基本信息
| 标准名称： | 船舶产品图样和技术文件管理 第4部分:修改规定 |
| 中标分类： |
船舶 >>
船舶综合 >>
技术管理 |
| ICS分类： |
综合、术语学、标准化、文献 >>
信息学、出版 >>
行政管理、商业和工业文件
|
| 替代情况： | CB* 3243.4-85 |
| 发布日期： | 1995-12-19 |
| 实施日期： | 1996-08-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 6页 |
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所属分类： 船舶 船舶综合 技术管理 综合 术语学 标准化 文献 信息学 出版 行政管理 商业和工业文件
【英文标准名称】:StandardTestMethodforApplicationandAnalysisofRadiometricMonitorsforReactorVesselSurveillance,E706(IIIA)
【原文标准名称】:反应堆容器监控用辐射测量监控仪应用和分析的标准试验方法E706(IIIA)
【标准号】:ASTME1005-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:E10.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:activity;fissionmonitor;monitorfoil;neutronfluence;pressurevessel;radiometricmonitor;reactionrate;reactorsurveillance
【摘要】:Radiometricmonitorsshallprovideaprovenpassivedosimetrytechniqueforthedeterminationofneutronfluencerate(fluxdensity),fluence,andspectruminadiversevarietyofneutronfields.Thesedataarerequiredtoevaluateandestimateprobablelong-termradiation-induceddamagetonuclearreactorstructuralmaterialssuchasthesteelusedinreactorpressurevesselsandtheirsupportstructures.Anumberofradiometricmonitors,theircorrespondingneutronactivationreactions,andradioactivereactionproductsandsomeofthepertinentnuclearparametersoftheseRMsandproductsarelistedinTable1.Table2providesdata(35)onthecumulativeandindependentfissionyieldsoftheimportantfissionmonitors.Notincludedinthesetablesarecontributionstotheyieldsfromphoto-fission,whichcanbeespeciallysignificantfornon-fissilenuclides(23-29,36-39).1.1Thismethoddescribesgeneralproceduresformeasuringthespecificactivitiesofradioactivenuclidesproducedinradiometricmonitors(RMs)bynuclearreactionsinducedduringsurveillanceexposuresforreactorvesselsandsupportstructures.MoredetailedproceduresforindividualRMsareprovidedinseparatestandardsidentifiedin2.1andinRefs11,24-27.Themeasurementresultscanbeusedtodefinecorrespondingneutroninducedreactionratesthatcaninturnbeusedtocharacterizetheirradiationenvironmentofthereactorvesselandsupportstructure.Theprincipalmeasurementtechniqueishighresolutiongamma-rayspectrometry,althoughX-rayphotonspectrometryandBetaparticlecountingareusedtoalesserdegreeforspecificRMs(1-29).1.1.1Themeasurementproceduresincludecorrectionsfordetectorbackgroundradiation,randomandtruecoincidencesumminglosses,differencesingeometrybetweencalibrationsourcestandardsandtheRMs,selfabsorptionofradiationbytheRM,otherabsorptioneffects,radioactivedecaycorrections,andburnoutofthenuclideofinterest(1-10,12-22).1.1.2Specificactivitiesarecalculatedbytakingintoaccountthetimedurationofthecount,theelapsedtimebetweenstartofcountandtheendoftheirradiation,thehalflife,themassofthetargetnuclideintheRM,andthebranchingintensitiesoftheradiationofinterest.Usingtheappropriatehalflifeandknownconditionsoftheirradiation,thespecificactivitiesmaybeconvertedintocorrespondingreactionrates(24-30).1.1.3Proceduresforcalculationofreactionratesfromtheradioactivitymeasurementsandtheirradiationpowertimehistoryareincluded.Areactionratecanbeconvertedtoneutronfluencerateandfluenceusingtheappropriateintegralcrosssectionandeffectiveirradiationtimevalues,and,withotherreactionratescanbeusedtodefinetheneutronspectrumthroughtheuseofsuitablecomputerprograms(24-30).1.1.4TheuseofbenchmarkneutronfieldsforcalibrationofRMscanreducesignificantlyoreliminatesystematicerrorssincemanyparameters,andtheirrespectiveuncertainties,requiredforcalculationofabsolutereactionratesarecommontoboththebenchmarkandtestmeasurementsandthereforeareselfcanceling.Thebenchmarkequivalentfluencerates,fortheenvironmenttested,canbecalculatedfromadirectratioofthemeasuredsaturatedactivitiesinthetwoenvironmentsandthecertifiedbenchmarkfluencerate(24-30).1.2ThismethodisintendedtobeusedinconjunctionwithASTMGuideE844.ThefollowingexistingorproposedASTMpractices,guides,andmetho......
【中国标准分类号】:F82
【国际标准分类号】:17_240
【页数】:10P.;A4
【正文语种】:英语