en50126　铁路应用软件-可靠性、有效性、可维护性和安全性的规范和示范

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1、Page1DraftprEN50126WG'sproposedtextrevisions(12March1997)Std.ref.:EN50126ProjectNr.:4675dav:Tech.Body:TC9XLanguage:ETitle:Railwayapplications-ThespecificationanddemonstrationofReliability,Availability,MaintainabilityandSafety(RAMS)Software:Word97Remar

2、ks:n/aPage75EN50126:1999ForewordThisEuropeanStandardwaspreparedbytheTechnicalCommitteeCENELECTC9X,Electricalandelectronicapplicationsinrailways.ThetextofthedraftwassubmittedtotheformalvoteandwasapprovedbyCENELECasEN 50126on1998-10-01.Thefollowingdates

3、werefixed:–latestdatebywhichtheENhastobeimplementedatnationallevelbypublicationofanidenticalnationalstandardorbyendorsement(dop)2000-04-01–latestdatebywhichthenationalstandardsconflictingwiththeENhavetobewithdrawn(dow)2000-04-01Annexesdesignated“norma

4、tive”arepartofthebodyofthestandard.Annexesdesignated“informative”aregivenforinformationonly.Inthisstandard,annexesAtoEareinformative.__________Page75EN50126:1999ContentPageIntroduction51Scope62Normativereferences73Definitions84RailwayRAMS114.1Introduc

5、tion114.2RailwayRAMSandqualityofservice114.3ElementsofrailwayRAMS124.4FactorsinfluencingrailwayRAMS144.4.1General144.4.2Categoriesoffactors144.4.3Managementoffactors184.5ThemeanstoachieverailwayRAMSrequirements194.5.1General194.5.2RAMSspecification:19

6、4.6Risk204.6.1Riskconcept:204.6.2Riskanalysis:204.6.3Riskevaluationandacceptance214.7Safetyintegrity224.8Fail-safeconcept245ManagementofrailwayRAMS255.1General255.2Systemlifecycle255.3Applicationofthisstandard316RAMSlifecycle346.1Phase1:Concept346.2Ph

7、ase2:Systemdefinitionandapplicationconditions366.3Phase3:Riskanalysis396.4Phase4:Systemrequirements416.5Phase5:Apportionmentofsystemrequirements456.6Phase6:Designandimplementation476.7Phase7:Manufacturing506.8Phase8:Installation526.9Phase9:Systemvalid

8、ation(includingsafetyacceptanceandcommissioning)546.10Phase10:Systemacceptance566.11Phase11:Operationandmaintenance576.12Phase12:Performancemonitoring586.13Phase13:Modificationandretrofit596.14Phase14:Decommissioninganddisposal60AnnexA(informa