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
Pages
16
From page
2375
To page
2390
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
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
895951
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