Title of article :
ApplicationofmechanisticcriteriaofcladdingoxideshellfailuretotheanalysisofcoredegradationsimulatedinbundlemeltdowntestsOriginalResearchArticle
Author/Authors :
M.S.Veshchunov، نويسنده , , A.V.Boldyrev، نويسنده , , B.Toth، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
Inthispaper,thestronginfluenceofthecladfailurecriteriaonthecalculatedscenarioofbundledegradationwasdemonstratedonthebasisofcomparativeanalysisofPhebusFPandPBF–SFDtestsusingtheSVECHA/QUENCH(S/Q)code.Themainpeculiarityoftheproposedmechanisticcriteriaisthattheyarebasedontheactualgeometryofdegradedfuelrodsandnotonaconstant,user-definedfailuretemperature.Thisallowsbettermodellingconcerningtheformationoflocalmoltenpool(s)intheupperpartofbundleandthetimingofsubsequentmaterialsrelocationsfromthelocalmoltenpool(s).Ingeneral,themechanisticcriteriadevelopedallowonetoreasonablycalculatethebundledegradationprogressioninbothtests.Therefore,itisrecommendedtousethesenew,mechanisticcladdingfailurecriteriainthesevereaccidentsystemcodesaswell.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
