Title of article
VoidinducedreactivityinamixedMTRcoreOriginalResearchArticle
Author/Authors
M. Varvayanni، نويسنده , , M. Stakakis، نويسنده , , N. Catsaros، نويسنده , , M.Antonopoulos-Domis، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
11
From page
855
To page
865
Abstract
Experimentsinresearchreactorsoftenposethenecessityofvoidinsertioninseveralcorepositions.Also,sub-cooledboilingmayintroducefluctuatingquantitiesofbubbles.Thereactivitychangeanditseffectonthesafetyareimportantmattersthatmustbeassessed.Inthepresentwork,thereactivityinducedbyvoidinsertioninvariouslocationsofthepooltype,mixed(highandlowenrichmenturaniumfuel)coreoftheGreekResearchReactor,wasmeasured.Theinducedreactivityduetothevoidintroductionwasdeterminedbymeasuringthereactorperiod.Themeasuredreactivitywasfoundtobestronglyspace-dependent.ResultsobtainedwiththediffusioncodeCITATIONwerefoundingoodagreementwiththeexperiment.Conclusionsonthebestutilizationofdiffusioncodeswhencalculatinglocalvoideffectsonreactivity,inregionsofsteepfluxgradients,weredrawn.Thesensitivityofthelocalvoidreactivitytothecoreposition,aswellastothefuelenrichmentandburn-upwasexamined.Ananalyticalpointreactormodelwithtwoneutronenergygroupswasdeveloped,toinvestigatequalitativelytheeffectsofparametersrelatedtovoidreactivity.Theanalyticalresultswerefoundingoodqualitativeagreementwithmeasurementsandnumericalsimulations.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
894893
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