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【英文标准名称】:Testingofglass;chemicalanalysisofcolourlesssoda-lime-glasswithSiO,CaO,MgOandNaOasmainconstituents,determinationoftotalironoxidesasFeO
【原文标准名称】:玻璃的检验.未染色的钙—氧化钠玻璃的化学分析.其主要成分为SiO2.CaO.MgO和Na2O
【标准号】:DIN52340Bb.6-1974
【标准状态】:作废
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【发布单位】:德国标准化学会(DE-DIN)
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【标准类型】:()
【标准水平】:()
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【英文标准名称】:Railwayapplications-Communication,signallingandprocessingsystems-Safetyrelatedelectronicsystemsforsignalling
【原文标准名称】:铁路设施.通信、信号传输和处理系统.信号传输用与安全性相关的电子系统
【标准号】:IEC62425-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-09
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC9
【标准类型】:()
【标准水平】:()
【中文主题词】:通信系统;数据总线;定义;电气工程;电子工程;电子系统;信息交换;铁路设施;铁路工程;铁道车辆;铁路;安全;安全工程;安全要求;安全管理;信号装置;信号传输;规范(验收)
【英文主题词】:Communicationsystems;Databus;Definition;Definitions;Electricalengineering;Electronicengineering;Electronicsystems;Informationinterchange;Railwayapplications;Railwayengineering;Railwayvehicles;Railways;Safety;Safetyengineering;Safetyrequirements;Securitymanagement;Signaldevices;Signaltransmission;Specification(approval)
【摘要】:ThisInternationalStandardisapplicabletosafety—relatedelectronicsystems(includingsub-systemsandequipment)forrailwaysignallingapplications．Thescopeofthisstandard,anditsrelationshipwithotherIECstandards,areshowninFigure1．Thisstandardisintendedtoapplytoallsafety-relatedrailwaysignallingsystems/sub-system/equipment．However,thehazardanalysisandriskassessmentprocessesdefinedinIEC62278andthisstandardarenecessaryforallrailwaysignallingsystems/sub—systems,equipment,inordertoidentifyanysafetyrequirements．Ifanalysisrevealsthatnosafetyrequirementsexist(i.e.:thatthesituationisnon-safety-related),andprovidedtheconclusionisnotrevisedasaconsequenceoflaterchanges,thissafetystandardceasestobeapplicable．Thisstandardappliestothespecification,design,construction,installation,acceptance,operation,maintenanceandmodification/extensionphasesofcompletesignallingsystems,andalsotoindividualsub-systemsandequipmentwithinthecompletesystem．AnnexCincludesproceduresrelatingtoelectronichardwarecomponents．Thisstandardappliestogenericsub-systemsandequipment(bothapplication-independentandthoseintendedforaparticularclassofapplication),andalsotosystems/sub-systems/equipmentforspecificapplications．Thisstandardisnotapplicabletoexistingsystems/sub-systems,equipment(i．e．thosewhichhadalreadybeenacceptedpriortolhecreationofthisstandard)．However,asfarasreasonablypracticable,thisstandardshouldbeappliedtomodificationsandextensionstoexistingsystems,sub-systemsandequipment．Thisstandardisprimarilyapplicabletosystems/sub—systems,equipmentwhichhavebeenspecificallydesignedandmanufacturedforrailwaysignallingapplications．Itshouldalsobeapplied．asfarasreasonablypracticable,togeneral-purposeorindustrialequipment(e．g.:powersupplies,modems,etc．),whichisprocuredforuseaspartofasafety—relatedsignallingsystem．Asaminimum,evidenceshallbeprovidedinsuchcasestodemonstrate—eitherthattheequipmentisnotreliedonforsafety,一orIhattheequipmentcanbereliedonforthosefunctionswhichrelatetosafety．Thisstandardisapplicabletothefunctionalsafetyofrailwaysignallingsystems．Itisnotintendedtodealwiththeoccupationalhealthandsafetyofpersonnel；thissubjectiscoveredbyotherstandards．
【中国标准分类号】:S70
【国际标准分类号】:45_060;93_100
【页数】:197P.;A4
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