Title of article :
RELAP5/MOD3.3analysisofcoolantdepletiontestsaftersafetyinjectionfailureduringalarge-breakloss-of-coolantaccidentOriginalResearchArticle
Author/Authors :
Yong-SooKim، نويسنده , , Byoung-UhnBae، نويسنده , , Chang-HwanPark، نويسنده , , Goon-CherlPark، نويسنده , , Kune-YullSuh، نويسنده , , Un-ChulLee، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Thisstudyisconcernedwithdevelopmentofacoupledcalculationmethodologywithwhichtocontinuallyandconsistentlyanalyzeprogressionofanaccidentfromthedesign-basisphaseviacoreuncoverytocoremeltingandrelocation.Experimentswereperformedtoinvestigatethecorecoolantinventorydepletionaftersafetyinjectionfailureduringalarge-breakloss-of-coolantaccidentinacoldlegutilizingtheSeoulNationalUniversityFacility(SNUF).TheSNUFisanintegraltestloopscaleddownto1/6.4inlengthand1/178inareafromtheAdvancedPowerReactor1400MWe(APR1400).TheSNUFtestsaresimulatedwiththeRELAP5/MOD3.3code.Thetestresultsrevealedthatthecorecoolantinventorydecreasedfivetimesfasterduringthesweepoutinthedowncomerthanafterterminationofthesweepout.Thesweepoutwasobservedtotakeplaceontopofspilloverfromthedowncomerregiontoexpeditethedepletionofthecorecoolantinventory.ThecalculationresultsofRELAP5/MOD3.3deviatedfromtheexperimentaldataintermsofentrainmentfromthesurfaceofcorecoolant,condensationandsweepoutinthedowncomer.Thereby,thecorecoolantlevelwascomputedtodecreasefasterthanthemeasuredfromtheexperimentduetotheoverestimatedspilloverbytheevaporationoftheentraineddropletsbytheuncoveredheaters.Notwithstandingtheoccasionaldisparities,thecodepredictionisinreasonableagreementwiththeoverallbehaviorofthetests.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
