Title of article
Thermal-hydraulicperformanceofprimarysystemofRBMKincaseofaccidentsOriginalResearchArticle
Author/Authors
F.D’Auria، نويسنده , , Gabaraev، B. A. نويسنده , , V.Radkevitch، نويسنده , , Sviatoslav A. Moskalev، نويسنده , , E.Uspuras، نويسنده , , A.Kaliatka، نويسنده , , C.Parisi، نويسنده , , M.Cherubini، نويسنده , , F.Pierro، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
21
From page
904
To page
924
Abstract
WithintheframeworkofanEuropeanCommissionsponsoredactivity,anoverallassessmentofthedeterministicsafetytechnologyofthe‘post-Chernobylmodernized’RBMKhasbeencompleted.Theaccidentanalysis,limitedtotheareaofdesignbasisaccident,constitutedthekeysubjectforthestudy;therefore,thenotoriousChernobylunit4eventwasoutsidethescopeoftheinvestigation.
ThepresentpaperdealswiththeevaluationoftheaccidentperformanceoftheprimarysystemoftheRBMK.Ignalina-2andSmolensk-3nuclearpowerplants(NPP)areconsidered.Thedocumentedactivityincludesfourmainparts:(a)descriptionofkeyfeaturesoftheprimarysystemforthetwoNPP;(b)identificationandcharacterizationofrelevantaccidentscenariospartofthe(DBA)area;(c)keyfeaturesandqualificationlevelofadoptedcomputationtoolsprimarilyincludingcodesandinputdecks;(d)resultsfromtheanalysisofselectedaccidentscenarios.
InthefirstpartofthepaperthelayoutcomplexityoftheRBMKsystems,includingtheemergencycorecoolingandrelatedlogicsispointedouttogetherwithmaindifferencesbetweenSmolensk-3andIgnalina-2units.
Accidentscenariossuitablefortheanalysis,secondpartofthepaper,arederivedfromrecentlyissuedInternationalAtomicEnergyAgency(IAEA)reports,fromtheavailableSafetyAnalysisReports(SAR)ofexistingRBMKNPPandfromthelistofboundingaccidentsderivedfromthealreadymentionedECProject.
ThefeaturesofKorsarandRelap5thermal-hydraulicsystemcodesdevelopedinRussiaandUS,respectively,areoutlinedinthethirdpartofthepaper,givingemphasistothequalificationlevelintherangeofparametersofinteresttoRBMKsystems.TheadoptednodalisationsresemblingIgnalina-2andSmolensk-3NPParealsodescribedincludingthedemonstrationofthequalificationlevel.
Theresults,fourthpartofthepaper,basicallyshowtheoverallRBMKsystemrobustnesswithintheDBAarea,whenthenominaloperatingconditionsconstitutethestartingconditionsfortheaccidentscenarios.However,parallelchannelinstabilitiesmaytriggerdry-outphenomenaandconsequentrodsurfacetemperatureexcursionincaseofspecialaccidenttypes.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895054
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