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【英文标准名称】:Evaluationofsurfacecontamination;part1:beta-emitters(maximumbetaenergygreaterthan0,15MeV)andalpha-emitters
【原文标准名称】:表面污染评价第1部分:β发射体(最大β能量大于0.15MeV)和α发射体
【标准号】:ISO7503-1-1988
【标准状态】:现行
【国别】:国际
【发布日期】:1988-08
【实施或试行日期】:1988-08-01
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC85
【标准类型】:()
【标准水平】:()
【中文主题词】:β粒子;β粒子;放射性;放射性同位素;α粒子;α粒子;表面;沾污;核动力;核技术;测量技术;核辐射;测量;辐射测量;放射性物质;辐射防护;定义;核能
【英文主题词】:Alpha-particles;Beta-particles;Contamination;Definitions;Measurement;Measuringtechniques;Nuclearenergy;Nuclearpower;Nuclearradiation;Nucleartechnology;Radiationmeasurement;Radiationprotection;Radioactiveisotopes;Radioactivematerials;Radioactivity;Surfaces
【摘要】:Appliestosurfacesofequipmentandfacilities,containersofradioactivematerialsandsealedsources,doesnotapplytotheskinandcontaminationofclothing.Givesdirectandindirectmethodsofmeasurement(thelatterbymeansofsmeartests).Isrestrictedtobeta-andalpha-emitters,theproductionrateofwhich,withregardtobeta-particlesplusmonoenergeticelectronsandalpha-particlesresp.,isnearto100particlesper100decays.EvaluationoftritiumsurfacecontaminationisdealtwithinISO7503-2,otherradionuclidesofpracticalimportancewillbedealtwithinafuturestandard.
【中国标准分类号】:F51;F74
【国际标准分类号】:13_280
【页数】:11P;A4
【正文语种】:英语


【英文标准名称】:Low-voltageacpowercircuitbreakersusedinenclosures
【原文标准名称】:封装的低压交流电源断路器
【标准号】:IEEEC37.13-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008-12-10
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:交流电流;交流断路器;交流开关;断路器;定义;电气工程;外壳;低电压;低压设备;低压开关设备;开关;开关设备;测试
【英文主题词】:Alternatingcurrent;Alternating-currentcircuitbreakers;Alternating-currentswitches;Circuit-breakers;Definitions;Electricalengineering;Enclosures;Lowvoltage;Low-voltageequipment;Low-voltageswitchgear;Switches;Switchgears;Testing
【摘要】:Thescopeofthisstandardincludesthefollowingenclosedlow-voltageacpowercircuitbreakers:a)Stationaryordrawouttypeoftwo-,three-,orfour-poleconstructionwithoneormoreratedmaximumvoltagesof635V(600Vforunitsincorporatingfuses),508V,and254Vforapplicationonsystemshavingnominalvoltagesof600V,480V,and240Vb)Unfusedorfusedtypec)Manuallyoperatedorpoweroperated,withorwithoutelectromechanicalorelectronictripdevicesd)Fuseddrawoutsconsistingofcurrent-limitingfusesinadrawoutassemblyintendedtobeconnectedinserieswithalow-voltageacpowercircuitbreakertoformanonintegrallyfusedcircuitbreakerNOTE—Inthisstandard,thetermcircuitbreakershallmeanenclosedlow-voltageacpowercircuitbreaker,eitherfusedorunfused.Thetermunfusedcircuitbreakershallmeanacircuitbreakerwithouteitherintegrallyornonintegrallymountedfuses,andthetermfusedcircuitbreakershallmeanacircuitbreakerincorporatingcurrentlimitingfuses.1Thisdocumentappliestobothintegrallyandnonintegrallyfusedcircuitbreakers.
【中国标准分类号】:K31
【国际标准分类号】:29_130_20
【页数】:37P.;A4
【正文语种】:英语