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
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
Journal title :
Nuclear Engineering and Design Eslah
