摘要
Inusingrisk-informedapproachesforensuringsafetyofoperatingNPPs(nuclearpowerplants),riskimportancemeasuresobtainedfromPRAs(probabilisticriskassessments)oftheplantsareintegralelementsofconsiderationinmanycases.InPSAmodelsandapplicationsassociatedwithNPPstheriskimportanceofaparticularfeature(e.g.function,system,component,failuremodeoroperatoraction)canbe,mostgenerally,dividedintotwocategories:importancewithrespecttoriskincreasepotentialandimportancewithrespecttoriskdecreasepotential.Therepresentativeofthefirstcategory,asusedforpracticalpurposes,isRAW(riskachievementworth).Representativeofthesecondcategory,asmentionedinconsiderationofriskimportance,isRRW(riskreductionworth).Itcanbeshownthatthetworiskimportancemeasures,RAWandRRW,aredependentoneachother.Theonlyparameterinthismutualdependencyisprobabilityoffailureoftheconsideredfeature.ThepaperdiscussestherelationbetweenRAWandRRWandsomeofitsimplications,includingthoseonthegeneralstrategiesforthereductionofriskimposedfortheoperationoftheconsideredfacility.Twogeneralriskreductionstrategieswhichareconsideredinthediscussionare:a)riskreductionbydecreasingthefailureprobabilityoftheconsideredfeature;andb)riskreductionwhilekeepingthefailureprobabilityoftheconsideredfeatureatthesamelevel.Simpleexamplesareprovidedtoillustratethedifferencesbetweentwostrategiesandpointtomainissuesandconclusions.
出版日期
2018年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
