Title of article :
EvaluatingthecontrolrodmodellingapproachusedintheSouthAfricanPBMR:comparisonofVSOPcalculationswithASTRAexperimentsOriginalResearchArticle
Author/Authors :
F.Reitsma، نويسنده , , D.Naidoo، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
13
From page :
147
To page :
159
Abstract :
Theproblemofmodellingahighlyabsorbingregioninadiffusioncalculationiswellknownandmanymethodshavebeendevelopedtoaccommodatethetransporteffectsindiffusiontheory.Inthisworktheuseoftheequivalentcross-sectionsmethodforpebblebedtypereactorsisevaluatedbyapplyingittocalculationsofcontrolrod(CR)experimentsperformedattheASTRACriticalFacilityattheRussianResearchCentre,KurchatovInstituteinMoscow.ThemeasuredreactivityworthsoftheCRssituatedinthesidereflectorarecomparedwiththecalculatedvaluesmakinguseofequivalentdiffusionparametersinVSOP.ResultsobtainedwerefavourableforCRssituatedwithinthefirstringofreflectorblocks,withlargererrorsobtainedforCRssituatedfurtherfromthecore.Anadditionalmethodthatwasinvestigatedistheuseofequivalentboronconcentrations(EBCs)torepresenttheabsorberregion.ThisisshowntobeusefulifappliedcorrectlyandwithcareespeciallyinthecaseofdifferentialCRworth.Practicaldifficultiesexistwithbothapproaches,whichmakestheinvestigationofanalternativemethod,whichshouldremovetheseshortcomings,attractive.
Journal title :
Nuclear Engineering and Design Eslah
Serial Year :
2003
Journal title :
Nuclear Engineering and Design Eslah
Record number :
894535
Link To Document :
https://search.isc.ac/dl/search/defaultta.aspx?DTC=10&DC=894535
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