Title of article
UncertaintiesandprobabilitiesinnuclearreactorregulationOriginalResearchArticle
Author/Authors
RichardT.LaheyJr.، نويسنده , , RusiP.Taleyarkhan، نويسنده , , RobertI.Nigmatulin، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
7
From page
1586
To page
1592
Abstract
NuclearreactorregulationsintheUSAoriginallyspecifieddeterministiccriteriatobemetbythermal/hydrauliccodes.Asetofresultsfromasinglerunofthecodewascomparedwithasetofcriteria.Codesarenowbecoming“realistic”withuncertaintiesincorporatedintotheprocess,usuallyrequiringmanyrunsofthecode.Theresultisarangeofresultswithassociatedprobabilities.Regulationsdonotcurrentlyspecifyhowsuchresultsshouldbeevaluatedagainstacceptancecriteria.Asuggestionhasbeenmadetousealevelofconfidence(e.g.,0.95)thatthecriteriaaresatisfiedwithatleastsomespecifiedprobability(e.g.,0.95).Somevalidandinvalidwaysofdoingthisandtheirconsequencesarepresented.Itissuggestedthatanimprovedprocesswouldrelatethethermal/hydraulicoutputstomeasuresofcoredamageorsomeothersuitablemeasureofrisk.Furthermore,theuncertaintiesmodeledinthecodeshouldbecombinedwithuncertaintiesandprobabilities,e.g.,aboutfunctioningofequipmentandoperatoractions,thatarenowrepresentedintheprobabilisticriskassessment(PRA).Thetaskofcombiningthermal/hydrauliccodeswithPRAtechniquestoproduceaneffectiveandfeasibletechnologypresentsachallengetothetechnicalcommunity.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2007
Journal title
Nuclear Engineering and Design Eslah
Record number
941343
Link To Document