Title of article
AnexperimentalstudyonquenchingofaradiallystratifiedheatedporousbedOriginalResearchArticle
Author/Authors
ArunK.Nayak، نويسنده , , BalRajSehgal، نويسنده , , ArmenV.Stepanyan، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
10
From page
2189
To page
2198
Abstract
Thequenchingcharacteristicsofavolumetrically-heatedparticulatebedcomposedofradiallystratifiedsandlayerswereinvestigatedexperimentallyinthePOMECOfacility.Thesandbedsimulatesthecoriumparticulatedebrisbedwhichisformedwhenthemoltencoriumreleasedfromthevesselfragmentsinwateranddepositsonthecavityfloorduringapostulatedsevereaccidentinalightwaterreactor(LWR).Theelectrically-heatedbedwasquenchedbywaterfromawatercolumnestablishedovertopofit,andlateralsowithwatercomingfromitsbottom,whichwascirculatingfromthewateroverlayerthroughdowncomers.Aseriesofexperimentswereconductedtorevealtheeffectsofthesizeofdowncomers,andtheirlocationsinthebed,onthequenchingcharacteristicsoftheradiallystratifieddebrisbeds.Thedowncomerswerefoundtosignificantlyincreasethebedquenchingrate.Tosimulatethenon-condensablegasesgeneratedduringtheMCCI,airandargonwereinjectedfromthebottomofthebedatdifferentflowrates.Theeffectsofgasflowrateanditspropertiesonthequenchingbehaviourwereobserved.Theresultsindicatethatthenon-condensablegasflowsreducethequenchingratesignificantly.Thegaspropertiesalsoaffectthequenchingcharacteristics.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2006
Journal title
Nuclear Engineering and Design Eslah
Record number
941331
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