Title of article
BehaviorofunirradiatedZrbaseduraniummetalfuelunderreactivityinitiatedaccidentconditionsOriginalResearchArticle
Author/Authors
Yang-HyunKoo، نويسنده , , Chong-TakLee، نويسنده , , Je-YongOh، نويسنده , , Dong-SeongSohn، نويسنده , , M.Baryshnikov، نويسنده , , A.Chechurov، نويسنده , , B.Margulis، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
9
From page
1592
To page
1600
Abstract
Reactivityinitiatedaccident(RIA)testswith4unirradiatedZrbaseduraniummetalfuelrodswereperformedtoestablishacriterionwhichshouldbeobservedunderRIAconditions.Ofthefourtests,fuelfailureswereobservedinthetwoteststhatexperiencedthemaximumenergydepositionsof188and212cal/g,respectively.However,thefuelfailureswerenotobservedattheplaceofamaximumenergydepositionbutatthepositionwherethethermocoupleswereinstalled;onefailedatthepositionwhoselocalenergydepositionwas150cal/g,andtheotheroneattheplacewithenergydepositionof170cal/g.Thefuelfailuresseemtohaveoccurredbecauseexcessivepressure,whichwascausedbythepartialmeltingofthefuelmeat,wasappliedtothecladdingwithareducedthickness.However,otherpartsofthefuelrodsincludingtheplaceofamaximumenergydepositionmaintainedtheirintegrityandabigchangeinthetemperatureandpressureintheinternalcapsule,whichwouldbeanindicationofthefragmentationanddispersionofthefuelmeatintotheinternalcapsule,wasnotobserved.Visualinspectionalsoshowedthat,exceptforthethermocouplepositions,therewasnotraceofcladfailuresuchastheformationofbrittlecracksinthecladdingormeltingofthecladding.Therefore,fortheZrbaseduraniummetalfuelrods,itcanbeconcludedthatthethresholdenergydepositionabovewhichfragmentationanddispersionoffuelmeatintotheprimarycoolantsystemisexpectedtooccurcouldbehigherthan212cal/g.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895116
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