Title of article
Aneutronics–thermalhydraulicsmodelforpreliminarystudiesonTRADEdynamicsOriginalResearchArticle
Author/Authors
ParideMeloni، نويسنده , , MassimilianoPolidori، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
14
From page
1704
To page
1717
Abstract
Inthelastfewyearsthepossibleroleofacceleratordriversystems(ADS)foreffectivetransmutationstrategieswithfullyclosedcycleshasreceivedincreasedattentionduetotheirpotentialtoimprovetheflexibilityandsafetycharacteristicsoftransmutationsystems.ThesubstantialdifferencebetweentheneutronkineticsanddynamicbehaviorofADSandconventionalcriticalreactorshasgivenrisetoawideinternationalconsensusontheneedofanexperimentalprogramtoimprovetheirknowledgeandtovalidatecalculationmethods.TothisendtheinternationalcooperationTRADEproposedasub-criticalexperimentbasedonthecouplingofaTRIGAreactorinsub-criticalcoreconfigurationwithaprotonaccelerator(cyclotron)bymeansofaneutronspallationtarget.TheexperimentwasinitiallyconceivedintheRC1-TRIGAreactorlocatedattheENEACenterofCASACCIA(Rome,Italy)todemonstratethefeasibilityoftheacceleratordrivensystem(ADS)conceptatarepresentativepower.ThisarticlepresentsapreliminarystudyperformedwiththeRELAP5/PARCScodeonthedynamicbehaviorofsuchasysteminordertodemonstratethecodecapabilitytosupportthedesignoftheexperimentandthesafetyanalysis.ThespecificcodeversionusedjoinsthewellknowncapabilityofRELAP5totreatlightwaterreactorswiththepotentialityofPARCSmodifiedbyENEAtosimulatethethree-dimensionalneutronicsofsub-criticalsystems,i.e.totreatexternalneutronsources.PARCSmodificationsarepreliminaryassessedagainstasimpleanalyticalsolutionofthesub-criticalneutronicsoftheexperimentbasedonthekineticspseudo-potentialsmethod.Aquitedetailedmodelforthecoupledcodeisdevelopedinordertorealisticallyevaluateboththethermalfeedbackeffects,thecontrolrodactionandtheexternalsourcestrengthchanges.Awiderangeofoperationalandaccidentaltransientsofthesub-criticalreactoraresimulatedwiththecoupledmodelinordertoobtainafirstsystemresponsetoanumberofreactorelementaryeventsatdifferentsubcriticalitylevels.Thecalculationresultsshowahighqualitativeagreementwiththesub-criticalsystemphysicaltheoryunderlininghowthenumericalmodeldevelopedcouldbeausefultoolforthedefinitionoftheoperationalproceduresandtheinvestigationofaccidentalconditions;moreovertheaccidentaltransienttrendshighlighttheinherentsafetybehavioroftheTRIGAresearchreactorsthatmakesthemextremelysuitableforthecouplingofthedifferentcomponentswithaquitesimplelicensingprocedures.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2007
Journal title
Nuclear Engineering and Design Eslah
Record number
941353
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