ML17331B196

Control Rod Misalignment Analysis.

ML17331B196
Person / Time
Site:	Cook
Issue date:	09/30/1993
From:	AMERICAN ELECTRIC POWER SERVICE CORP.
To:
Shared Package
ML17331B194	List: ML17331B193 ML17331B195 ML17331B196
References
NUDOCS 9401270040
Download: ML17331B196 (168)

Text

9ATTACHMENT4TOAEP'NRC'1182CONTROLRODMISALIGNMENTANALYSIS9401270040940117'PDR,ADGCK05000315'.,'DR

DONALDCeCOOKNUCLEARPLANTCONTROLRODMISALIGNMENTANALYSISSEPTEMBER1993AMERICANELECTRICPOWERSERVICECORPORATIONCOLUMBUS,OHIO TABLEOFCONTENTSIntroductionandDefinitionofTerms........................11.1Introduction1.2DefinitionofTerms2.ARPITechnicalSecification................................32.1ProblemDescription2.2ProblemSolution333~RodMisalinmentConcerns..................................53.1ReactivityControl3.2ControlRodMisoperation3.3RodE)ection3.4PowerOperationwithMisalignedRod55784~PowerDistributionAnalses.................................94.1AnalysisMethods4.2MisalignmentCalculations4.3LoadFollowTransients4.4Unit1Applicability101114155.TechnicalSecificationChanesandImlementation.........165.1TechnicalSpecificationChanges5.2TechnicalSpecificationImplementation16186.~Summa'...................................................2078.References.................................................65 INTRODUCTIONANDDEFINITIONOFTERMS1.1Introductionl'heDonaldC.CookNuclearPlantconstructedandoperatedbytheAmericanElectricPowerCompanyislocatedalongtheeasternshoreofLakeMichiganinBridgman,BerrienCounty,4Michigan.Thereactorisaclosed<<cyclegpressurized,lightwatermoderatedandcooledsystem,andusesslightlyen-richeduraniumoxidefuel.TheUnit1reactorisdesignedtoproduce3250MW~~andUnit2isdesignedtoproduced3411MW~.Thisreportdescribestheresultoftheanalysesperformedtomodifytherodpositionindicationsystemtechnicalspecifications.1.2DefinitionofTermsThefollowinglistofsymbols,termsandabbreviationswillbeusedconsistentlythroughoutthisreportsBOLMOLEOLMWD/MTURCCAARPIT/SRTPPDILBeginningofLifeMiddleofLifeEndofLifeMegawattdayspermetrictonneofuraniummetal(representsburnupoffuel)RodClusterControlAssemblies(typeofcontrolrodsused)=AnalogRodPositionIndication(typeofsystemusedtodeterminetheaxialpositionofindividualcontrolrods)TechnicalSpecificationRatedThermalPowerPowerDependentInsertionLimit(representsinsertionlimitsforcontrolbanks)

APLAROQpopcmstepAllowablePowerLevel(Monthlysurveillancedeterminesthispowerlevel.Thispowerlev-elassuresthatlimitsonheatfluxhotchan-nelfactorsareprotected.)AllRodsOutChangeinreactivity(dp=lnk,/Qwherek,andQareeigenvaluesobtainedfromtwocalculations)Percentmille(areactivitychangeof1pcmequalsareactivitychangeof10~)Aunitofcontrolrodtravelequalto0.625inchppmk(Z)HFPHZPCAOCPartspermillionbyweight(specifieschemi-calshimboronconcentration)Heatfluxhotchannelfactor(maximumrodpoweratanyaxialleveldividedbyaveragerodpoweratthataxiallevel)Enthalpyrisehotchannelfactor(maximumrodpowerdividedbyaveragerodpower)F<normalizedtothemaximumvalueallowedatanycoreheightHotFullPowerHotZeroPowerConstantAxialOffsetControl(powerdistributioncontrolprocedure) 2.ARPZTECHNICALSPECIFICATION2.1ProblemDescritionThecurrentTechnicalSpecifications(T/Ss)allowanindividualRodClusterControlAssembly(RCCA)tobemisalignedfromthebankdemandpositionifthemisalignmentislessthan12steps.AsstatedintheNRCletterdatedOctober28,1979(Reference1-letterfromA.Schwencer,NRCtoJ.Dolan,AEP),Westinghouseperformedsafetyanalysesforcontrolrodmisalignmentupto24stepsatthetimeofthedevelopmentoftheStandardTechnicalSpecifications.TheletteralsonotedthattheAnalogRodPositionIndication(ARPI)systemisdesignedtoanaccuracyof12steps.Thus,inordertoguaranteearodmisalignmentoflessthan24steps,theindicatedARPIreadingsmustbenolargerthan12steps.ExperiencewiththeARPIsystemhasshownthattheindicatedmisalignmentcouldbegreaterthan12steps.Itshouldbenotedthattherewasnoevidenceofactualmisalignmentinthemajorityofcases.Proceduresareinplacetodealwithactualrodmisalignmentwhenitoccurs.InordertoreducetheactionitemsimposedduetothecurrentT/Slimits,itisnecessarytochangetheT/Stoallow18stepmisalignment.Therefore,analysesmustbeperformedfor30step(18stepindicated+12stepuncertainty)misalignment.2.2ProblemSolutionTheT/SsallowreactoroperationwiththecontrolrodsatPowerDependentInsertionLimit(PDIL).TheT/Ssalsopro-videlimitsforpeakingfactorsF<andFm,.Asthepowerlevelislowered,thelimitsforF<andFz,increaseaccord-ingto:

a.F~U'/Pb.F>,~[1+0.2(1-P))orF<<~[1+0.3(l-P))wherePisthefractionofRatedThermalPower.TheseincreasesinthelimitforF<andF>,canbeusedforaccommodatingincreasedRCCAmisalignmentatalowerpowerlevel.Thatis,at85%RTP,thelimitforpeakingfactor,F<<increasesby15%.Analysesmustshowthattheincreaseinpeakingfactorduetoa30-stepmisalignment(18stepindicated+12stepuncertainty)islowerthan15%.Ifitis,thenaT/Srequirementof18stepsispossibleuptoapowerlevelof85%RTP.At100%RTP,thecurrentlevelofmisalignmentof24steps(12stepindicated+12stepuncertainty)ismaintained.IfthemeasuredF<andF>,at100%RTParesmallerthanthecorrespondinglimitsat100%RTP,thenthesemarginscanbeusedforaccommodatinglargerthan12-step(indicated)misalignments.Thiscanbedeterminedonamonthlybasisincon)unctionwithincorefluxmapping.Theadvantageofthisprocedureisthattheinitialcondi-tionsfortransientsareunaffected.

RODMISALIGNMENTCONCERNS3.1ReactivitControlItisnecessaryatalltimestomaintainenoughreactivityoutofthecoretosafelycoverthepowerdefectwithasuitablemarginallowedforaccidents.Inordertomaintainthisrequiredshutdownmargin,arodbankPowerDependentInsertionLimit(PDIL)isset.Theamountofreactivityassociatedwiththisinsertionlimitiscalledtherodin-sertionallowance.RCCAswhicharemisalignedinwardfromtheirbankdemandpositionwilladdtotherodinsertionallowance.Thereactivityofamisalignedgroup(mis'alignedby30steps)wascalculatedtobelessthan120pcm(Table3.1-1).Thisissubstantiallylessthantheexcessshutdownmargingenerallyavailable.Tables3.1-2and3.1-3showexcessshutdownmarginforpastcyclesinbothunits.TheIUnit1PDILwillbechangedtomatchtheUnit2PDILatthebeginningofcycle14.Figures3.1-1and3.1-2showtheUnit1andUnit2PDILsrespectively.BymakingthePDILsimilarforbothunits,theUnit2analysesdetailedinthisreportcanalsobeappliedforUnit1.3.2ControlRodMisoerationTheworstcasecontrolrodmisoperationaccidenthasbeenpreviouslyanalyzed(Reference2,3)andfoundthatapplica-bleacceptancecriteriaaremet.

Amisoperationofcontrolrodsisdetectedby<a0b.c~d~changeinpowerlevelasseenbythenuclearinstrumen-tationsystemasymmetricpowerdistributionsasseenbythenuclearinstrumentationsystemorcoreexitthermocouplesrodbottomlightroddeviationalarmReactorprotectionforcontrolrodandcontrolbankdropeventisprovidedbythepowerrangeneutronfluxhighnega-tiveratetrip.Thisprotectionisaugmentedbythefollow-ingalarms:lowlevelandlow-lowlevelrodinsertionlimit.AdroppedRCCAbankresultsinareactivityinsertiongreat>>erthan500pcmwhichwillbedetectedbythepowerrangeneutronfluxnegativeratetripcircuitry.ForadroppedRCCAeventinautomaticrodcontrolmode,therodcontrolsystemdetectsadropinpowerlevelandiniti-atesbankwithdrawal.Powerovershootmayoccurduetothisafterwhichthecontrolsystemwillinsertthebanktore-storenominalpower.PowerovershootisnotimpactedsincetheexistinganalysisassumedRCCAdropfromAROposition.TheimpactduetopowerdistributionisminimalsincetheadditionalmisalignmentofsixstepsisallowedonlyifthereissufficientmargininF<andFz,atfullpower.PowerdistributioncalculationswereperformedandaredetailedinSection4.ZnthecaseofstaticallymisalignedRCCA,ananalysiswasperformedbythevendortoshowthattheDNBRdoesnotfall i<~eyIft belowthelimitvalue.ThemostseveremisalignmentwithrespecttoDNBRatsignificantpowerlevelsarisefromcasesinwhichoneRCCAisfullyinserted,orwherecontrolbankDisfullyinsertedwithoneRCCAfullywithdrawn.Multipleindependentalarms,includingabankinsertionlimitalarm,alerttheoperatorwellbeforethepostulatedconditionsareapproached.TheanalysiswasperformedwithcontrolbankDdeeplyinsertedasthecriteriaonDNBRandpeakingfactorwillallow.Tobeconservative,thePDILforUnit1willbemovedupbysevenstepstoaccommodatethepossiblesix-stepIImisalignment[SeeFigure3.1-2.Allowedinsertionof182stepsatHFPwaschangedto189stepsatHFP.]AcontrolrodwhichismisalignedfromitsbankatPDZLcanslightlyincreasetheavailableejectedrodworth.Calcula-tionswereperformedatHZPandHFPconditions.AnHZPmis-alignmentisnotaconcernsincethecalculationisper-formedforrodejectionfromafullyinsertedposition.Atfullpowerconditionsganincreaseinworthoflessthan30pcm(119pcm-:4=29.75pcm)inrodworthwascalculated.Sinceadequatemarginexistsbetweenthecalculatedpelletenergydepositionandtheacceptancecriteria,themisalignmentpresentsnoconcerninthisarea.Are-analysisoftheEOLHZProdejectioneventwasperformedtoaccountforeffectsofoperationdownto50%powerforextendedperiodsoftime(Reference10).Specifically,there-analysisaddressedincreasesintheejectedrodworthandhotchannelfactor.Theresultsshowedaveragefuelpelletenthalpyandfuelcentertemperaturetobebelowlimits.

3.4Power0erationwithaMisalinedRodTheNSSSvendorhasperformedsafetyanalysesforcontrolrodmisalignmentsupto24stepsfromthebankdemandpositiontoshowthatthemisalignmentwillnotcausepowerdistributionsworsethanthelimits.OperationwithanRCCAsignificantlymisalignedfromitsbankdemandpositionwouldnormallybedetectedandpromptlyrealigned.Intheunlikelyeventthatoperationwithacontrolrodmis-alignmentofgreaterthan24stepswouldoccur,theimpactonpowerdistributionwouldbeofconcern.TheincreaseinpeakingfactorsduetosingleRCCAmisalignmentmaybesmallbutmisalignmentofonegroupofRCCAsmaycontributetoincreasesinpeakingfactors.Powerdistributionswithcontrolrodmisalignmentof30stepswerethereforeevaluatedindetail,andtheresultsarepresentedinSection4ofthisreport.

4.POWERDISTRIBUTIONANALYSESNeutronicanalyseswereperformedtoevaluatetheimpactofRCCAmisalignmentonsteadystatepowerdistributionsandnormaloper-ationaltransientssuchasload-followoperations.Calculationsweredoneforbothinwardandoutwardmisalignmentsfromthede-mandcounterposition.Currenttechnicalspecificationsrequirethatthereactoroperationberestrictedtoa+5%axialoffsetbandaboutatargetaxialoffset(CAOCoperation).Thisrestrictioncontrolstheaxialpowerdistributionandminimizestransientxenoneffectsontheaxialpowerdistribution.ThereactorisoperatedbelowanAllowablePowerLevel(APL)whichassuresthatthepowerdistributionsarisingfromoperationunderthisstrategywillmeetthelimitonheatfluxhotchannelfactor.Thetechnicalspecificationonquadrantpowertiltratioassuresthattheradialpowerdistributiondoesnotdeviatesubstantiallyfromthemeasuredsteadystatepowerdistributionbetweenfluxmaps.Thereforelimitsonaxialoffsetandadrantowertiltratioarevitaltomaintaininsatisfactorowerdistributionandas-surethatmostoftheRCCAmisalinmentsaredetectedandcor-rectedinatimelmanner.

4.1AnalsisMethodTheprincipaltoolusedinthesecalculationsistheWestinghouseANCcode(Reference6)exercisedinathree-dimensionalmode.Fullcoreandquartercoremodelswereusedfortheanalyses.Inthismodel,eachfuelassemblyisdescribedbyfournodesintheXYplaneand26axialnodes.Themacroscopiccross-sectionsforANCweregeneratedbyPHOENIX-P(Reference7).ThecalculationswereperformedbyWestinghouseusingapprovedmethodology.ANCalsohasthecapabilityofcalculatingdiscretepinpowerandpinburnupfromthenodalinformation.TheF<~andF~+thusobtainedisshowninTables4.2-1through4.2-14.Itshouldbenotedthatasfarasthisanalysisisconcerned,weareinterestedinchangesinF<ratherthanabsolutevaluesofF<.TheUnit2,Cycle9ANCmodelwasusedfortheRPIanalysissinceUnit2corehasaxialblanketsandthereforemoreconservativecalculationfromapeakingfactorstandpoint.Also,theF<andFz<T/SlimitsareslightlymorerestrictivefortheremainingANFfuelinunit2.Inordertoshowthatthecalculationaltoolsusedintheanalysisarereasonable,theUnit2,Cycle9ANCmodelwasdepletedandresultsofthepowerdistributionandboronletdowncalculationswerecomparedtothemeasuredvalues.ThisisshowninAppendixA.TheloadingpatternandcontrolrodlocationsforUnit2,Cycle9areshowninFigures4.1-1and4.1-2.TheloadingpatternandcontrolrodlocationsforUnit1,Cycle13are

showninFigures4.1-3and4.1-4.4.2MisalinmentCalculationsThefirststepwastodetermineapowerlevelatwhichthepeakingfactorincreaseduetoRCCAmisalignmentof30steps(18stepindicated+12stepuncertainty)couldbeaccommo-dated.Therefore,misalignmentcalculationsfromPDILwereperformed.ThequestionofmultipleRCCAmisalignmentwasaddressedbyanalyzingmisalignmentsofgroupsofRCCAsinthecontrolbank(Groups1and2inControlBankD).GroupmisalignmentwasconsideredsinceitismorerealistictoassumethattheRCCAsinonegroupwouldmis-stepratherthandifferentRCCAsfromdifferentgroupswouldmis-step.However,somesingleRCCAmisalignmentcalculationswerealsoperformed.Especially,misalignmentofRCCAH-8wasinvestigatedsinceitisinthemiddleofthecoreandwillbedifficulttodetectthroughmonitoringexcoredetectorquadranttilt.First,thechangeinpeakingfactorsduetooperationatlowerpowerlevelswithoutRCCAmisalignmentswasinvestigated.AsseeninTable4.2-1,peakingfactorsF<andFz<donotchangesubstantiallywithpowerchangeaslongasthereactoroperationisonCAOC.Misalignmentcalculationswerethenperformedat85%RTP.ThemisalignmenteffectofasingleRCCAH-8andthemisalignmenteffectofgroup1and2wereinvestigated.FromTable4.2-2,itcanbeseenthatthemaximumincreaseinF<is4.7%andmaximumincreaseinF~,is2.1%.SimilarcalculationsatMOLgaveamaximumincreaseof6.6'tinF<and0.7%inF>,(Table4.2-3).EOLcalculationsyieldedanincreaseof7.4%inF<and0.9%inF>,(Table4.2-4).

Asnotedinprevioussection,theequationsgoverningthelimits(ANFfuel)forF<andF~areasfollows:~e2.1xP(z)PF~(=1.49[1+0.2(1-P))Therefore,thelimitsat85%RTPwillbe:FLac$5%RlP~247FIJmh$$%RTPItisevidentthatthelimitforF<increasedby17.6%andthelimitforF~increasedby2.6%at85%RTP.Therefore,a+18stepsmisalignmentisacceptableuptoapowerlevelof85'%TPeOthersensitivityrunswerealsomadeforsimilarRCCAmis-alignmentsfromdifferentD-bankpositionsotherthanPDIL.ResultsofmisalignmentcalculationsfromD-bankpositionof215stepsisshowninTable4.2-5.Table4.2-6showstheresultsofcalculationsat50%RTPwithcontrolbankatPDIL(i.e.,Dat94.5stepsandCat222.5steps).ThemaximumincreaseinF<inthesecalculationswasfoundtobe7.3%andmaximumincreaseinF>,wasfoundtobe2.7%.FullcoreanalysisforinvestigatingsingleRCCAmisalign-mentwasperformed.RCCAsH-12andD-12weremisaligned30stepsfromAROandPDILandincreasesinF<andFz,.noted.12 S

FromTables4.2-7,itcanbeseenthatF<increasedby1.7%andFz,increasedby0.9%.Thisisaccommodatedbytheincreasesinlimitsat85%RTP.ItshouldalsobenotedthattheimpactofRCCAH-8misalignmentonpeakingfactorissmall.Therefore,itcanbeconcludedthata18-stepmisalignmentupto85%RTPcanbetolerated.Thenextstepwastoperformsensitivitycalculationstodeterminetheadditionalmisalignment(above12stepsindi-cated)allowedatpowerlevelsbetween85%RTPand100%RTP.Forthis,misalignmentcalculationswereperformedfor24steps(12stepindicated+12stepuncertainty),27steps(15stepindicated+12stepuncertainty),and30steps(18stepindicated+12stepuncertainty).Thesecalculationsat100%RTPwereperformedforthefollowingRCCAsincon>>trolbankD:H-8,RCCAsinGroup1andRCCAsinGroup2.ResultsfromthesecalculationsareshowninTables4.2<<8through4.2-10.SensitivityrunsweremadeforasimilarmisalignmentcasefromaD-bankpositionof215stepsratherthanfromPDIL.ResultsareshowninTables4.2-11and4.2-12.ReviewoftheseresultsshowsthatthechangeinF<is2.2%andFz,is0.4%.ThesechangesaresimilartothechangeinpeakingfactorsduetomisalignmentfromPDIL.TheeffectofasingleRCCAmisalignment(D-12,K-14,H-12andK-8)onpeakingfactorsisshowninTable4.2-13;asseenbefore,theimpactissmall.TheincreaseinF<duetoanadditionalmisalignmentofthreestepsovertheexisting12step(indicated)misalign-13 mentwasfoundtobe0.9%.Theincreaseduetoanaddition-almisalignmentofsixstepswasfoundtobe1.6%.Additionalload-followcalculationsindicateanincreaseof3.4%.SincetheanalysiswasperformedforatypicalcyclegtheF<marginnecessaryisincreasedto6%forconservatism.Thismeansthatifamarginof6%inF<exists,thenanadditionalmisalignmentofsixsteps(i.e.,totalof18steps-indicated)isallowedat100%RTP.AsfaraspeakingfactorFz,isconcerned,a0.5%increaseoverthe12-stepmisalignmentcaseisnoted.Load-followcalculationsindicatethata0.8%marginisrequired.Thiswastheincreasecalculatedforthe18-stepcaseoverthe12stepcase.Znconclusion,itcanbementionedthatiftherequirementsgiveninT/s3.1.3.1aresatisfied,T/SlimitsonF<andF~,willnotbeviolatedevenwithan18-step(indicated)misalignment.SincetheTSlimitlnconditionsforoera-tionsarenotviolatedtheinitialconditionsassumedinaccidentanalsesarenotviolated.4.3Load-FollowTransientwithRCCAMisalinmentEffectofload-followmaneuverandmisalignmentonpeakingfactorswasinvestigated.Axialpowerdistributionwhichcouldbeobtainedduringaload-followoperationwasobtainedbyskewingtheEOLxenondistributiontothebottom.Thisisaconservativeassumptionsincetypicalload-followunderCAOCruleswillnotgiveaskewedxenondistributionasthis.AnoptionintheANCcodewasusedtogettheskewedxenondistribution.14-TheresultsoftheanalysisisshowninTables4.3-1through4.3-3.TheeffectofsingleRCCAH-8misalignmentissmallasbefore.ThechangeinF<duetogroupmisalignmentwasfoundtobe3.4%.4.4Unit1Alicabilit'heanalysesinprevioussectionswereperformedforUnit2(3411MWt)whichconsistsof17x17fuelassemblies.TheUnit1core(3250MWt)consistsof15x15fuelassemblies.Bothunitshave12feetcoresconsistingof193assemblies.Thedifferenceinthefueltypeisnotconsideredtobesig-nificantforthistypeofanalysis.Moreover,theUnit1PDZLhasbeenmoveduptomatchtherevisedUnit2insertionlimitshowninFigure3.1-1.SincetheT/Ssallowa12-stepmisalignmentforbothunitscurrently,regardlessofthefueltypeorpowerlevel,andsincethePDILwillbethesameforbothunits,theanalysesperformedforUnit2isapplicableforUnit1.AsensitivitystudyusingthePHOENXX/ANCmodelforUnit1,Cycle13showsthattheresponseduetorodmisalignmentisalmostthesameasthatinUnit'.AsshowninTable4.4-1,BOLcalculationsforUnit1yieldedachangeof6.2%and1.1%forF<andFz<<respectively.AlthoughthechangeinF<isslightlyhigherinUnit1comparedtoUnit2,suchdifferencesareexpectedandareaccountedforintheF<marginnecessarytoachieve18stepmisalignmentatfullpower.

TECHNICALSPECIFICATIONCHANGESANDIMPLEMENTATION5.1TechnicalSecificationChanesFromtheanalysesdetailedinSection4.0,itcanbeseenthattheincreaseinpeakingfactorF<duetoanRCCAmisalignmentof30steps(18stepindicated+12stepuncertainty)islessthan8%andtheincreaseinF>,islessthan3%.Theseincreasesinpeakingfactorscanbeaccommodatedatapowerlevelof85%RTP.Therefore,therevisedT/SsallowRCCAmisalignmentsof+18steps(indicated)uptoapowerlevelof85%RTP.[ThecurrentT/Ssallowrodmisalignmentof+12steps(indicated)upto100%RTP.)AnalysisdetailedinSection4alsoshowsthata3.4%margininF<isnecessarytoaccommodateamisalignmentof30steps(18stepsindicated+12stepuncertainty)atfullpower.Thatis,F<increasesby3.4%foran18-step(indicated)misalignmentcomparedtoa12-step(indicated)misalignment.Forconservatism,thisisincreasedtorequireamarginof6%inFg,ThecurrentT/Sbasisreferencesa4%F>,marginforuncertaintiesarisingfromabnormalperturbationsinradialpowershape.Thisanalysisshowsthata0.8%margininF~,isrequiredtotakeintoaccountan18-step(indicated)misalignment.Therefore,theconservativerequirementof4%marginisretainedandisadheredtoinastrictmannerbyspecifyingthisrequirementinT/Sfigure3.1-4(AppendixB)~

ItshouldbenotedthatthemargininF<isthatavailablebeyondtheexpectedtransientF<andiscomputedinthefol-lowingway:F<(measured-steadystate)F<(penalized)F<(transient)F<(limit)FM=FqMX1.03X1.05FgwX1~03X1+05XV(Z)Fq"Xk(Z)marginFxk(Z)Fzx1.03x1.05xV(Z)ComparedwiththedefinitionofAPLinT/S3.2.6,themargindefinedaboveisessentiallytheAPL.Notethatthemargincalculatediswithrespecttothelimitat100%RTP.InasimilarmannerthemargininF~,(definedasR)iscalculatedinthefollowingway:F>,(measured-steadystate)F~)(limit)=F~iNFUmh100%RTPhllmarginRFLimfc100%RTPhHNF~HTherefore,iftheAPLgiveninthemonthlyincorefluxmapis106%andifthevalueofR(margininFz,)is1.04,thenanadditionalsix-stepmisalignmentisallowedabove85%RTP.IftheAPLislower,thenaloweramountofmisalignmentisallowed.ThisisgraphicallyshowninT/S17 Figure3.1-4.Sinceanewrodinsertionlimitwasusedintheanalysis/theunit1PDZLwillbechangedtoreflectthelimitusedintheanalysisatthebeginingofcycle14.TheupdatedT/SpagesforbothunitsaregiveninAppendixB.18 p8ge 5.2TechnicalSecificationImlementationAsseeninSection5.1,theupdatedT/Ssallowarodmis-alignmentof+18stepsforpowerlevelslessthanorequalto85%RTP.Above85%RTP,thelevelofmisalignmentallowedisbasedonthepeakingfactorsobtainedfromthemonthlyincorefluxmaptaken.Forthis,theplantprocedure,"Surveillanceofcorepowerdistributionlimit/"(**1EHP4030STP.330and**2EHP4030STP.330)willberevisedtoprovidetheallowedrodmisalignmentonamonthlybasis.TheincorefluxmapgivesthevaluesforAPLandF>,andfromT/SFigure3.1-4,theadditionalrodmisalignmentisobtained.Forexample,ifanincorefluxmaptakenat98%RTPgivesthefollowing:FolclMRdhH1.40APL103%Therefore,~mimit1000hHHeaaurod~he1.491.404$1.064

SincethevalueofRobtainedisgreaterthan1.04,fromT/SFigure3.1-4,foranAPLof103%,amisalignmentof15stepsisobtainedforpowerlevelsgreaterthan85%RTP.Znordertoassistthereactoroperatorlndeterminingtheallowedrodmisalignment,aplotasshownbelowmaybeprovided.ALLONfEDRODMISALIGNMENTARM(STEPS)262016-6-00204060RATEDTHERMALPOWER(%)80100 6,SUMMARYRCCAmisalignmentsupto30steps(18stepsindicated+12stepsuncertainty)wereevaluatedforimpactonpeakingfactorsandreactivityworths.Areviewoftheresultsofthetransientanalysesshowedthatadequateconservatismexistsintheanalysestoabsorbthepenaltiesassociatedwithincreasedrodmis-alignment.Asaconservativemeasure,thepowerdependentinser-tionlimit(PDIL)willbemovedslightlyupwards.Powerdistributionswereevaluatedundersteadystateandload-followconditionswithrodmisalignmentof30steps(18stepsindicated+12stepsuncertainty)showedthattheincreaseinpeakingfactorscouldbeaccommodatedatorbelow85%RTP.Calculationsalsoshowedthatabove85%RTP,amisalignmentof30steps(18stepsindicated+12stepsuncertainty)couldbeaccommodatediftheAPLisatleast106%andthemargininFz,isatleast4%.Itshouldbenotedthattypicalplantoperationiswithcontrolrodsessentiallywithdrawnfromthecoreandunderconstantaxialoffsetcontrol.Also,thequadranttiltismonitored.This,coupledwiththefactthatactualcontrolrodmisalinmentsarerareshowsthatthisanalsisisconservative.Anactualcon-trolrodmisalinmentwouldberomtlrealineduonverifica-tionofitsosition.Basedonthis,thetechnicalspecificationchangesgiveninthisreportdonotincreasetheprobabilityofanaccidentordecreasesafetymarginspreviouslyestablished.21 TABLE3.1-1RODWORTHCALCULATIONBank/GroupRodworth(pcm)DeltapcmControlBankD9189248.3ControlBankD8189,Grou28159ControlBankD9189,Group19159367.7349.6119.4101.322

~'

TABLE3.1-2UNIT1SHUTDOWNMARGINParameterCycle101213NetRodWorth[(ARI-1)*0.9]HFPRequirement66206399338035006170350059135807297029565837296857642970587054795743339029042274573322935736576823192461RequiredShutdownMarginExcessShutdownMargin16001750164011491750920175017501193110117501119175010441600160016008809751869160018401600160018171707Note:Allreactivityvaluesinpcm23 TABLE3.1-3UNIT2SHUTDOWNMARGINParameterCcleNetRodWorth[(ARI-1)*0.9)HFPRequirement566032805130323052105484547133603150315054093150590856264779274031292324RequiredShutdownMarginExcessShutdownMargin1600780160030016001600160025073472116006592000160016001168897855Note:Allreactivityvaluesinpcm TABLE4'-1UNIT2CYCLE9EOLDINTOHOLDTARGETAODescription100%RTP,ARO75%RTP,DinfortaretAO50%RTP,DinfortargetAO25%RTP,DinfortargetAOl.696l.64416031.6541.4231.4091.4441.483

~'

TABLE4.2-2UNIT2CYCLE9BOL85%RTP30STEPSFROMPDIL18+12RodPositionAROD8PDIL(160.7D8PDIL,H-88190.7D8PDIL,H-88130.7D9PDIL,GP29190.7D9PDIL,GP29130.7D8PDIL,GP18190.7D8PDIL,GP19130.7DeltaFDeltaFz,1.8322.0392.0272.0441.9542.1341.9702.1174.7%1.4751.4651.4931.4491.4901.4561.4401.4962.1%Notes1)ControlBankDLocationsGroup1:D4,D12,M12,M4Group2:H4,D8,H12,M8,HS2)DeltaF<6DeltaF~,isthepercentdifferencebetweenhighestvalueandvalueforthecasewithD-bankatPDIL

~~'I TABLE4.2-3UNIT2CYCLE9MOL85%RTP30STEPSFROMPDIL18+12RodPositionAROD8PDZL160.7D8PDZL,H-89190.7D9PDZL,H-89130.7D9PDZL,GP29190.7D9PDIL,GP29130.7D9PDZL,GP19190.7D9PDZL,GP19130.7DeltaFDeltaF~,1.7402.1822.1582.2062.0262.3262.0502.3066.6't1~4741.4741.4731.4751.4701.4831.4841.4750.7%27 I~

TABLE4.2-4UNIT2CYCLE9EOL85%RTP30STEPSFROMPDIL18+12RodPositionAROD8PDZL160.7D9PDZL,H-89190.7D9PDZLiH-89130.7D8PDZL,GP28190.7D9PDZL,GP28130.7D8PDIL,GP18190.7D9PDZL,GP19130.7DeltaFDeltaF>,1.6972.2252.1912.2532.0362.3892.0612'687.4%1.4091.4121.4241.4171.4151.4191.4101.4150.9%

TABLE4.2-5UNIT2CYCLE9EOL85%RTP30STEPSFROM215STEPS18+12RodPosh.tionAROD8215STEPSD8215,H-89231D9215,H-89185D8215,GP29231D8215,GP29185D9215,GP19231D8215,GPl8185DeltaFDeltaF>,l.6971.6401.6641.6071.6881.7591.654l.7277~3't1.4091.4041.4141.3961.4131.4031.4001.4422~7't TABLE4.2-6UNIT2CYCLE9BOL50%RTP30STEPSFROMPDIL18+12RodPositionD850%PDIL(94.5)C950%PDIL222.5DGC950'tPPDILDGP2964'DGC950'tPPDILDGP28124.5D&C950'tPPDILCGP28192.52.5972.6152.4792.7021.4891.5111.4761.495DeltaFDeltaF~4.0%1.5%30 41 TABLE4i2-7UNIT2CYCLE9EOL85%RTP30STEPSFROMPDIL18+12RodPositionAROD8PDIL160'D8PDIL,D-129130.7D8PDIL,K-149195.0D9PDIL,H-1281307D8PDIL,K-88195~01.6972.2252.2622.2452.2572.2391.4091.4121.4251.4181.4231.416DeltaFDeltaF~,17%0.9%31 I

TABLE4.2-8UNIT2CYCLE9EOL100%RTP24STEPSFROMPDIL12+12RodPositionAROD8PDIL189.0D9PDZL,H-89213D9PDIL,H-89165D8PDZL,GP28213D8PDZL,GP29165D8PDZL,GPl9213D8PDZL,GPl9165DeltaFDeltaF~,1.6962'692.0402.0991.90622201.9342.1987~3't1.4231.3961.4481~3911.4421.3921.3851.4213~7't32 TABLE4.2-9UNIT2CYCLE9EOL100'%TP27STEPSPROMPDIL15+12RodPosi.tionAROD8PDIL189D9PDIL,H-89216D9PDIL,H-89162D9PDIL,GP29216D8PDIL,GP28162D9PDIL,GP19216D8PDIL,GP19162DeltaFDeltaF~1.6962.0692.0352.1031.8912.2381.9212.2168.2%1.4231.3961.4531.3921.4471.3931.3871.4244.1%33 TABLE4.2-10UNIT2CYCLE9EOL100%RTP30STEPSFROMPDIL18+12RodPositionF&AROD8PDIL189D8PDIL,H-89219D9PDIL,H-88159D9PDILiGP29219D8PDIL,GP28159D9PDIL,GP19219D9PDIL,GP18159DeltaFDeltaFz,1.6962.0692.0332'061.8842.2541.9172.2308~9't1.4231.3961.4551~3921.4491.3541.3881.4264.2%

0tIll TABLE4.2-11UNIT2CYCLE9EOL100'%TP24STEPSFROM215STEPS12+12RodPositionAROD8215STEPSD8215,H-89231D9215,H-89191D8215,GP28231D9215,GP29191D8215,GP19231D8215,GP19191DeltaFDeltaF~,1.6961.7371.7321.7691.7131.90717201.8769.8%1.4231.4191~4281.3811.4271.3861.4161.4461.9%35 0EI TABLE4.2-12UNIT2CYCLE9EOL100%RTP30STEPSFROM215STEPS18+12RodPositionAROD8215STEPSD9215,H-89231D8215,H-89185D9215,GP29231D9215,GP29185D8215,GP19231D9215,GP18185DeltaFDeltaF~1.6961'371.7321'771.7131'451.7201.91112'%1.4231.4191.4281.3821.4271.3891.4161.45223%36

TABLE4.2-13UNIT2CYCLE9EOL100%RTP30STEPSFROMPDIL18+12RodPositionAROD8PDIL189.0D8PDIL,D-129159.0D8PDIL,K-148195.0D8PDIL,H-129159.0D8PDIL,K-89195.01.6962.0692.1092.0912.1072.0881.4231.3961.4051.4011.4001.394DeltaFDeltaF~,1.9%0.7%37 TABLE4.3-1UNIT2CYCLE9EOL100%RTP24STEPSFROMPDIL12+12LOAD-FOLLOWMODERodPositionD8PDIL189D8PDIL,H-89213D8PDIL,H-89165D8PDIL,GP29213D9PDIL,GP29165D9PDIZ,GPl9213D8PDIL,GP19165DeltaFDeltaF~<2.1081.6851.7431.6491.9041.6371.8121.67313.0%1.4091.4001.4421.4061.4341.4081.3961.4043.0%38 TABLE4.3-2UNIT2CYCLE9EOL100%RTP30STEPSFROMPDIL18+12LOAD-FOLLOWMODERodPosit'.onD8PDIL189D9PDIL,H-89219D9PDIL,H-88159D9PDIL,GP29219D8PDIL,GP29159D8PDIL,GP18219D8PDIL,GPl8159DeltaFDeltaFz,2.1081.6851.7641.6481.9621.6761.8441.67316.4%14091.4001.4531.4071.4451.4101.4001.4083.8%

TABLE4.3-3UNIT2CYCLE9EOL100%RTP30STEPSFROM215STEPS18+12LOAD-FOLLOWMODERodPositionAROD8215STEPSD8215,H-88185D8215,H-89231D9215,GP28185D8215,GP28231D6215,GP19185D8215,GPl9231DeltaFDeltaF~<2.1082.0441.9842.0731.8192.0991.9362.0552.7%1.4091~4031.3911.4151.4021.4131.4471.3983.1%

TABLE4.4-1UNIT1CYCLE13BOL85%RTP30STEPSFROMPDIL18+12STEPSRodPositionAROD8PDIL(160.7)D8PDIL,H-89190.7D9PDIL,H-88130.7D9PDIL,GP28190.7D8PDIL,GP29130.7D8PDIL,GP18190.7D8PDIL,GP19130.7D8PDIL,B109190o7D8PDIL,B109130i7DeltaFDeltaF~1.5561.7811.7561.8041.6711.8921.6971.8681.7591.8026.2%1.3811.4261.4301.4221.4191.4381.4151.4421.4411.4401.1%Note:ControlBankDLocations:Group1:F2,B10,K14,P6Group2:B6,F14,P10,K2,H8 RODGROUPINSERTIONLIMITSvs.POWERUNIT-2STEPS(0.545,231)2004BANKC(1.0,189)150,128)1004BANKD50(0)00'.20.40.60.8FRACTlONOFRATEDTHERMALPOWERFigure3.1-1 Figure4.l-2CONTROLANDSHOTDOMNRODLOCATIONS'PNNLKJHGFE0CBA180'789O~9SASaDSCCDDSCDSD270SADSABDSEISDDSABANKSASBS8SABC0OoNUMBEROFRODCLUSTERS454I FIGURE4.1-1900COOKNUCLEARPLAN1UNIT2CYCLE9CORELOADINGPATIZRNRPNMLKJHGFEDC8AIIIIIII10810899118118118118118118911811811810A118911810A99108108910810811A'0A1,1810811A10A11811811810A10A1.1A11A10810A11A10A11A108.11A10810A'1811A11A118911810810811A10A10810A11A10A10A10A1189.10811A10810A118108'11A'0B118910811810B10A11A10A9118910410A11A118910A11810C1.1810A'0811A108118910A11810810811810811A10B31810811/'IOA11811830A1-1A11A10810A11A'0810A10A10A1081.1A10811A10A11A11A.10A108MB11A10A.1'IA10A11811810811891011A11A-111OA10A1181210A118911811899911810A11811810810891081181181181089-131181189991081500LEGENDRR:REGIONIDENTIFIER~~II RODGROUPINSERTIONLIMITSvs.POWERUNIT-3STEPS(0.545,231)200~4BA(1.o,1sg)150(o,12s)100rrr%BANKD5000(o,o)0.20.40.60.8FRACTIONOFRATEDTHERMALPOWERFigure3.1-2

FIGURE4.1-3D.C.COOKUNIT1CYCLE13CORELOADINGPATTERNRPN'lLKJHGFEDC8A13814A14814A14814A13813813814A15A15815815814814815A14A15815A14A14A15814815815A14815813814A13815A15813815814814A15A13815A14A15A15A14A14815A14814A13815A15A14A14A15A15815A148158138-514A15814813815A13A15A14A15A13A15A13814815814A.-614815A14A90o14A15814A14815A14A15A14A15A14814814A15A14A15A13A15813A15813A13815815813A15A14A15A14A15A14814814A15A14A15A14A15814A15A14A-81489148-714A15814813815A13A15A14A15A13A15A13814815814A-1013815814815A15815A14A15A14A15A13814A15A14814A14815A15A13814A15A15A14A14815815815A1381213814A13815814814815A15815814A15A"14A14A15815A14815814815815815A14A13813814A14814A14814A138LEGENDp0R':REGIONIDENTIFIER"-46-'

Fi.gure4.1-4ControlRod'atternforOonaldC.Cook1RPNMLKJH180GFE0,CBAAbsorberMaterial'g-In-CdSA789010SgSASASOsASB27O'21314.15BANKSASBSCS~ACscOoSYMBOLNUMBEROFROOCLUSTERS8~848489 7."APPENDICESAppendixA:AppendixB:Unit;2,Cycle9ANCModelTechnicalSpecificationPages APPENDIXAUNIT2CYCLE9ANCMODELResultsoftheUnit2,Cycle9coredesignusingWestinghousecodesystemPHOENIX-P/ANCandmethodologyarecomparedtomeasureddata.TheresultsfromtheZeroPowerPhysicsTestingaregiveninTablesA-l,A-2,andA-3.HFPcriticalboronobtainedfromANCwascomparedtothemeasuredcriticalboronandisshowninFigureA-l.Itshouldbenotedthatthesmalldeviationfromthedesigndataisduetotheboron-10depletionphenomena.TheBOLandMOLradialassemblypowerdistributionsaregiveninFigureA-2andA-3.ReviewofthesedataindicatethattheANCmodelisadequateforpowerdistributionanalyses.-49 TABLEA-1HZPMODERATORTEMPERATURECOEFFIC1ENTTemperatureMTC-MTC547F0.14pcm/'FTABLEA-2HZPRODWORTHMEASUREMENTBank%ErrorCBD0.19CBC-3.02CBB-7.06CBA-4.79SBD-6.03SBC-4.92SBB-1.62SBA.-10.14TOTAL-3.86TABLEA-3HZPBORONENDPOINTMEASUREMENTBankCMeanCDeolyaBSARO6.9ppmCBDIn8.7ppm Unit2Cycle9BoronLetdownCurve1300120011001000*0~A0009008007006005004003002001000123CriticalBoron-DesignCurveMeasuredData456789101112131415161718Burnup(GWD/MTU)

FIGUREA-2D.C.COOKUNIT2CYCLE9BOCHFPPOWERDISTRIBUTIONH0.8130.8060'07+1.3941.3820.0121.2541.2190.0351012131415l.1111.120-0.009+1.33513220.013+1.1251.0810.044+0.9740.980-0.006+1.2101.2070.0030.4120.426-0.014+1.2191.1680.051+1.1941.198-0.004+1.3051.2930.012+1.1331.139-0.006+1.1891.190-0.001+0.4110.419-0.0081.0141.032-0.0181.243'1.2330.0101.1321.0840.0481.1841.1780.006+l.1911.197-0.0060.4880.507-0.0191.1481.159-0.011-+1.2531.2490.004+1.0231.031-0.008-+1.1471.1470.000+0.3260.336-0.010D1.0031.004-0.001--+1.0721.102-0.030+0.9200.924-0.004+0.5000.517-0.0170.2560.267-0.011STANDARDDEVIATION=0.020POWERLEVELCYCLEBURNUP100489MWD/MT1.1011.0980.003MAP209-10ANCDIFFERENCE152 FIGUREA-3D.C.COOKUNIT2CYCLE9MOC90%RTPPOWERDISTRIBUTIONH0.7710776-0.00510121314151.3361.3250.011+0.9680.973-0.005+1.3301.3190.011+10171.031-0.014+0.9050.925>>0.020+1.2521.2360.016+0.4490.464.-0.015+1.0381.055-0.0171.0221.0180.004+1.0961.105-0.009+1.3591.3390.0201'761.0750.0011.2671.2600.0070.4540.463-0.009+0.9460.947-0.0011.3731.3530.020+1.0691.079-0.010+1.1221.1160.0061.2701.2660.0040'450.556-0.011+1.1571.165-0.008+1.3621.372-0.010+1'101.013-0.003-+1.1671.177-0.010+0.3550.366-0.011D1.0271.035-0.008+1.2531.2420.0110.9280.9260.002+0.5760.583-0.0070.2920.303-0.011+STANDARDDEVIATION=0.011POWERLEVEL904CYCLEBURNUP9247MWD/MT1.1011.0980.003MAP-209-28ANCDIFFERENCE-53 APPRNDIXBTECHNICMISPECIFICATIONPAGES REACTIVITYCONTROLSYSTEMS3413MOVABLECONTROLASSEMBLIESGROUPHEIGHTLIMITINGCONDITIONFOROPERATION3.1.3.1Allfulllength(shutdownandcontrol)rodsshallbeOPERABLEwithallindividualindicatedrodpositionswithintheallowedrodmisalignmentoftheirgroupstepcounterdemandpositionasfollows:oforTHERMALPOWERlessthanorequalto85XofRATEDTHERMALPOWER,theallowedrodmisalignmentisJ18steps,andoforTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignmentisJ12stepsorasdeterminedfromFigure3.1-4.Figure3.1-4permitsforanallowedrodmisalignmentfrom~13steps(forAPLequalto101X)to+18steps(forAPLgreaterorequalto106X)providedthevalueofR(definedinFigure3.1-4)isgreaterthanorequalto1.04.APPLICABILITY:MODES1*and2*ACTION'.Withoneormorefulllengthrodsinoperableduetobeingimmovableasaresultofexcessivefrictionormechanicalinterferenceorknowntobeuntrippable,determinethattheSHUTDOWNMARGINrequirementofSpecification3.1.1.1issatisfiedwithin1hourandbeinHOTSTANDBYwithin6hours.b.Withmorethanonefulllengthrodinoperableormisalignedfromthegroupstepcounterdemandpositionbymorethantheallowedrodmisalignment,beinHOTSTANDBYwithin6hours.c.WithonefulllengthrodinoperableduetocausesotherthanaddressedbyACTIONa,above,ormisalignedfromitsgroupstepcounterdemandpositionbymorethantheallowedrodmisalignment,POWEROPERATIONmaycontinueprovidedthatwithinonehoureither:1.TheaffectedrodisrestoredtoOPERABLEstatuswithintheabovealignmentrequirements,or2.TheaffectedrodisdeclaredinoperableandtheSHUTDOWNMARGINrequirementofSpecification3.1.1.1issatisfied.POWEROPERATIONmaythencontinueprovidedthat:a)AreevaluationofeachaccidentanalysisofTable3.1-1isperformedwithin5days;thisreevaluationshallconfirmthatthepreviouslyanalyzedresultsoftheseaccidentsremainvalidforthedurationofoperationundertheseconditions,and*SeeSpecialTestExceptions3.10.2and3.10.4COOKNUCLEARPLANT-UNIT13/41-18AMENDMENTNO.45,Q8,420 REACTIVITYCONTROLSYSTEMSLIMITINGCONDITIONFOROPERATIONContinuedb)TheSHUTDOWNMARGINrequirementofSpecification3.1.1.1isdeterminedatleastonceper12hours,andc)ApowerdistributionmapisobtainedfromthemovableincoredetectorsandF~(Z)andF~areverifiedtobewithintheirlimitswithin72hours,andd)EithertheTHERMALPOWERlevelisreducedtolessthanorequalto75XofRATEDTHERMALPOWERwithinonehourandwithinthenext4hoursthehighneutronfluxtripsetpointisreducedtolessthanorequalto85XofRATEDTHERMALPOWER,ore)TheremainderoftherodsinthegroupwiththeinoperablerodarealignedtowithintheallowedrodmisalignmentoftheinoperablerodwithinonehourwhilemaintainingtherodsequenceandinsertionlimitsasspecifiedintheCOLR;theTHERMALPOWERlevelshallberestrictedpursuanttoSpecification3.1.3.5duringsubsequentoperation.SURVEILLANCEREUIREMENTS4.1.3.1.1Thepositionofeachfulllengthrodshallbedeterminedtobewithinthegroupdemandlimitbyverifyingtheindividualrodpositionsatleastonceper12hoursexceptduringtimeintervalswhentheRodPositionDeviationMonitorisinoperable,thenverifythegrouppositionsatleastonceper4hours.4.1.3.1.2EachfulllengthrodnotfullyinsertedinthecoreshallbedeterminedtobeOPERABLEbymovementofatleast8stepsinanyonedirectionatleastonceper31days.4.1.3.1.3TheallowedrodmisalignmentforTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWERshallbedeterminedinconjunctionwiththemeasurementofAPLasdefinedinSpecification4.2.6.2.COOKNUCLEARPLANT-UNIT1P3/41-19AMENDMENTNO.420, ALLOWEDRODMISALIGNMENTABOVE85%RTPFIGURE3.1-420STEPS19171615ApplicablewhenRL'I%LITo>1.04id'%TP13WereR=FN100101102103104105106107108APLCOOKNUCLEARPLANT-UNIT13/41-19bAmendmentNo.

REACTIVITYCONTROLSYSTEMSPOSITIONINDICATORCHANNELSLIMITINGCONDITIONFOROPERATION3.1.3.2AllshutdownandcontrolrodpositionindicatorchannelsandthedemandpositionindicationsystemshallbeOPERABLEandcapableofdeterminingtherodpositionswithintheallowedrodmisalignmentspecifiedinSpecification3.1.3.1.APPLICABILITY:MODES1and2.ACTION'.Withamaximumofonerodpositionindicatorchannelpergroupinoperableeither:1.Determinethepositionofthenon-indicatingrod(s)indirectlybythemovableincoredetectorsatleastonceper8hoursandimmediatelyafteranymotionofthenon-indicatingrodwhichexceeds24stepsinonedirectionsincethelastdeterminationoftherod'sposition,or2.ReduceTHERMALPOWERtolessthan50XofRATEDTHERMALPOWERwithin8hours.b.Withamaximumofonedemandpositionindicatorperbankinoperableeither:1.VerifythatallrodpositionindicatorsfortheaffectedbankareOPERABLEandthatthemostwithdrawnrodandtheleastwithdrawnrodofthebankarewithinamaximumoftheallowedrodmisalignmentofeachother,atleastonceper8hours,or2.ReduceTHERMALPOWERtolessthan50XofRATEDTHERMALPOWERwithin8hours.SURVEILLANCEREUIREMENTS4.1.3.2EachrodpositionindicatorchannelshallbedeterminedtobeOPERABLEbyverifyingthedemandpositionindicationsystemandtherodpositionindicatorchannelsagreewithintheallowedrodmisalignmentatleastonceper12hoursexceptduringtimeintervalswhentheRodPositionDeviationMonitorisinoperable,thencomparethedemandpositionindicationsystemandtherodpositionindicatorchannelsatleastonceper4hours.COOKNUCLEARPLANT-UNIT13/41-20AMENDMENTNO.~

POWERDISTRIBUTIONLIMITSBASES34.22and3423HEATFLUXHOTCHANNELFACTORANDNUCLEARENTHALPYRISEHOTCHANNELFACTORThelimitsonheatfluxhotchannelfactor,andnuclearenthalpyrisehotchannelfactorsensurethat1)thedesignlimitsonpeaklocalpowerdensityandminimumDNBRarenotexceededand2)intheeventofaLOCAthepeakfuelcladtemperaturewillnotexceedthe2200'FECCSacceptancecriterialimit.Eachoftheseismeasurable,butwillnormallyonlybedeterminedperiodically,asspecifiedinSpecifications4.2.2.1,4.2.2.2,4.2.3,4.2.6.1and4.2.6.2.Thisperiodicsurveillanceissufficienttoensurethatthehotchannelfactorlimitsaremaintainedprovided:a.Controlrodsinasinglegroup'movetogetherwithnoindividualrodinsertiondifferingbymorethan+18stepsfromthegroupdemandposition(allowedrodmisalignment:)forpowerlevelslessthanorequalto85XofRATEDTHERMALPOWER.Forpowerlevelsgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignmentisfromJ12to~18steps,whichisdependentontheAllowablePowerLevelandtheratioofF~limitat100XofRATEDTHERMALPOWERtomaximummeasuredF~asindicatedinFigure3.1-4.b.ControlrodgroupsaresequencedwithoverlappinggroupsasdescribedinSpecification3.1.3.5.c~ThecontrolrodinsertionlimitsofSpecifications3.1.3.4and3.1.3.5aremaintained.d.Theaxialpowerdistribution,expressedintermsofAXIALFLUXDIFFERENCE,ismaintainedwithinthelimits.TherelaxationinF~asafunctionofTHERMALPOWERallowschangesintheradialpowershapeforallpermissiblerodinsertionlimits.F~willbemaintainedwithinitslimitsasspecifiedintheCOLR,providedconditions(a)through(d)abovearemaintained.WhenanF<measurementistaken,bothexperimentalerrorandmanufacturingtolerancemustbeallowedfor.5Xistheappropriateallowanceforafullcoremaptakenwiththeincoredetectorfluxmappingsystem,and3Xistheappropriateallowanceformanufacturingtolerance.WhenF~~ismeasured,experimentalerrormustbeallowedfor,and4Xistheappropriateallowanceforafullcoremaptakenwiththeincoredetectionsystem.This4XmeasurementuncertaintyhasbeenincludedinthedesignDNBRlimitvalue.ThespecifiedlimitforF~alsocontainsanadditional4Xallowanceforuncertainties.Thetotalallowanceisbasedonthefollowingconsiderations:COOKNUCLEARPLANT-UNIT1B3/42-4AMENDMENTNO.M,IRAN, REACTIVITYCONTROLSYSTEMS3413MOVABLECONTROLASSEMBLIESGROUPHEIGHTLIMITINGCONDITIONFOROPERATION3.1.3.1Allfulllength(shutdownandcontrol)rodsshallbeOPERABLEwithallindividualindicatedrodpositionswithintheallowedrodmisalignmentoftheirgroupstepcounterdemandpositionasfollows:oforTHERMALPOWERlessthanorequalto85KofRATEDTHERMALPOWER,theallowedrodmisalignmentis+18steps,andoforTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignmentis~12stepsorasdeterminedfromFigure3.1-4.Figure3.1-4permitsforanallowedrodmisalignmentfromJ13steps(forAPLequalto101X)toJ18steps(forAPLgreaterorequalto106X)providedthevalueofR(definedinFigure3.1-4)isgreaterthanorequalto1~04.APPLICABILITY:MODES1*and2*~CTION:a.Withoneormorefulllengthrodsinoperableduetobeingimmovableasaresultofexcessivefrictionormechanicalinterferenceorknowntobeuntrippable,determinethattheSHUTDOWNMARGINrequirementofSpecification3.1.1.1issatisfiedwithin1hourandbeinHOTSTANDBYwithin6hours.b.Withmorethanonefulllengthrodinoperableormisalignedfromthegroupstepcounterdemandpositionbymorethantheallowedrodmisalignment,beinHOTSTANDBYwithin6hours.c.WithonefulllengthrodinoperableduetocausesotherthanaddressedbyACTIONa,above,ormisalignedfromitsgroupstepcounterdemandpositionbymorethantheallowedrodmisalignment,POWEROPERATIONmaycontinueprovidedthatwithinonehoureither:1.TheaffectedrodisrestoredtoOPERABLEstatuswithintheabovealignmentrequirements,or2.TheaffectedrodisdeclaredinoperableandtheSHUTDOWNMARGINrequirementofSpecification3.1.1.1issatisfied.POWEROPERATIONmaythencontinueprovidedthat:a)AreevaluationofeachaccidentanalysisofTable3.1-1isperformedwithin5days;thisreevaluationshallconfirmthatthepreviouslyanalyzedresultsoftheseaccidentsremainvalidforthedurationofoperationunderthese.conditions,and*SeeSpecialTest,Exceptions3.10.2and3.10.3COOKNUCLEARPLANT-UNIT23/41-18AMENDMENTNO.40, REACTIVITYCONTROLSYSTEMSLIMITINGCONDITIONFOROPERATIONContinuedb)TheSHUTDOWNMARGINrequirementofSpecification3.1.1.1isdeterminedatleastonceper12hours,andc)ApowerdistributionmapisobtainedfromthemovableincoredetectorsandF<(Z)andF~areverifiedtobewithintheirlimitswithin72hours,andd)EithertheTHERMALPOWERlevelisreducedtolessthanorequalto75XofRATEDTHERMALPOWERwithinonehourandwithinthenext4hoursthehighneutronfluxtripsetpointisreducedtolessthanorequalto85XofRATEDTHERMALPOWER,ore)TheremainderoftherodsinthegroupwiththeinoperablerodarealignedtowithintheallowedrodmisalignmentoftheinoperablerodwithinonehourwhilemaintainingtherodsequenceandinsertionlimitsasspecifiedintheCOLR;theTHERMALPOWERlevelshallberestrictedpursuanttoSpecification3.1.3.6duringsubsequentoperation.SURVEILLANCEREUIREMENTS4.1.3.1.1Thepositionofeachfulllengthrodshallbedeterminedtobewithinthegroupdemandlimitbyverifyingtheindividualrodpositionsatleastonceper12hoursexceptduringtimeintervalswhentheRodPositionDeviationMonitorisinoperable,thenverifythegrouppositionsatleastonceper4hours.4.1.3.1.2EachfulllengthrodnotfullyinsertedinthecoreshallbedeterminedtobeOPERABLEbymovementofatleast8stepsinanyonedirectionatleastonceper31days.4.1.3.1.3TheallowedrodmisalignmentforTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWERshallbedeterminedinconjunctionwiththemeasurementofAPLasdefinedinSpecification4.2.6.2.COOKNUCLEARPLANT-UNIT23/41-19AMENDMENTNO.40, ALLOWEDRODMISALIGNMENTABOVE85%RTPFIGURE3.1-420STEPS19161514AVVlicablewhenR>1.0413WereR=100101102103104105106107108APLCOOKNUCLEARPLANT"UNIT23/41-208AmendmentNo.

REACTIVITYCONTROLSYSTEMSPOSITIONINDICATORCHANNELSLIMITINGCONDITIONFOROPERATION3.1.3.2AllshutdownandcontrolrodpositionindicatorchannelsandthedemandpositionindicationsystemshallbeOPERABLEandcapableofdeterminingtherodpositionswithintheallowedrodmisalignmentspecifiedinSpecification3.1.3.1.APPLICABILITY:MODES1and2.ACTION'.Withamaximumofonerodpositionindicatorchannelpergroupinoperableeither:1.Determinethepositionofthenon-indicatingrod(s)indirectlybythemovableincoredetectorsatleastonceper8hoursandimmediatelyafteranymotionofthenon-indicatingrodwhichexceeds24stepsinonedirectionsincethelastdeterminationoftherod'sposition,or2.ReduceTHERMALPOWERtolessthan50KofRATEDTHERMALPOWERwithin8hours.b.Withamaximumofonedemandpositionindicatorperbankinoperableeither:I1.VerifythatallrodpositionindicatorsfortheaffectedbankareOPERABLEandthatthemostwithdrawnrodandtheleastwithdrawnrodofthebankarewithinamaximumoftheallowedrodmisalignmentofeachother,atleastonceper8hours,or2.ReduceTHERMALPOWERtolessthan50XofRATEDTHERMALPOWERwithin8hours.SURVEILLANCEREUIREMENTS4.1.3.2EachrodpositionindicatorchannelshallbedeterminedtobeOPERABLEbyverifyingthedemandpositionindicationsystemandtherodpositionindicatorchannelsagreewithintheallowedrodmisalignmentatleastonceper12hoursexceptduringtimeintervalswhentheRodPositionDeviationMonitorisinoperable,thencomparethedemandpositionindicationsystemandtherodpositionindicatorchannelsatleastonceper4hours.COOKNUCLEARPLANT-'UNIT23/41-21AMENDMENTNO.40 POWERDISTRIBUTIONLIMITSBASES3422and342.3HEATFLUXHOTCHANNELFACTORANDNUCLEARENTHALPYRISEHOTCHANNELFACTORThelimitsonheatfluxhotchannelfactor,andnuclearenthalpyrisehotchannelfactorensurethat1)thedesignlimitsonpeaklocalpowerdensityandminimumDNBRarenotexceededand2)intheeventofaLOCAthepeakfuelcladtemperaturewillnotexceedthe2200FECCSacceptancecriterialimit.EachoftheseismeasurablebutwillnormallyonlybedeterminedperiodicallyasspecifiedinSpecifications4.2.2.1,4.2.2.2,4.2.3,4.2.6.1and4.2.6.2.Thisperiodicsurveillanceissufficienttoensurethatthelimitsaremaintainedprovided:a.Controlrodsinasinglegroupmovetogetherwithnoindividualrodinsertiondifferingbymorethan~18stepsfromthegroupdemandposition(allowedrodmisalignment)forpowerlevelslessthanorequalto85XofRATEDTHERMALPOWER.Forpowerlevelsgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignmentisfromJ12to~18steps,whichisdependentontheAllowablePowerLevelandtheratioofF~limitat100XofRATEDTHERMALPOWERtomaximummeasueredF~asindicatedinFigure3.1-4.b.ControlrodgroupsaresequencedwithoverlappinggroupsasdescribedinSpecification3.1.3.6.coThecontrolrodinsertionlimitsofSpecifications3.1.3.5and3.1.3.6aremaintained.d.Theaxialpowerdistribution,expressedintermsofAXIALFLUXDIFFERENCE,ismaintainedwithinthelimits.F~willbemaintainedwithinitslimitsasspecifiedintheCOLRprovidedconditionsa.throughd.abovearemaintained.TherelaxationofF~asafunctionofTHERMALPOWERallowschangesintheradialpowershapeforallpermissiblerodinsertionlimits.TheformofthisrelaxationforDNBRlimitsisdiscussedinSection2.1.1ofthisbasis.WhenanF<measurementistaken,bothexperimentalerrorandmanufacturingtolerancemustbeallowedfor.5XistheappropriateallowanceonF<forafull,coremaptakenwiththeincoredetectorfluxmappingsystemand3Xif-theappropriateallowanceformanufacturingtolerance.COOKNUCLEARPLANT,-UNIT2B3/42-4AMENDMENTNO.8R, 8'REFERENCES1.U.S.NuclearRegulatoryCommissionLetter,A.Schwencer(NRC)toJ.Dolan(AEP),October19,1979.2."ReducedTemperatureandPressureOperationforDonaldC.CookNuclearPlant,Unit1-LicensingReport,"WCAP-11902/October1988.3."Vantage5ReloadTransitionSafetyReportforDonaldC.CookNuclearPlantUnit2",Revision2,September1990.4~5."PowerDistributionControlandLoadFollowingProcedures,"WCAP-8385,September1974."ExxonNuclearPowerDistributionControlforPressurizedWaterReactors-Phase2,"XN-NF-77-57,January1978.6."ANC-AWestinghouseAdvancedNodalComputerCode",WCAP-10965-P-A,December1985.7."QualificationofthePHOENIX-P/ANCNuclearDesignSystemforPressurizedWaterReactorCores"gWCAP11596@December1987.8."D.C.CookNuclearPlantUnit2TechnicalSpecifications-AppendixAtoLicenseNo.DPR-74."9."D.C.CookNuclearPlantUnit1TechnicalSpecifications-AppendixAtoLicenseNo.DPR-58."10."DonaldC.CookNuclear,PlantUnit2Cycle9,ReloadSafetyEvaluation",Revision1,October199366 it.

ATTACHMENT1TOAEP:NRC0692CVResponsetoRequestforAdditionalInformationRegardingGenericLetter92-08,"Thermo-Lag330-1FireBarry.ers,"pursuantto10CFR50.54(f)-DonaldC.CookNuclearPlant,Units1and2

'rT~

IsfCaAttachment1toAEP:NRC:0692CVPage1Thenumberedresponsesprovidedbelowcorrespondtotheassociatednumberedreportingrequirementinthegenericletter.Thermo-LagFireBarrierConfigurationsandAmountsB.RequiredInformation1.DescribetheThermo-Lag330-1barriersinstalledintheplanttoa0b.C~d.e.meet10CFR50.48orAppendixRto10CFRPart50,supportanexemptionfromAppendixR,achievephysicalindependenceofelectricalsystems,meetaconditionoftheplantoperatinglicense,satisfylicensingcommitments.2~ForthetotalpopulationofThermo-LagfirebarriersdescribedunderItemI.B.1,submitanapproximationof:a0Forcabletraybarriers:thetotallinearfeetandsquarefeetof1-hourbarriersandthetotallinearfeetandsquarefeetof3-hourbarriers.b.Forconduitbarriers:thetotallinearfeetof1-hourbarriersandthetotallinearfeetof3-hourbarriers.C~Forallotherfirebarriers:thetotalsquarefeetof1-hourbarriersandthetotalsquarefeetof3-hourbarriers.'d~Forallotherbarriersandradiantenergyheatshields:thetotallinearorsquarefeetof1-hourbarriersandthetotallinearorsquarefeetof3-hourbarriers,asappropriateforthebarrierconfigurationortype."

Attachment1toAEP:NRCs0692CVPage2RESPONSEThermo-Lagfirebarriersareinstalledinordertocomplywith10CFR50AppendixR,SectionIII.G.2.aandc.Severalofthese1-hourfirebarriersareinstalledtoencloseinterveningcombustibles.Thermo-Lagpanelsarealsousedintheconstructionofaradiantenergybarrierbetween10kVAisolimitertrains(nonAppendixRequipmentlocatedoutsidecontainment).AsmallamountofThermo-LagmaterialisusedonthestructuralsupportofAppendixRinstrumentationlocatedinsidecontainment.Neitheroftheseapplicationsisintendedasaratedfirebarrier.Thermo-LaginstallationsatCookNuclearPlantaretypicallyinstalledusingacombinationofpreformedpanels,conduitpreshapes,andtrowelapplications.Thermo-Lagmaterialsareusedtowrapconduit,cabletray,pullboxes,andjunctionboxes.Thermo-Lagpanelsareusedintheconstructionofonefreestandingwallandtoprotectthehotshutdownpanelsineachcontrolroom.CookNuclearPlantusesonly12-inch-widecabletrayswhicharesixinchesdeep.Insomelocations,uptofourtraysareinstalledsidebysideandenclosedtogetherwithinoneboxedenclosure.Conduitsarewrappedwithconduitpreshapesinmostcases.Insomeareas,severalconduitsareenclosedinacommonboxedenclosureusingpreformedpanels.Thermo-Lagpaneljointsandconduitpreshapejointsareprebutteredandcoveredwithanadditionallayeroftrowelgradematerial.Racewayinterferencessuchassupportsandnon-AppendixRtraysandconduitsarewrapped18inchesfromthepointofcontactwiththeraceway.DescriptionsofeachThermo-Lag330-1barrierinstalledinCookNuclearPlantanditsintendedpurposeareprovidedinAttachment2.

Attachment1toAEP:NRC:0692CVPage32.ThedataprovidedbelowisanestimationofthetotallinearfeetandsquarefeetofThermo-LagfirebarriermaterialsinstalledatCookNuclearPlantUnits1and2.Theapproximatesquarefeetofcabletrayandotherfirebarriersisbasedupontheoutsidebarrierdimensionsandincludesonlythatportionofafirebarrierthatcouldbeexposedtoafire.Forexample,foraverticalcabletraymountedagainstawall,thesideofthetrayadjacenttothewallisnotincludedintheapproximationofsquarefeetfortheassociatedfirebarrier.Cabletraybarriers:onehourbarriersare370linearfeetonehourbarriersare1850squarefeetthreehourbarriersare0linearfeetthreehourbarriersare0squarefeetb.Conduitbarriers:onehourbarriersare930linearfeetthreehourbarriersare100linearfeetC~Otherfirebarriers:onehourbarriersare120squarefeetthreehourbarriersare800squarefeetd~Otherbarriersandradiantenergyshieldss(Onenon-AppendixRradiantenergyshieldlocatedoutsideofcontainment)totalsquarefootageis75

\I\~

Attachment1toAEP:NRC:0692CVPage4"II.ImportantBarrierParametersB.ReiredInformationStatewhetherornotyouhaveobtainedandverifiedeachoftheaforementionedparametersforeachThermo-Lagbarrierinstalledintheplant.Ifnot,discusstheparametersyouhavenotobtainedorverified.RetaindetailedinformationonsiteforNRCauditwheretheaforementionedparametersareknown.2~Foranyparameterthatisnotknownorhasnotbeenverified,describehowyouwillevaluatethein-plantbarrierforacceptability.3~ToevaluateNUMARC'sapplicationguidance,anunderstandingofthetypesandextentoftheunknownparametersisneeded.Describethetypeandextentoftheunknownparametersatyourplantinthiscontext."RESPONSEThelistof24parametersofimportanceforutilities'seprovidedintherequestforadditionalinformationisanexcerptfromaJuly1993NUMARCletter.Sincethattime,PhaseItestinghasbeencompletedandotherparametersofimportanceidentified.NUMARCprovidedalistof27parametersofimportanceinaJanuary14,1994,lettertoutilities.PlannedNUMARCPhase2testingcouldidentifyfurtherparametersofimportance,ordemonstratethatsomeofthesepreliminaryparametersarenotsignificant.WhenthefinalcontentoftheNUMARCApplicationGuideisfinalizedandacceptedbytheNRC,wewilldetermineifadditionalparameteridentificationeffortsarenecessary.Wehaveconductedwalkdownsofeachinstallationtoobtainorconfirmobservablc/physicaldataanddevelopedas-builtsketcheswhereformaldrawingsdidnotexist.Thesesketchesanddrawings,togetherwithinstallationproceduresandspecifications,addressamajorityofthe24barrierparameterslistedinpartII.A.foreachinstallation.

Attachment1toAEP:NRC:0692CVPage5ThefollowingparametershaveeithernotbeenobtainedorhavenotbeenverifiedforsomeinstallationssParameterI8AirdropsSomeparametersinternaltothefirebarriersystemhavenotbeenverifiedinallcases.Forexample,airdropdesignsareestablishedbyourdesignstandards.However,ithasnotyetbeenverifiedthatcabletraytoconduitjunctionswereinstalledtothesestandards.ParameterI9BaselinefirebarrierpanelthicknessPanelthicknesshasnotbeenverifiedforeveryinstallation.Acheckofmaterialinstockandalimitedcheckofsomeinstalledpanelsfoundthicknesstobe0.625inches.Parameterf18ButtjointsorscoredandgroovedjointsTheinstallationprocedureallowedfortheuseofbuttjointsorscoredjointsforcabletrayenclosures.However,discussionswiththesupervisorinchargeoftheThermo-LaginstallationsrevealedthatvirtuallyallboxedenclosuresusingThermo-Lagpanelswereinstalledusingprebutteredbuttjointsduetolimitedworkingspaces.Walkdownshaveconfirmedthisinstallationtechniquewherethejointwasvisible.2~Parametersofimportancethatarenotpresentlyknownorverifiedwillbeevaluatedusingoneormoreofthefollowingoptions:assumelimitingconditions,e.g.,pre-butteredbuttjointsversusscoreandfoldjoints,b.reviewsofcontractorworkpracticesandproceduresthroughdocumentationortestimony, Ily Attachment1toAEPsNRC:0692CVPage6c~reviewofreceiptinspectionandinstallationdocumentation,d.destructiveexaminationofbarriersonasamplebasistoobtaininformationonconstructiontechniquesormaterialthickness,ore.visualobservationswhereappropriate.Yourletteralsoprovidesaneightitemlistingofparametersofimportanceconcerningcableprotectedbyfirebarriers.Itisnotclearthatconsiderationoftheseparameterswouldbenecessaryformostbarriers;therefore,significanteffortstoobtainthelistedparameters,ordescribehowbarrierswillbeevaluatedinabsenceoftheseparameters,maybeun)ustified.Totheextentthatfiretestresultsaresatisfactoryonthebasisoftemperature,asprovidedforinthedrafttestandacceptancecriteria,webelieveresearching,atthistime,fortheNRClistingofcableperformanceparameterstobeevaluatedshouldbelimitedtothepercentagecablefillincabletrays(subsetofitem4oftheNRC8itemlisting),whichrelatestoenclosedthermalmassandbarrierperformance.Considerationoftheremaininglistedcableparameters(items1,2,3,5,6,7and8)willbedeferreduntilthescopeofcablefunctionalityverificationbecomesclear.WebelievethisinterpretationofthereportingrequirementsofyourletterisconsistentwiththeguidanceprovidedbytheNRCviaourtelephoneconversationwithNRRStaffonJanuary12,1994,onthistopic.Iffiretestsdemonstratetemperaturecriteriaexceedances,oneoptionalapproachtoresolution,asprovidedintheNRCdrafttestandacceptancecriteria,wouldbetoevaluatecablefunctionalityattheelevatedtemperatures.Inthiscase,determinationofcableperformanceatelevatedtemperature(item8)wouldbenecessary,usingcableperformancetestdataorinformationforspecificinstalledcabletypes(items1,2,3gand7oftheNRClisting).However,NRChasyettofinalizerequirementsforcable LLII~I' Attachment1toAEP:NRC:0692CVPage7functionalityevaluation,noraretestresultsyetavailablethatwouldclearlyindicatethescopeofsuchevaluations.ThedegreeandconservatismofcablefunctionalityevaluationrequirementsimpliedbytheNRClistingofcableparameters,anddiscussedinproposedSupplement1toGeneric'etter86-10,significantlyexceedtheoriginalrequirementsofGenericLetter86-10.Ztems4,5,and6oftheNRClistingaddressissuesrelativetopotentialcable/barriercontactforcabletrays.Thisisanunresolvedindustryissueatthistime,andbarrierinspectioninthisregardwouldbedifficultorimpossible.Barriercontactwouldbemostlikelytooccurinsituationsoflargecablefills.However,thelargecablefillsalsoprovidesignificantthermalmassthatcouldimprovebarriersystemperformanceandmitigatetheeffectofcablesincontactwiththebarrier.NUMARChasagreedtoprovideadditionalthermocouples,belowthecabletrayrungsinthePhase2cabletrayteststoprovideinformationtoaddressNRCconcernsrelativetopotentialcontactofcableswiththecoldsideofthefirebarriers.Further,notethatasmallpieceofSealtempcloth(NRCitem6)wasusedonlyinNUMARCtestNumber1-4(24"steelcabletraywithairdrop,,threehourtest),anddidnotimpactperformance'ruseabilityofthetest.Potentialcable/barriercontactisnotexpectedforCookNuclearPlantcabletraysduetothetypeoftrayused.Thesetrayshaveacontinuousexpandedmetalbottomwhichwouldpreventanycablesagging.Nosignificantsaggingofthe'topportionofthefirebarrierislikelysincetraysareonlytwelveincheswide.3.Seeresponseto1and2above.

I~r IrW~IAttachment1toAEP:NRC:0692CVPage8"III.Thermo-LaFireBarriersOutsidetheScoeoftheNUMARCProcrramB.RequiredInformationDescribethe,barriersdiscussedunderItemI.B.1thatyouhavedeterminedwillnotbeboundedbytheNUMARCtestprogram.2~Describetheplant-specificcorrectiveactionprogramorplanyouexpecttousetoevaluatethefirebarrierconfigurationsparticulartotheplant.ThisdescriptionshouldincludeadiscussionoftheevaluationsandtestsbeingconsideredtoresolvethefirebarrierissuesidentifiedinGL92-08andtodemonstratetheadequacyofexistingin-plantbarriers.3.Ifaplant-specificfireendurancetestprogramisanticipated,describethefollowing:a~Anticipatedtestspecimens.b.Testmethodologyandacceptancecriteriaincludingcablefunctionality."RESPONSESeveralThermo-LagconfigurationsexistatCookNuclearPlantwhicharedifferentfromthosecurrentlyincludedinthescopeoftheNUMARCtestprogram.SomeadditionalbarriersmayfalloutsideoftheexpandedNUMARCtestprogramdependingupontheconfigurationstestedandthefinalcontentoftheApplicationGuideline.ConfigurationscurrentlybelievedtobeoutsidetheNUMARCprogramcanbedividedintocableracewaybarriersandnoncableracewaybarriers.Thefollowingprovidesadescriptionofeachofthesebarriers.CableRacewaBarriersaeInsomecases,twoormore12inchwidecabletrayswereinstalledsidebysideatCookNuclearPlantratherthanusinga24inchor36inchwidetray,asusedintheNUMARCtestingconfigurations.Inseveralcases,four12inchwidetrays Attachment1toAEP!NRC:0692CVPage9wereinstalledinthismannerandprotectedwitha48inchwideboxedenclosureconstructedofThermo-Lag,panels.b.Severalirregularlyshapedboxed'enclosureswereinstalledatCookNuclearPlantasfirebarriersforcabletrayjunctions.Fortheseconfigurations,ametalpanwasfabricatedinthefieldtoaccommodatethe)unctionofseveralcabletrays.Thesepanswerefabricatedinvarioussizessuchas5feetby2feetand3.5feetby3.5feet.TheThermo-LagenclosuresprotectingthesepanswereconstructedusingtechniquessimilartothoseusedforcabletrayswiththeexceptionthatboltswereusedtoconnectthebottomThermo-Lagpanelstothepanstoprovidesupportforthepanels.C~Thermo-Lagpanelswereusedtoconstructthree-hourfirebarriersaroundseveralpilastersinthedieselgeneratorrooms(FireZones15and19).Thepilastersareofconcreteconstructionandarephysicallyapartofthedieselgeneratorroomwalls.Eachpilastercontainsseveralconduitswhichhavebeenembeddedbelowapproximatelytwoinchesofconcrete.TwolayersofapproximatelyonehalfinchthickThermo-Lagpanelswereattachedtotheoutsideofeachpilaster.~NonCableRacewaBarriersd0Awallconstructedtoseparate(i.e.,provideafirebarrierbetween)thecomponentcoolingwater(CCW)pumpsconsistsoftwo1/2inchthickThermo-lagpanelsseparatedbya1/4inchthickexpandedmetalstiffener.Thewallisapproximately36feetlongand78incheshigh.TheThermo-Lagpanelswereoverlappedtoprovideprotectionfortheboltsattachingthepanelstothemetalstuds.

~)0 Attachment1toAEP:NRC:0692CVPage10e.Thehotshutdown(HSD)panelswereoriginallyi.nstalledtocomplywiththerequirementsof10CFR50,AppendixAGeneralDesi.gnCri.terion19,andareusedtoprovideshutdowncapabilityfromoutsidethecontrolroomfordesignbasisconsiderationsotherthanAppendixRfires.TheUnit1HSDpanelisintheUnit2controlroomandtheUnit2HSDpanelisintheUnit1controlroom.TheHSDpanelsaresteelenclosuresapproximately12feet6incheswide,5feetdeepand8feethigh.A3-hourfirebarrierwasconstructedaroundtheHSDpanelstoensurethatfiresexternaltothepanelsdonotdamageinternalwiringandfiresinternaltothepaneldonotspreadoutside.ThewallswereconstructedofconcreteblockandsteelcolumnswithaThermo-Lagtrowelgradecoatingonthesteelmembers.TheroofwasconstructedinamannersimilartotheCCWpumproomwallinthattwoapproximately1/2i.nchthickThermo-Lagpanels,separatedandstiffenedbyexpandedmetal,weremountedonsteelbeamsanchoredtothetopoftheblockwall.Accesstoeachpanelisviaasteelroll-upfiredooracrossthefrontofthepanel.Asupplementalresponse,whichidentifiescableracewaybarriersoutsidetheNUMARCprogramscope,willbeprovidedtotheNRC.ThisresponsewilltakeintoconsiderationtheresultsofNUMARC'sexpandedgenerictestprogramifundertaken.NUMARCisalsoinitiatingactionstofacilitatesharedtestingofinstallationsthatcannotbepracticallyconsideredunderthegenericprogramscopebutmaybecommontoseveralfacilities.Ztisexpectedthatamatrixofsharedtestscouldbedevelopedandprovidedtotheindustry.NUMARCisscheduledtoprovideadditionalinformationtoutilitiesinthisregardbyApril1,1994.Therefore,asupplementalresponsewillalsobeprovidedfornoncableracewaybarrierswhichwilltakeintoconsiderationthepotentialforfutureplantspecificorsharedtesting.

Attachment1toAEP:NRC:0692CVPage11ThesupplementalresponsetoItemZZI.B.1willbeprovidedtotheNRCwithin60daysfollowingreceiptoftheNUMARCApplicationGuideline.263.Theplant-specificplantobeusedforevaluationoftheaboveconfigurationshasnotbeenestablishedatthistime.ThisplanwillbelargelydependentonwhetherornotthescopeoftheNUMARCtestprogramwillbeexpandedtocoversomeoralloftheaboveconfigurations.NUMARChasstatedthatadditionalinformationwillbeprovidedtoutilitiesinthisregardbyApril1,1994,andtheApplicationGuidelinewillbefinalbymid-April1994.OurresponsetoItemsZZI.B.2andZII.B.3willbeprovidedtotheNRCwithin60daysfollowingreceiptoftheApplicationGuideline.Thiswillallowtimetoassessthefinalgenericprogramscope,andthepotentialforsharedtesting,bothofwhichcouldreduceoreliminatetheneedforplantspecificcorrectiveactions,particularlyfiretesting."IV.AmacitDeratinB.RecpxiredInformationForthebarriersdescribedunderItemI.B.1,describethosethatyouhavedeterminedwillfallwithinthescopeoftheNUMARCprogramforampacityderating,thosethatwillnotbeboundedbytheNUMARCprogram,andthoseforwhichampacityderatingdoesnotapply.2.ForthebarriersyouhavedeterminedfallwithinthescopeoftheNUMARCprogram,describewhatadditionaltestingorevaluationyouwillneedtoperformtoderivevalidampacityderatingfactors.3.ForthebarrierconfigurationsthatyouhavedeterminedwillnotbeboundedbytheNUMARCtestprogram,describeyourplanforevaluatingwhetherornottheampacityderatingtestsrelieduponfortheampacityderatingfactorsusedforthoseelectricalcomponentsprotectedbyThermo-Lag330-1(forprotectingthesafe-shutdowncapabilityfromfireortoachievephysicalindependenceof Attachment1toAEP:NRC:0692CVPage12electricalsystems)arecorrectandapplicabletotheplantdesign.Describeallcorrectiveactionsneededandsubmitthescheduleforcompletingsuchactions.4.IntheeventthattheNUMARCfirebarrier'estsindicatetheneedtoupgradeexistingin-plantbarriersortoreplaceexistingThermo-Lagbarrierswithanotherfirebarriersystem,describethealternativeactionsyouwilltake(andthescheduleforperformingthoseactions)toconfirmthattheampacityderatingfactorswerederivedbyvalidtestsandareapplicabletothemodifiedplantdesign."RESPONSEIntheearly1980's,weexpandedourampacityderatingprogramtoconsiderThermo-LaginstallationsatCookNuclearPlant.Thisprogramwasappliedtoallwrappedcableracewayscontainingpowercables.AcomputermodelwasdevelopedbasedonAmericanInstituteofElectricalEngineers(AIEE)transactionpaper57-660,byNeher,McGrath,andBullertocalculatethetemperatureriseintheconductor,heatgenerationperfoot'ofraceway,andampacity.Themodelconsidersthatallcablesintheracewaywereenergizedwiththemaximumsteadystatecurrent.Atestprogramwasdevelopedtovalidatethecomputermodel.Aseriesoftestrunssimulatingrepresentativeas-builttrayandconduit,configurationswereconductedatourCantonTestLab.Theresultsofthetestsvalidatedtheanalyticalcomputermodel.Thetestingwasconductedunderrigidlaboratorycontrols,withtestprocedures,andwithengineeringsupervisionandreview,however,itwasnotundertheauspicesofa10CFR50AppendixBqualityassuranceprogram.

Attachment1toAEP:NRC:0692CVPage13ThecalculationsusingthiscomputermodelconfirmedthatthecableracewaydesignatCookNuclearPlantincludedsufficientmargintoaccommodatethetemperatureriseresultingfromwrappingracewayswithThermo-Lag.WedonotbelievethatanyadditionaltestingorevaluationisnecessarytoderivevalidampacityderatingfactorsforthesecableracewaysinstalledatCookNuclearPlant.WewillreviewtheNUMARCprogramforampacityderatingwhenitismadeavailable.Intheeventthatfirebarriertestsindicatetheneedtoupgradeexistingin-plantbarriersortoreplaceexistingThermo-Lagbarrierswithanotherfirebarriersystem,wewillmakeadeterminationastowhethertouseNUMARC'sampacityderatingprogramorourownprogram.WewillinformtheNRCoftheampacityprogramtobeusedforfirebarrierupgradesorreplacementswithin90daysfollowingreceiptoftheNUMARCAmpacityTestReport.~IgAlternativesB.RequiredInformationDescribethespecificalternativesavailabletoyouforachievingcompliancewithNRCfireprotectionrequirementsinplantareasthatcontainThermo-Lagfirebarriers.ExamplesofpossiblealternativestoThermo-Lagbasedupgradesincludethefollowing.Upgradeexistingin-plantbarriersusingothermaterials.2~ReplaceThermo-Lagbarrierswithotherfirebarriermaterialsorsystems.3~Reroutecablesorrelocateotherprotectedcomponents.4,Qualify3-hourbarriersas1-hourbarriersandinstalldetectionandsuppressionsystemstosatisfyNRCfireprotectionequipment."

llll+~lc0 Attachment1toAEP:NRC:0692CVPage14RESPONSETheselectionofspecificalternativesavailableforachievingcompliancewithNRCfireprotectionrequirementsinplantareasthatcontainThermo-Lagfirebarrierswilldependonanumberoffactors.ThreecurrentlyundefinedfactorsmustbeconsideredindeterminingwhetherupgradesusingadditionalThermo-Lagmaterialsarepractical,andwhatalternativeswouldbemostappropriateincaseThermo-Lagupgradescannotbedeveloped.TestandacceptancecriteriahavenotbeenfinalizedandissuedbyNRC.Proposeddraftcriteriacontainnewconservatisminfiretestmethodsandacceptancecriteriathatcouldaffectthescopeandcomplexityofupgradestoinstalledbarriers.Thecontentofthefinalcriteria,andtheresultingimpactonutility-specificactionplans,isuncertain.2.CompletePhase2testsresultswillnotbeknownuntilthemid-Marchtimeframe.Resultsofbaseline(asinstalled)andupgradedtestconfigurationsfromPhase2mustbeconsideredtodetermineappropriateutilityactionplanstoaddressspecificconfigurations.Moreover,furthergenerictestingmaybeundertakenfollowingPhase2,asnotedpreviously.3.TheNUMARCApplicationGuideline,tobefinalizedbymid-April,willincludeamatrixofimportantperformanceparametersandboundingconditions.DiscussionwithNRCwillbenecessarytoreachagreementontheselectionofcomparisonparametersandboundingconditions.TheresultsoftheseNRCinteractionswilldefinethefinalcontentandwoulddirectlyimpactthegenericapplicabilityofagiventesttoaninstalledconfiguration.

Attachment1toAEP:NRC:0692CVPage15Yourletterprovidesonlyapartiallistingofresolutionalternatives.Threeadditionalalternativesareprovidedbelow.Otherresolutionalternativesmaybepossible.Further,"itshouldbenotedthatimplementationofalternativesolutionsmaybeconsideredevenifupgradeshavebeensuccessfullytested.Potentialalternativesincludethefollowing.1~Re-evaluationofengineeringanalysesusedfordeterminationofAppendixRsafeshutdownpathways,equipment,andactions,couldprovideabasisforreductioninthescopeofprotectedcircuitsandtheirassociatedfirebarriers.2~Exemptionrequestscouldbesubmittedbasedupontheuseoffiremodelingincon)unctionwithbaseline(non-upgraded)testresultstodemonstrateadequateprotectionfortheinstalledhazard.Inconjunctionwiththeabove,probabilisticsafetyanalysis(PSA)couldbeusedasanexemptionbasis,bydemonstratinginsignificantcoredamagefrequencyimpacts,assumingbarrierinoperability.3.Re-evaluationoflicensingcommitmentsthatmayexceedtherequirementsofpertinentregulationsmaybeundertaken.Duringourreviewofthisissue,wenotedthatseveralconduitsandcabletrayswhichwerewrappedwithThermo-Lagmaterialsnolongerrequireprotectionfromfire.Thisconclusionwasmadepossiblebyacombinationofdesignchangesandtheremovalofseveralcomponentsfromthelistofsafeshutdownequipment.Theneedtoretainexistingfirebarrierinstallationswillcontinuetobeevaluatedasapartofourongoingefforttorevalidateourcurrentsafeshutdownanalysis.

Attachment1toAEP:NRC:0692CVPage16"VI.SchedulesB.RequiredInformationSubmitanintegratedschedulethataddressestheoverallcorrectiveactionschedulefortheplant.Ataminimum,thescheduleshouldaddressthefollowingaspectsfortheplant:implementationandcompletionofcorrectiveactionsandfirebarrierupgradesforfirebarrierconfigurationswithinthescopeoftheNUMARCprogram,2~implementationandcompletionofplant-specificanalyses,testing,oralternativeactionsforfirebarriersoutsidethescopeoftheNUMARCprogram."RESPONSEBecauseoftheuncertaintiesnotedintheabovediscussionofNRCItemsIIIandVabove,submittalofanintegratedschedulethataddressestheoverallcorrectiveactionprogramfortheplantisnotpossibleatthistime.WhilethescopeoftheNUMARCtestprogramforPhase1and2isknown,whatwillultimatelybe"bounded"isafunctionoftheoutcomeofthetests,andthefinalcontentoftheApplicationsGuide.Inaddition,NUMARCisconsideringanexpansionoftheplannedtestprogramscope.ConsiderableinformationconcerningtheresultsofcurrentlyplannedNUMARCtests,expansionoftheNUMARCtestprogram,andthecontentoftheApplicationsGuidewillbecomeavailableinApril.ThisinformationwilldirectlyimpacttheoverallcorrectiveactionscheduleforCookNuclearPlant.WewillprovidetherequiredscheduleinformationtotheNRCwithin60daysfollowingreceiptoftheApplicationGuideline."VII.SourcesandCorrectnessofInformationDescribethesourcesoftheinformationprovidedinresponsetothisrequestforinformation(forexample,fromplantdrawings,qualityassurancedocumentation,walkdownsorinspections)andhowtheaccuracyandvalidityoftheinformationwasverified."

Attachment1toAEP:NRC:0692CVPage17RESPONSENumerousdifferentsourceswereemployedtoprovidetheresponsetothisrequestforinformation.Ama)orityoftheinformationconcerningfirebarrierdescriptionsandparameterswascontainedinThermo-Laginstallationpioceduresandspecificationsandverifiedthroughfieldwalkdowns.OthersourcesofinformationthatwereconsultedincludequalityassurancedocumentationcontainedindesignchangepackagesunderwhichtheThermo-Lagfirebarrierswereinstalled,designdrawingsofspecificfirebarriers,anddiscussionswithcontractorpersonnelresponsibleforThermo-Laginstallation.Ourampacitytestingwasconductedunderrigidlaboratorycontrolsgwithtestprocedures,andwithengineeringsupervisionandreview;however,itwasnotundertheauspicesofa10CFR50AppendixBqualityassuranceprogram.

IIIig00, ATTACHMENT2TOAEP:NRC:0692CVResponsetoRequestforAdditionalInformationRegardingGenericLetter92-08,"Thermo-Lag330-1FireBarriers,"pursuantto10CFR50.54(f)-DonaldC.CookNuclearPlant,Units1and2DescriptionsofThermo-Lag330-1BarriersInstalledinCookNuclearPlant AEP:NRC:0692CVAttachment4Pagelof~BarrierNo.~~FireRatingEnclosedracewayConduit{C)/Tray{T)Size{inches)Barrierlength(ft)23DescriptionArea(sq.ft)-c"PiPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixR~DiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.Enclosedracewayco-(FireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)/0Area(sq.ft)A'8DescriptionAZMIc'c=Z)/75EZWdPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelow AEP:NRC:0692CVAttachmentf2Page?of~3BarrierNo.~~EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)Area(sq.ft)DescriptionPRC7-AB/Wrw2OPurposePhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixR~DiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.EnclosedracewayB-/FireRatingConduit(C)/Tray(T)Size(inches)t'z~z~zQ2~YBarrierlength(ft)DescriptionRu7--C'c.Area(sq.ft)S'~o~oj=aWCfgMoBUDZoPurposePhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixR~DiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachment4Pageof~BarrierNo.EnclosedracewayoxP-ZR"FireRaCingConduit(C)/Tray(T)/aRSize(inches)t~ZwZMgBarrierlength(ft)DescriptionCc,cKcMCCCSLYArea(sq.ft)W/MBTD~r/oP~c'ffSec'QPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixR~DiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.EnclosedracewayPut.cBo7-ZRP82FireRatingConduit(C)/Tray(T)/RSize(inches)Bb&-SCZQ4.zBarrierlength(ft)DescriptionC.Area(sq.ft)EnJcccosczdsFOPz-ZP8-9Purpose~Physicalindep'endenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixR~DiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns

AEP:NRC:0692CVAttachment42PageWof38BarrierNo.EnclosedracewayFireRating/A'8Conduit(C)/Tray(T)Size(inches)Area(sq.ft)DescriptionPwCI=A821CA.IEDwcRDiCSw~rIzM3D=Cc~Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixR~DiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.EnclosedracewayFireRatingConduit(C)/Tray(T)f-lg+Size(inches)Barrierlength(ft)Descriptionp3Area(sq.ft)=FR-(cAML=zoC'u'IgacPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixR~DiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaaeduponfieldwalkdowns AEP:NRC:0692CVAttachment4~Page~of~~BarrierNo.~~Enclosedraceway7Z-/FireRatingConduit(C)/Tray(T)Size(inches)C./Barrierlength(ft)Description3cr'A3C/0Area(sq.ft)~Z%Awe<Zoreomgoa'/r8~e9Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.28EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)'escriptionC'onrc/ZArea(sq.ft)Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelow4Note:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns

AEP:NRC:0692CVAttachment0P-Page4ofD8BarrierNo.EnclosedracewayMC<FireRatingI-//8Conduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionCuuArea(sq.ft)7/cWPurposeX'hysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.Enclosedraceway8PSR.FireRating/-4RConduit(C)/Tray(T)Size(inches)C.Barrierlength(ft)DescriptionCnJJDArea(sq.ft)/7BR~AAH~~PurposeXPhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaaeduponfieldwalkdowns AEP:NRC:0692CVAttachment0RPage~of~BBarrierNo.~~FireRating/-Wi8Enclosedraceway8-rv+a-~Conduit{C)/Tray(T)Size(inches)Barrierlength{ft)Description~4MrOA/iArea(sq.ft)~~WAj~w~Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.PireRatingEnclosedracewayae-c'9Barrierlength(ft)Conduit{C)/Tray{T)7Area(sq.ft)Size(inches)IZrZ~Z~Z.reDescriptionTwasvgYZC-g-C/+Z~/PIZ'~7~+c-ls(D-c.-L.AOA3RDPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns

~.Jt AEP:NRC-0692CVAttachment42PagePof~BarrierNo.EnclosedracewayGeozB-Z,FireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)7Ccovn).Area(eg.ft)8'>3)Description~ST.94EZ/0IPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.Enclosedraceway8'do~Z->FireRating(Conduit(C)/Tray(T)CSize(inches)Barrierlength(ft)DescriptionArea(sq.ft)hf~Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttach<gent4Page"fof~~~BarrierNo.SA'nclosedracewaysocoG-zEood5-ZSZ&adI-2&oPeaFireRatingConduit(C)/Tray(T)CCCSize(inches)Barrierlength(ft)/SArea(sq.ft)A/ADescriptionV~Ie/vsLw&MDw&zowL)~-eea&cNa~i=PurposeYPhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.5BEnclosedraceway8G-FireRatingConduit(C)/Tray(T)CSize(inches)Barrierlength(ft)/'6DescriptionCeveVM~/CA/~i/.r+H~t=//S/C'KArea(sq.ft)GZ)oC'cmic~~8DLap/~Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns JJ AEP:NRC:0692CVAttachment4Page~Oof~8BarrierNo.~~EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)O'-GPAzea(sq.ft)Description~i~zuI<>+<>~>+~u<>+>><44<<~n/v+tcAtL~M~TZ<1Lt/C~-/7P"are'g7SZd<S.Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowrrierNo.EnclosracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRsafetdownsystemsEnclosureofinterveningcombustiblesforApdixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachmentf2Page~(of~~~BarrierNo.d4FireRating/&'REnclosedracewayConduit(C)/Tray(T)Size(inches)/2Barrierlength(ft)Area(sg.ft)sO4//Descriptionrh'Z-d2sA.]2VER'rIcal7eav>zggAvgsAJCVALLc=.D4ikz-co4-PPi27RAY5UC48CLW5QPc=Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowrrierNo.EnclodracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sg.ft)PurposePhysicalindependenceofAppendixRsafhutdownsystemsEnclosureofinterveningcombustiblesforendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:,Dimensionsprovidedareestimatesbaseduponfieldwalkdowns

'lJ AEP:NRC-0692CVAttachment4~Page~2ofARBarrierNo.7A'~FireRating/0REnclosedracewayConduit(C)/Tray(T)Size(inches)Barrierlength(ft)//.3DescriptionCausa'zv~~HAArea(sq.ft)A'rfPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.EnclosedracewayConduit(C)/Tray(T)Size(inches)FireRating/NNBarrierlength(ft)DescriptionArea(sq.ft)WAPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussed'nAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns JI9IAEP:NRC:0692CVAttachment02.Page~of~BarrierNo.FireRatingEnclosedraceway,Conduit(C)/Tray(T)Size(inches)3C7-ro'IDescriptioncoloi,LSArea(sq.ft)7aZPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowrrierNo.EncloracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRsafehutdownsystemsEnclosureofinterveningcombustiblesforAendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachment4~Page~ofZRBarrierNo.8'A~~FireRatingf'b8EnclosedracewayConduit(C)/Tray(T)Size(inches)Barrierlength{ft)rGDescription5c'caHoArea{sq.ft)sz-PAdezsPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.FireRatingEnclosedracewayConduit(C)/Tray(T)Size(inches)'7GH-/)~<5Description~~isE<3eDcIc57etP.cuArea(sq.ft)IfoA3iZ/7cMSPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns

AEP:NRC:0692CVAttachment0+Page/of~BarrierNo.P~~~FireRatingD4R'nclosedracewayConduit(C)/Tray(T)Size(inches)Barrierlength(ft)Descriptionuu/L857Area(sq.ft)C-.WZCDD&0A/D~WQHC~UClPGFLAs7Co&-~r~~~c~Vw~Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequest,Otherreason,describedbelowBarrierNo.FireRatingDff'NEnclosedraceway8~o2'-IQ~o(ooZR-(.8'3'E-1o6-(Pease,-rConduit(C)/Tray(T)C'C.Size(inches)Barrierlength(ft)Descriptionuniv-ssPLISPv'MNmPA3=zNArea(sq.ft)mCoc=VL,n%cooPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns I

I1IAEP:NRC:0692CVAttachment4P-page/&of~BarrierNo.EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)Area(sq.ft)DescriptionARMTc.ZO<ice+C,CSMPurposePhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixR~DiscussedinAppendixRexemptionrequest.Otherreason,describedbelowrierNo.EnclosracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)PurposephysicalindependenceofAppendixRsafehutdownsystemsEnclosureofinterveningcombustiblesforendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachment4P-Page~lofZ~BarrierNo.'04EnclosedracewayFireRatingConduit.(C)/Tray(T)Size(inches)Barrierlength(ft)Area(sq.ft)P.g844ll'(ZDAURL5)DescriptionEnJCz05~ILLSC/CzASISr5HC'owe'RcWZ'LYv"sPv'h'4'<&'PAGc.P~6MAC.SF/FPEhfc=R~PurposePhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowrrierNo.EncloracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRsafeutdownsystemsEnclosureofinterveningcombustiblesforAendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdovns AEP:NRC:0692CVAttachmentf~Page~ofBS'arrierNo.//AEnclosedracewayPsoR-(FireRating/H'RConduit(C)/Tray(T)Size(inches)CC.0Barrierlength(ft)Descriptiondca&uj7-8FtlLc.urH'cMIPpeMrs//APEWHgPhM.Purpose)CPhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequest,Otherreason,describedbelowBarrierNo.Enclosedraceway7P-FireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)PArea(sq.ft)DescriptionCoarct27"MWA%PcZO~rvg~~$/ggP~,ITPMKPAcCPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachmentf2Page/'/of3~BarrierNo.//MFireRating/ACEnclosedraceway&55G-2'PclCLConduit(C)/Tray(T)Size(inches)/eABarrierlength(ft)Area(sq.ft)DescriptionbFchlDCC/7R/7P'P'/'/hPurposeXPhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowrrierNo.EncloracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRsafestdownsystemsEnclosureofinterveningcombustiblesforAppdixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachment.4P-Page2>of~BarrierNo.EnclosedracewayQBZ-CVOFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)~Description/AWIZoMr4cArea(sq.ft)o>ca=.2o&JC<o>~I~a=PurposePhysicalindependenceofAppendixRsafeshutdownsystems~EnclosureofinterveningcombustiblesfoxAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowrierNo.FireRatingEnclosracewayConduit(C)/Tray(T)Size(inches).Barrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRsafeutdownsystemsEnclosureofinterveningcombustiblesforApndixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelow.Note:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachment02Page~Zof~BBarrierNo.~34~~FireRating1H0EnclosedracewayConduit(C)/Tray(T)Size(inches)~A/Barrierlength(ft)DescriptionArea(sq.ft)l~EA)CC.OS@k,c=-AS/43'urposePhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBaierNo.EncloseacewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRsafeutdownsystemsEnclosureofinterveningcombustiblesforAendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns

)

AEP:NRC:0692CVAttachment42Page82of~~BarrierNo.I9AEnclosedracewayS-79Q-ZFireRatingIConduit{C)/Tzay(T)Size{inches)Barrierlength(ft)Area(sg.ft)DescriptionCo4bgr7Pdcs/APE5o'sc=DPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.Enclosedraceway87PCR"2.FireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)aOArea(sg.ft)DescriptionC'ounir7z~wdwPmPurposeXPhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachment02PageP9of~BarrierNo.~~IICFireRating/A'C.Enclosedraceway0IBQ8-ZConduit{C)/Tray{T)Size{inches)l/z.Barrierlength(ft)SDDescriptionCo&Zou'trArea(sq.ft)fMFE5'SMPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.Enclosedraceway1g~l8Conduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:DimensionsprovidedareestimatesbaseduponfieldMalkdowns 1I AEP:NRC:0692CVAttachment42Page2'fof~BarrierNo.~~Enclosedraceway4ww~Conduit(C)/Tray(T)Size(inches)Barrierlength(ft)S,~Area(sq.ft)IIDescriptionF44'/<2<<aeHOEACHoSuREsrtZPurposePhy'sicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixxemptionrequest-Otherreason,describedbelowBarrierNo.IEnclosedracewayConduit(C)/Tray(T)Size(inches)FireRating/HHBarrierlength(ft)DescriptionArea(sq.ft)Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns~~

IIIJ IIAEP:NRC:0692CVAttachment42Page85of~BarrierNo./5A~~FireRatingI-HREnclosedracewayPAZ-C59-r4S-CIQ2g-c<s2+Z-deerz-Conduit(C)/Tray(T)Size(inches)/2/WBarrierlength{ft)DescriptionMD7<8Y5C'cMWNIocr44cYTM7DAIAAKC'tnCSedit.st=IoA3VCRadccRe5V'APurposeYPhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrecpxestOtherreason,describedbelowBarrierNo.Enclosedracewayig~aConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)/PCOSa8573'~PL~Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureof.interveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns 4~~'iAEP:NRC:0692CVAttachment42Page2bofB~.~kA~~FireRatingl~4Enclosedracewayrt'2-PConduit(C)/Tray(T)Size(inches)IZBarrierlength(ft)DescriptionArea(sq.ft)Ei~rL=rn/PurposePhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.FireRatingEnclosedracewayConduit(C)/Tray(T)Size(inches)Barrierlength(ft)A3DescriptionaHIzen~cr<A;ScrSc-as'rD-0C.L-Lr5r~CPurposePhysicalindependenceofAppendixRsafeshutdownsystems~EnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns IJ AEP:NRC:0692CVAttachment02.Page~2.of~BarrierNo.l7~FireRatingllk~Enclosedraceway280'tR-ZConduit(C)/Tray(T)Size(inches)Barrierlength(ft)Area(sq.ft)DescriptionConcuIIPREsHhl'BQPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowrrierNo.FireRatingEnclodracewayConduit(C)/Tray(T)Size(inches)Barrierlength(ft)Area(sq.ft)DescriptionPurposephysicalindependenceofAppendixRsafeutdownsystemsEnclosureofinterveningcombustiblesforAendixRDiscussedin'AppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns I~

AEP:NRC:0692CVAttachment42Page28of~~~BarrierNo./~4EnclosedracewayP-FireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)7+DescriptionCow&QIcArea(sq.ft)/MPewus~Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.Enclosedraceway7BRQ.B9/EP4-2FireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)A'4Area(sq.ft)Descriptionwh/C'CQSccLO54RRso~o0a.SeZvIoUPCoW/7Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC:0692CVAttachment0P-Page29of~BarrierNo.~~EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)uLBarrierlength(ft)AfhArea(sq.ft)DescriptionZ4<<~En/Ccosud~usr<5~srPurposeXPhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo./8~EnclosedracewayFireRating///WConduit(C)/Tray(T)Size(inches)Barrierlength(ft)Description4+2-Cs8-7AWYEPrlCArea(sq.ft)Pu&SSr2)~gSrbEmls&Qo~-APNEA5Co4ke-LdAZLiBANAASPurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns CJc~1 AEP:NRC-0692CVAttachment42Page~Oof~BarrierNo.~~FireRating/EnclosedracewayA-C'onduit(C)/Tray(T)jSize(inches)/EIZBarrierlength(ft)Area(sq.ft)DescriptionK~wv2+emnuess<y~RAY5VtCL~A351COOl.izTASinStoaLc)I'TttopBJC)b-(9O'o~PBP~7eAY'+X-~2fRcth)5too&APRR~AYS-~VECf&s-mi(w~z.houaa5.Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowarrierNo.FireRatingEnclodracewayConduit(C)/Tray(T)Size(inches)~oBarrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRsashutdownsystemsEnclosureofinterveningcombustiblesforendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns~~

I~II%~a0AEP:NRC:0692CVAttachment02Page~of~BarrierNo.~~Enclosedraceway2Hz-CC3FireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)Description%A-aA-R.L4oiA-Cai>>=8slD-8DPici~f6%sC5.-PurposePhysicalindependenceofAppendixRsafeshutdownsystems~EnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.EnclosedracewayFireRatingConduit(C)/Tray(T)ll+(cSize(inches)Barrierlength(ft)3&DescriptionfledzArea(sq.ft)OX~(0PurposePhysicalindependenceofAppendixRsafeshutdownsystems~EnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaaeduponfieldwalkdowns kg(~I AEP:NRC-0692CVAttachment.42.PageS8of~BarrierNo.20~~EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)z/2Barrierlength(ft)/Area(sq.ft)//Description-C5&6PZ-PgNWCh'gg/2Ahri.uhj~/KzA.PÃFu*rrAB-cs'AY~/5-tu~.7Acxc.7'sFb88c~mOA'So.WA/CcWrS'5lueV4~<.Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,descxibedbelowBarrierNo.EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)2.Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns~~

1rzl,lb',)AEP:NRC:0692CVAttachmentf2Page33of~BarrierNo.2.0C.~~Enclosedraceway/"C5-P2,oFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)2.Area(sq.ft)I2.Description'0/A'ZCOU*Y~PLA'5'Th)ok4&c.)C,5'habRE'AeH12."MZDF,CTOIZ5'A>rM5%AVAILS.Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendi.xRexemptionrequestOtherreason,describedbelowBarrierNo.EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)l2.0S~av-lK4)l~@J~-u~rv~sx>~8Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussed"inAppendixRexemptionrecpxestOtherreason,describedbelowI'ote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns

'~~E~"4~

AEP:NRC:0692CV.Attachment42,PageB~of~BarrierNo.2.0G~~EnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft).75"(w.("(~>DescriptionPMSOPPOPTE.DoaE+ouLL,fP-Ce'BoA=bEA3CLo7SZPAL=.LS.PurposePhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowrrierNo.EncldracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRfeshutdownsystemsEnclosureofinterveningcombustibles2rAppendixRDiscussedinAppendixRexemptionrequesOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns 54~C e~,AEP:NRC-0692CVAttachment42.PageBSof~.BarrierNo.2.oQ~~Enclosedraceway-C.52-IFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)Description'rea(sq.ft)0ad:MQ.Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowBarrierNo.modFireRatingEnclosedracewayConduit(C)/Tray(T)Size(inches)Barrierlength(ft)2DescriptionMueArea(sq.ft)'TPO.uR;Lok)Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns

,<<,2)~~PAEP:NRC:0692CVAttachment42Page~0of&~BarrierNo.2.1~~Fire"Rating'HPEnclosedracewayConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)S'~C.iO2JS.Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelow*************************************BarrierNo.(8R,FireRatingEnclosedracewayConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)2.S'7~9~Purpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaseduponfieldwalkdowns AEP:NRC-0692CVAttachmentf2Page~Bof98BarrierNo.W2.ClEnclosedracewayFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)N'A'rea(sq.ft)/ZDescriptionZ/vCAX'-c~/AX'-p/Eggyuk'uALLpurpose~PhysicalindependenceofAppendixRsafeshutdownsystemsEnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelow***+*+*****+****'k********************BarrierNo.2.2.BFireRatingEnclosedracewayS-CConduit(C)/Tray{T)Size{inches)~2./ZBarrierlength(ft)A'AArea(sq.ft)/DescriptionA~cÃCZSuWC/AZ/'AcWMOONh)DdHWgW4AZZPurpose~PhysicalindependenceofAppendixRsafeshutdownsystems~EnclosureofinterveningcombustiblesforAppendixRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:Dimensionsprovidedareestimatesbaaeduponfieldwalkdowns

~AI AEP:NRC:0692CVAttachment42-Page98'f~BazzierNo.FireRatingAAEnclosedracewayX2.Conduit(C)/Tray(T)Size(inches)~ABarrierlength(ft)Area(sq.ft)35'75'Ã6'</7DescriptionHA'~4~~Ra~Rw+7Ara+WZSr~S/nfQAvSAr&d&4&</5'.PurposePhysicalindependenceofAppendixRsafeshutdownsystemsEnclosuzeofinterveningcombustiblesfozAppendixRDiscussedinAppendixRexemptionrequest,~Otherreason,describedbelow~$'oXZa/&c7-ronrCE'f'CBarrierNEnclosedzacewFireRatingConduit(C)/Tray(T)Size(inches)Barrierlength(ft)DescriptionArea(sq.ft)PurposePhysicalindependenceofAppendixRsafeshuownsystemsEnclosuzeofinterveningcombustiblesforAppen'xRDiscussedinAppendixRexemptionrequestOtherreason,describedbelowNote:DimensionsprovidedareestimatesbaseduponfieldwalkdownsE~~