ML17320A813
| ML17320A813 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 11/04/1983 |
| From: | ALEXICH M P INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | DENTON H R Office of Nuclear Reactor Regulation |
| References | |
| AEP:NRC:0692I, AEP:NRC:692I, NUDOCS 8311110135 | |
| Download: ML17320A813 (6) | |
Text
REGULATOINFORMATIONDISTRIBUTIONTEM('RIDS)'ACCESSIONNBR!8311110135DOC~DATES83/11/04NOTARIZED'NO.FACIL:503i5Donal.d'.6~'Cook>>Nuclear>>Power-.->>Plantg',Uni,t'iIndiana8"'.50316DonaldO~">>Cook'uclearPower.Planti'Uni,t2iIndiana8AUTH;NAME'AUTHORAFFILIATIONALEXICH~M,P,-Indiana8'Mjchigan=-Electric,Co,'REOIPNAMEiRECIPIKNTAFFILIATION:-DENTONgH,Rs..Office>>ofNucl'eartReactorIRegulation'irector>>.-SUBJECT;=-)Providesaddiinfore>>.ut)18308224submittal"L834021telconre"34h-fireprotection-of>>embeddedcables'Twoembedded'ablesfoundw/osufficient"firebarrier~to:provide"3hrating,Addiinsu1ation~will"be;provided..DISTRIBUTIONiCODE>>'AOOSSiCOPIES'RECEIVED:LTR,J,'NCL:,P'SIZE:."'TITLE>,OR'Submittal:Fire>>iProtection.NOTES!DOCKET¹0500031'505000316RECIPIENT>>IDCODE/NAME,NRR"ORB1>>BC'1.*INTERNALRELD/HDS3IE'i'WHITNEYgLNRR=WAMBACH.NRR'/DL-"'DIRRGN3>>COPIESI;TTR"ENCL>>4341=1,i..1RECIPIENTIDCODE/NAME,IE:;FILE>>06NRRFIORAVANT07DE/CEB09RKL04>>COPIESLTTRENCL1221EXT'ERNAL~ACRS.NRC>>PDRNTIS11025341>>LPDRNSIC,03'2051)TOTALNUMBEROF:COPIESREQUIRED!LTTR22ENCL.
iFMliiII)iFis>>Tocit>)ne"iinnr0).f<:c)y><<I<<P'l)ii)~<<.'c'ii)~'0fikey~A'0L)ly'O'>>Ii"OilyAOVIl~<>I~~~I>rRq~ira4>if)lno>>)e<<>r~'<<'1Jr)Ijr33i<l',gIcyo<)9:l6)'lir)'if9giy"tvf'l)),rgy61,irAilIrjy<r0IIc'Fyf'fr<~cliPP%4c~'IF'IF'fii'i'1v~0Ffili)l>rqPn','irvn'1il)i">nRQn))k~g)nr'Fi)july>l~c)l;8"plipf'fJgpggep0Irfilr'iirvnacrnP~yiraiF-la~r>4C<irar0tuaO<<~y.nu~f,t"9t'rhea<<i~rfI'yc>nremiyfi)~<>rfl~",;)~r0>>~."-fhIc..lIf:5)FIg'))ilP<I~<<lu~gyfl(yh:9l.>>)a)rIxt.,<fc,'I)or>r9qaw~a<~ir3;ft.e9r",jets>>..rli>:>jfIt INDIANA8MICHIGANELECTRICCOMPANYP.O.BOX16631COLUMBUS,OHIO43216November4,1983AEP:NRC:0692IDonaldC.CookNuclearPlant,UnitNos.1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74FIREPROTECTIONFOREMBEDDEDCABLESMr.HaroldR.Denton,DirectorOfficeofNuclearReactorRegulationU.S.NuclearRegulatoryCommissionWashington,D.C.20555
DearMr.Denton:
Thepurposesofthisletterare(1)toprovideadditionalinformationrelatedtoourprevioussubmittal(AEP:NRC:0692H)datedAugust22,1983and(2)toconfirmthetelephoneconversationwehadwithyourstaffonFriday,October21,1983concerningthree-hourfireprotectionofembeddedcablesattheDonaldC.CookNuclearPlant.Theprevioussubmittaltransmittedareport,datedMarch1983,whichwaspreparedbyourconsultants,EngineeringPlanningManagementIncorporated(EPM).Thatreportwastitled"SupplementalInformationSafeShutdownCapabilityAssessmentandProposedModifications,10CFR50,AppendixR,SectionIIIG."Section2oftheSupplementalReportstated,inpart,thattheadditionalbarriermassbetweentheembeddedcablesandthecoldside(ofthewall)willfunctionasaheatsink,loweringtheactualin-walltemperatureattheembeddedcabletoanumbersubstantiallylower.thanthe322FusedforthestandardNFPAbarrierrating.Atourrequest,EPMreviewedthebasesemployedintheSupplementalReport.WereceivedaletterfromEPM,datedSeptember28,1983,concerningtheadditionalreviews.TheinformationattachedtotheEPMletterstatedthatthecriticaltemperaturesatafourinchdepthreachedbetween500Fand600Fafterthreehours.Asdiscussedduringthetelephoneconversation,wehavetracedallsafetyrelatedcablesinfirezonestodeterminewhichzonesincludedmorethanoneEssentialSafetyFeatures(ESF)train.Asaresult,wefoundtwocasesinwhichembeddedcablesdidnothaveasufficientfirebarriertoprovideathree-hourzating.Inbothofthesecases,thecableswereinconcretepilasters,whicharenotpartofthestructuralwall.TheaffectedpilastersarelocatedinFireZone15inUnit1(i.e.,theredESFdivisionaldieselgeneratorroom)andFireZone19inUnit2(i.e.,thegreenESFdivisionaldieselgeneratorroom).Inbothcases,wewilladdsufficientinsulationtoprovideathree-hour8311110135831104PDRADOCK05000315FPDR 0t"0;fFt,hP~)Jrhf~=)>>III,h'I0P0I'~rhI'hf')0,,f.h'.0'),EI'ff"r'IItffIRrFjI'rf,Hr<<fr)')h~r)Ef1t'"'FI'*'>>qr)~~0'f~hj.fC>><<fI0EItE=h~~hfbiI'hW~--II(hRHfrt~I~0plh",'"hth<<fAI~jl0<<tf'hE)",0'"r),IIRE0hjrth0>>Ijhf')jlht.)-~>>y<<,.'h'tl0I'E;r~I>>)'l>>tjr)l)TE>>$0>>P)$f*I",ER'fEf>>h;0"))>>htrgrlwirIf'>>Pj~,0rhfF0rtf0'>>lttIg)'HrHf~'.>>rvFf,""),ff~
Mr.'HaroldR.onAEPsNRC:0692Ibarrier,withoutanyrelianceontheinsulationpropertiesoftheconcrete.TheinsulationmodificationwillnotrelyonanyconditionsaddressedintheSupplementalReport.Thisinformationshouldbefactoredintothedata-baseforyourSafetyEvaluationReportonfireprotectionwhich,weunderstandwewillbereceivingshortly.ThisdocumenthasbeenpreparedfollowingCorporateprocedureswhichincorporateareasonablesetofcontrolstoinsureitsaccuracyandcompletenesspriortosignaturebytheundersigned.Verytrulyyours,~iM.AlichVicePreidentMPA/pbcc:JohnE.DolanW.G.Smith,Jr.-BridgmanR.C.CallenG.CharnoffE.R.Swanson,NRCResidentInspector-Bridgman 0~-P1")Fa~~