Author/Authors :
S.Langenbuch، نويسنده , , B.Krzykacz-Hausmann، نويسنده , , K.-D.Schmidt، نويسنده , , G.Hegyi، نويسنده , , A.Kereszt?ri، نويسنده , , S.Kliem، نويسنده , , J.Hadek، نويسنده , , S.Danilin، نويسنده , , S.Nikonov، نويسنده , , A.Kuchin، نويسنده , , V.Khalimanchuk، نويسنده , , A.H?m?l?inen، نويسنده ,
Abstract :
Thedevelopmentofcoupledcodes,combiningthermal-hydraulicsystemcodesand3Dneutronkineticscodes,isanimportantsteptoperformbest-estimatecalculationsforplanttransientsofnuclearpowerplants.Forapplicationsinsafetyanalysis,thesecoupledcodesshouldbevalidatedbybenchmarkcalculationsand,preferably,bycomparisonwithplanttransientdatafromoperatingplants.Inaddition,theresultsshouldbesupplementedbyapplyinguncertaintyandsensitivityanalysismethods,whichallowtoidentifyrelevantparametersofmodelsandsolutionproceduresaffectingtheresultsandtoquantifytheirrelativeimportance.BothobjectiveswerepartoftheVALCOproject.Theaspectofvalidationispresentedin[S.Mittag,etal.,2004.Neutron-KineticCodeValidationagainstMeasurementsintheMoscowV-1000Zero-PowerFacility,inpress;T.Vanttolaetal.,2004.ValidationofcoupledcodesusingVVERplantmeasurements,inpress],theaspectofacomprehensiveuncertaintyandsensitivityanalysisforcoupledcodecalculationsisthetopicofthiscontribution.TheresultsandexperiencesobtainedbytheanalysisfortwoplanttransientsinaVVER-440andaVVER-1000,respectively,arepresentedanddiscussed.
