Title of article
DeterministicaccidentanalysisforRBMKOriginalResearchArticle
Author/Authors
F.D’Auria، نويسنده , , Gabaraev، B. A. نويسنده , , S.Soloviev، نويسنده , , Akiva Novoselsky، نويسنده , , Sviatoslav A. Moskalev، نويسنده , , E.Uspuras، نويسنده , , G.M.Galassi، نويسنده , , C.Parisi، نويسنده , , A.Petrov، نويسنده , , A. Radkevich، نويسنده , , L.Parafilo، نويسنده , , D.Kryuchkov، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
27
From page
975
To page
1001
Abstract
WithintheframeworkofanEuropeanCommissionsponsoredactivity,anassessmentofthedeterministicsafetytechnologyofthe‘post-Chernobylmodernized’ReactorBolshoyMoshchnostyKipyashiy(RBMK)hasbeencompleted.Theaccidentanalysis,limitedtotheareaofDesignBasisAccident,constitutedthekeysubjectforthestudy;eventsnotincludingtheprimarycircuitwerenotconsidered,aswellaseventsoriginatedfromplantstatusdifferentfromthenominaloperatingconditions.Therefore,thenotoriousChernobylUnit4eventwasoutsidethescopeoftheinvestigation.
Followingtheevaluationofthecurrentstateoftheartintheareaincludingtheidentificationofcriticalissues,targetsfortheanalysiswereestablishedtogetherwithsuitablechainsofcomputationaltools.Theoutcomesfromthispartofthestudyare(a)thelistoftransientscenarioswhoseparametervaluesareassumedtoconstitutetheboundariesfortheevolutionofanyrelevantsafetytransientand;(b)asetofcomputationaltoolswithcharacteristicsconsistentwithcurrenttechnologicalachievements,suitableforperformingsafetyanalyses.
Theavailabilityofcomputationaltools,includingcodes,nodalisationsandboundaryandinitialconditionsfortheSmolensk3NPP,broughttotheirapplicationtothepredictionoftheselectedtransientevolutionsthat,however,arenotclassifiedaslicensingstudies.Theresultsdemonstratedpropersafetymarginsandrelativelylongtimeconstantsassociatedwiththehugevaluesfortheratiosbetweenmassofmoderatorandmassofcoolantandunitgeneratedpower.
Theresultsattheitemabove,suggestedaqualitative,thoughnonrigorous,comparisonbetweenaccidentanalysisaspectsinLWRandRBMKhavingthemainpurposetoshowstrengthsinRBMKsafetyfeaturesheavilycriticizednotalwaysinaconsistentwayfollowingtheChernobylevent.
TheresultsofsupportinganalysesforthepresentpaperarediscussedinfivecompanionspapersinthisJournalvolume.Thesecond(oversix)andthethirdpaperdealwiththeRBMKMainCoolantCircuitandConfinementthermal-hydraulicperformance,respectively.KeyspecificissuesintheRBMKsafetytechnology,constitutedbyaddressingofthe“MultiplePressureTubeRupture(MPTR)”andbytheapplicationofcoupledthree-dimensionalneutron-kineticsthermal-hydraulics,arediscussedinthefourthandfifthpapers.Theproposaltoinstrumentthecorechannels(ICM=IndividualChannelMonitoring)hasbeenformulatedinthiscontextandisdiscussedinthesixthcompanionpaper.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895059
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