ML17326A193

Forwards 20 Revised & Eight New TS Nuregs,Nei TS Task Force (TSTF) Traveler Numbers TSTF-17,rev 2,TSTF-37,rev 2,TSTF-58, Rev 1,TSTF-59,rev 1,TSTF-107,rev 4,TSTF-169,rev 1,TSTF-197, Rev 2,TSTF-204,rev 1,TSTF-207,rev 3 & TSTF-230,rev 1

ML17326A193
Person / Time
Issue date:	06/23/1999
From:	DAVIS J W NUCLEAR ENERGY INSTITUTE (FORMERLY NUCLEAR MGMT &
To:	BECKNER W D NRC (Affiliation Not Assigned)
References
PROJECT-689, RTR-NUREG-1430, RTR-NUREG-1431, RTR-NUREG-1432, RTR-NUREG-1433, RTR-NUREG-1434 NUDOCS 9907120272
Download: ML17326A193 (65)

Text

NUCLEARENERGYINSTITUTEJamesW.DavisDIRECTOROPERATIONSDEPARTMENT,NUCLEARGENERATIONJune23,1999Dr.WilliamD.Beckner,BranchChiefTechnicalSpecificationsBranchOfficeofNuclearReactorRegulationU.S.NuclearRegulatoryCommissionWashington,DC20555-0001

SUBJECT:

ForwardingofRevisedTSTFsandNewTSTFsPROJECTNUMBER:689

DearDr.Beckner:

Enclosedare20revisedandeightnewTechnicalSpecificationNUREGsNEITechnicalSpecificationTaskForce(TSTF)Travelers.ThisletteralsotransmitsnineeditorialchangesandthestatusofallcurrentlypendingTechnicalSpecificationBulletins(TSBs).RevisedtravelersareTSTF-17,Rev.2,TSTF-37,Rev.2,TSTF-58,Rev.1,TSTF-59,Rev1,TSTF-107,Rev.4,TSTF-169,Rev.1,TSTF-197,Rev.2,TSTF-204,Rev.1,TSTF-207,Rev.3,TSTF-230,Rev.1,TSTF-262,Rev.1,TSTF-263,Rev.2,TSTF-265,Rev.1,TSTF-266,Rev.1,TSTF-273,Rev.1,TSTF-280,Rev.1,TSTF-283,Rev.1,TSTF-284,Rev.2,TSTF-309,Rev.2andTSTF-316,Rev.1.ThesetravelersweremodifiedasaresultoffeedbackanddiscussionswithNRCstaff.ThenewtravelersareTSTF-333,Rev.0,TSTF-334,,Rev.0,TSTF-335,Rev.0,TSTF-336,Rev.0,TSTF-337,Rev.0,TSTF-338,Rev.0,TSTF-339,Rev.0andTSTF-340,Rev.0.AlsoincludedinthistransmittalareeditsBWROG-ED-4,GEOG-ED-48,GEOG-ED-49,GEOG-ED-50,GEOG-ED-51,NRC-ED-13,NRC-ED-14,WOG-ED-18andWOG-ED-19.17761STREET,NWSUITE400WASHINGTON.OC20006.3708PHONE202.739.8105FAX202.785.1898jwdnei.or9Hnc1osure3 r

Mr.WilliamD.Beckner,BranchChiefJune23,1999Page2TSBstatusisasfollows:oTSB-2,Rev.0hasbeenincludedinTSTF-310.TSB-3,Rev.0hasbeenprocessedasNRC-ED-4.TSB-7,Rev.0hasbeenincorporatedwithrelatedmaterialinTSTF-338.TSB-12,Rev.0isincorporatedbyTSTF-263.TSB-15,Rev0hasbeenincorporatedinTSTF-340.TSB-16,Rev.0hasbeenrejectedbyWOG.Duetomultipledesigns,thisisnotagenericchange.Thisissueshouldbeaddressedasnecessaryonaplantspecificbasis.TSB-17,Rev.0isstillunderevaluation.WOGisprovidingadraftresolutionofthepressurizerlevelpositionforreviewbyBWOGandGEOG.ThesteamgeneratorlevelportionrequiresevaluationwhichwilllikelyextendbeyondthedeadlineforinclusionintoRevision2oftheITSNUREGs.TSB-18,Rev.0isunderevaluationwhichwilllikelyextendbeyondthedeadlineforinclusionintoRevision2oftheITSNUREGs.TSB-19,Rev.0issimilartoTSTF-164.TheTSTFrecommendsapprovalofTSTF-164ratherthanprocessingTSB-19.oTSB-20,Rev.0isunderevaluationbyWOG.TSB-21,Rev0concerningReactorCoolantSystemSpecificActivi:yLCO3.4.16isstillunderevaluationbytheTSTF.AdditionaldialogueisrequiredbetweentheTSTFandNRC.TheTSTFalsowithdrawsTSTFs-270and288andtheyhavebeenaddressedinTSTF-284,Rev.2.Also,asexplainedinourmeetingJune16,1999,theTSTFrequestsyoureconsideryourrejectionofTSTF-41.Anupdatedprioritylistisalsoenclosed.Pleasecontactmeat(202)739-8105orVinceGilbertat(202)739-8138ifyouhaveanyquestionsorneedtomeetwithindustryexpertsontheserecommendedchanges.Sincerely,hv'P~~JamesW.DavisEnclosuresc:DeborahL.JohnsonStewartL.MagruderNRR-DRPMTechnicalSpecificationTaskForce e

(WOG-139,Rev.0)Indust.y/TSTFStandardTechnicalSpecificationChangeTravelerClarifytheIceBasket20BasketWeightCriteriaClassification:1)CorrectSpecificationsNUREGsAffected:[1430~14311432it1433Q1434TSTF-335Description:Theproposedchangewillmovethecriteriaforselectinganadditional20icebasketsforweighingifoneofthcrandomlyselectedbasketsweightfallsbelowtheTechnicalSpecification(TS)requiredminimum&omthebasestotheTS.SurveillanceRequirement(SR).ThiscriterionwasincludedintheTSSRinPhaseIIoftheWOGMeritTS'sandwasmovedtothebasesinPhaseIILAdditionally,thewordingoftheSRwillberevisedtoeliminateanyconfusionovertheTSSRstatementthat"each"icebasketcontainsgreaterthanorequalto[1400]lboficesinceitwillprovide,asapartoftheTSSR,thestepstotakeifoneormorebasketsareidentifiedweighinglessthantherequiredminimumandthattheweightrequirementsareforthebeginningoftheoperatingcycle.Finally,thesurveillance&equencywillberevised&om9monthsto18monthswhichwillthenbeinaccordancewiththemajorityofthcicecondenserplantssurveillancefrequencies.Justification:ThebasicrequirementfortheiceweightintheicecondenseristoensureasufficientmassoficeisavailabletocondensethesteamproducedbyaLOCAthusensuringthepeakcontainmentpressureismaintainedbelowdesignlimitsfollowingadesignbasisaccident(DBA).Aspecifiedvalueoficeforeachicebasketisrequiredtoprovideanevendistributionoficeintheicecondenser.Thcrequirementtoweighadditionalbaskets&omthesamebayinwhichoneormoreicebasketswereidentifiedasbeingbelowtheminimumspecifiedweightensuresthatnolocalzoneexiststhatisgrosslydeficientinice.SuchazonecouldexperienceearlymeltoutduringaDBAtransient,creatingapathforsteamtopassthroughtheicecondenserwithoutbeingcondensed.Placingthestatementrequiringthesamplingof20additionalbasketsinabayintheTSSRdoesnotresultinareductionintherequirementsassociatedwiththeice,condenser.Instead,thiswillensureacommonunderstandingandimplementationofthe'requirementswhenar.icebasketisidentifiedasbeingunderweight.Atpresent,theTSSRonlystatesthat"eachbasketcontain>[1400]lbofice."NoguidanceisprovidedintheTSastowhatactiontotakeforanunderweightbasket.Thepresentwordingcouldallowtheincorrectinterpretationthattheicccondenserisinoperablewhenasingleunderweightbasketisidentified.PlacingthcpreviouslydescribedstatementbackintotheTSandrevisingtheremainderoftheSRtoclarifythewordingwouldensureaclearunderstandingoftheactionsnecessaryforidentifiedunderweightbaskets.TheclarificationthattheweightrequirementisapplicabletothebeginningofthecycledoesnotchangethepresentintentoftheTSbutensuresthereisnoconfusionthattheweightdocumentedintheSRistheweightrequiredatthebeginningofthecyclesincetheweightattheendoftheoperatingcyclemaybelessthanthisduetosublimation.ThisdoesnotresultinachangetotheintentorimplementationoftheTSsinceasublimationallowancewasprovidedintheSRweightrequirement.Theincreasetoan18month&cquencydoesnotresultinanoverallreductionintheend-of-cycleiccweightaslongaseitheraplantspecificanalysisshowsasufficientmarginoficeintheicccondensertoaccountforsublimationortherequiredminimumiceweightasspecifiedintheSRisadjustedupwardtoaccountfortheincreasedsublimationtime.EitherofthesemethodswillallowforsublimationoverthclongerSurveillanceintervalwithoutadecrcascbelowtheminimumrequirediceweightattheendoftheoperatingcycle.IndustryContact:Buschbaum,DennyNRCContact:Giardina,BobRevisionHistory(254)897-5851301-314-3152dbuschbltuelectric.cornIbb1nrc.govOGRevision0RevisionStatus:ActiveNextAction:NRCRevisionProposedby:SequoyahTravelerRev.2.Copyright(C)1998,ExcelServicesCorporation.UsebyExcelServicesassociates,utilityclients,andtheU.S.NuclearRegulatoryCommissionisgranted.Allotheruscwithoutwrittenpermissionisprohibited.etl5199 (WOO-139,Rev.0)TSTF-33'GRevision0RevisionStatus:ActiveNextAction:NRCRevisionDescription:OriginalIssueOwnersGroupReviewInformationDateOriginatedbyOG:1I-Jun-99OwnersGroupComments(NoComments)OwnersGroupResolution:ApprovedDate:11-Jun-99TSTFReviewInformationTSTFReceivedDate:11-Jun-99DateDistributedforReview11-Jun-99OGReviewCornpleted:~BWOG~WOG~CEOGatr,BWROGTSTFComments:(NoComments)TSTFResolution:ApprovedDate:15-Jun-99NRCReviewInformationNRCReceivedDate:16-Jun-99NRCComments:(NoComments)FinalResolution:NRCActionpendingFinalResolutionDate:IncorporationIntotheNUREGsFiletoBBS/LANDate:NUREGRevincorporated:AffectedTechnicalSpecificationsTSTFinformedDate:SR3.6.15.2IceBed(IceCondenser)TSTFApprovedDate:SR3.6.15.2BasusIceBed(iceCondenser)SR3.6.15.3IceBed(IceCondenser)SR3.6.15.3BasesIceBed(Ice,Condenser)TravelerRcv.2.Copyright(C)l998,ExcelServicesCorporation.UscbyExce!Servicesassociates,utilitydients,andtheU.S.hluclearRegulatoryCommissionisgranted.Allotherusewithoutwrittenpermissionisprohibited.6/IS/99 0

73!r-33<Attachment1TechnicalSpecification3.6.15NoSignificantHazardsConsideration NOSIGNIFICANTHAZARDSCONSIDERATIONDETERMINATION[Utili,tyName]hasconcludedthatoperationof[PlantName]Unit[I],inaccordancewiththeproposedchangetothetechnicalspecificationsforoperatinglicense(s)],doesnotinvolveasignificanthazardsconsideration.[UtilityName]'sconclusionisbasedonitsevaluation,inaccordancewith10CFR50.91(a)(1),ofthethreestandardssetforthin10CFR50.92(c).A.Theroosedamendmentdoesnotinvolveasiificantincreaseintherobabilitorconseencesofanaccidentreviouslevaluated.TheproposedTSamendmentsdiscussedbelowcannotincreasetheprobabilityofoccurrenceofanyanalyzedaccidentbecausetheyarenottheresultorcauseofanyphysicalmodificationtotheicecondenserstructures,andforthecurrentdesignoftheicecondenser,thereisnocorrelationbetweenanycrediblefailureandtheinitiationofanypreviouslyanalyzedaccident.Regardingtheconsequencesofanalyzedaccidents,theproposedamendmentprovidesfortheactionsrequiredifoneozmoreicecondensericebasketsaredeterminedtoweighbelowtheminimumspecifiedvaluetobemadeapartoftheTSsurveillancerequirement(SR)insteadofbeinglocatedinthebases.ThisensuresconsistentinterpretationoftherequirementsoftheTS.TheclarificationoftheresponserequiredifoneormoreicebasketsinagivenbayisdeterminedtobeunderweightensuressufficienticeismaintainedineachbaytopreventearlymeltoutinalocalzonefollowingaDBAandthattherequiredoveralliceweightismaintainedintheicecondenser.Additionally,theclarificationthattheweighi.requirementisapplicabletothebeginningofthecycledoesnotchangethepresentintentoztheTSbutensuresthereisnoconfusion,sincetheweightattheendoftheoperatingcyclemaybelessthanthatspecifiedintheSRduetosublimation.Thisdoesnotresu'tinachange"otheintentorimplementationoftheTSsinceasublimationallowancewasprovidedintheoriginalSRweightrequirement.Theseclarificationsdonotresultinanyaffectonplantequipment,'roperationandtheactionstakenauringtheimplementationoftherevisedTSwillbethesameaspriortotherevision.Therefore,theclarificationoftheserequirementswillnotincreasetheconsequencesofanyaccidentpreviouslyevaluated.

TheproposedamendmentalsorevisestheSurveillancefrequencyfromevery9monthstoevery18monthssuchthatitwillcoincidewithrefuelingoutages.TheoriginaliceweightrequirementsfortheicecondensersurveillanceincludedaconservativeallowanceforicelossthroughsublimationtoensurethedesignweightlowerlimitwasnotexceededduringtheSurveillanceinterval.Verificationthatsufficienticeismaintainedintheicecondenserisperformedatthebeginningofeachoperatingcycletoensurethedesignminimumweightlimitisnotexceededattheendoftheinterval.Therefore,increasingtheSurveillancefrequencydoesnotaffecttheicecondenseroperationoraccidentresponsesincesufficienticeismaintainedtoaddressthelimitingdesignbasisaccident(s)(DBAs)andtheproposedamendmentwillnotincreasetheconsequencesofanyaccidentpreviouslyevaluated.Theroosedamendmentdoesnotcreatetheossibilitofanewordifferentkindofaccidentfromanaccidentreviouslevaluated.TheinclusionoftheactionrequiredforanunderweighticebasketintheTSSR,insteadofinthebasesoftheTS,providesfortheconsistentinterpretationoftherequirement.Theclarificationoftheresponserequiredifoneormoreicebasketsinagivenbayisdeterminedtobeunderweightensuressufficienticeismaintainedineachbaytopreventearlymeltoutinalocalzonefollowing,aDBAandthattherequiredoveralliceweightismaintainedintheicecondenser.Additionally,theclarificationthattheweightrequirementisapplicabletothebeginningofthecycledoesnotchangethepresentintentoftheTSbutensuresthereisnoconfusion,sincetheweightattheendoftheoperatingcyclemaybelessthanthatspecifiedintheSRduetosublimation.ThisdoesnotresultinachangetotheintentorimplementationoftheTSsinceasublimationallowancewasprovidedintheoriginalSRweightrequirement.Theoperationandmaintenanceoftheicecondenseranditsassociatedequipmentwillnotchangeasaresultoftheseclarifications.Therefore,theimplementationoftheseclarificationswillnotcreate,thepossibilityofaccidentsorequipmentmalfunctionsofanewordifferentkindfromanypreviouslyevaluated.TheproposedamendmentalsorevisestheSurveillance 75+F-3)xfrequencyfromevery9monthstoevery18monthssuchthatitwillcoincidewithrefuelingoutages.TheoriginaliceweightrequirementsfortheicecondenserSurveillanceincludedaconservativeallowanceforicelossthroughsublimationtoensurethedesignminimumweightlimitwasnotexceededduring'theSurveillanceinterval.Theproposedamendmentensuresanadequateamountoficeismaintainedintheicecondenserbyeitheranincreaseintherequirediceweighttoaddresstheincreasedsublimationtimeorbyaplantspecificanalysisjustifyingtheallowedweight,thusensuringthedesignweightlowerlimitisnotexceededattheendoftheinterval.TheicecondenserservestolimitthepeakpressureinsidecontainmentfollowingaLossofCoolingAccident(LOCA)andsufficienticewouldbeavailableatalltimestokeepthepeakcontainmentpressurebelowthedesignlimit.Therefore,increasingtheSurveillancefrequencywillnotaffecttheicecondenseroperationoraccidentresponsesincesufficienticeismaintainedtoaddressthelimitingDBAsandtheproposedamendmentwillnotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Theroosedamendmentdoesnotinvolveasiificant.reductioninamarinofsafetTheproposedamendmentallowsfortheconsistentinterpretationoftherequitedactionsifanicebasketisdeterminedtoweighlessthantherequiredminimum.Theinclusionoftheseactj.onsintheTSSRinsteadofintheTSbasesassuresthecorrectactionswillbetakenasintendedbytheTSs.Theclarificationofthe.responserequiredifoneormoreicebasketsinagivenbayisdeterminedtobeunderweightensuressufficienticeismaintainedineachbaytopreventearlymeltoutinalocalzonefollowingaDBAandthattherequiredoveralliceweightismaintainedintheicecondenser.Additionally,theclarificationthattheweightrequirementisapplicabletothebeginningofthecycledoesnotchangethepresentintentoftheTSbutensuresthereisnoconfusion,sincetheweightattheendoftheoperat'ingcyclemaybelessthanthatspecifiedintheSRduetosublimation.ThisdoesnotresultinachangetotheintentorimplementationoftheTSsinceasublimationallowancewasprovidedintheoriginalSRweightrequirement.TheproposedclarificationsdonotresultinorhaveanyaffectontheoperationormaintenanceofanyplantequipmentsY

/Thusthedesignlimitsforthecontinuedsafe'functionofthecontainmentstructurefollowingaDBAarenotexceededduetothischangeandthereforetheproposedamendmentdoesnotinvolveareductioninamarginofsafety.TheicecondensersystemisprovidedtoabsorbthermalenergyreleasesfollowingaLOCAandtolimitthepeakpressureinsidecontainment.ThecontainmentanalysisshowsthattheproposedamendmenttorevisetheSurveillancefrequencyfromevery9monthstoevery18monthswillnotresultinanincreasetothepeakcontainmentpressurefollowingaLOCAsincetheminimumiceweightlimithasalsobeenadequatelyaddressedensuringthatsufficienticeisavailableattheendoftheSurveillanceinterval.Therefore,increasingtheSurveillancefrequencywillnotaffecttheicecondenseroperationoraccidentresponsesincesufficienticeismaintainedtoaddressthelimitingDBAsandthedesignlimitsforthecontinuedsafefunctionofthecontainmentstructurefollowingaDBAarenotaffected.Forthesereasons,theproposedamendmentdoesnotinvolveareductioninamarginofsafety.V.ENVIRONMENTALIMPACTCONSIDERATIONTheproposedchangedoesnotinvolveasignificanthazardsconsideration,asignificantchangeinthetypesoforsignificantincreaseintheamountsofanyeffluentsthatmaybereleasedoffsite,orasignificantincreaseinindividualorcumulativeoccupationalradiationexposure.Therefore,theproposedchangemeetstheeligibilitycriteriaforcategoricalexclusionsetforthin10CFR51.22(c)(9)~Therefore,pursuantto10CFR51.22(b),anenvironmentalassessmentoftheproposedchangeisnotrequired.

InsertAl678.-3)sIceBedgceCondenser)3.6.15SURILLANCEREUIREMENTScontinuedSURVEILLANCEFREQUENCYSR3.6.15.2Verifytotalweightofstoredice>=[2,721,600)lbby:4nof181DELETEa.Weighingarepresentativesampleof>=14'tsaneriibasketco]lbofice;atthebeginningofeachoperatingcycleb.Calculatingtotalweightofstoredice,ata95%confidencelevel,usingallicebasketweightsdeterminedinSR'3.6.15.2.a.SR3.6.15.3Verifyazimuthaldistributionoficeata95%confidencelevelbysubdividingweights,asdeterminedbySR3.6.15.2.a,intothefollowinggroups:f181a.Group1-bays1through8;b.Group2-bays9through16;andc.Group3-bays17through24.Theaverageiceweightofthesamplebasketsineachgroup&omradialrows1,2,4,6,8,and9shallbe>=[1400)lb.SR3.6.15.4Verify,byvisualinspection,accumulationoficeorfrostonstructuralmemberscomprisingflowchannelsthroughtheicecondenseris(=[0.38)inchthick.9months(continued)WOGSTS3.6-54Rev1,04/07/95 0

IBASES~~<i-335IceBed(IceCondenser)B3.6.15SURVEILLANCESR3.6.15.1(continued)REQUIREMENTStemperaturecondition.ThisSRmaybesatisfiedbyuseoftheIceBedTemperatureMonitoringSystem.SR3.6.15.2InsertBTheweighingprogramisdesignedtoobtainarepresentativesampleoftheicebaskets.Therepresentativesampleshallinclude6baskets&omeachofthe24icecondenserbaysandshallconsistofonebasket&omradialrows1,2,4,6,8,and9.Ifnobasket&omadesignatedrowcanbeobtainedforweighing,abasket&omthesamerowofanadjacentbayshallewDeleteTherowschosenincludetherowsnearesttheinsideandoutsidewallsoftheicecondenser(rows1and2,andSand9,respectively),wherehettransferintotheicecondenserismostlikelytoinfluencesublimation.VerifyingthetotalweightoficeensuresthatthereisadequateicetoabsorbtherequiredamountofenergytomitigatetheDBAs.[nsertConeormorebasketsIfabasketisfoundtocontain([1400]lbofesentativesampleof20additionalbasketseashallbeweihed.Theaveraggeweih'ese21baskets(thediscrepantbasketandthe20additionalbaskets)shallbe>=[1400]lbata95%confidencelevel.Weighing20additionalbarnebaymtheeventaSurveillancerevealstetontains([1400]lbensuresthatnoocalzoneexiststhatisgrosslydeficientinice,SuchazonecouldexperienceearlymeltoutduringaDBAtransient,creatingapathfor'teamtopassuhtheicebedwithouteincdened.eFrequencyosmonthswasbasedonicestoragetestsandtheallowancebuiltintotherequiredicemassoverandabovethemassassumedisafetyanalyses.inexperiencehasverifiedthat,withthemonthFrequency,theweightrequireemaintainedwithnosignificantdegradationbetweensurveillanceslDSeitDWOGB3.6-156continuedRev1,04/0//95

BASESM7/--)3$IceBedgceCondenser)B3.6.15SURVEILLANCESR3.6.15.3PSQUIREMENTS(Continued)ThisSRensuresthattheazimuthaldistributionoficeisreasonablyuniform,byverifyingthattheaverageiceweightineachofthreethaiousoficecondenserbasiswithinthelimit.TheFreuencomonthswasbasedonicestoragetestsandtheallowancebuiltintorequiredicemassoverandabovethemassassumanalyses.Operatingexperiencehasverifiedthat,withthmonthFrequency,theweightrequirementsaremaintainedwithnosignificantdegradationbetweensurveillances.f181SR3.6.15.4ThisSRensuresthatthefiowchannelsthroughtheicecondenserhavenotaccumulatedanexcessiveamountoficeor&ostblockage.Thevisualinspectionmustbemadefortwoormoreflowchannelspericecondenserbayandmustincludethefollowingspecificlocatioiisalongthefiowchannel:a.Pastthelowerinletplenumsupportstructuresandturningvanes;b.Betweenicebaskets;c.Pastlattice&ames;d.Throughtheintermediatefloorgrating;ande.'hroughthetopdeckfloorgrating.Theallowable[0.38]inchthickbuildupoffrostoriceisbasedontheanalysisofcontainmentresponsetoaDBAwithpartialblockageoftheicecondenserflowpassages.Ifaflowchannelinagivenbayisfoundtohaveanaccumulationof&ostorice>[0.38]inchthick,arepreseritativesampleof20additionalflowchannels&omthesamebaymustbevisuallyinspected.Iftheseadditionalflowchannelsareallfoundtobeacceptable,thediscrepantflowchannelmaybeconsideredsingle,unique,andacceptabledeficiency.Morethanonediscrepantflowchannelinabayisnotacceptable,however.Theserequirementsarebasedonthesensitivityofthepartialblockageanalysistoadditionalblockage.TheWOGB3.6-157continuedRev1,04/07/95

(/('3wInsertANOTE-Ifoneormorebasketsinanicecondenserbayarefoundtocontain<[1400]lbsofice,arepresentativesampleofatleast20additionalbaskets&omthesamebayshallbeweighed.Theaverageweightoficeinthebasketsweighedinthespecifiedbayshallbe>[1400]Ibsata[95]%confidencelevel.InsertBTheselectioncriteriaandmethodologyfortheweighingof144icecondenserbasketswasdocumentedintwoSERsissuedforthelicensingoftheD.C.CookNuclearFacility.ThefirstSER,issuedasSupplement5oftheoriginalD.C.CookSERonJanuary16,1976(LetterN76007),addressedtheweighingof96icebasketsanddefinedthestatisticalmethodsforanalyzingthedata.ThesecondSERwasissuedasletterN77016onFebruary16,1977andaddressedthereasonsforincreasingthesamplesizeto144icebaskets.InsertCThetotaliceweightdefinedinthisSRistheminimumrequirediceweightforthebeginningofanoperatingcycle.Asublimationallowancehasbeenprovidedtoensuresufficienticeisavailableattheendoftheoperatingcyclefortheicecondensertoperformitsintendeddesignfunction.ThisSRhasbeenmodifiedbyanotethatindicatesifoneormorebasketsarefoundtocontain<[1400]lbofice,arepresentativesampleofatleast20additionalbasketsfromthesamebayshallbeweighedandthattheaverageweightoficeinthebasketsweighedinthespecifiedbay(thediscrepantbasket(s),theremainingoriginallyselectedbaskets,andthe20additionalbaskets)shallbe2[1400]lbata[95]%confidencelevel.InsertDTheaverageweightfigureof[1400]lbsoficeperbasketcontainseitheraconservativeallowanceforicelossthroughsublimationwhichhasbeendeterminedbyplantspecificanalysisoradefined[15]%allowance.Theminimumweightfigug'eof[2,721,600]lbsoficealsocontainsanadditionalfl]%conservativeallowancetoaccountforsystematicerrorinweighinginstruments.Intheeventthatobservedsublimationratesareequaltoorlowerthandesignpredictions.afterthreeyearsofoperation,theminimumicebasketweightsmaybeadjustedd0wilwai'd.

Attachment3NKKG1432,Revision1TechnicalSpecification3.6.15RevisedPages SURVEILLANCEREUIREMENTScontinuedIceBedgceCondenser)3.6.15SURVEILLANCEFREQUENCYSR3.6.15.2NOTEIfoneormorebasketsinanicecondenserbayarefoundtocontain([1400]lbsofice,arepresentativesampleof20additionalbaskets&omthesamebayshallbeweighed.Theaverageweightoficeinthebasketsweighedinthespecifiedbayshallbe~[1400]lbsata[95]%confidencelevel.Verifytotalweightofstorediceatthebeginningofeachoperatingcycleis>=[2,721,600]lbby:[18]monthsa.Weighingarepresentativesampleof>=144icebasketsandb.Calculatingtotalweightofstoredice,ata95%confidencelevel,usingallicebasketweightsdeterminedinSR3.6.15.2.a.SR3.6.15.3Verifyazimuthaldistributionoficeata95%confidencelevelbysubdividingweights,asdeterminedbySR3.6.15.2.a,intothefollowinggroups;[18]months~~a.Group1-bays1through8;b.Group2-bays9through16;andc.Group3-bays17through24.Theaverageiceweightofthesamplebasketsineachgroup&omradialrows1,2,4,6,8,and9shallbe>=[1400]lb.WOGSTS3.6-54Rev1,04/07/95 IceBedgceCondenser)3.6.15SURVEILLANCEREUIREMENTScontinuedSURVEILLANCEFREQUENCYSR3.6.15.4Verify,byvisualinspection,accumulationoficeor&ostonstructuralmemberscomprisingQowchannelsthroughtheicecondenseris<=[0.38]inchthick.9monthsSR3.6.15.5Verifybychemicalanalysesofatleastninerepresentativesamplesofstoredice:a.Boronconcentrationis>=[1800]ppm;and18monthsb.pHis>=[9.0]and<=[9.5].SR3.6.15.6Visuallyinspect,fordetrimentalstructuralwear,cracks,corrosion,orotherdamage,twoicebasketsfromeachazimuthalgroupofbays.SeeSR3.6.15.3.I40months AES7$(F-2)~IceBed(iceCondenser)B3.6.15SURVEILLANCEREQUIREMENTSSR3.6.15.1(continued)temperaturecondition.ThisSRmaybesatisfiedbyuseoftheIceBedTemperatureMonitoringSystem.SR3.6.15.2Theweighingprogramisdesignedtoobtainarepresentativesampleoftheicebaskets.Therepresentativesampleshallinclude6baskets&omeachofthe24icecondenserbays'ndshallconsistofonebasket&omradialrows1,2,4,6,8,and9.Ifno%asket&omadesignatedrowcanbeobtainedforweighing,abasket&omthesamerowofanadjacentbayshallbeweighed.Theselectioncriteriaandmethodologyfortheweighingof144icecondenserbasketswasdocumentedintwoSERsissuedforthelicensingoftheD.C.CookNuclearFacility.ThefirstSER,issuedasSupplement5oftheoriginalD.C.CookSERonJanuary16,1976(LetterN76007),addressedtheweighingof96icebasketsanddefinedthestatisticalmethodsforanalyzingthedata.ThesecondSERwasissuedasletterN77016onFebruary16,1977andaddressedthereasonsforincreasingthesamplesizeto144icebaskets.Therowschosenincludetherowsnearesttheinsideandoutsidewallsoftheicecondenser(rows.land2,and8and9,respectively),whereheattransferintotheicecondenserismostlikelytoinfluencesublimation.VerifyingthetotalweightoficeensuresthatthereisadequateicetoabsorbtherequiredamountofenergytomitigatetheDBAs,ThetotaliceweightdefinedinthisSRistheminimumrequirediceweightforthebeginningofanoperatingcycle.Asublimationallowancehasbeenprovidedtoensuresufficienticeisavailableattheendoftheoperatingcyclefoitheicecondensertoperformitsintendeddesignfunction.ThisSRhasbeenmodifiedbyanotethatindicatesifoneormorebasketsarefoundtocontain<[1400]lbofice,arepresentativesampleof20additionalbasketsfromthesamebayshallbeweighedandthattheaverageweightoficeinthebasketsweighedinthespecifiedbay(thediscrepantbasket(s),theremainingoriginallyselectedbaskets,andthe20additionalbaskets)shallbe2[1400]lbata[95]%confidencelevel.Weighing20additionalbaskets&omthesamebayintheeventaSurveillancerevealsthatoneormorebasketscontains<[1400]lbensuresthat'nolocalzoneexiststhatisgrosslydeficientinice.SuchazonecouldexperienceearlymeltoutduringaDBAtransient,creatingapathforsteamtopassthroughtheicebedwithoutbeingcondensed.TheFrequencyof18monthswasbasedonicestoragetestsandtheallowancebuiltintotherequiredicemassoverandabovethemassassumedinthesafetyanalyses.Theaverageweightfigureof[1400]lbsoficeperbasketcontainseitheraconservativeallowanceforicelossthroughsublimationwhichhasbeendeterminedbyplantspecificanalysisoradefined[15]loallowancewhichisafactorof[15]higherthanassumedfortheicecondenserdesign.

/~r/=-32S-Theminimumweightfigureof';2,721,600]lbsoficealsocontainsanadditional[1]%conservativeallowancetoaccountforsystematicerrorinweighinginstruments.Inthe'ventthatobservedsublimationratesareequaltoorlowerthandesignpredictionsafterthreeyearsofoperation,theminimumicebasketweightsmaybeadjusteddownward.Operatingexperiencehasverifiedthat,withthe18monthFrequency,theweightrequirementsaremaintainedwithnosignificantdegradationbetweensurveillancesWOGB3.6-156continuedRev1,04/07/95.

ASES/zan'--'35IceBedgceCondenser)B3.6.15SURVEILLANCESR3.6.15.3REQUIREMENTS(Continued)ThisSRensuresthattheazimuthaldistributionoficeisreasonablyuniform,byverifyingthattheaverageiceweightineachofthreeazimuthalgroupsoficecondenserbaysiswithinthelimit.TheFrequencyof18monthswasbasedonicestoragetestsandtheallowancebuiltintotherequiredicemassoverandabovethemassassumedinthesafetyanalyses.Operatingexperiencehasverifiedthat,withthe18monthFrequency,theweightrequirementsaremaintainedwithnosignificantdegradationbetweensurveillances.SR3.6.15.4TliisSRensuresthattheflowchannelsthroughtheicecondenserhavenotaccumulatedanexcessiveamountoficeorfrostblockage.Thevisualinspectionmustbemadefortwoormoreflowchannelspericecondenserbayandmustincludethefollowingspecificlocationsalongtheflowchannel:Pastthelowerinletplenumsupportstructuresandturningvanes;b.Betweeriicebaskets;c.Pastlattice&ames;d.Throughtheintermediatefloorgrating;ande.Throughthetopdeckfloorgrating.Theallowablef0.38]inchthickbuildupoffrostoriceisbasedontheanalysisofcontainmentresponsetoaDBAwithpartialblockageoftheicecondenserflowpassages.Ifaflowchannelinagivenbayisfoundtohaveanaccumulationoffrostorice)[0.38]inchthick,arepresentativesampleof20additionalflowchannelsfromthesamebaymustbevisuallyinspected.Iftheseadditionalflowchannelsareallfoundtobeacceptable,thediscrepantflowchannelmaybeconsideredsingle,unique,andacceptabledeficiency.Morethanonediscrepantflowchannelinabayisnotacceptable,however.Theserequirementsarebasedonthesensitivityofthepartialblockageanalysistoadditionalblockage.TheWOGB3.6-157continuedRev1,04/07/95 Attachment4NUREG1432,TechnicalSpecification3.6.15InformationOnlyPages

ThisPageisForInformationOnlyandisNotPartoftheProposedTSTF3.6CONTAINMENTSYSTEMS3.6.15IceBedgceCondenser)P(rc"33mIceBedgceCondenser)B3.6.15LCO3.6.15TheicebedshallbeOPERABLE.APPLICABILITY:MODES1,2,3,and4.ACTIONSCONDITIONREQUIREDACTIONCOMPLETIONTIMEA.Icebedinoperable.B.RequiredActionand~associatedCompletionTimenotmet.A.1RestoreicebedtoOPERABLEstatus.B.1BeinMODE3.48hours6hoursB.2BeinMODE5.36hoursSURVEILLANCEREUIREMENTSSURVEILLANCESR3.6.15.1Verifymaximumicebedtemperatureis(=[27]oF.FREQUENCY12hours(continued)WOGSTS3.6-53Rev1,04/07/95 (WOG-140,Rev.0)Industry/TSTFStandardTechnicalSpecificationChangeTravelerIcebedflowchannelblockagesurveillancerequirementClassification:3)ImproveSpecificationsNUREGsAffected:t1430~14311432!14331t1434TSTF-336Description:TheproposedchangewouldrevisetheIceBedTechnicalSpecifications(TS)andassociatedTSBasesinsurveillancerequLrement(SR)3.6.15.4.Theproposedchangereplacesthecurrentvisualinspectionrequirementthatusesa0.38inchice/frostbuildupcriteria.Theproposedchangeisavisualsurveillanceprogramthatprovidesatleast95percentconfidencelevelthatflowblockagedoesnotexceedthe15percentblockageofthetotalflowareaassumedintheaccidentanalyses.Whereas,the0.38inchprogramrequiredinspectionofasfewastwofiowchannelspericecondenserbay,thenewprogramwillrequireatleast54(33percent)ofthe162flowchannelsperbaytobeinspected.TheproposedchangerevisesSR3.6.15.4&equencyinterval&om9monthsto18monthsforfiowpassageinspectionoftheicecondenser.Thesurveillanceisintendedtobeperformedfollowingoutagemaintenanceasanasleftsurveillance.Thischangealsoproposestorevisetheapplicability&om"flowchannelsthroughtheicecondenser"to"fiowchannelsthroughtheicebed".'AproposedrevisiontotheTSBasesclarifieswhichstructuresaretobinspected.Therevisionlimitsthestructurestobeinspectedtoonlyinclude"betweenicebaskets"and"pastlaniceframesandwallpanels".TheTSBasesrevisionalsoisexpandedtoexplainwhyotherstructureswithintheicecondenserarenotinspectedpertheSR.Theproposaldeletestheword"frost"&omtheSR.TheWestinghousebasesforfrostandiceasitappliestotheSRhavebeenaddedtotheTSBasestoexplainwhy&ostisnotanimpedimenttoair/steamflowthroughtheicecondenser.Justification:RecentindustryeventspromptedtheWOGIceCondenserMini-Group(ICMG)toreviewicecondensertechnicalspecificationstoidentifyenhancementsthatwouldprovidedirectcorrelationtodesignbasesaccident(DBA)analyses.DBAanalysesdemonstratethatdesignlimitsforpressurizationoflowercontainmentsubcomparunentsandthesteelcontainmentvesselwillnotbeexceededwith15percentblockageoftheicebedflowchannels.ReviewofSR3.6.15.4determinedthatthe0.38inchice/&ostbuildupcriteriadoesnotadequatelyprovideforthefullintentofthesurveillance.ThroughdiscussionswithWestinghouse,theICMGhasdeterminedthatthereisnodirectcorrelationbetweentheexistingstandardTS0.38inchcriteriaforice/frostaccumulationonflowareastructuralmembersandthepercentageofoverallfiowblockageassumedintheplantanalyses.However,theproposedchangeprovidesanacceptancecriteriaof15percentblockage,whichisdirectlyrelatedtothisfunctionalrequirement.Frost,asrecognizedbyWestinghouse,isnotanimpedimenttosteamandairflow.TheWestinghousedefinitionsfor&ostandicehavebeenaddedtotheBasesofSR3.6.15.4,andfrostspecificallyexcludedasflowchannelblockagetoprecludepotentialdeclarationsofinoperabilityduetofrostratherthanice.IceCondenseroperabilityisassuredbynumerousmeansduringoperations.Theicebedtemperatureismonitoredatleastonceeverytwelvehourstoensuretemperaturesarelessthanorequalto27F.Thisisaccomplishedinaconservativemannerbyreviewingnumerouspointsthroughouttheicecondensertoensureallpointsarelessthanorequalto27F.Inadditiontothesurveillancerequirements,therearealarmsinthecontrolroomthatwillindicatetotheoperatorifanyofthepointsbeingrecordedreach27F.Also,weeklyoperatortoursrequiretheoperatorstowalkdownthere&igerationsystemtoevaluateitsabilitytofunction.Thisincludeswalkingdownthechillers,airhandlingunits,andglycolpumpstoensurethattheyareinproperworkingorder.Thetoursalsorequiretheoperatorstoinspecttheintermediatedeckdoorstoensuretheyarenotfrozenshut.Thishelpstoensurethatnoabnormaldegradationoftheicecondenserisoccurringduetocondensationorfrozendrainlinesinlocalizedareas.IceCondenseroperabilityisdemonstratedbytheperformanceofvariousprocedures.proceduresverifytheicebedi>>nTravelerRev.2.Copyright(C)199g,ExcelServicesCorporation.UsebyExcelServicesassociates,utilityclients.andtheU.S.NuclearRegulatoryCommissionisgranted.Allotherusewithoutwrittenpermissionisprohibited.6/15/99 r~~,

~~(WOG-140,Rev.0)TSTF-336goodphysicalcondition.Proceduresalsovalidateassumptionsusedintheaccidentanalysis.TheflowpassageinspectionisperformedtoensuretheabsenceofabnormalicebeddegradationaswouldbeindicatedifaccumulationsexceedtheSRacceptancecriteriaTherequesttoincreasethesurveillanceinterval&omninemonthstoeighteenmonthswouldrequiretheperformanceofsuchicebedmonitoringduringrefuelingoutages.ICMGmembersbelievethatindustryimprovementsinicebedinspectionresults,duetomodifiedmaintenancetechniquesthathavebeenimplemented,provideadequateassurancethattheicecondensercanmeetandevenexceeditsdesignfunctionwithoutperformingthesurveillanceonaninemonth&equency.ExamplesofOperatingExperienceandIndustryconcertedimprovements:>Improvedcontrolofdoorsduringmaintenanceincludingappropriatepenetiationsforhosestominimizeicecondenserheatandhumiditygains.>Improvedmanagementofwallandfioorde&ostcycles(ifused,occursonlyduringoutages).>ImprovedpreventativemaintenanceprogramsonIceCondensercoolingsystems.>IncreasedpriorityonrepairofIceCondensercoolingsystems.>Improvedtrainingandproceduresforemptyingandrefillingofbaskets,andsubsequentcleanup.>Improvedtrainingandproceduresforflowpassagesurveillances.>Proposedincreaseinminimumsamplesizerequirementforflowpassagesurveillance.>ProposedsurveillanceacceptancecriterionthateffectivelyalignswithDBAanalysisforoperabilitydetermination.Improvedcontrolofmaintenancehaslimitedthoseactivitieswiththepotentialforsignificantfiowchannelblockagetoduringrefuelingoutages.Verifyinganicebedisleftwithlessthanorequalto15%flowchannelblockageattheconclusionofarefuelingoutageassurestheicebedwillremaininanacceptableconditionforthedurationoftheoperatingcycle.Duringtheoperatingcycle,anexpectedamountoficesublimatesandreformsas&ostonthecoldersurfacesintheIceCondenser.However,frostdoesnotdegradeflowchannelflowarea.Therefore,flowchannelblockagesurveillanceshouldonlyberequiredattheconclusionofscheduledrefuelingoutages.Thesurveillancewill'ffectivelydemonstrateoperabilityforanallowed18monthsurveillanceperiod.IndustryContact:Buschbaum,DennyNRCContact:Giardina,Bob(254)897-5851301-314-3152dbuschb1tuelectric.cornlbb1nrc.govRevisionHistoryOGRevision0RevisionStatus:ActiveNextAction:NRCRevisionProposedby:McGuireRevisionDescription:OriginalIssueOwnersGroupReviewInformationDateOriginatedbyOG:1!-Jun-99OwnersGroupComments(NoComments)OwnersGroupResolution:ApprovedDate:11-Jun-99TSTFReviewInformationTSTFr'eceivedDate:11-Jun-99DateDistributedforReview11-Jun-99OGReviewCompleted:~BWOGPWOGPCEOGstrBWROGTravelerRev.2.Copyright(C)l99g,ExcelServicesCorporation.UsebyExcelServicesassociates,utilityclients,andtheU.S.NuclearRegulatoryCommissionisgranted.Allotherusewithoutwrittenpcnnissionisprohibited.6/I5/99

~~

~~(WOG-140,Rev.0)TSTF-336OGRevision0RevisionStatus:ActiveNextAction:NRCTSTFComments:(NoComments)TSTFResolution:ApprovedDate:15-Jun-99NRCReviewInformationNRCReceivedDate:16-Jun-99NRCComments:(NoComments)FinalResolution:NRCActionPendingFinalResolutionDate:IncorporationIntotheNUREGsFiletoBBS/LANDate:TSTFInformedDate:NUREGRevIncorporated:AffectedTechnicalSpecificationsTSTFApprovedDate:SR3.6.15.4IceBed(IceCondenser)SR3.6.15.4BasesIceBed(IceCondenser)Bkgnd3.6.15BaseslceBed(iceCondenser)6/l5/99TravelerRev.2.Copyright(C)l998.ExcelServicesCorporation.UsebyExcelServicesassociates,utilityclients,andtheU.S.NuclearRegulatoryCommissionisgranted.Allotherusewithoutwrinenpermissionisprohibited.

~~

(5pF-334Attachment1TechnicalSpecification3.6.15NoSignificantHazardsConsideration NOSIGNIFICANTHAZARDSCONSIDERATIONDETERMINATION[UtilityName]hasconcludedthatoperationof[PlantName]Unit[X],inaccordancewiththeproposedchangetothetechnicalspecifications[oroperatinglicense(s)],doesnotinvolveasignificanthazardsconsideration.[UtilityName]'sconclusionisbasedonitsevaluation,inaccordancewith10CFR50.91(a)(1),ofthethreestandardssetforthin10CFR50.92(c).A.Theroosedamendmentdoesnotinvolvea'siificantincreaseintherobabil'itorconseencesofanaccidentreviouslevaluated.NeithertheTSamendmentnortheTSBaseschangecanincreasetheprobabilityofoccurrenceofanyanalyzedaccidentbecausetheyarenottheresultorcauseofanyphysicalmodificationtoicecondenserstructures.Forthecurrentdesignoftheicecondenser,thereisnocorrelationbetweenanycrediblefailureofitandtheinitiationofanypreviouslyanalyzedevent.Regardingtheconsequencesofanalyzedaccidents,theicecondenserisanengineeredsafetyfeaturedesigned,inpart,tolimitthecontainmentsub-compartmentandsteelcontainmentvesselpressuresimmediatelyfollowingtheinitiationofaLOCAorHELB.Conservativesub-compartmentpressureanalysisshowsthiscriteriawillbemetifthereductionintheflowareaperbayprovidedforicecondenserair/steamflowchannelsislessthanorequalto15percent,orifthetotalflowareablockedwithineachlumpedanalysissectionislessthanorequaltothe15percentassumedinthesafetyanalysis.Thepresent0.38inchfrost/icebuildupsurveillancecriteria.onlyaddressestheacceptabilityofanygivenflow.channel,andhasnodirectcorrelationbetweenflowchannelsexceedingthiscriteriaandpercentoftotalflowchannelblockage.Infact,itwasnevertheintentofthecurrentSRtomakesuchacorrelation.Ifproblemswereencounteredinmeetingthe0.38inchcriteria,itwasexpectedthatadditionalinspectionand-analysis,suchasprovidedintheproposedamendment,wouldbeperformedtomakesuchadetermination.Thus,theproposedamendmentforflowblockagedeterminationprovidesthenecessaryassurancethatflowchannelrequirementsaremetwithoutadditionalevaluations,andthuswillnotincreasetheconsequencesofaLOCAorHELB.Theproposedamendmentalsorevisesthesurveillancefrequencyfromevery9monthstoevery18monthssuchthatitwillcoincidewithrefuelingoutages.Theelimination ofthemid-cyclesurveillancedoesnotsignificantlyincreasethecons'equenceofanaccidentpreviouslyevaluated.Improv'edcontrolofmaintenancehaslimitedthoseactivitieswiththepotentialforsignificantflowchannelblockagetoduringrefuelingoutages.Verifyinganicebedisleftwithlessthanorequalto15%flowchannelblockageattheconclusionofarefuelingoutageassurestheicebedwillremaininanacceptableconditionforthedurationoftheoperatingcycle.Duringtheoperatingcycle,acertainamountoficesublimatesandreformsasfrostonthecoldersurfacesintheIceCondenser.However,frostdoesnotdegradeflowchannelflowarea.Thesurveillancewilleffectivelydemonstrateoperabilityforanallowed18monthsurveillanceperiod.Therefore,increasingthesurveillancefrequencydoesnotaffecttheIceCondenseroperationoraccidentresponse.Limitingicebedflowchannelblockagetolessthanorequalto150ensuresoperationisconsistentwiththeassumptionsofthedesignbasisaccident(DBA)analyses.Therefore,theproposedamendmentwillnotincreasetheconsequencesofanyaccidentpreviouslyevaluated.Theroosedamendmentdoesnotcreatetheossibilitofanewordifferent'kindofaccidentfromanaccidentreviouslevaluated.Forsuchapossibilitytoexist,therewouldhavetobeeitheraphysicalchangetotheicecondenser,orsomechangeinhowitisoperatedorphysicallymaintained.NoneoftheaboveistruefortheproposedTSamendmentandTSBaseschange.Thereisnochangetotheexistingdesignrequirementsorinputs/resultsofanyaccidentanalysiscalculations.TheroosedamendmentdoesnotinvolveasiificantreductioninamarinofsafetDesignBasisAccidentanalyseshaveshownthatwith85percentofthetotalflowareaavailable(uniformlydistributed),theicecondenserwillperformitsintendedfunction.Thus,thesafetylimitforicecondenseroperabilityisamaximum15percentblockageofflowchannels.SR3.6.15.4currentlyusesaspecificvalueof0.38inchbuilduptodetermineifunacceptablefrost/iceblockageexistsintheicecondenser.However,thisspecificvaluedoesnothaveadirectcorrelationtothesafetylimitforblockageoficecondenserflowarea.TheproposedTSamendmentrequiresmoreextensivevisualinspection(33percentoftheflowarea/bay)thaniscurrentlydescribed(2flowchannels/bay)intheTSBasesforSR3.6.15.4,thusprovidinggreaterreliabilityanda s~

MISC-g)<directrelationshiptotheanalyticalsafetylimits.ChangingtheTStoimplementasurveillanceprogramthatismorereli'ableandusesacceptancecriteriaoflessthanorequalto15percentflowblockage,asallowedbytheTMDanalysis,willnotreducethemarginofsafetyofanyTS.Theproposedamendmentalsorevisesthesurveillancefrequencyfromevery9monthstoevery18monthssuchthatitwillcoincidewithrefuelingoutages.Verifyinganicebedisleftwithlessthanorequalto15%flowchannelblockageattheconclusionofarefuelingoutageassurestheicebedwillremaininanacceptableconditionforthedurationoftheoperatingcycle.Duringtheoperatingcycle,acertainamountoficesublimatesandreformsasfrostonthecoldersurfacesintheIceCondenser.However,frosthasbeendeterminedtonotdegradeflowchannelflowarea.Thus,designlimitsforthecontinuedsafefunctionofcontainmentsub-compartmentwallsandthesteelcontainmentvesselarenotexceededduetothischange.ENVZRONMENTALZMPACTCONSZDERATZONTheproposedchangedoesnotinvolveasignificanthazardsconsideration,asignificantchangeinthetypesoforsignificantincreaseintheamountsofanyeffluentsthatmaybereleasedoffsite,orasignificantincreaseinindividualorcumulativeoccupationalradiationexposure.Therefore,theproposedchangemeetstheeligibilitycriteriaforcategoricalexclusionsetforthin10CFR51.22(c)(9).Therefore,pursuantto10CFR51.22(b),anenvironmentalassessmentoftheproposedchangeisnotrequired.

Attachment2NIUI&G1431,Revision1TechnicalSpecification3.6.15MarkedUpPages S

ig7F-336IceBedgceCondenser)3.6.15SURVEILLANCEREUIREMENTScontinuedSURVEILLANCE'FREQUENCYSR3.6.15.2Verifytotalweightofstorediceis~[2,721,600]lbby:9monthsWeighingarepresentativesampleof~144icebasketsandverifyingeachbasketcontains~[1400)Ibofice;andb.Calculatingtotalweightofstoredice,ata95%confidencelevel,usingallicebasketweightsdeterminedinSR3.6.15.2.a.R3.6.15.3Verifyazimuthaldistributionoficeata95%confidencelevelbysubdividingweights,asdeterminedbySR3.6.15.2.a,intothefollowinggroups:9monthsLGroup1-bays1through8;b.Group2-bays9through16;andc.Group3-bays17through24.Theaverageiceweightot'nesamplebasketsineachgroupfromradialrows1,2,4,6,8,and9shallbe~[1400]lb.SR3.6.15.4Verisualinspection,accumulationoficonstructuralmemberscornrisinannsti:ruhtheiceXones18edis(15percentblockageofhetotalfloware~,WOGSTS3.6-54 InsertATheicebasketscontaintheicewithintheicecondenser.Theicebedisconsideredtoconsistofthetotalvolumefromthebottomelevationoftheicebasketstothetopelevationoftheicebaskets.Theicebasketspositiontheicewithintheicebedinanarrangementtopromoteheattransferfromsteamtoice.InsertBThisSRensuresthattheflowchannelsthroughtheicebedhavenotaccumulatediceblockagethatexceeds15percentofthetotalflowareathroughtheicebedregion.Theallowable15percentbuildupoficeisbasedontheanalysisofthesu~mpartmentresponsetoadesignbasisLOCAwithpartialblockageoftheicecondenserflowchannels,Theanalysisdidnotperformdetailedflowareamodeling,butlumpedtheicecondenserbaysintosixsectionsrangingfrom2.75baysto6.5bays.Individualbaysareacceptablewithgreaterthan15percentblockage,aslongas15percentblockageisnotexceededforanyanalysissection.Toprovidea95percentconfidencethatflowblockagedoesnotexceedtheallowed15percent,thevisualinspectionmustbemadeforatfeast54(33percent)ofthe162flowchannelspericecondenserbay.Thevisualinspectionoftheicebedflowchannelsistoinspecttheflowarea,bylookingdownfromthetopoftheicebed,andwhereviewisachievableupfromthebottomoftheicebed.Flowchannelstobeinspectedaredeterminedbyrandomsample.Asthemostrestrictiveicebedfiowpassageisfoundatalatticeframeelevation,the15percentblockagecriteriaonlyappliesto"fiowchannels"thatcomprisethearea:a.betweenicebaskets,andb.pastlatticeframesandwallpanels.Duetoasignificantlylargerflowareaintheregionsoftheupperdeckgratingandthelowerinletplenumsupportstructuresandturningvanes,agrossbuildupoficeonthesestructureswouldberequiredtodegradeairandsteamflow.Therefore,thesestructuresareexcludedaspartofaflowchannelforapplicationofthe15percentblockagecriteria.Industryexperiencehasshownthatremovaloficefromtheexcludedstructuresduringtherefuelingoutageissufficienttoensuretheyremainoperablethroughouttheoperatingcycle.Removalofanygross'icebuildupontheexcludedstructuresisperformedfollowingoutagemaintenanceactivities.Operatingexperiencehasdemonstratedthattheicebedistheregionthatisthemostflowrestrictive,duetothenormalpresenceoficeaccumulationonlatticeframesandwallpanels.Theflowareathroughtheicebasketsupportplatformisnotamorerestrictiveflowareabecauseitiseasilyaccessiblefromthelowerplenumandismaintainedclearoficeaccumulation.Thereisnomechanisticallycrediblemethodforicetoaccumulateontheicebasketsupportplatformduringplantoperation.Plantandindustryexperiencehasshownthattheverticalflowareathroughtheicebasketsupportplatformremainsclearoficeaccumulationthatcouldproduceblockage.Normallyonlyaglazemaydeveloporexistontheicebasketsupportplatformwhichisnotsignificanttoblockageofflowarea.Additionally,outagemaintenancepracticesprovidemeasurestocleartheicebasketsupportplatformfollowingmaintenanceactivitiesofanyaccumulationoficethatcouldblockflowareas.Frostbuilduporlooseiceisnottobeconsideredasflowchannelblockage,whereasattachediceisconsideredblockageofaflowchannel.Frostisthesolidformofwaterthatislooselyadherent,andcanbebrushedoffwiththeopenhand.

IceBed(IceCondenser)B3.6.15B3.6CONTAINMENTSYSTEMSB3.6.15IceBed(lceCondenser)ADD1944BASESBACKGROUNDTheicebedconsistsofove,721,60Iboficestoredinbasketswithintheicecondenser.Itsprimarypurposeistoprovidealargeheatsinkintheevent-ofareleaseofenergyfromaDesignBasisAccident(DBA)incontainment.Theicewouldabsorbenergyandlimitcontainmentpeakpressureandtemperatureduringtheaccidenttransient.LimitingthepressureandtemperaturereducesthereleaseoffissionproductradioactivityfromcontainmenttotheenvironmentintheeventofaDBA.Theicecondenserisanannularcompartmentencfosingapproximately300ooftheperimeteroftheuppercontainmentcompartment,butpenetratingtheoperatingdecksothataportionextendsintothelowercontainmentcompartment.Thelowerportionhasaseriesofhingeddoorsexposedtotheatmosphereofthelowercontainmentcompartment,which,fornormalunitoperation,aredesignedtoremainclosed.Atthetopoftheicecondenserisanothersetofdoorsexposedtotheatmosphereoftheuppercompartment,whichalsoremainclosedduringnormalunitoperation.Intermediatedeckdoors,locatedbelowthetopdeckdoors,formthefloorofaplenumattheupperpartoftheicecondenser.Thesedoorsalsoremainclosedduringnormalunitoperation.Theupperplenumareaisusedtofacilitatesurveillanceandmaintenanceoftheicebed.nsertAThisarrangementenancestheicecondenser'sprimaryfunctionofcondensingsteamandabsorbingheatenergyreleasedtothecontainmentduringaDBA.IntheeventofaDBA,theicecondenserinletdoors(locatedbelowtheoperatingdeck)openduetothepressureriseinthelowercompartment.Thisallowsairandsteamtofiowfromthelowercompartmentintotheicecondenser.Theresultingpressureincreasewithintheicecondensercausestheintermediatedeckdoorsandthetopdeckdoorstoopen,whichallowstheairtoflowoutoftheicecondenserintotheuppercompartment.Steamcondensationwithintheicecondenserlimitsthepressureandtemperaturebuildupin(continued)WOGSTSB3.6-151 S0 IceBed(IceCondenser)B3.6.15BASESSURVEILLANCESR3.6.15.3REQUIREMENTS(continued)ThisSRensuresthattheazimuthaldistributionoficeisreasonablyuniform,byverifyingthattheaverageiceweightineachofthreeazimuthalgroupsoficecondenserbaysiswithinthelimit.TheFrequencyof9monthswasbasedonicestoragetestsandtheallowancebuiltintotherequiredicemassoverandabovethemassassumedinthesafetyanalyses.OperatingexperiencehasverNedthat,withthe9monthFrequency,theweightrequirementsaremaintainedwithnosignificantdegradationbetweensurveillances.SR3.6.15.4nsertBcontinued)OGSTSB3.6-157 I

IceBed(IceCondenser)B3.6.15BASESSURVEILLANCEREQUIREMENTSSR3.6.15.4(continued)SR3.6.15.5Verifyingthechemicalcompositionofthestorediceensuresthatthestoredicehasaboronconcentrationofatleast[1800]ppmassodiumtetraborateandahighpH,p[9.0]andg[9.5],inordertomeettherequirementforboratedwaterwhenthemeltediceisusedintheECCSrecirculationmodeofoperation.Sodiumtetraboratehasbeenproveneffectiveinmaintainingtheboroncontentforlongstorageperiods,anditalsoenhancestheabilityofthesolutiontoremoveandretainfissionproductiodine.ThehighpHisrequiredtoenhancetheeffectivenessoftheiceandthemeltediceinremovingiodinefromthecontainmentatmosphere.ThispHrangealsominimizestheoccurrenceofchlorideandcausticstresscorrosiononmechanicalsystemsandcomponentsexposedtoECCSandContainmentSpraySystemfluidsintherecirculationmodeofoperation.TheFrequencyof[18]monthswasdevelopedconsideringthesefactsa.Longicestoragetestshavedeterminedthatthechemicalcompositionofthestorediceisextremelystable.b.OperatingexperiencehasdemonstratedthatmeetingtheboronconcentrationandpHrequirementshasneverbeenaproblem;andc.Someonewouldhavetoenterthecontainmenttotakethesample,and,iftheunitisatpower,thatpersonwouldreceivearadiationdose.SR3.6.15.6ThisSRensuresthatarepresentativesamplingoficebaskets,whicharerelativelythinwalled,perforatedcylinders,havenotbeendegradedbywear,cracks,corrosion,orotherdamage.Eachicebasketmustberaisedatleast12feetforthisinspection.TheFrequencyof(continued)WOGSTSB3.6-158

~ViAttachment3NIUI&G1431,Revision1TechnicalSpecification3.6.15RevisedPages

IceBedgceCondenser)3.6.15SURVEILLANCEREUIRElvKNTScontinuedSURVEILLANCEFREQUENCY'R3.6.15.2Verifytotalweightofstorediceis~[2,721,600]Ibby:9monthsaoWeighingarepresentativesampleof~144icebasketsandverifyingeachbasketcontains>[1400]lbofice;aildb.Calculatingtotalweightofstoredice,ata95%confidencelevel,usingallicebasketweightsdeterminedinSR3.6.15.2.a.R3.6.15.3Verifyazimuthaldistributionoficeata95%confidencelevelbysubdividingweights,asdeterminedbySR3.6.15.2.a,intothefollowinggroups:'monthsa.Group1-bays1through8;b.Group2-bays9through16;andc.Group3-bays17through24.Theaverageiceweightofthesamplebasketsineachgroupfromradialrows1,2,4,6,8,and9shallbep[1400]lb.SR3.6.15.4Verify,byvisualinspection,accumulationoficeonstructuralmemberscomprisingflowchannelsthroughtheicebedisz15percentblockageofthetotalflowarea.18monthsWOGSTS3.6-54(continued)

C'I CPcs-)34IceBed(iceCondenser)B3.6.15'3.6CONTAINMENTSYSTEMSB3.6.15lceBed(IceCondenser)BASESBACKGROUNDUTheicebedconsistsofover[2,721,600]Iboficestoredin1944basketswithintheicecondenser.ItsprimarypurposeistoprovidealargeheatsinkintheeventofareleaseofenergyfromaDesignBasisAccident(DBA)incontainment.Theicewouldabsorbenergyandlimitcontainmentpeakpressureandtemperatureduringtheaccidenttransient.LimitingthepressureandtemperaturereducesthereleaseoffissionproductradioactivityfromcontainmenttotheenvironmentintheeventofaDBA.Theicecondenserisanannularcompartmentenclosingapproximately300ooftheperimeteroftheuppercontainmentcompartment,butpenetratingtheoperatingdecksothataportionextendsintothelowercontainmentcompartment.Thelowerportionhasaseriesofhingeddoorsexposedtotheatmosphereofthelowercontainmentcompartment,which,fornormalunitoperation,aredesignedtoremainclosed.Atthetopoftheicecondenserisanothersetofdoorsexposedtotheatmosphereoftheuppercompartment,whichalsoremainclosedduringnormalunitoperation..Intermediatedeckdoors,locatedbelow.thetopdeckdoors,formthefioorofaplenumattheupperpartoftheicecondenser.Thesedoorsalsoremainclosedduringnormalunitoperation.Theupperplenumareaisusedtofacilitatesurveillanceandmaintenanceoftheicebed.lTheicebasketscontaintheicewithintheicecondenser.Theicebedisconsideredtoconsistofthetotalvolumefromthebottomelevationeftheicebasketstothetopelevationoftheicebaskets.Theicebasketspositiontheicewithintheicebedinanarrangementtopromoteheattrains'.rfromsteamtoice.Thisarrangementenhancestheicecondenser'sprimaryfunctionofcondensingsteamandabsorbingheatenergyreleasedtothecontainmentduringaDBA.IntheeventofaDBA,theicecondenserinletdoors(locatedbelowtheoperatingdeck)openduetothepressureriseinthelowercompartment.Thisallowsairandsteamtoflowfromthelowercompartmentintotheicecondenser.Theresultingpressureincreasewithintheicecondensercausestheintermediatedeckdoorsandthetopdeckdoorstoopen,whichallowstheairtoflowoutoftheicecondenserintotheuppercompartment.Steamcondensationwithintheicecondenserlimitsthepressureandtemperaturebuildupin(continued)WOGSTSB3.6-151 CA7 IceBed(IceCondenser)B3.6.15BASESSURVEILLANCEREQUIREMENTSSR3.6.15.4(continued)throughouttheoperatingcycle.Removalofanygrossicebuildupontheexcludedstructuresisperformedfollowingoutagemaintenanceactivities.Operatingexperiencehasdemonstratedthattheicebedistheregionthatisthemostflowrestrictive,duetothenormalpresenceoficeaccumulationonlatticeframesandwallpanels.Theflowareathroughtheicebasketsupportplatformisnotamorerestrictiveflowareabecauseitiseasilyaccessiblefromthelowerplenumandismaintainedclearoficeaccumulation.Thereisnomechanisticallycrediblemethodforicetoaccumulateontheicebasketsupportplatformduringplantoperation.Plantandindustryexperiencehasshownthattheverticalflowareathroughtheicebasketsupportplatformremainsclearoficeaccumulationthatcouldproduceblockage.Normallyonlyaglazemaydeveloporexistontheicebasketsupportplatformwhichisnotsignificanttoblockageofflowarea.Additionally,outagemaintenancepracticesprovidemeasurestocleartheicebasketsupportplatformfollowingmaintenanceactivitiesofanyaccumulationoficethatcouldblockflowareas.Frostbuilduporlooseiceisnottobeconsideredasflowchannelblockage,whereasattachediceisconsideredblockageofaflowchannel.Frostisthesolidformofwaterthatislooselyadherent,andcanbebrushedoffwiththeopenhand.SR3.6.15.5Verifyingthechemicalcompositionofthestorediceensuresthatthestoredicehasaboronconcentrationofatleast[1800]ppmassodiumtetraborateandahighpH,p[9.0]andg[9.5],inordertomeettherequirementforboratedwaterwhenthemeltediceisusedintheECCSrecirculationmodeofoperation.Sodiumtetraboratehasbeenproveneffectiveinmaintainingtheboroncontentforlongstorageperiods,anditalsoenhancestheabilityofthesolutiontoremoveandretainfissionproductiodine.ThehighpHisrequiredtoenhancetheeffectivenessoftheiceandthemeltediceinremovingiodinefromthecontainmentatmosphere.ThispHrangealsominimizestheoccurrenceofchlorideandcausticstresscorrosiononmechanicalsystemsandcomponentsexposedtoECCSandContainment(continued)WOGSTSB3.6-158 Page1of2TennesseeValleyAuthoritySEQUOYAHNUCLEARPLANTWATTSBARNUCLEARPLANTCC:Mr.J.A.ScaliceChiefNuclearOfficerandExecutiveVicePresidentTennesseeValleyAuthority6ALookoutPlace1101MarketStreetChattanooga,Tennessee37402-2801Mr.KarlW.Singer,SeniorVicePresidentNuclearOperationsTennesseeValleyAuthority6ALookoutPlace1101MarketStreetChattanooga,TN37402-2801Mr.JackA.Bailey,VicePresidentEngineering&TechnicalServicesTennesseeValleyAuthority6ALookoutPlace1101MarketStreetChattanooga,TN37402-2801Mr.RichardT.Purcell,SiteVicePresidentWattsBarNuclearPlantTennesseeValleyAuthorityP.O.Box2000SpringCity,TN37381Mr.MasoudBajestaniSiteVicePresidentSequoyahNuclearPlantTennesseeValleyAuthorityP.O.Box2000SoddyDaisy,TN37379GeneralCounselTennesseeValleyAuthorityET10H400WestSummitHillDriveKnoxville,TN37902Mr.N.C.Kazanas,GeneralManagerNuclearAssuranceTennesseeValleyAuthority5MLookoutPlace1101MarketStreetChattanooga,TN37402-2801Mr.MarkJ.Burzynski,ManagerNuclearLicensingTennesseeValleyAuthority4XBlueRidge1101MarketStreetChattanooga,TN37402-2801Mr.PedroSalas,ManagerLicensingandIndustryAffairsSequoyahNuclearPlantTennesseeValleyAuthorityP.O.Box2000SoddyDaisy,TN37379Mr.D.L.Koehl,PlantManagerSequoyahNuclearPlantTennesseeValleyAuthorityP.O.Box2000SoddyDaisy,TN37379SeniorResidentInspectorSequoyahNuclearPlantU.S.NuclearRegulatoryCommission2600IgouFerryRoadSoddyDaisy,TN37379CountyExecutiveHamiltonCountyCourthouseChattanooga,TN37402-2801Mr.PaulL.Pace,ManagerLicensingandIndustryAffairsWattsBarNuclearPlantTennesseeValleyAuthorityP.O.Box2000SpringCity,TN37381Mr.WilliamR.Lagergren,PlantManagerWattsBarNuclearPlantTennesseeValleyAuthorityP.O.Box2000SpringCity,TN37381

~~Page2of2LTennesseeValleyAuthority.~SEQUOYAHNUCLEARPLANTWATTSBARNUCLEARPLANTcc:SeniorResidentInspectorWattsBarNuclearPlantU.S.NuclearRegulatoryCommission1260NuclearPlantRoadSpringCity,TN37381CountyExecutiveRheaCountyCourthouseDayton,TN37321CountyExecutiveMeigsCountyCourthouseDecatur,TN37322Mr.MichaelH.Mobley,DirectorTNDept.ofEnvironment&ConservationDivisionofRadiologicalHealth3rdFloor,LandCAnnex401ChurchStreetNashville,TN37243-1532 McGuireNuclearStationCC:Ms.LisaF.VaughnLegalDepartment(PBO5E)DukeEnergyCorporation422SouthChurchStreetCharlotte,NorthCarolina28201-1006CountyManagerofMecktenburgCounty720EastFourthStreetCharlotte,NorthCarolina28202MichaelT.CashRegulatoryComplianceManagerDukeEnergyCorporationMcGuireNuclearSite12700HagersFerryRoadHuntersville,NorthCarolina28078J.MichaelMcGarry,III,EsquireWinstonandStrawn1400LStreet,NW.Washington,DC20005SeniorResidentInspectorc/oU.S.NuclearRegulatoryCommission12700HagersFerryRoadHuntersville,NorthCarolina28078Dr.JohnM.BarryMecklenbergCountyDepartmentofEnvironmentalProtection700N.TryonStreetCharlotte,NorthCarolina28202Mr.StevenP.ShaverSeniorSalesEngineerWestinghouseElectricCompany5929CarnegieBlvd.Suite500Charlotte,NorthCarolina28209Ms.KarenE.LongAssistantAttorneyGeneralNorthCarolinaDepartmentofJusticeP.O.Box629Raleigh,NorthCarolina27602L.A.KellerManager-NuclearRegulatoryLicensingDukeEnergyCorporation526SouthChurchStreetCharlotte,NorthCarolina28201-1006ElaineWathen,LeadREPPlannerDivisionofEmergencyManagement116WestJonesStreetRaleigh,NorthCarolina27603-1335Mr.RichardM.Fry,DirectorDivisionofRadiationProtectionNorthCarolinaDepartmentofEnvironment,HealthandNaturalResources3825BarrettDriveRaleigh,NorthCarolina27609-7721Mr.T.RichardPuryearOwnersGroup(NCEMC)DukeEnergyCorporation4800ConcordRoadYork',SouthCarolina29745Mr.H.B.BarronVicePresident,McGuireSiteDukeEnergyCorporation12700HagersFerryRoadHuntersville,NC28078-8985 IC CatawbaNuclearStationCC:Mr.GaryGilbertRegulatoryComplianceManagerDukeEnergyCorporation4800ConcordRoadYork,SouthCarolina29745Ms.LisaF.VaughnLegalDepartment(PB05E)DukeEnergyCorporation422SouthChurchStreetCharlotte,NorthCarolina28201-1006AnneCottington,EsquireWinstonandStrawn1400LStreet,NWWashington,DC20005NorthCarolinaMunicipalPowerAgencyNumber11427MeadowwoodBoulevardP.O.Box29513Raleigh,NorthCarolina27626CountyManagerofYorkCountyYorkCountyCourthouseYork,SouthCarolina29745PiedmontMunicipalPowerAgency121VillageDriveGreer,SouthCarolina29651Ms.KarenE.LongAssistantAttorneyGeneralNorthCarolinaDepartmentofJusticeP.O.Box629Raleigh,NorthCarolina27602ElaineWathen,LeadREPPlannerDivisionofEmergencyManagement116WestJonesStreetRaleigh,NorthCarolina27603-1335NorthCarolinaElectricMembershi'pCorporationP.O.Box27306Raleigh,NorthCarolina27611SeniorResidentInspectorU.S.NuclearRegulatoryCommission4830ConcordRoadYork,SouthCarolina29745VirgilR.Autry,DirectorDivisionofRadioactiveWasteManagementBureauofLandandWasteManagementDepartmentofHealthandEnvironmentalControl2600BullStreetColumbia,SouthCarolina29201-1708L.A.KellerManager-NuclearRegulatoryLicensingDukeEnergyCorporation526SouthChurchStreetCharlotte,NorthCarolina28201-1006SaludaRiverElectricP.O.Box929Laurens,SouthCarolina29360Mr.StevenP.ShaverSeniorSalesEngineerWestinghouseElectricCompany5929CarnegieBlvd.Suite500Charlotte,NorthCarolina28209Mr.G.R.PetersonSiteVicePresidentCatawbaNuclearStationDukeEnergy~',orooration4800ConcordRoadYork,SouthCarolina29745-9635 4h' CatawbaNuclearStationCC:Mr.T.RichardPuryearOwnersGroup(NCEMC)DukeEnergyCorporation4800ConcordRoadYork,SouthCarolina29745RichardM.Fry,DirectorDivisionofRadiationProtectionNorthCarolinaDepartmentofEnvironment,Health,andNaturalResources3825BarrettDriveRaleigh,NorthCarolina27609-7721 CC:RegionalAdministrator,RegionIIIU.S.NuclearRegulatoryCommission801WarrenvilleRoadLisle,IL60532-4351AttorneyGeneralDepartmentofAttorneyGeneral525WestOttawaStreetLansing,Ml48913TownshipSupervisorLakeTownshipHallP.O.Box818Bridgman,Ml49106U.S.NuclearRegulatoryCommissionResidentInspector'sOffice7700RedArrowHighwayStevensville,Ml49127JeremyJ.Euto,EsquireIndianaMichiganPowerCompanyNuclearGenerationGroup500CircleDriveBuchanan,Ml49107Mayor,CityofBridgmanP.O.Box366Bridgman,MI49106SpecialAssistanttotheGovernorRoom1-StateCapitoiLansing,Ml48909DonaldC.CookNuclearPlantUnits1and2DrinkingWaterandRadiologicalProtectionDivisionMichiganDepartmentofEnvironmentalQuality3423N.MartinLutherKingJrBlvdP.O.Box30630CPHMailroomLansing,Ml48909-8130GordonArentDirector,RegulatoryAffairsIndianaMichiganPowerCompanyNuclearGenerationGroup500CircleDriveBuchanan,Ml49107DavidA.LochbaumUnionofConcernedScientists1616PStreetNW,Suite310Washington,DC20036-1495A.ChristopherBakken,SiteVicePresidentIndianaMichiganPowerCompanyNuclearGenerationGroupOneCookPlaceBridgman,Ml49106MichaelW.RencheckVicePresident,NuclearEngineeringIndianaMichiganPowerCompanyNuclearGenerationGroup500CircleDriveBuchanan,Ml49107Mr.RobertP.Powers,VicePresidentIndianaMichiganPowerCompanyNuclearGenerationGroup500CircleDriveBuchanan,MI49107

'-0'\0