【英文标准名称】:Electricroadvehicles-Safetyspecifications-Part2:Functionalsafetymeansandprotectionagainstfailures
【原文标准名称】:道路电气车辆安全规范第2部分：功能安全方法和失效防护
【标准号】:ISO6469-2-2001
【标准状态】:作废
【国别】:国际
【发布日期】:2001-11
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC22
【标准类型】:()
【标准水平】:()
【中文主题词】:安全措施;安全要求;防电击;规范(验收);道路车辆;定义;摩托车;故障;安全;规范;电动汽车;运载工具;电的
【英文主题词】:Definitions;Electrical;Electromobiles;Failure;Motorvehicles;Protectionagainstelectricshocks;Roadvehicles;Safety;Safetymeasures;Safetyrequirements;Specification(approval);Specifications;Vehicles
【摘要】:ThispartofISO6469specifiesrequirementsforfunctionalsafetymeansandprotectionagainstfailuresrelatedtothespecifichazardoftheelectricalpropulsionofexclusivelybatterypoweredelectricroadvehicles(passengercarsandlightcommercialvehicles).Itisapplicableonlyifthemaximumworkingvoltageoftheon-boardelectricalcircuitislowerthan1000Va.c,or1500Vd.c.orlower,accordingtonationalstandardsorregulations(e.g.fortheprotectionofservicepersonnel),ftdoesnotnecessarilyapplytoassembly,maintenanceandrepairofthesevehicles.
【中国标准分类号】:T90
【国际标准分类号】:43_120
【页数】:6P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforMeasuringNeutronFluenceandAverageEnergyfrom3H(d,n)4HeNeutronGeneratorsbyRadioactivationTechniques1
【原文标准名称】:用放射性技术测定H3(d,n)He4中子发生器所产生的中子注量和平均能量的标准试验方法
【标准号】:ASTME496-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E10.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:14-MeV;DT;neutronactivation;neutrongenerator;neutronmetrology;Neutronactivationreactions;Neutronflux/fluence;Radioactivation--fastneutronflux;Thresholddetectors--14MeV;Fastneutronflux/fluence;Fluence
【摘要】:RefertoPracticeE261forageneraldiscussionofthemeasurementoffast-neutronfluencerateswiththresholddetectors.RefertoTestMethodE265forageneraldiscussionofthemeasurementoffast-neutronfluenceratesbyradioactivationofsulfur-32.Reactionsusedfortheactivitymeasurementscanbechosentoprovideaconvenientmeansfordeterminingtheabsolutefluenceratesof14-MeVneutronsobtainedwith3H(d,n)4Heneutrongeneratorsoverarangeofirradiationtimesfromsecondstoapproximately100days.Highpuritythresholdsensorsreferencedinthistestmethodarereadilyavailable.Theneutron-energyspectrummustbeknowninordertomeasurefast-neutronfluenceusingasinglethresholddetector.Neutronsproducedbybombardingatritiatedtargetwithdeuteronsarecommonlyreferredtoas14-MeVneutrons;however,theycanhavearangeofenergiesdependingon:(1)theangleofneutronemissionwithrespecttothedeuteronbeam,(2)thekineticenergyofthedeuterons,and(3)thetargetthickness.InmostavailableneutrongeneratorsoftheCockroft-Waltontype,athicktargetisusedtoobtainhigh-neutronyields.Asdeuteronspenetratethroughthesurfaceandmoveintothebulkofthethicktarget,theyloseenergy,andinteractionsoccurringdeeperwithinthetargetproduceneutronswithcorrespondinglylowerenergy.WidevariationsinneutronenergyarenotgenerallyencounteredincommerciallyavailableneutrongeneratorsoftheCockroft-Waltontype.Figs.1and2(1)showthevariationofthezerodegree3H(d,n)4Heneutronproductioncrosssectionwithenergy,andclearlyindicatethatmaximumneutronyieldisobtainedwithdeuteronshavingenergiesnearthe107keVresonance.Sincemostgeneratorsaredesignedforhighyield,thedeuteronenergyistypicallyabout200keV,givingarangeofneutronenergiesfromapproximately14to15MeV.Thedifferentialcenter-of-masscrosssectionistypicallyparameterizedasasummationofLegendrepolynomials.Figs.3and4(1,2)showhowtheneutronyieldvarieswiththeemissionangleinthelaboratorysystem.TheinsertinFig.4showshowthemagnitude,A1,oftheP1(x03B8;)term,andhencetheasymmetryinthedifferentialcrosssectiongrowswithincreasingenergyoftheincidentdeuteron.Thenonrelativistickinematics(validforEdx003C;20MeV)forthe3H(d,n)4Hereactionshowthat:where:En

【中国标准分类号】:A58
【国际标准分类号】:17_240
【页数】:12P.;A4
【正文语种】:英语