ML17229A298
| ML17229A298 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 03/06/1997 |
| From: | HANNAMAN G W, KARIMI R, OTIS M SCIENCE APPLICATIONS INTERNATIONAL CORP. (FORMERLY |
| To: | |
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| ML17229A297 | List: |
| References | |
| RTR-NUREG-0800, RTR-NUREG-800 SAIC-97-1008, NUDOCS 9704100061 | |
| Download: ML17229A298 (51) | |
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SAIC-97/1008'IrANALYSISOFTHERADIOLOGICALCONSEQUENCESOFAMAINSTEAMLINEBREAKOUTSIDECONTAINMENTFORTHEST.LUCIEUIAT1NUCLEARPOWERPLANTUSINGNUREG'-0800STANDARDREVIEWPLAN15.1.5APPENDIXAPreparedfor:APTE<CHEngineeringServices,Inc.Pittsburgh,PennsylvaniaPreparedby:ScienceApplicationsInternationalCorporationGermantown,MarylandandReston,VirginiaRoyKarimi,Sc.D,Steven.MirSk,P.E.,andJosephD.Price,PhDf4%~h'4iP~Reviewedby:MarkOtisApprovedby:G.W.Hannaman9704100061970404PDRADQCK05000335PPDRMarch14,1997FINAL r
1.0INTRODUCTION
~..TABLEOFCONTENTS2.0INPUTDATA..3.0ASSUMPTIONS4.0CALCULATIONS4.1'iteBoundaryandLowPopulationZoneDoseCalculations4.1.1Pre-existingTransientwithanI-131PCSEquilibriumConcentrationof60pCi/g..4.1.2ConcurrentIodineSpikewiththeOutsideContainmentMainSteamLineBreakAccident.4.1.3EvaluationofEffectsofFuelFailureaftertheMSLBAccident.4.2ControlRoomDoseCalculations4.2.1MethodsofControlRoomAnalysis..4.2.2ControlRoomSourceTermCharacterization.4.2.3ResultsoftheControlRoomDoseAnalysis...6.6~~~~~~~7.8~~~~~~~9101013~~~~o135.0SUMMARYANDCONCLUSIONS
6.0REFERENCES
~~~~~~~~~~2123AppendixAMemorandumNF-97-065fromJ.N.Kabadi(FPkL)toG.L.Boyers(FPAL),"InitialSteamGeneratorMassforSt.LucieUnit1MSLBDoseCalculations",February18,1997~.A-1AppendixBFloridaPowerandLightLetterENG-SPSL-97-0068,toStevenMirsky(SAIC)fromCarlBible(FP8rL),"St.LucieUnit1TransmittalofReview&VerificationofValues8t:InputParameters-File:EngineeringEvaluationJPN-PSL-SESS-96-076Rev.0",datedFebruary26,1997..........~....~B-1AppendixCFacsimilefromJ.KabadiandChrisBuehrigofFloridaPowerandLighttoSteveMirskyatSAIC,"ANF-88-113(P),St.LucieUnit1AssessmentofRadiologicalandRodBowEffectsforIncreasedBurnup",July1988,AdvancedNuclearFuelsCorp.,March11,1997C-1 LISTOFFIGUREFigure1ControlRoomHabitabilitySystemModel
LISTOFTABLESTable1ListandValuesofInputParametersTable2Table3Table4Table5ControlRoomAnalysisIodineSpeciesReleaseQuantitiesControlRoomAnalysisNobleGasReleaseQuantitiesControlRoomAnalysisfor1gpmSteamGeneratorTubeLeakRate......ControlRoomDoseAnalysisResults..
1.0INTRODUCTION
.,SAIChasbeencontractedbyAPTECHEngineeringServices,Inc.(APTECH)toperformalicensinganalysisoftheradiologicalconsequencesofanunisolablepostulatedmainsteamlinebreak(MSLB)outsidecontainmentaccidentattheSt.Lucie1NuclearPowerPlant.ThisanalysiswasperformedinaccordancewithNUREG-0800,theU.S.NuclearRegulatoryCommission(USNRC)StandardReviewPlan(SRP)Section15.1.5AppendixA,"RadiologicalConsequencesofMainSteamLineFailuresOutsideContainmentofaPWR",Revision2,July,1981."'hepurposeofthisanalysisistocalculatewholebodyandthyroiddosestothesiteboundary(orEAB),lowpopulationzone,andoccupantsinthecontrolroomresultingfromradionuclidereleasesduringthepostulatedMSLBaccidentoutsidecontainment.Inaddition,skindosestocontrolroomoccupantswerealsocalculated.ThesedosesarecalculatedusingsuitableconservativelicensingassumptionsasdelineatedintheSRPandtheSt.LucieFinalSafetyAnalysisReport(FSAR)andpresentedintermsoftheSt.Lucie1steamgeneratortubeprimary-to-secondarysideleakrate.
2.0INPUTDATATheinputdataforthisanalysiswasdevelopedbyreviewingandevaluatinginformationavailableintheSt.LucieUnit1FinalSafetyAnalysisReport(FSAR)"anditsTechnicalSpecifications,"alongwiththeFSARforSt.LucieUnit2."'naddition,TheNRCStandardReviewPlan(NUREG-0800)15.1.5AppendixA"'asusedforthedeterminationofiodinespikingeffects.TheFP&Lengineeringstaffprovidedsomedatadirectlyandconfirmedtheappropriatenessandapplicabilityofallinputparametervaluesusedinthisanalysis.""AllinputdataandsourceforthedataisgiveninTable1.Table1ListandValuesofInputParametersParametersatmosphericdispersionfactortositeboundary(0-2hour)atmosphericdispersionfactortolowpopulationzonebreathingratesteamgeneratorhotfullpowersecondarysidewatermassNumericalValues8.55E-5sec./m'.97E-6sec./m'.47E-4m~/sec.127,602poundsReferencePrimarycoolantsystem(PCS)watervolumeprimarycoolantsystemwatermasstimetoMSIVclosureafterMSLBI-131ThyroiddosefactortimetoSIASaftertheMSLB10,400ft2.13E+8grams70sec.1.08E+6rem/Ci66.1sec.1,3calculated1,2timetoshutdowncoolingconditionafterMSLB12,240sec.LimitonSGsecondarycoolantI-131concentration0.1E-6Ci/gNoblegaspartitionfactorintheSGandmainsteamline1.0IodinepartitionfactorinSGandmainsteamline1.0assumedassumed'ercentfailedfuelfollowiriganMSLB2.0.
%(Table1ListandValuesofInputParameters(Continued)ParametersCVCSPCSletdownflowrateCVCSI-131decontaminationfactorpre-existingPCSiodineconcentrationmaximumtimeperiodfora60pCi/giodineconcentrationcontrolroomvolumenormalcontrolHVACoutsideairintakeflowcontrolroomHVACisolationdamperclosuretimeNumericalValues40gpm1,00060.0NCi/g106hours62,700ft'50cfm35secondsReference3,43unfilteredairleakageintothecontrolroomcontrolroomrecirculationflowrateatmosphericdispersionfactortocontrolroomControlRoomHEPAfilterefficiencyPControlroomoccupancyfactorfor0to24hours24to96hours96to720hourscontrolroomHVACcharcoalfilteriodineremovalefficiencyElementaliodineOrganiciodineParticulateiodineXe-133PCSconcentrationI-131PCSconcentrationtechnicalspecificationprimarytosecondaryleakrate100cfm2,000cfm4.86E-4sec./m'9percent1.006~0.495percent95percent95percent100/8pCi/g1pCi/g1gpm 3.0ASSUMPTIONSThefollowingconservativeassumptionsweremadeinperformingthisanalysisinaccordancewiththelicensingrequirementssetforthinNUREG-0800SRP15.1.5AppendixA.Threescenarios"'reevaluatedforI-131(DEC)intheprimarycoolantsystem(PCS):(a)pre-existingequilibriumconcentrationof60pCi/g,"'b)MSLBaccidentinducedareleaseratespikeof500timesthereleaseratethatcorrespondswiththetechnicalspecificationlimitof1pCi/g,and(c)thePCSconcentrationassociatedwiththemaximumMSLBFSARcalculatedfuelfailure(fuelfailureisassumedforallfuelthatiscalculatedtoexperiencedeparturefromnucleateboiling(DNB)).2.Xe-133PCSconcentrationis100/EbarwhereEbaristheaverageBetaandGammaenergyofallnoblegasradioisotopespresentinthePCS.'"3.Forthepre-existingIodinespikePCSscenario(assumption1(a)),themaximumtechnicalspecificationallowabletimeforthisconcentrationtoexistinthePCSpriortotheplantbeingputintohotshutdownis106hours."'uringthese106hours,alliodineintroducedintothesteamgeneratorsecondarycoolantbythesteamgenerator(SG)tubeleakagewill'ccumulateintheSGsecondarycoolantwatervolumeuntiltheMSLBoccurs.Theiodineinventoryalsoincludestheinitialconcentrationof0.1pCi/gofSGsecondarywateras.'.specifiedintheFSAR."AtthetimeoftheMSLB,allIodinepresentintheentireSGwaterinventorywillbereleasedtotheatmospherewithnoiodineremovalwithintheSGinternalsormainsteamline(i.e.iodinepartitionfactor=1.0).5.TheentireinventoryofiodinepresentinbothSGsiscompletelyreleaseddirectlytotheatmospherefromtheinitiationoftheMSLBtothetimeofMSIVclosure.AfterMSIVclosureandupto'thetimeofcooldowntoshutdowncoolingsystemoperation,iodineandnoblegasescontinuetobereleaseddirectlytotheenvironmentfromtheunisolableSGatthesamerateasthetubeleakratewithnoiodineornoblegasremovalinsidetheSGormainsteamlinepiping.ThetubeleakrateisthesameconstantvaluethroughouttheaccidentscenarioeventhoughthePCSpressureisbeingreducedfrom2250psiato275psiawhichwouldcausealowertubeleakrate.7.TheprimarytosecondaryleakthroughSGtubesoccursintheunisolableSG.8.TheXe-133(DEQ)noblegasreleasedirectlytotheenvironmentisatthesamerateastheSGtubeleakratewithnoremovalwithintheSGormainsteamlines.
9.Xe-133(DEQ)noblegasdoesnotaccumulateintheSGsecondarysystempriortotheMSLB,butiscontinuouslyreleasedbythecondenserairejectorsbecauseofitschemicalform.10.TheIodinePCSconcentrationforthescenariosourcetermassumption1(b)abovedoesnotcreditanyiodineremovalbytheCVCSsystemorradioactivedecayaftertheiodinereleaserateisincreasedbyafactorof500.11.TheIodineandnoblegasPCSconcentrationforthescenariosourcetermassumption1(c)abovewasobtainedfromanAbPreportprovidedbyFPEcL""coupledwiththeassumptionthat2%ofthecoregapinventorywasreleasedtothePCS.12.AlthoughtheLPZatmosphericdispersionfactorintheFSARisforthe2to8hourperiod,thissamevalueisalsoappliedtothe0to2hourtimeperiod.13.ThecontrolroomunfilteredinleakagethroughouttheMSLBAccidentis100CFMinaccordancewithFSAR"'ontrolroomdosecalculations.
4.0CALCULATIONS..DoseimpactsfortheMSLBoutsidecontainmentaccidentwereevaluatedforthreecasescharacterizedby:1)apre-existingiodinespike,2)aconcurrentiodinespike,and3)accidentinitiated2%fuelfailurewithnoiodinespike.Hypotheticalreceptorsattheexclusionareaboundary,lowpopulationzone,andcontrolroomwereconsidered.4.1SiteBoundaryandLowPopulationZoneDoseCalculations'hefollowingequationswereusedtoperformthethyroidandtheexternalwholebodydosecalculationsassociatedwiththereleasesofI-131andnoblegases(intermsXe-133doseequivalentconcentration)afterapostulatedoutsidecontainmentmainsteamlinebreakaccident.a.ThyroiddosefromI-131D,=[A,,]x[X/g]x[DCF...]x[BR]b.ExternalwholebodydosefromPparticlesandyrays"'~8[025Ef+023Q][Ai33]x(X/g]Where:Ai3ix/QDCFf3)BRDw.s.133ThyroiddosefromI-131inhalation,(rem).DoseequivalentactivityofreleasedI-131,(Ci).0-2hourdispersioncoefficientforsiteboundary,or0-8hourdispersioncoefficientforlowpopulationzone,(sec/m').I-131Thyroiddoseconversionfactor,(rem/Ci).Breathingrate,(m'/sec).Wholebodydose(rem)fromimmersioninasemi-infinitecloudofXe-133.Averageenergyreleasebyydecay(MEV/disintegration).AverageenergyreleasebyPdecay(MEV/disintegration).Doseequivalentnoblegas(Xe-133)activityrelease(Ci).TherelevantdataforeachoftheaboveparametersaregiveninTable1.Itwasassumedthatthetotalprimarytosecondaryleakratethroughsteamgeneratorsis1gpm,(2702.8g/min).[ThePCSwaterspecificdensityof0.724isbasedon2250Psiaand575'F.]
4.1.1Pre-existingTransieJitwithanI-131PCSEquilibriumConcentrationof60pCi/gInthisscenario,itwasassumedthatI-131concentrationinthePCShasreachedanequilibriumvalueof60pCi/gwellbeforetheMSLBaccident.BasedontheSt.Lucie1technicalspecificationlimitingconditionforoperation,"'hisconditioncouldexistforabout100hoursbeforetheplantisbroughtdowntohotshutdownconditionwithin6hours.Thenoblegasconcentrationisatthetechnicalspecification"'imitof100/EpCi/g.UsingtheassumptionsandthedatalistedinSection3.0,andTable1,thefollowingdoseswherecalculated.a.Siteboundary(exclusionareaboundary)ThyroidDoseI-131activityreleaseduringthetimeperiodafterMSLBtoshutdowncoolingcondition:Pre-breakPCStoSCSI-131activitytransfer2702.8x60x10~x106x60=1032.39CiinitialactivityofI-131intheSCS,2x127,602x453.6x0.1x10~=11.58CiwsumofI-131releasedpriortoMSIVclosure1032.39+11.58+2702.8x70/60x60x10~=1044.16IodinereleaseafterMSIVclosure2702.8x60x10~x202.83=32.89Cioverremainingminutes(12,240/60-70/60).D~=[1044.16+32.90]x[8.55x10]x[1.08x10]x[3.47x10]=34.51rem2.ExternalwholebodydoseNoblegasesaredirectlyreleasedtoatmosphereafterthebreakfor204minutes.~2702.8x100/8x10~x204=55.14/8CiThevalueof8fornoblegasesinthePCSwascalculatedto0.23MEVbasedon.theconcentrationofthegasesgiveninTable12.1-3and.theaverageenergyperdisintegrationgiveninICRPpublicationNo.38.Thecalculatedbetaandgammaaverageenergyperdisintegrationwere0.15,and0.08MEV,respectively.Forthisaverageenergy,thetotalnoblegasactivityreleasedwouldbe239.7Ci.ED~a=[0.25x0.08+0.23x0.15]x[8.55x10']x[239.7]=1.2x10'em
LowpopulationzoneAnindividualinthislowpopulationzoneissubjectedtoadifferentdiffusioncoefficientthanthatofthesiteboundary.Allotherparametersaresimilartothosecalculatedabove.1.ThyroidDoseD~=[1044.16+32.90]x[7.97x10+]x[1.08x10]x[3.47x10]=3.22rem2.ExternalwholebodydoseD~a=[0.25x0.08+0.23x0.15]x[7.97x10]x[239.7]=1.1x10rem4.1.2ConcurrentIodineSpikewiththeOutsideContainmentMainSteamLineBreakAccidentInthisscenariothereactortripresultingfromprimarysystemdepressurizationassociatedwiththeMSLBcreatesaniodinespikeintheprimarysystem.SRPSection15.1.5assumesthattheiodinereleasefromthefuelrodstothePCSwouldincreasetoavalue500timesgreaterthanthe.releaseratecorrespondingtotheiodineconcentrationattheequilibriumvaluestatedintheplant'.technicalspecifications.Theequilibriumiodine(I-131)concentrationpriortothespikeisassumedtobethetechnicalspecification"'imitof1pCi/g.UsingthedataprovidedinTable1,theiodineproductionrateproducingthisequilibriumconcentrationiscalculatedbasedonthefollowingequations:RAAp~R=A,xA=C,xMXP+XR=0.693/T,~=Fx(1.0-1/DF)/Vwhere:RATl/2FVDFMXpIodineproductionrate,(Ci/sec)I-131decayandremovalrate,(persec).equilibriumactivityoftheI-131inthePCS,(Ci)8.02days,HalflifeofI-131,(6.93x10',sec)letdownflowrate,(40gpm,or0.667gals/sec)'rimarysystemcoolantvolume,(10,400ft',or7.78x104gallons)I-131decontaminationfactorintheCVCS,(1000)Primarysystemcoolantmass(2.13x10~grams)1.0x10~(persec)
XR8.56x10~(persec)C,1.0x10(Ci/g)TheequilibriumI-131productionratepriortotheaccidentis2.04x10'i/sec.UsingtheSRP"'ssumption,thespikewouldproduceanI-131productionrateof0.102Ci/sec,(500x0.00204).TocalculatethetimedependentI-131concentrationinthePCSaftertheaccident,thefollowingconservativeassumptionsweremade:aob.C.ThereleasediodineinstantaneouslymixwiththePCSwater,NocreditwillbetakenfortheiodinedilutionduetoECCSinjection.Nocreditwillbetakenforiodinedecayandremoval.LossesinPCSmassduringtheaccidentisnegligible.Basedontheaboveassumptions,theiodineconcentrationis:C(t)=C,+KtWhere:K=[0.102/M]x10'4.79x10~pCi/secttimeaftertheaccidents,(sec)Attheendofaccident,204minutesafterthebreak,theiodineconcentrationwouldbe6.86pCi/g.Iodinereleaseusingthisconcentrationwouldresultinamuchsmaller(afactorof285smaller)consequencesthatthoseanalyzedearlierinSection4.1.1.Thereforethecalculateddoses,(thyroidandexternalwholebody)atthesiteboundaryandtheLPZwouldbemuchsmallerthanthosespecifiedintheSRP,Section15.1.5.4.1.3EvaluationofEffectsofFuelFailureaftertheNISLBAccidentInthisscenario,itwasconservativelyassumedthatthetransientfollowingthesteamlinebreakwouldresultin2%failedfuel,""eventhoughtheengineeringanalysisperformedinsupportoftheSt.Lucie1FSAR,"'ndicatedthatnofuelfailureisexpectedinanoutsidecontainmentMSLBaccident.TheinsidecontainmentMSLBaccidentanalysisresultedina1.6%fuelfailure.UsingtheANFcalculation""ofcoreandfuelgapnuclideinventories,andassumingthat2percentofthefuelwouldfailfollowinganMSLBaccident,anI-131andXe-133doseequivalentconcentration(DEC)intheprimarycoolantsystemwascalculated.Forthiscalculation,itwasassumedthatthenoblegasandiodinenuclidesinthegapofthefailedfuelwouldinstantaneouslyreleasefromthefuelandmixwiththeprimarycoolantsystem.Basedonthisassumption,thePCSI-131(DEC)iscalculatedtobe1.089x102Ci/g.Assumingthatthisconcentrationwouldremainconstantthroughouttheaccidentduration,atotalof602CiofI-131(doseequivalentquantities)wouldbereleasedtotheenvironment.Thethyroiddosetoanindividualatthesiteboundaryandlowpopulationzonewouldbe:
a.Siteboundary(exclusjonareaboundary)Dose~~D~=[602]x[8.55x10']x[1.08x10]x[3.47x10]=19.3remb.LowpopulationzoneDoseD~=[602]x[7.97x10~]x[1.08x10~]x[3.47x10~]=1.8rem.Usingthesameassumptionsasindicatedabove,anXe-133(DEC)valueof1.83x10'i/gwascalculated.Assumingaconstantconcentrationoverthe204minutesdurationoftheaccident,anequivalentof1009.6CiofXe-133wouldbereleasedthroughtheaffectedsteamgenerator.a.'iteboundary(exclusionareaboundary)ExternalwholebodydoseD~a=[0.25x0.046+0.23x0.135]x[8.55x10']x[1009.6]=3.67x10'emb.LowpopulationzoneExternalwholebodydoseD~a=[0.25x0.046+0.23x0.135]x[7.97x10]x[1009.6]=3.42x10~rem4.2ControlRoomDoseCalculationsRadionuclidesreleasedfromthebrokensteamlinemaybetransportedthroughtheairtotheauxiliarybuildingwheretheymayenterthecontrolroomventilationsystem.Analysisofthispotentialscenarioinvolvesspecificationofthesteamgeneratorreleaserate,degreeofatmosphericdispersion,operationalconditionsforthecontrolroomventilationsystem,andestimationofradionuclideconcentrationsanddosesinthecontrolroom.Thissectionpresentsadiscussionofmethodsofanalysis,specificationofsourceterm,andestimationofcontrolroomdosesforthehypotheticalMSLBevent.4.2.1MethodsofControlRoomAnalysisSection15.1.5oftheSRP,RegulatoryGuide1.4,andtheTMIActionPlandocument""discusselementsofanalysesappropriatefortheestimationofcontrolroomdosesunderaccidentconditions.Thisguidancehasbeenincorporatedintoversionsofthecontrolroomhabitabilityevaluationcomputercode"'iwhichwasusedinthisanalysis.Thecentralfeatureofthecodeis solutionoflumpedparameter,.transientradionuclideactivitybalancesformulatedaroundthecontrolroom.Thetimevariationofatmosphericdispersionconditions,radionuclideingressrates,andcontrolroomventilationsystemfunctionarerepresentedthroughtimeperiodsdefinedbytheanalyst.Modelparametersareconstantduringatimeintervalbutarevariedfromonetimeintervaltothenext.Thecodeconsidersfilteredandunfilteredinflowsandremovalofcontaminantsincontrolroomventilationsystemrecirculationfiltertrains.Inanytimeinterval,theconcentrationofaradionuclideinthecontrolroomrepresentedinFigure1iscalculatedas:C=C,EXP[-a(t-t,)]+([R;J(aV)]{1-EXP[-a(t-ti,)]})where:RAj+LpFpCpVAj~C)F)+C~F~+Ci(1Ei)F3+C4(1E4)(1E~)F4F,=FractionofparentdecayingtodaughterCCPtbC,F,F~CiEqF~C4E4F4E5F~F,L,L(F,+E5F5+L~V)/VCRconcentrationatthebeginningofatimeintervalCRconcentrationofthenuclide'sparenttimeattheendofatimeintervaltimeatthebeginningofatimeintervalconcentrationatunfilteredinleakagepointnumber1unfilteredairinleakagerateatpoint1concentrationatunfilteredinleakagepointnumber2unfilteredairinleakagerateatpoint2concentrationatfilteredinflowpoint3filtrationefficiencyatfilteredinflowpoint3airinflowrateatfilteredinflowpoint3'oncentrationatfilteredinflowpoint4(CRrecirculationtrain)'iltrationefficiencyatfilteredinflowpoint4airinflowrateatfilteredinflowpoint4CRrecirculationloopfilterremovalefficiencyCRrecirculation/filtrationloopflowrateCReffluentflowrateradionuclidedecayconstantradionuclideparentdecayconstantandcontrolroomvolumeControlroomdosesforatimeintervalarecalculatedasthetimeintegraloftheaboveconcentrationmultipliedbytheappropriatedosefactor,breathingrate,andoccupancyfactor.ScenarioconditionsspecifiedinTable1aresuchthatcontrolroomventilationsystembehaviordoesnotchangeoverthetimeforthepostulatedaccident.AsdescribedinSection4.1,theradionuclidesourcetimedoeschangeoverthetimeframeofthereleaseevent.
0 Figure1ControlRoomHabitabilitySystemModelOutsideAlrIntake2(F4)OutsideAlrIntako1(Fs)Filter(Ni)Filter(NFilter(%ControlRoomVolume(v)RecirculationLoop(Fo)Unlllteredlnleakage1(Fi)UnfilteredInleakage2(Fs)FlowOut(FQ 4.2.2ControlRoomSourceTermCharacterization~~Theestimationofradionuclidesourcetermsforthepre-existingiodinespikeand2%failedfuelcasesisdescribedinSection4.1.Forthepurposesofcontrolroomdoseanalysis,thepre-existingiodinespikecaseiodinesourcetermexpressedasDECI-131isconvertedintonuclidespecificreleasequantitiesusingthedefinitionofdoseequivalent.Foriodines,thedoseequivalencyisexpressedas:A~.DCF,.=ZAJDCFJwhere:AdDCF;AJDCF)doseequivalentactivityofnuclideithyroiddoseconversionfactorfornuclideIactivityofnuclidejthyroiddoseconversionfactorfornuclidejandthesummationistakenoverall'nuclides.UsingtheiodinespeciesrelativedistributionspecifiedinFSARTable12.1-3,theaboverelationmaybesolvedforindividualspeciesactivitiesusingthedoseequivalentactivityestimatederivedinSection4.1.TheresultsofthiscalculationaresummarizedinTable2foriodinespecies.Thesourcetermforthefirst70secondsisdueprimarilytothepre-existingiodineinventoryinthesteamgeneratorwhilethereleasefortheremainingtimeintervalisduetocontinuingleakagefromthePCS.Asimilarrelationmaybeproposedforthenoblegasspecieswiththesubstitutionofaverageenergyfordoseconversionfactorinthedoseequivalencyrelation.AsstatedinSection1.4,thetotalactivityofnoblegasspeciesreleasedduring204minutesforthepre-existingiodinespikecaseis239.7Ci.UsingtherelativeconcentrationsofnoblegasspeciesreportedinFSARTable12.1-3,theindividualnoblegasreleasespresentedinTable3werecalculatedforthepre-existingiodinespikecase.Forthe2%failedfuelcase,thedistributionsofiodineandnoblegasnuclidesareknowndirectlyasthedistributionspresentinthegapinventoryandconversionusingtheDECconceptisnotrequired.Releaseestimatesforthe2%failedfuelcaseforiodineandnoblegasnuclidesarepresentedinTables2and3,respectively.4.2.3ResultsoftheControlRoomDoseAnalysisControlroomdoseswereestimatedforthepre-existingiodinespikeand2%failedfuelcasesusingthemodelsandsourcetermsdescribedinSection4.2.1and4.2,2andthecontrolroomventilationsystemparameterspresentedinTable1.TheseconditionsarethosedefinedinotheranalysesdiscussedintheSt.LucieUnit1FSAR.Fortheseconditions,thyroid,skin,andwholebodydosesovertheentiretimeframeoftheeventaresummarizedinTable4.Moredetailedoutputofthecomputercode,includingventilationsystemconditionsanddosesatsignificanttimestepsarepresentedinTable5forthepre-existingiodinespikecase.Theresultsindicate 0
~'~that,forthepre-existingiodigespikecase,themajorportionofthedoseoccursafterreleaseoftheinitialsteamgeneratorinventoryandduringatimeperiodinwhichtheportionofthisinitialpulseofactivitywhichenteredthecontrolroomisremovedbytherecirculationfilters.TheportionoftheactivitywhichisduetocontinuedleakagefromthePCSsubsequenttoreleaseoftheinitialsteamgeneratorinventoryisasmallcontributortothetotaldose.Unfilteredinleakageaccountsforapproximately80%ofthedose.ThecalculatedcontrolroomdosefortheboundingMSLBsourcetermis9.9remthyroid,1.3E-4remwholebody,and9.1E-3remskinfora1gpmSGtubeleakrate.Comparisonofthedosesforthepre-existingiodinespikeandthe2%failedfuelcasesindicatesthatthyroiddoseisdominatedbytheiodines,butthatbothiodinesandnoblegasescontributetoskinandwholebodydoses.Thenoblegascontributiontoskinandwholebodydoseforthe2%failedfuelcaseisapproximately3timesthecontributionofnoblegasestothesometissuesforthepre-existingiodinespikecase.Allofthesecalculateddosesarelessthantheirregulatorylimits."'"'
~II~0~Table2ControlRoomAnalysisIodineSpeciesReleaseQuantitiesReleases(Ci)Pre-ExistingIodineSpike2%FailedFuelNuclideI-131I-132I-133I-134I-1350to70836.4215.01,192.7132.5568.4TimePeriod(s)0to12,240862.7221.81,230.3136.7586.30to12,240528.0111.0402.0103.0215.0 Table3ControlRoomAnalysisNobleGasReleaseQuantitiesNuclideReleases(Ci)Pre-ExistingIodineSpikeTimePeriod(s)2%FailedFuelKr-85mKr-85Kr-87Kr-88Xe-131mXe-133Xe-135Xe-1380to700.0110.0070.0050.0180.0111.2650.0520.0030to12,2401.921.200.963.121.92221.249.110.500to12,2408.808.708.3919.702.40379.06.2614.20 Table4ControlRoomAnalysisfor1gpmSteamGeneratorTubeLeakRateTissueThyroidSkinWholeBodyDose(rem)Pre-ExistingIodineSpike9.99.1E-31.3E-42%FailedFuel5.59.2E-31.1E-4
TIMESTEPSTART:TMESTEPEND:Table5ControlRoomDoseAnalysisResultsPre-ExistingIodineSpikeCase0.000000E+00hr2.000000E-02hrBuildincrosssectionalaream"2:Buildinheihtm:Releaseheihtm:Effluentverticalvelocitm/s:Effluentflowratem"3/s:Horizontaldistancetorecetorm:Airintakeheihtm:Windseedm/s:Verticaldisersionclass:Horizontaldisersionclass:X/s/m"3:Flowinfromunfilteredsource1m"3/s):0.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+004.860000E-040.000000E+00Flowinfromunfilteredsource2m"3/s):0.000000E+00Filteredintakeflowsource1m"3/s:Filterefficienc41:elementalfractionoranicfractionarticulatefractionRecirculationflowratem"3/s:Recirculationfilterefficienc:elementalfractionoranicfractionarticulatefractionFilteredintakeflow2feedsrecirc:Intake2filterefficienc:elementalfractionoranicfractionarticulatefractionBottledairflowratem"3/s:Controlroomvolumem"3:4.700000E-02000000009.440000E-01.9500950099002.120000E-010.000000E+001775.200000CUMULATIVEDOSEENDTIMEHOURSWHBODYREMSKINREMTHYROIDREMLUNGREMBONEREMLIVERREM2.000E-022.535E-061.217E-042.221E-011~137E-087,989E-041.262E-03 Table5ControlRoomDoseAnalysisResultsPre-ExistingIodineSpikeCase(Continued)TIMESTEPSTART:2.000000E-02hrTIMESTEPEND:3.400000E+00hrBuildincrosssectionalaream"2:Buildinheihtm:Releaseheihtm:Effluentverticalvelocitm/s:Effluentflowratem"3/s:Horizontaldistancetorecetorm:Airintakeheihtm:Windseedm/s:Verticaldisersionclass:Horizontaldisersionclass:X/s/m"3:Flowinfromunfilteredsource1m"3/s:Flowinfromunfilteredsource2m"3/s:Filteredintakeflowsource1m"3/s:Filterefficienc01:elementalfractionoranicfractionarticulatefractionRecirculationflowratem"3/s:Recirculationfilterefficienc:elementalfractionoranicfractionarticulatefractionFilteredintakeflow2feedsrecirc:Intake2filterefficienc:elementalfractionoranicfractionarticulatefractionBottledairflowratem"3/s:Controlroomvolumem"30.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+004.860000E-040.000000E+000.000000E+004.700000E-029A40000E-01.9500.9500~99002.120000E-01.00000.000000E+001775.200000CUMULATIVEDOSEENDTIMEHOURSWHBODYREMSKINREMTHYROIDREMLUNGREMBONEREMLIVERREM3.400E+001.273E-048.280E-039.830E+001.297E-043.525E-025.559E-02 Table5ControlRoomDoseAnalysisResultsPre-ExistingIodineSpikeCase(Continued)TIMESTEPSTART:696.000000E+00hrTIMESTEPEND:720.000000E+00hrBuildincrosssectionalaream"2:Buildinheihtm:Releaseheihtm:Effluentverticalvelocitm/s:Effluentflowratem"3/s:Horizontaldistancetorecetorm:Airintakeheihtm:Windseedm/s:Verticaldisersionclass:Horizontaldisersionclass:X/s/m"3:Flowinfromunfilteredsource1m"3/s:Flowinfromunfilteredsource2m"3/s:Filteredintakeflowsource1m"3/s:Filterefficienc¹1:elementalfractionoranicfractionarticulatefractionRecirculationflowratem"3/sRecircfilterefficienc:elementalfractionoranicfractionarticulatefractionFilteredintakeflow2feedsrecirc:Intake2filterefficienc:elementalfractionoranicfractionarticulatefractionBottledairflowratem"3/s:Controlroomvolumem"3:0.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+000.000000E+006.360000E-050.000000E+000.000000E+004.700000E-02.0000.00009440000E-01.9500950099002.120000E-010.000000E+001775.200000ENDTIMEHOURSWHBODYREM7.200E+021.337E-049.140E-03.872E+001.708E-04CUMULATIVEDOSESKIN'HYROIDLUNGREMREMREMBONEREM3.540E-02LIVERREM5.584E-02 5.0SUMMARYANDCONCLUSIONSAnanalysisoftheradiologicalconsequencesofapostulatedMSLBoutsidecontainmentaccidentattheSt.LucieUnit1nuclearpowerplantwasperformedinaccordancewithSRP15.1.15.AppendixA(4).Thisanalysiswasperformedinthefollowingthreesteps.First,usingtheconservativeassumptionsintheSRP,threescenarioswereusedtocalculatetheradioisotopesourcetermreleasedtotheenvironmentfromthispostulatedaccident.Thesescenariosare:(1)pre-existingiodinespike,(2)accidentinducediodinespike,and(3)accidentinducedfuelfailure.Theboundingiodinesourcetermwascalculatedwiththepre-existingiodinespikescenario,whiletheboundingnoblegassourcetermwascalculatedwiththeaccidentinducedfuelfailurescenario.Thesecondstepinvolvedthecalculationofthesiteboundary(exclusionareaboundary)andlowpopulationzonethyroidandwholebodydoses.Thesedoseswerecalculatedusingtheboundingsourcetermsfromthefirststepandappropriateconservativeparametersforatmosphericdispersion,breathingrateanddoseconversionfactor.Thethirdstepcalculatedthethyroid,wholebody,andskindosesinsidethecontrolroomfromtheboundingsourcetermswhichweredeterminedinthefirststep.ThecontrolroomdoseswerecalculatedusingconservativeassumptionsregardingthecontrolroomHVACsystemoperation'ndtheperformanceofradionuclideabsorbingfiltersintheHVACsystem,andconservativeatmosphericdispersionparameters.Theboundingresultsofthisanalysisaretabulatedbelowandshowthemargintotheregulatorylimitssetforthin10CFR100""and10CFR50GDC19.""Alldosesarenormalizedto1gpmsteamgeneratortubeleakrate,buttheycanbelinearlyextrapolatedtohighleakrates.MSLBOutsideContainmentDoses(rem)(for1gpmSGTubeLeakRate)EAB(SiteBoundary)ControlRoomThyroidMaximumCalculated34.513.229.9WholeBodyLimitMaximumLimitCalculated3000.00367253000.00034225300.000135SkinMaximumCalculatedN/AN/A0.0092LimitN/AN/A30 AsecondcomparisonofcalculateddosestotheregulatorylimitspresentedinSRP15.1.5,AppendixA,SectionIIAcceptanceCriteriaisdelineatedbelow.MSLBSourceTermScenarioPre-AccidentIodineSpikeAccidentInitiatedIodine.SpikeCalculatedDose34.51RemThyroid0.0012RemWholeBody0.12RemThyroid0.0012RemWholeBodySRPCriteria300Rem25Rem30Rem2.5RemAsdiscussedinSection4,theaccidentinitiatediodinespikeresultsinaniodinesourcetermwhichisafactorof285lowerthanthepre-accidentiodinescenario.Alicensinganalysisoftheradiologicalconsequen'cesofamainsteamlinebreakoutsidecontainment(MSLBOC)attheSt.LucieUnit1nuclearpowerplanthasbeenperformed.AllinputdataandassumptionsarebasedonappropriateconservativeandconsistentinformationfromUSNRCregulations(i.e.standardreviewplanandcodeoffederalregulations)andSt.Lucie1plantsources(i.e.FSARandtechnicalspecifications).Theassumptionsanddatahavebeenconfirmed""byFloridaPowerandLightCompany,thelicenseewhichisoperatingSt.Lucie1.ForallpostulatedradiologicalsourcetermscenariosfortheMSLBOCaccident,thecalculatedEAB(orsiteboundary),LPZ,andcontrolroomthyroidandwholebodydosesaswellascontrolroomskindosesareconsiderablylessthantherelevantregulatorylimit.
6.0REFERENCES
1.St.LucieUnit1UpdatedFinalSafetyAnalysisReport(UFSAR),Amendment15.2.St.LucieUnit2UpdatedFinalSafetyAnalysisReport(UFSAR).3.St.LucieUnit1TechnicalSpecifications.4.NUREG-0800,USNRCStandardReviewPlan15.1.5AppendixA,"RadiologicalConsequencesofMainSteamLineFailuresOutsideContainmentofaPWR",Revision2,July,1981.5.USNRCRegulatoryGuide(R.G.)1.4,"AssumptionsUsedforEvaluatingthePotentialRadiologicalConsequencesofaLossofCoolantAccidentforPressurizedWaterReactors",Revision2,June,1974.6.USNRCR.G.1.52,"Design,Testing,andMaintenanceCriteriaforPostAccidentEngineered-Safety-FeatureAtmosphereCleanupSystemAirFiltrationandAdsorptionUnitsofLightWaterCooledNuclearpowerPlants",Revision2,March,1978.7.ICRP30,"LimitsforIntakebyWorkers",InternationalCommissiononRadiologicalProtection.8.ICRP38,"RadionuclideTransformations-EnergyandIntensityofEmissions",InternationalCommissiononRadiologicalProtection,PergamonPress.9.,MemorandumNF-97-065fromJ.N.Kabadi(FP&L)to'G.L.,Boyers(FP&L),"InitialSteamGeneratorMassforSt.LucieUnit1MSLBDoseCalculations",February18,1997.10.ABB-CECalculationA-SL2-FE-0072,Rev.00(page53of187).11.FloridaPowerandLightLetterENG-SPSL-97-0068,toStevenMirsky(SAIC)fromCarlBible(FP&L),"St.LucieUnit1TransmittalofReview&VerificationofValues&InputParameters-File:EngineeringEvaluationJPN-PSL-SESS-96-076Rev.0",datedFebruary26,1997.12.10CFRPart50,AppendixA,GDC19,"ControlRoom".13.10CFR,Part100.11,"DeterminingofExclusionArea,LowPopulationZoneandPopulationCenterDistance.
~~0 14.NUREG/CR-5659,CentrolRoomHabitabilitySystemReviewModels,H.Gilpin,ScienceApplicationsInternationalCorporation,December1990.15.NUREG-0737,"ClarificationofTMIActionPlanRequirements,"ItemIII.D.3.4,"ControlRoomHabitability,"November1980.16.NUREG-0800,USNRCStandardReviewPlan6.4,ControlRoomHabitabilitySystem,July,1981.17.FacsimilefromJ.KabadiandChrisBuehrigofFloridaPowerandLighttoSteveMirskyatSAIC,"ANF-88-113(P),St.LucieUnit1AssessmentofRadiologicalandRodBowEffectsforIncreasedBurnup",July1988,AdvancedNuclearFuelsCorp.,March11,1997.
AppendixAMemorandumNF-97-065fromJ.N.Kabadi(FPRL)toG.L.Boyers(FP&L),"InitialSteamGeneratorMassforSt.LucieUnit1MSLBDoseCalculations",February18,1997{REFERENCE9]
e~eEnto'OfficeCorresyozuKenceNF-97-065To:From:G.L.BoyersJ.N.KabadlDate:February18,1997eDepartment:ENG/NF/JB
Subject:
InitialSteamGeneratorMassforStLucleUnit1MSLBDoseCalculations
Reference:
JPNCalculationPSL-1FJF-S5-155,Revision1ThismemoprovidestheinitialmassintheSt.LucieUnit1steamgenerators.Thefullpower(HFP)valuesprovidedareverifiedtobethosefromthereferencecalculationwhichdocumentstheSt.LucieUnit1Cycle14Groundrules.TotalmasspersteamgeneratoratHFP=137,970IbmLiquidmasspersteamgeneratoratHFP~127,602IbmPreparedBy:Mis4~VerifiedBy:~~+8/~rDistribution:'C.J.BuehrigK,R.CraigC.G,O'FarrlllC.Viliyrd
[~'~AppendixBFloridaPowerandLightLetterENG-SPSL-97-0068,toStevenMirsky(SAIC)fromCarl..Bible(FP&L),"St.LucieUnit1TransmittalofReview&VerificationofValues&Input--Parameters-File:EngineeringEvaluationJPN-PSL-SESS-96-076Rev.0",datedFebruary26,1997[REFERENCE11]
FPLENG-SPSL-97-0068FEB261997ScientificApplicationsInternationalCorporation20201CenturyBoulevardGermantown,Maryland20874Attention:Mr.StevenM.MirskyManager,NuclearFacilitiesSafetySt.LucleUnit1TransmittalofReview&VerificationofValues&inputParametersFile:
Reference:
1~2.3.NRCLetterdatedJanuary23,1997fromL.A.WienstoT.F.Plunkett,"St.LucieUnit1SteamGeneratorRunTimeAnalysis".FPLPurchaseOrder00019096,BlanketRelease002toAPTECHEngineeringServices.SAICletterdatedFebruary24,1997,StevenM.MirskytoChrisBuehrig.Gentlemen:ThisletterformallytransmitstoyouourreviewandverificationofvaluesandinputparametersidentifiedbySAICinReference3.ThesevaluesandinputparametersaretobeusedbySAICtorecalculatethedoseassessmentforMSLBoutsidecontainmentinaccordancewiththeguidanceinSRP15.1.5.ThisworkwasrequestedbyNRCStaffinReference1andauthorizedbyFPLinReference2.IfyouhaveanyfurtherquestionsorneedadditionalinformationcontactChrisBuehrigat(561)467-7507orGaryBoyersat(561)694-4909.Sincerely,CarlR.BibleEngineeringManagerAat'BCRB/GLBQuuia&q;K.R.CraigC.BuehrigG.L.BoyersJ..Begley(APTECH)W.Hannaman(SAIC)
Attachment:
SAICLetter,S.M.MirskytoChrisBuehrig,dated2/24/97(4Pages)anFPLGroupcompany ENG-SPSL-97-0068C.R.BibletoSAICPage2of5ITEMPARAMETERSiteBoundaryX/Q8.55E-5sec/m'owPopulationZoneX/Q7.97E-6sec/m'AICSOURCEFSARSec2.3.4.2FSARTbl15.4.1-4REVIEWERSCOMMENTSValuesCorrect,ReferencesCorrectChangeReferenceto:FSARSec.2.3.4.3forbothitemsBreathingRatesOto8hr:3.47E-4m'/sec8to24hr:2.32EAm'/sec24to720hr:1.75E-4m'/secRegGuide1.4ReferenceCorrectChanges:8to24hr,1.75E-4m'/sec,24to720hr,2.32EAm'/secNote:Accidentdoesnotusevaluespast8hoursI-131ThyroidDoseFactor1.08E+6rem/CiInhaledICRP30Valueandreferenceiscorrect.Change:ADD:'Inhaled'rimarytoSecondaryLeak1gpmFSARSectionTechnicalSpec...ChangeReferencetoJust:TechnicalSpecification3.4.6.2.cMax.timeofOpmatorabove1uCI/grifI-131(DEC):106hours...TechnicalSpecifications3.4.8ValueCorrectReferenceCorrectChange:"HotShutdowntoHotStandby"(Ref.TST1.2,pl-9)I-131(DEC)conc.in...(PCS)1uCVgm...60uCVgm.~.TechnicalSpecifications3.4.8&fig.34-1ValueCorrectReferenceCorrectChangeUnitofmeasuretouCVgm&addthe"(DEC)"I-131(DEC)concinsecondary:0.1uCVgrFSARtbl15.2.11-5ValueCorrectReferenceCorrectChangeUnitofmeasuretouCI/gm8addthe"(DEC)"PCSGrossActivity:100/EbarTechnicalSpecification3.4.8ValueCorrectReferenceCorrectReviewedBy:Q1z.4Date:~Z.VerifiedBy:'2zC97
~l~~ENG-SPSL-97-0068C.R.BibletoSAICPage3of5ITEMPARAMETERSAICSOURCEREVIEWERSCOMMENTS14NobleGasReleaseICRP38&FSARtbl11.1-1(exampleforValue)239.7Xe-131(DEQ)CiNoaccumulationofnoblegasintheSGpriortobreak.Noblegases...(existingwords)...55.14/ECi.AverageEfornoblegasesis0.23(Ebarpof0.23+EbarTof0.084).TheCireleasedwouldbe55.14/0.23=239.7Ci(delete:'ThisCiwill....(DEQ)release)ValueCorrectReferencescorrectCHANGEDISPLAYOFVALUE&SOURCE(exampleforSource)ICRP38,'Radio....'ortheenergiesandyields.St.LucieFSARTable11.1-1forthenoblegasconcentrations182021222324CVCSPCSradwasteremovalLetdownflow=40gpmCVCSDFforiodines=1000ControlRoomHVACdamperclosetimes:a.SIAS66.1secb.35sectocloseControlRoomHVACdesignfeaturesa.M/U750cfmb.recirc2000cfmc.X/Qsd.CharFiltEffe.OccupFactorsf.Post-AccinflowControlRoomVolumeControlRoomUnfilteredInieakaeIodineChemicalComositionControlRoomHEPAEff.FSARSec.9.3.4andTable11.2-4StLucie2FASRTable15.1.5.1-1FSAR9.4FSARPg12.2-9,Sec9.4.1.3Pg12.2-8Pg15.4.1-17Sec15.4.1Sec15.4.1Sec9.4Sec9.4Sec6.4.1.3.1FSARPg12.2-8FSARSec.15.4.1FSARSec15.4.1RegGuide1.52ValuesCorrectReferencesCorrectADD(betweenDFand=)"for--Iodlnes"ValuesCorrectReferencesCorrectValuesCorrectReferencesCorrectValueCorrectReferenceCorrectValueCorrectReferenceCorrectValueCorrectReferenceCorrectValueCorrectReferenceCorrectReviewedBy:I~91Date:VerifiedBy:
ENG-SPSL-97-0068C.R.BibletoSAICPage4of5ITEMPARAMETERSAICSOURCEREVIEWERSCOMMENTS10ActivityReleaseforSteamLineBreakOutsideContainment(100%ofinitialiodineinthesecondaryside)+(iodinetransferredfromtheprimarysystemafteriodinespikeequilibriumintheprimarysystem)willprovideconservativeresults.ConservativeAssumption11aMSIVClosureSignalTimeThevalueof63.9secondsisbasedontheSt.LuciaUnit2FSARTable15.1.5.1-1forsteamlinebreakoutsidecontainment.MSIVclosureaffectstheunaffectedsteamgeneratorreleases.Inthedosecalculationswhereallthesecondarymasswillbeassumedtobereleasedfromthesteamgenerators,thistimingwillnotaffecttheresults.Thisvalueof63.9secondsis,therefore,,acceptableforthispurpose.St.LucieUnit2FSARTable15.1.5.1-111bMSIVClosureDelayTime6.9secondsSt.Lucie,Unit1FSARTable15.4.6-.2P.SL-1FJF-95-155,Rev.112CooldownDurationAfterBreak(ShutdownCoolingInitiated)St.LuciaUnit2analysisshowedthatshutdowncoolingisinitiatedat12,240secondsafterthebreak.IthasbeenstatedintheABB-CEreferencedcalculationthatthecooldownrateisnotusedinthedosecalculationasitisassumedthatalltheSGactivityisreleasedtotheatmosphere.Undersimilarconditionsthetimeof12,240secondsforinitiatingshutdowncoolingisacceptableforSt.LucleUnit1.St.LucieUnit2FSARTable15..1.5.1-1ABB-CEGaleA-SL2-FE-0072,Rev.00(page53of187)1315SteamGeneratorHotFullPowerSecondarySideWaterInventoryIodineandNobleGas'eleasesfor1%FailedFuel127,602IbmIodine:UseFSARTablevalues+5%Noblegas:UseFSARTablevaluesPSL-1FJF-95-155,Rev.1St.LucieUnit1FSAR,Table12.1-3ReviewedBy:3~yk'a,b~cfiOate:~2MVerifiedBy:4',91 ENG-SPSL-97-0068C.R.BibletoSAICPage5of5ITEMPARAMETERSAICSOURCEREVIEWERSCOMMENTSt1617Fractlonzf,GoreFuel~'.-"IFailure'CSLiquidVolume2'03'he.S+t.,L'ucfe'Unit,1.'Inside,thecontainmentsteam',linebreakanaIysishas;;1'.61,k'failed.fuel,.forcthemoist,case~it'liasbeen.,stated,lnANF<8;1,13(P)7page',13,",that;nofuel,failureis',expected,foroutsIdeKeŽcontainmentsteamlije',breakjAlsoper;FSAR.'Section;,15;-'4;6,)nside,thecontainmentsteam,line'aiiuiethan.outsIdethe:contaInmentsteamliiie.breake'vent;:A"value'of2%,fuelfailure.Isth'erefoieconservative',foruseInthedosecalculations',fo',outside,thecontainmentsteamlinebaal10,400ftThisvaluewhichappearsintheFSARTable5.1-1isalsoconsistentwiththeTechSpecvalueof-11,100ft'otalRCSvolume,whichincludesthepressurizergasvolumeof700ft.StLucieUnit.1,'FSAR,Sectlorj154,'6g7F48-'113{P),;July1988St.LucieUnit1FSARTable5.1-1St.LucleUnit1TechnicalSpecification5.4.2Shaded';item'sirepresentchained;vŽglues.ReviewedBy2.aGDate:~~VerifiedBy:C-ID:FEB24'9715:34No.035P.02Rh"~cl~~ey+oF46-.$/S/-7'7-OcbgFebruary24,l997ScienceApptleetloneInternatlonelCorporationAnEmployeoOwnedCompanyChrisBuehrigFloridaPowerandI.,ightCompany650lSouthOceanDiivcJensenBeach,Florida34957
DearMr.Buehrig:
InaccordancewithourmilestoneschedulefortheMSLBoutsidecontainmentSRPanalysistaskforSt.LucieI,Iamprovidingthefollowinglistofinputdatavaluesandassociateddtaeassumedfortlusanalysis.Tomeetourschedule,pleasereviewtheseparametersandtheirassumedvaluesandconfirminwritingthattheyarcappropriateforthislicensingconsct~ativeanalysisnolaterthanFebruary26,1997.Parameters0-2hourZ/Q(siteboundary)0-8hoursgQ(lowpopulationxone)Breathingrate)-131Thyroiddose*conversionfactorPrimarytosecondaryleakrateandHFPprimarycoolantdensity(oMaximumtimeofoperationatabnve1pCi/grofI-131(DEC)l-)31concentrationinPrimaryCaolantSystem(PCS)Listand.valuesofinputparametersVn)ues8.55x10"sec/in'.97x10'ec/m'.475t10'"/secfor0t8hrs.;2.32E-4for8-24hrs.,and1.75EAfor24to720hrs.1.08x10'ein/CiIgpm(or2,702.8gr/min(primatysystemcondition;specificdensityof0.724basedon2?SOpsiaand575F)]106hours,l100hoursofoperationabovelpCi/gr,and6hours'tobcinHot,Shutdown.)s1pCi/grTechSpec.Limit,withamaximumof60pCi/ginmode1witha~80%powerlevelSourceSt.LucieIFSARSection2.3.4.2St.LuciclFSARSection15.4,'1'able15.4.1-4USNRCRegGuide1.4(c.2.c)ICRPpublication30.St.LueiclFSARSectionTcclinicelSpecilicationLeakLimit(Scc.3.4.6.2)St.Lucia1TechSpec.3.4.&St.LucielTech.SpecSection3.4.8andFigurc3.4-120Z05Century8oulevant.Gennantown,Afatyland208T4~(305)3534550OowsllC05ancAosllccÃcecAbuyuenyue,cab'&sprinpl,AI~fa&chunAl4nlsvst,Laovertu.LotAhba.lceAndrew,Iktouioak0+t.cHeae.sanA~soatuaTactor ParametersJ-131concentrationinSecondaryC:oolantSystem(SCc))ID:ValuesO.IpCi/grFFB24'9715:34Ho.055P.05P+ool~e~Pfog~@-sPsL-97-Dab/SourceSt.LucicIFSARtableIS.2,JI-SPCSspeciTicactivitySteamlincbreakoutsidecontaiomcnt:l.MSIVclosuretimea))dtloillite~100/Ii(Eisthcsumof'thcavcragcpandycocrlricsperdisintegration)MEV]forisotopesotherthaniodide's.)mainassumplinnisthat100%oflodii)cinthcSCS(initialamountplusthattransferredaAcriodinespikeequilibriuminthcPCS)wouldbcreleasedtothcaunnsphcl'c.a)MSIS63.9secondsaAcrthobrcak,withaI.OOPallerturbinetripSt.I,ucicITech.Spec.3.4.ltSt.Lucic2FSARTableIS.J.S.I-IL.CooldowndurationafterbrcakSteamgeneratorhotfullpowersecondarysidewaterinventoryNoblegeereleereb)MS)Vclosure6secondsafb:rMSIS12,240seconds,(usingSLLucic2timedurationtnshutdowncooling,froioconditionaabove.)127,602Ibooaccumulationofnoblegases.inthcS(ipriortobrcak.NoblegasesarcdirectlyrclcascdtoatmosphcrcaJlerlhcbrcakfor204m)ou'les.-02702.8)oIOO/Ex10>>x20455.J4/I)CiavcragcEfornoblegasespcrPCSconcentrationol'SARTable11.1-1is"0.23(0.I5)Q+0.084)I:.])'YForthisavcragccocrgy,theCirclcascdwouldbc239.7(5$.14/0.23).'IItisCiwillbcusualtoreprcscn[thcXc-131(DLQ)release.St.LucieIFSARTableI5.4.6-2St.I,ucic2I'SAI<Ta'l)lc15.J.5.1-1KabaditoBoycrsmemodated2-18-1997(FP&I.)AvcragcP.valueswerccalculalcdbasedoi)dataprovidedinICRI'ublic')tion38,"RadionuclidcTraitsformatioosIiocfgyaodJotcllsitylanissions",St.LucicI,FSAR'I'ableII.I-Ilodh)eandNoblegasreleasefur1"/>>failedfuel'1-131(DHC)7.0pCi/gr.(Thyroidequivalency)Xo-133(DEC)353.6I)CJ/gr.St.LucioIFSAR'1'able12,1-3,andVSNRCR.(i.I.4Fractionofcorefuel'.61"/>>failurefortheMSf8SLI.ucicI1'SARTablo15.4.6-41'CSIitluidwater~~~~~volume)0,400cubicfeelSt.l.ucic11'SAR'I'able~l-l
~s~~foalParanietcrs]8CYCSPCSradwastereillovillID:ValuesIctdowriIIowrate.=40IymCVCSDI:=IonoFEB24'9715:35No.035P.04g+wsh~e~f7O5@5L-97-Gog~gSourceSt..Lucie1I'SARSectiori!).3.4,andTable11,2-4ControlroomJIVACIdamperclosulctimea)SIASonlowpressurizeprcssureat66.Iscc.b)danipcrclosuretimeaAcrsignalis35scc.(i.c.controf1'ooiildaniperclosesnt101.1scc.AllerMSLB)St.Lucic2I'SAR'I'ablel5.1.&.1-1St.LucioIFSARSection9.4ControlRoomIIVACdcslgnfeaturesa)normaluiitrltcrcdmakeupflowrateis750cfinSt.LucicIFSARPat,c12.2-9b)rccirculatio>>IIowrateis2000cfinc)0to8hr.Atninsphcricdispcrsinnfactor-4.116E-4sc<<jcrrbicmctcr,8-24hrvalue&.17F4,24-96hrvalue1.68&,96-720hrvalue6.361'.-5d)charcoalfilteriodinercinovalcGicicricyr)$%forelcmc>>talandorganica>>d99%forparticulateSt.Lucic)FSARI'agc,12.2-8St.LuciolFSARpage15.4.1-12St.LucioIFSAkScctioii15.4.1c)occupa>>cyfactor'.0for0-24lirs,0.6for24-96hrs.,0.4fur96to720hrs.St.LucicII'SARSectionIS.4.lControlRoomzVolumef)controlledpost-accidentfiltcrcdiiiflow450<<fin62.700cubicfeetSt,LucicIFSARSection9.4St.I.ucicIFSAR1'age)22-8ControlRoom24-lJnfiltercdlnlcakagelQOcfinSt.Lucie1FSARSectionIS4IIodllleChenucatComporition91%clcincntal,4%organic,-5%particulateSt.LucioIFSARSectionISA.IControlRoomHEPAfilterefficiency99%t)SNRCR.G.1.52 ID:FEB24'9715:55No.035P.05e(II~gncA'~e,~+~~gD4-SPSL-~7->>48'l'heabovelistconstitutesthesecondn>ilestoneofthistask.OnFebruary27,l997,lwillbcverballycommunicatingourthirdmilestonewhichwillbethepreliminaryresultsofouranalysis.Sincerely,StevenlVJ.Mirsky,P,L.Manager,Nuclear1'aciliticsSafetycc:JimBeglcy,APTECHGaryDoyers(FP&L)BillHannanian(SAl(:)
AppendixCFacsimilefromJ.KabadiandChrisBuehrigofFloridaPowerandLighttoSteveMirskyatSAIC,"ANF-88-113(P),St.LucieUnit1AssessmentofRadiologicalandRodBowEffectsforIncreasedBurnup",July1988,AdvancedNuclearFuelsCorp.,March11,1997[REFERENCE17]
r5~fi%at<hatt~gee--.s~'te"alaqa)-g<<g~'ga~4tttiSIHII,)M%I~+0IC)\~~~00(I~~CtMHI~It4~IPr~fA'/)4ko0ew~gOgvl-,g4,~+Jeooea TABLE3.3COREANDGAPFISSIONPROQUCTACTIVITIESCcQ)OesignBase14x14FuelAssemblyEOLAveragedCoreExposureof25GWd/HTUANF14x14FuelAsselblyDesignEOLAverageCoreExposureof40GMd/HTUEmbalm1-1291-131I-132i-133I-1341-135CuriesinMm2.32E>007.88Ew071.12E%081.48EeOS1.69B081.3IE408FractionofActivity.166.104.014.04.009.024Curies~p3.84E-D18.20E1061.57E+065.92E+061.52E+063.16E+06Curfesin~re3.68E+007'.89E+071.12BOS1.46E+OS1.66E+081.30E+08FractionofActivity.217.)29.019.053.012.032Curies~a7.99E-011.02E+072.14E+067.76E+061.99E+064.15E+06Cs-134Cs-134NCs-135Cs-136Cs-137Cs-138Cs-139Cs-140Cs-141Cs-142Cs-1432.75M)76.61E+062.88EIOI6.43E>061.08E+071.38E+OS1.36E+081.24E+OS8.77B977.03E+073.61E+07.155.012.155.098.155.005.003.0009.0006.0002.00024.26E+067,93E~044.46E+006.31K+051.67E+066.91E+054.07E<051.12E+055.26E+041.41E+047.21E+03Te-123MTe-125MTe-127Te-127N~~gl7.61E+013~07E+056.63E+06}.42E+06.336'.3.071..3332.56E+Ok9.20E+04g4.71E+054.74E~05~~QQ~
TABLE3.3COREANDGAPFISSIONPRODUCTACTIVITIES(CONT,)g~'gi'mva4.>DesignBase14x14FuelAssemblyEOLAveragedCoreExposureof25GWd/NU'vi.'NF14x14FuelAssemblyDesignEOLAverageCoreExposureofigNd/HTUCRgTe-129Te-129HTe-131Te-131KTe-132Te-133Te-133HTe-134Te-135CutiesinMmeFractionof-ActivityKr-BSKr-85NKr-87Kr-88Kr-897.33E+051.79E+D13.46E+07.5.04Ee076.30E+07.102.00&.004.006.0008Xe-131MXe-133Xe-133NXe-135Xe-135HXe-137Xe-1386.38EeOS1.48E+083.58E+D63.13E+073.97Ee071.44E>081.38f+DB.055.038..025.011.002.0009.002gNotexaminedinSt.LucieUnit1FSAR.Curies7.42Ee041,43Ee051.38Ee053.02E+05'5.04E+043.51E+045.63E+068.95E+043.44E+057.94E+041.30E+052.76E+05Curiesin~CX3.0BEe075.26Ee066.92Ee071.18E+071.08Ee084.12E+071.14E+DB1,47E+081.27Ee081.12E+061.70Ee073.24E+074.75Ee075.91E+076.43Ee051.46E+OB3.56Ee063.12E+073.94E+071.43E+081.37E+08FractionofActivity.027.271.017.112.154.012.024.022:002.149.01.005.008.001.072.05.034.014.002.001.002Curies~m8.33Ee051.43Ee061.18E+D61.32Ee061.67EeO/5.00E+OS2.74E+063.24Ee062.55EeOSle68EeOS1,70EeOS1.62BOS3.80E<055.91E+044.63E+047.32E+061.21K+054.36E+057.87Ee041.43E+052.75E+05OIgssggscepQIC JVThP