Title of article
Thermal–hydraulicperformanceofconfinementsystemofRBMKincaseofaccidentsOriginalResearchArticle
Author/Authors
F.D’Auria، نويسنده , , Akiva Novoselsky، نويسنده , , V.Safonov، نويسنده , , E.Uspuras، نويسنده , , G.M.Galassi، نويسنده , , M.Cherubini، نويسنده , , W.Giannotti، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
15
From page
925
To page
939
Abstract
WithintheframeworkofaEuropeanCommissionsponsoredactivity,anoverallassessmentofthedeterministicsafetytechnologyofthe‘post-Chernobylmodernized’ReactorBolshoyMoshchnostyKipyashiy(RBMK)hasbeencompleted.Theaccidentanalysis,limitedtotheareaofdesignbasisaccident,constitutedthekeysubjectforthestudy;therefore,thenotoriousChernobylUnit4eventwasoutsidethescopeoftheinvestigation.
ThepresentpaperdealswiththeevaluationoftheaccidentperformanceoftheconfinementoftheRBMK.Ignalina-2andSmolensk-3NuclearPowerPlants(NPP)areconsidered.Thedocumentedactivityincludesfourmainparts:(a)descriptionofkeyfeaturesoftheconfinementforthetwoNPP;(b)identificationandcharacterizationofrelevantaccidentscenariospartofthe(DBA)area;(c)keyfeaturesandqualificationlevelofadoptedcomputationtoolsprimarilyincludingcodesandinputdecks;(d)resultsfromtheanalysisofselectedaccidentscenarios.
Inthefirstpartofthepaper,thelayoutcomplexityoftheRBMKconfinementsystems,includingthebuildingonthetopofthereactorcavityispointedouttogetherwithmaindifferencesbetweenSmolensk-3andIgnalina-2units.
Accidentscenariossuitablefortheanalysis,secondpartofthepaper,arederivedfromrecentlyissuedInternationalAtomicEnergyAgency(IAEA)reports,fromtheavailableSafetyAnalysisReports(SAR)ofexistingRBMKNPPandfromthelistofboundingaccidentsderivedfromthealreadymentionedECProject.
ThefeaturesofCocosysandRelap5thermal–hydraulicsystemcodesdevelopedinGermanyandUS,respectively,areoutlinedinthethirdpartofthepaper,givingemphasistothequalificationlevelintherangeofparametersofinteresttoRBMKconfinementsystems.TheadoptednodalisationsresemblingIgnalina2andSmolensk3NPParealsodescribedincludingthedemonstrationofthequalificationlevel.
Theresults,fourthpartofthepaper,basicallyshowtheoverallRBMKconfinementsystemrobustnesswithintheDBAarea.Theimportantroleofthereactorcavityisconfirmedandoftheventing.Thenumberofbrokenchannelscausingthedisplacementoftheupperreactorcavityplateiscalculatedintherange20–25.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895055
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