• Title of article

    EvaluationofintentionaldepressurizationstrategyinChinese600MWePWRNPPOriginalResearchArticle

  • Author/Authors

    K.Zhang، نويسنده , , X.W.Cao، نويسنده , , J.Deng، نويسنده , , Z.Wang، نويسنده , , L.C.Guo، نويسنده , , D.Q.Guo، نويسنده , , J.T.Yuan، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2008
  • Pages
    8
  • From page
    1720
  • To page
    1727
  • Abstract
    Intentionaldepressurizationisoneoftheeffectivestrategiesinpreventinghigh-pressuremeltejection(HPME)anddirectcontainmentheating(DCH),whichismostfeasiblefortheoperatingnuclearpowerplants(NPPs)inChina.InordertoevaluatethisstrategyofaChinese600MWePWRNPP,theplantmodelisbuiltusingSCDAP/RELAP5code.ATWS,SBO,SGTRandSLOCAareselectedasthebasecasesforanalysisofintentionaldepressurization.Theresultsshowthatopeningsafetyvalvesofpressurizermanuallywhenthecoreexittemperatureexceeds922KcanreducetheRCSpressureeffectivelyandpreventtheoccurrenceofHPMEandDCH.Severaluncertaintiessuchastheoperabilityofsafetyvalves,ex-vesselfailureandthetransitoryriseofRCSpressurearealsoanalyzedsubsequently.Theresultsshowthattheopeningofthesafetyvalvescanbeinitiatednormallyandthatopeningthreesafetyvalvesisamorefavorablestrategyintheeventofpossiblefailureofoneormoreofthesafetyvalves;theprobabilityofex-vesselfailureisreducedafterintentionaldepressurizationisimplemented;thetransitoryrisingofreactorcoolantsystem(RCS)pressurewhenthemoltencorematerialsrelocatetothelowerheadofreactorpressurevessel(RPV)willnotinfluencetheeffectofdepressurization.
  • Journal title
    Nuclear Engineering and Design Eslah
  • Serial Year
    2008
  • Journal title
    Nuclear Engineering and Design Eslah
  • Record number

    895129

    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=10&DC=895129