SAE AS91 Propeller Shaft Ends, Dual Rotation (Propeller Supplied Bearing) (NONCURRENT May 1995)
作者:标准资料网 时间:2024-05-09 13:27:54 浏览:9739
来源:标准资料网
Product Code:SAE AS91
Title:Propeller Shaft Ends, Dual Rotation (Propeller Supplied Bearing) (NONCURRENT May 1995)
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available.
【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
【英文标准名称】:StandardTestMethodsforCellulosicFiberInsulatingBoard
【原文标准名称】:纤维质纤维隔热板标准试验方法
【标准号】:ASTMC209-1998
【标准状态】:作废
【国别】:美国
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:建筑用纤维板;绝缘纤维板;隔热;绝缘材料;试验;建筑
【英文主题词】:Construction;Fibrebuildingboard;Insulatingboards;Insulatingmaterials;Testing;Thermalinsulation
【摘要】:
【中国标准分类号】:Q25
【国际标准分类号】:27_220
【页数】:4P;A4
【正文语种】:英语
