ML22123A333
| ML22123A333 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 05/10/2022 |
| From: | Southern Nuclear Company |
| To: | Office of Nuclear Reactor Regulation |
| Lamb, J. | |
| References | |
| EPID L-2022-LRM-0033 | |
| Download: ML22123A333 (41) | |
Text
TuesdayMay10th,2022 VogtleUnits1&2PreSubmittalMeeting2:TSTF51,TSTF471, TSTF490,andAlternativeSourceTermLicenseAmendmentRequest
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2 Overview
- Purpose
- Recapof1st PreSubmittalMeeting
- LicenseAmendmentRequest(LAR)Overview
- Tableof Contents
- PreliminaryDoseAnalysesSummary
- ImpactofTSTFsonASTDoseAnalyses
- SubmittalandRequestedReviewSchedule
- CommentsandDiscussion
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3 Purpose Discussthefollowing:
-AnoverviewoftheLARcontents
-SNCscheduleforLARsubmittal
-RequestedLARreviewduration
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4 Recapof1st PreSubmittalMeeting
- RequesteduseofASTtoallowforpeakburnup62GWD/MTU(coveredbyRG 1.183Rev.0)
- Requestedexceptiontoallowupto40%ofrodsinanassemblyexceedRG1.183 Rev.0LHGRlimitof6.3kW/ft
- RequestedLHGRof7.5kW/ftfor40%ofrods
- RequestedtoincludeTSTF490inthesubmittal
- Meetingmaterialsandnotescanbefoundin
- ML21238A384;ML21172A131
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5 Recapof1st PreSubmittalMeeting
- PrecedentsforRG1.183Rev.0Footnote11exception Plant
%ofRodsExceed ADAMS#
Kewaunee 50 ML070430020 PointBeach 100 ML110240054 IndianPoint2 100 ML042960007 IndianPoint3 100 ML050750431 WolfCreek 10 ML19100A122 Vogtle1&2 (Requested) 40 TBD
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6 LicenseAmendmentRequestOverviewTSTFs
- TSTF490Rev.0,DeletionofEBarDefinitionandRevisiontoRCSSpecific ActivityTechSpec(ML052630462)
- TSTF51A,Rev.2,ReviseContainmentRequirementsDuringHandling IrradiatedFuelandCoreAlterations(ML040400343)
- TSTF471A,Rev.1,EliminateUseofTermCoreAlterationsinActionsand Notes(ML19101A215)
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7 LicenseAmendmentRequestOverviewASTTechnicalEvaluations
- TechnicalEvaluationsforAST:
- AtmosphericDispersionFactors
>> Meteorologicaldatausedissameasintheapprovedanalysesofrecord(AOR)
>> NewOnsite X/QdosereceptorpairsusedfornonLOCAevents(FuelBuilding,ARVdischargeto atmosphere)
- CoreandRCSSourceTerms
- LossofCoolantAccident(LOCA)
- FuelHandlingAccident(FHA)
- LockedRotorAccident(LRA)
- ControlRodEjectionAccident(CRE)
- MainSteamLineBreakAccident(MSLB)
- SteamGeneratorTubeRuptureAccident(SGTR)
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8 LicenseAmendmentRequestOverview(contd)
- Keyanalysisspecificdescriptionsandinputsincludedintheenclosures:
- ControlRoomEmergencyFiltrationSystem(CREFS)modelingspecifics
- AnalysisspecificX/Qs
- Analysisspecificgapfractions
- GenericInputs
>> RCSmassandvolumes
>> SGmassandvolumes
>> Breakflows(whereapplicable)
>> Primarytosecondaryflows(whereapplicable)
>> Atmosphericflows,leakrates,etc.
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9 LicenseAmendmentRequestOverview(contd)
- RG1.183Rev.0ConformanceTables
- ASTAccidentAnalysisInputValuesComparisonTables
- EnvironmentalQualification
- Impactsevaluatedusinglegacyapprovedapproach(TID14844)
- EQisunaffectedbytheadoptionofASTmethods
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10 LARTableofContents Enclosure 1.0SummaryofDescription 2.0DetailedDescription 3.0TechnicalEvaluation 4.0RegulatoryEvaluation 5.0EnvironmentalEvaluation 6.0References
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11 LARTableofContents Attachments
- 1. OperatingLicenseandTSMarkups
- 2. TSBasesMarkups
- 3. RG1.183ConformanceTables
- 4. LOCAAnalysis
- 5. FHAAnalysis
- 6. MSLBAnalysis
- 7. SGTRAccidentAnalysis
- 8. CREAccidentAnalysis
- 9. LRAccidentAnalysis
- 10. ASTAccidentAnalysisInputValuesComparisonTables
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12 PreliminaryDoseAnalysesSummary REM(TEDE)
Accident EAB LPZ CR AcceptanceCriteria(EAB/LPZ/CR)
LOCA 8.4 9.6 4.4 25/25/5 FHA 1.0 0.4 3.9 6.3/6.3/5 LRA
<0.1
<0.1 0.3 2.5/2.5/5 CRE*
1.5 1.8 1.1 6.3/6.3/5 MSLB**
0.2 0.2 0.2 2.5/2.5/5 SGTR***
1.6 0.9 0.6 25/25/5
- Containmentreleaselimitingforoffsite.Secondaryreleaselimitingforonsite.
- ConcurrentSpikecaseislimitingandreportedabove(bothanalyzed)
- PreaccidentSpikecaseislimitingandreportedabove(bothanalyzed)
Alldosesdemonstratemargintoregulatorylimits
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13 PreliminaryDoseAnalysesSummary Accident Discussion LOCA Limitinganalysisfordose(EAB/LPZ/CR)
FHA 1.UtilizesincreasedgapfractionsforRG1.183Footnote11exception(LHGR) 2.Unfiltered2hourreleasefromFuelBuildingislimitingbyinspection(X/Qs) 3.Nocreditforfiltrationorcontainmenthatchclosures 4.Alldosesdemonstratemargintoregulatorylimits LRA Notasignificantcontributortodose CRE Containmentreleaselimitingoffsite.Secondaryreleaselimitingforonsite MSLB Notasignificantcontributortodose SGTR Notasignificantcontributortodose
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14 PreliminaryDoseAnalysesSummary
- Highlights
- LOCA
>> Mostlimitingaccidentfortotaldose
- FHA
>> Models100%ofrodsasexceedingLHGRlimit,eventhoughonly40%couldexceed
- Usesincreasedreleasefractionsforalldamagedrods(314)
- Decaytimeis70hoursaftershutdown
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15 ImpactofTSTFsonASTDoseAnalyses
- TSTF490
- RCSequilibriuminitialdoseconcentrationsfornoblegasesbasedondoseequivalent Xenon-133at(280µCi/g)
- TSTF471andTSTF51
- Applicableinshutdownmodeswherefuelmovementorcorealterationsoccur
- FHAanalysistakesnocreditforfilteredventilationorclosureofcontainmenthatches
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16 ProposedTSChanges
- TS1.1Definitions
- TS3.3.6ContainmentVentilationIsolationInstrumentation
- T3.3.7CREFSActuationInstrumentation
- TS3.4.16RCSSpecificActivity
- TS3.7.12CREFS BothUnitsShutdown
- T3.8.2ACSources-Shutdown
- T3.8.5DCSources-Shutdown
- TS3.8.8Inverters - Shutdown
- TS3.8.10DistributionSystems-Shutdown
- TS3.9.1Boron Concentration
- TS3.9.2Unborated WaterSourceIsolationValves
- TS3.9.3NuclearInstrumentation
- TS 3.9.4 Containment Penetrations
- TS3.9.7RefuelingCavityWaterLevel
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17 TS1.1Definitions
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18 TS1.1Definitions
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19 TS3.3.6ContainmentVentilationIsolationInstrumentation
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20 TS3.3.6ContainmentVentilationIsolationInstrumentation
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21 T3.3.7CREFSActuationInstrumentation
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22 TS3.4.16RCSSpecificActivity
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23 TS3.4.16RCSSpecificActivity
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24 TS3.4.16RCSSpecificActivity
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25 TS3.4.16RCSSpecificActivity
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26 TS3.7.12CREFS BothUnitsShutdown
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27 TS3.7.12CREFS BothUnitsShutdown
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28 T3.8.2ACSources Shutdown
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29 T3.8.2ACSources Shutdown
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30 T3.8.5DCSources Shutdown
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31 TS3.8.8Inverters Shutdown
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32 TS3.8.10DistributionSystems Shutdown
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33 TS3.8.10DistributionSystems Shutdown
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34 TS3.9.1BoronConcentration
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35 TS3.9.2Unborated WaterSourceIsolationValves
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36 TS3.9.3NuclearInstrumentation
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37 TS3.9.4ContainmentPenetrations
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38 TS3.9.7RefuelingCavityWaterLevel
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39 SubmittalandRequestedReviewSchedule SNCSubmit LARJune 2022 NRCReview (Requested) andapprove LARJuly2022
- July2023 LARApproval July2023
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40 CommentsandDiscussion
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