ML17212B589

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Submits Addl Info Re Seismic Qualification of Auxiliary Feedwater Sys in Response to Generic Ltr 81-14
ML17212B589
Person / Time
Site: Millstone, Saint Lucie  NextEra Energy icon.png
Issue date: 05/06/1982
From: UHRIG R E
FLORIDA POWER & LIGHT CO.
To: CLARK R A
Office of Nuclear Reactor Regulation
References
GL-81-14, GL-82-186, L-82-186, NUDOCS 8205110155
Download: ML17212B589 (6)


Text

0~~kAREGULATORYINFLATIONDISTRIBUTIONSYSTEMWIDE)ACCESSIONNBR!8205110155DOC~DA'TE!'82/05/06NOTARIZED:NOFACIL;50335St~Lucie'Plantr,Uni~t1<FloridaPower5LightCo,'AUTH~NAMEAUTHORAFFILIATIONUHRIGFR~E~FloradaPower,8LightCo,REiCIP~NAMERECIPIENTAFFILIATIONCLARKFR~A,OperatingReactorsBranch3DOCKET,05000335

SUBJECT:

"Submits.addiinforeseismicqualificationof.auxiliaryfeedwatersys'inresponsetoGenericLtr'8114'ISTRIBUTION:CODE:A09SSCOPIES'RECEIVED:LTR3.ENCLQSIZE'.8'ITLE:EquipmentAual-ification(ORKUNPREOL)NOTES:RECIPIENT-IDCODE/NAMEORB03BC,12INTERNAL:ELD12IE"'FILE.09NRR/DE/EQB07NRR/DL/ORAB060QiCOPIESLTTRENCL11211RECIPIENTIDCODE/NAMENELSONFG~01GC13NRRCALVOFJNRR/DLDIR14NRR/DSI/AEBRGN2COPIESLVTRENCL11111EXTERNAL:ACRSNRCPDRNTIS150231101'1LPDRNSIC03050:TOTALNUMBEROFCOPIESREQUIRED'TTR27'ENCL 4I~~IgI'Ij~

P'3OX529100MIAMI,FL33152FLORIDAPOWER&LIGHTCOMPANYMay6,1982L-82-186OfficeofNuclearReactorRegulationAttention:Mr.RobertA.Clark,ChiefOperatingReactorsBranchICF3DivisionofLicensing/,~U.S.NuclearRegulatoryCommissionWashington,D.C.20555

DearMr.Clark:

Re:St.LucieUnit1DocketNo.50-335@gPSeismicualificationofAuxiliaodebater('T'lPRef:1)R.A.Clark(NRC)lettertoR.E.UhrL),samesubject,dated4/2/82.2)R.E.Uhrig(FPL)letterL-81-411toD.G.Eisenhut(NRC)dated9/18/81.TheNRChasrequested,byReference(1),clarificationo'ftheSt.LucieUnit1AFWsystemboundaryasdiscussedinReference(2).Thisinformationisprovidedbelow.li0"ClarifytheextenttowhichyourAFWSystemboundarycoincideswiththeboundarydefinedinGenericLetter81-14,especiallyparts(a)and(b):(a)"TheAFWsystemboundaryfromsuctiontodischarge(includingthewatersourceandheatsink)shallincludethoseportionsofthesystemrequiredtoaccomplishtheAFWsystemfunctionandconnectedbranchpipinguptoandincludingthesecondvalvewhichisnormallyclosedorcapableofautomaticclosurewhenthesafetyfunctionisrequired".RESPONSE:Reference2addressedtheseismicCategoryIAFWsystemfrom~these>smicCategoryI)CondensateStorageTankoptotheterminalconnectionoftheAFWsystemtothe(seismicCategoryI)MainFeedwaterpiping.TheAFWsystemboundaryalsoincludesthe(seismicCategoryI)steamlineconnectionupstreamoftheMSIVswhichfeedthe(seismicCategoryI)steamturbinedrivenAFWpump.Theheatsinksarebyreference,the(seismicCategoryI)steamgeneratorsand(seismicCategoryI)MainSteampipinguptoandincludingtheseismicCategoryIAtmosphericDumpValvesandMainSteamIsolationValves.ThereisnogPRbranchpipinginthisflowpathwhichisrequiredtobeisolatedforSperformanceoftheAFWsystemfunction..8205110155820506'PDR..-ADOCK;0500~;BR5',r..'P=','".PDR'.PEOPLE...SERVINGPEOPLE 4,cRi Re:St.LucieUnit1DocketNo.50-335SeismicuglificationofAuxiliarFeedwaterSstem(b)"TheAFWSystemboundaryshallalsoincludeanyportionofbranchpipingthatisstructurallycoupledtotheAFWsystemboundarysuchthattheseismicresponseofthebranchpipingtransmitsloadstotheAFWsystem.Asaminimum,thisincludesthebranchlinesoutsidetheAFWsystemboundarytoapointofthreeorthgonalrestraints".RESPONSE:TherearenobranchpipingconnectionsintheAFWsystem.~0nynormalsmallborevents,drainsandinstrumenttapsallwithrootvalves,areprovidedasanintegralpartoftheAFWsystempiping.Thesevents,drainsandtapswereseismicallyanalyzedwiththeAFWsystempipingtomeetseismicCategoryIrequirements.(c)"Allmechanicalandelectrical'quipment,piping(e.g.,instrumentair),conduitsandcabletrays,whicharenecessaryorcontainitemswhicharenecessaryfortheoperationoftheAFWsystem,shallalsobeconsidered."(d)"Inaddition,thestructureshousingthesesystemsandcomponentsshallbeincluded".RESPONSE:itemc)andd)wereaddressedinouroriginalresponse~Reerence2).RobertE.UhrigVicePresidentAdvancedSystemsandTechnologyREU/PKG/DAV/mbdcc:ter.Jamesp.O'Reilly,RegionIIHaroldF.Reis,Esquire IJ~tVr~II4IIilt1IKSIII,II4IItI