ML17033A035
| ML17033A035 | |
| Person / Time | |
|---|---|
| Site: | Technical Specifications Task Force |
| Issue date: | 01/31/2017 |
| From: | Coleman J Technical Specifications Task Force |
| To: | Office of Nuclear Reactor Regulation |
| Honcharik M | |
| Shared Package | |
| ML17023A007 | List: |
| References | |
| Download: ML17033A035 (23) | |
Text
Technical Specifications Task Force A Joint Owners Group Activity TSTF PresubmittalMeetingforTSTFTraveler TSTF567,Rev.0,"AddContainmentSumpTSto AddressGSI191Issues" JamieColeman SouthernNuclearOperatingCompany 1
Technical Specifications Task Force A Joint Owners Group Activity TSTF Overview
- DiscussthedrafttravelerTSTF567,"AddContainmentSump TStoAddressGSI191Issues."
- Discusswhetherthedraftprovidestechnicalinformationin sufficientdetailtoenablethestafftoconductadetailed technicalreviewandmakeanindependentassessment regardingitsacceptability.
- Discussthescheduleforsubmittingthetraveler,thefee waiverrequest,andtheNRC'sexpectedreviewschedule.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF PurposeoftheTraveler
- Thepotentialimpactofpostaccidentdebrisandchemical effectsontheEmergencyCoreCoolingSystem(ECCS)and ContainmentSpraySystem(CSS)havebeenevaluated.
- Limitshavebeenestablishedontheallowablequantitiesof containmentaccidentgenerateddebristhatcouldbe transportedtothecontainmentsump.
- However,newdebrissources,analysiserrors,ornew phenomenoncouldresultindeclaringtheECCSandCSStrains inoperable,andanimmediateplantshutdown.TheTS providesnotimetoevaluateorcorrecttheissue.
- Thetravelerprovidestimetoevaluatesuchconditionsand takeaction.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF PurposeoftheTraveler
- TheprinciplechangeinTSTF567istoprovideanewTSAction foracontainmentsumpinoperableduetothepotentialfor containmentaccidentgeneratedandtransporteddebris exceedingtheanalyzedlimits,withaCompletionTime sufficientlylongtoevaluatethenewcondition.
- ThecurrentActionsforacontainmentsumpinoperablefor anyotherreasonarenotchanged.
- ThetravelerisapplicabletoPWRplantswithimprovedTS, regardlessoftheGSI191closureoption.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF ContainmentAccidentGeneratedandTransported Debris
- Thedescriptionofcontainmentaccidentgeneratedand transporteddebrisistakenfromRG1.82,Revision4,"Water SourcesforLongTermRecirculationCoolingFollowingaLoss ofCoolantAccident,March2012.
- AccidentgenerateddebriscreatedbytheHELB(e.g.,insulation, coatings,andothermaterialsnearthebreak)andsubjecttotransport bytheHELBblowdownforces;
- Preexistingdebrisordebriscreatedbyadverseenvironmental conditionsfollowingtheaccident(e.g.,latentdebris,dirt,and unqualifiedcoatingsnotgeneratedbytheHELB)thatmaybe transportedtothecontainmentsump;and
- Chemicalreactionproductsgeneratedwithincontainmentfollowing theaccidentandtransportedtothecontainmentsump.
- Useofthisdescription doesnotincorporateRG1.82,Rev.4, intoaplant'slicensingbasis.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF DesignDecisions
- Postaccidentcontainmentdebrisaffectsthecontainment sumpandthesumpsupportstheECCSandCSS.
- ConsistentwiththephilosophyoftheImprovedStandard TechnicalSpecifications,anewspecificationwascreatedon thecontainmentsump.
- Preventsunnecessaryduplicationofrequirements
- ConsistentwithotherTSsupportsystems,includingthe RWST
- Simplerforoperatorstoapply
- TheTSTFcreatedguidancefornonISTSplantsonhowto adopttheproposedchangewithoutusingthetraveler 6
Technical Specifications Task Force A Joint Owners Group Activity TSTF NewSpecification
- Anew"ContainmentSump,"specificationisplacedattheend ofSection3.6,"ContainmentSystems."
- TS3.6.8inNUREG1430(BabcockandWilcoxplants),
- TS3.6.19inNUREG1431(Westinghouseplants),
- TS3.6.13inNUREG1432(CombustionEngineeringplants).
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Technical Specifications Task Force A Joint Owners Group Activity TSTF LCOandApplicability 8
Technical Specifications Task Force A Joint Owners Group Activity TSTF LCOandApplicability
- TheLCOBasesstates:
- [The][Two]containmentsumpisrequiredtoensurea sourceofboratedwatertosupportECCSandCSS OPERABILITY.Acontainmentsumpconsistsofthe containmentdrainageflowpaths,[designfeatures upstreamofthecontainmentsumpthatarecreditedinthe containmentdebrisanalysis,]thecontainmentsump strainers,thepumpsuctiontrashracks,andtheinletto theECCSandCSSpiping.AnOPERABLEcontainmentsump willnotberestrictedbyaccidentgeneratedand transporteddebrisandhasnostructuraldamageor abnormalcorrosionthatcouldpreventrecirculationof coolant.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF SurveillanceRequirement 10
Technical Specifications Task Force A Joint Owners Group Activity TSTF SurveillanceRequirement 11
- TheSRBasesstate:
- Periodicinspectionsareperformedtoverifythe containmentsumpandstrainersdonotshowcurrentor potential debrisblockage,structuraldamage,orabnormal corrosiontoensuretheoperabilityandstructuralintegrity ofthecontainmentsump,strainers,andassociated structures.
Technical Specifications Task Force A Joint Owners Group Activity TSTF Actions 12
Technical Specifications Task Force A Joint Owners Group Activity TSTF LCO3.0.6
- Whenthecontainmentsumpisinoperableandtheplantisin ActionA,thesupportedECCSandCSStrainsarealso inoperable.
- ImprovedTSplantscaninvokeLCO3.0.6:
- "WhenasupportedsystemLCOisnotmetsolelyduetoa supportsystemLCOnotbeingmet,theConditionsand RequiredActionsassociatedwiththissupportedsystem arenotrequiredtobeentered.Onlythesupportsystem LCOACTIONSarerequiredtobeentered."
- Therefore,whileinActionA,theECCSandCSSareinoperable butonlythecontainmentsumpActionisfollowed.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF LCO3.0.6
- LCO3.0.6alsorequiresanevaluationtodetermineifthereisa lossofsafetyfunction.Itstates:
- Inthisevent,anevaluationshallbeperformedin accordancewithSpecification5.5.15,"SafetyFunction DeterminationProgram(SFDP)."
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Technical Specifications Task Force A Joint Owners Group Activity TSTF LCO3.0.6
- TheSFDPstates:
- TheSFDPidentifieswherealossofsafetyfunctionexists.
Ifalossofsafetyfunctionisdeterminedtoexistbythis program,theappropriateConditionsandRequiredActions oftheLCOinwhichthelossofsafetyfunctionexistsare requiredtobeentered.Whenalossofsafetyfunctionis causedbytheinoperabilityofasingleTechnical Specificationsupportsystem,theappropriateConditions andRequiredActionstoenterarethoseofthesupport system.
- WhenbothtrainsofECCSandCSSaremadeinoperablebya singleinoperablecontainmentsump,thecontainmentsump TSActionsshouldbefollowed.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF LCO3.0.6
- ThelastsentenceintheSFPDwasaclarificationaddedby TSTF273,Revision2,"SFDPClarifications,"approvedbythe NRConAugust16,1999.
- ItshouldbeintheTSofmostplants.Ifnot,thesentencemay beaddedaspartofTSTF567,whichincludesthejustification fromTSTF273.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF Actions 17
Technical Specifications Task Force A Joint Owners Group Activity TSTF Actions 18
Technical Specifications Task Force A Joint Owners Group Activity TSTF OtherChanges
- Conformingchangesarealsomadeto:
- TheISTSTableofContents
- RemovaloftheexistingTS3.5.2SR
- TSBases 19
Technical Specifications Task Force A Joint Owners Group Activity TSTF ModelApplication
- Thetravelerincludesamodelapplicationforlicensee adoptionofTSTF567.
- Themodelapplicationdoesnotrequirethesubmittalofany plantspecificinformationotherthanthedescriptionofany variationsfromthetraveler,suchas:
- TSnumberingandtitles,
- AnyTSdifferences(Actions,SRs,etc.)
- Plantdesigndifferences
- GeneralDesignCriteriadifferences
- Withanyvariation,thelicenseemustexplainwhythetraveler andtheNRC'smodelsafetyevaluationarestillapplicable.
- Therefore,theTSTFrecommendsthatthistravelerbe processedasaCLIIPchange.
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Technical Specifications Task Force A Joint Owners Group Activity TSTF DISCUSSION 21
Technical Specifications Task Force A Joint Owners Group Activity TSTF ReviewFeeWaiver
- WhenTSTF567issubmittedforNRCreview,aseparateletter totheCFOwillrequestafeewaiverforthetravelerunder10 CFR170.11(a)(1).
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Technical Specifications Task Force A Joint Owners Group Activity TSTF Schedule
- TheTSTFintendstosubmitTSTF567forNRCreviewbythe endofFebruary.
- Giventhenumberofplantsthatareinterestedinusingthis traveler,werequestthattheNRCcompletetheirreviewas soonaspossible,butnolaterthantheendof2017.
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