimesagivenmaterialisadmittedtotheionsourcemaybeadjustedtotheminimumrequiredforaspecifiedprecisionlevel.1.3Thesensitivitywithwhichdifferencesbetweentwomaterialscanbedetecteddependsonthemeasuringsystemused,butratio-measuringdevicescangenerallyreadratio-of-molratiodifferencesassmallas0.0001.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsstatementsaregiveninSection7.
【中国标准分类号】:F80
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】: