Title of article
Scalingmethodologyforareduced-heightreduced-pressureintegraltestfacilitytoinvestigatedirectvesselinjectionlinebreakSBLOCAOriginalResearchArticle
Author/Authors
ByoungUhnBae، نويسنده , , KeoHyoungLee، نويسنده , , YongSooKim، نويسنده , , ByongJoYun، نويسنده , , GoonCherlPark، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
9
From page
2197
To page
2205
Abstract
Ascalingmethodologyforasmall-scaleintegraltestfacilitywasinvestigatedinordertoanalyzethermal–hydraulicphenomenaduringaDVI(directvesselinjection)lineSBLOCA(smallbreakloss-of-coolantaccident)inanAPR1400(advancedpowerreactor1400MWe)pressurizedwaterreactor.ThetestfacilitySNUF(SeoulNationalUniversityFacility)wasutilizedasareduced-heightandreduced-pressureintegraltestloop.TodeterminesuitabletestconditionsforsimulatingtheprototypeintheSNUFexperiment,theenergyscalingmethodologywasproposetoscalethecoolantmassinventoryandthethermalpowerforareduced-pressurecondition.Theenergyscalingmethodologywasvalidatedwithasystemcode(MARS)analysisforanideallyscaled-downSNUFmodelandthatpredictedareasonabletransientofpressureandcoolantinventorywhencomparedtotheprototypemodel.FortheactuallyconstructedSNUF,theeffectofscalingdistortionsinthetestfacilityʹsthermalpowerandtheloopgeometrywasanalyticallyinvestigated.Toovercomethelimitationofthethermalpowersupplyinthefacility,theconvectiveheattransferbetweenprimaryandsecondarysystemsatthesteamgeneratorU-tubeswasexcludedandamodifiedpowercurvewasappliedforsimulatingthecoredecayheat.FromthecodeanalysisresultsfortheactualSNUFmodel,theapplicationofthemodifiedpowercurvedidnotaffectthemajoreventsoccurringduringthetransientcondition.TheresultsrevealedthatthescalingdistortionintheactualSNUFgeometryalsodidnotstronglydisturbsignificantthermal–hydraulicphenomenasuchasthedowncomersealclearing.Thus,withanadoptionoftheenergyscalingmethodology,thethermal–hydraulicphenomenaobservedintheSNUFexperimentcanbeproperlyutilizedinasafetyanalysisforaDVIlinebreakSBLOCAintheAPR1400.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895175
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