Title of article
PowerflatteninginthefuelbundleofaCANDUreactorOriginalResearchArticle
Author/Authors
Sümer?ahin، نويسنده , , KadirY?ld?z، نويسنده , , AdemAc?r، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
12
From page
7
To page
18
Abstract
Thestrongnon-uniformityofthefissionpowerproductiondensityintheCANDUfuelbundlecouldhavebeenmitigatedtoagreatdegree.AsatisfactorypowerflatteninghasbeenachievedthroughanappropriatelyevaluatedmethodbyvaryingthecompositionoftheLWRspentfuel/ThO2mixtureinaCANDUfuelbundleinradialdirectionandkeepingfuelroddimensionsunchanged.Thiswillhelpalsotogreatlysimplifyfuelrodfabricationandallowahigherdegreeofqualityassurancestandardization.
Threedifferentbundlefuelchargesareinvestigated:(1)thereferencecase,uniformlyfueledwithnaturalUO2,(2)abundleuniformlyfueledwithLWRspentfuel,and(3)abundlefueledwithvariablemixedfuelcompositioninradialdirectionleadingtoaflatpowerprofile(100%LWRspentfuelinthecentralrod,80%LWR+20%ThO2inthesecondrow,60%LWR+40%ThO2inthethirdrowandfinally40%LWR+60%ThO2intheperipheralfourthrow).
Burn-upgradesforthesethreedifferentbundletypesarecalculatedas∼7700,∼27,300,and10,000MW.D/MTuntilreachingalowestbundlecriticalitylimitofk∞=1.06.Thecorrespondingplantoperationperiodsare170,660,and240days,respectively.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2004
Journal title
Nuclear Engineering and Design Eslah
Record number
894773
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