ML17037B676

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Nine Mile Point Unit 1 - Letter Regarding a 10/01/1976 Letter Indicating Replacement Pages to the Plant Unique Analysis for the Torus Support System and Attached Revised Figures and Pages
ML17037B676
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 10/14/1976
From: Rhode G K
Niagara Mohawk Power Corp
To: Lear G
Office of Nuclear Reactor Regulation
References
TR-2271(a)
Download: ML17037B676 (12)


Text

DOCKCTNUMBERU.S.NUCLFARREGULATORYCMISSIONNRCFofiM195I2-7B)r0-22.0I'ILENUMBER'iagaraMohawkPwrCorpSyracuse,NYGKRhodeMrLearDATEOFDOCUMENT10-14-76DATERECEIVED10-19-76QNOTORIZEDKUNGLASSIFIEDf8fLETTERQfORIGINALC3copvNUMBEROFCOPIESRECEIVEDINPUTFORMPROPonesignedDESCRIPTIONENCLOSURERevisedpgstotheirReportentitledPlantUniqueAnalysisfortheTourusSupportSysteB).......toincorporatechangesrequiredbyour9-14-76ltr......;(40cysenclrecfd)Ltr,retheir10 76ltr....transthefollowPLANTNAME:NineMilePtOlFORACTION/INFORMATIONSAFETY10-2ASSIGNEDAD:BRANCHCHIEF:ASSONEDPROJECTMANAGER:PROLXC~ASST'~'.RlBUTIONINTERNALDISTSYSTEMSSAFETYILESITEAHEINEIIANSCHROEDERNRCPDRX&EZ.ENVIRONABENAROYAF.OELD'.GOSSICK&STAFFENGINEERINGMACCARRYIPPOLITOMIPCKRKWOOKNIGHTSIIWEILPAWLXCKIREACTORSAFE'IIYCASE'ANAUEROPERATINROC0SLEROJECIIANAEIIENOPERANROSSBOYD~PCOLLINSHOUSTONEISEN11NOVAKROSZTOCZYSIIAOBAERPETERSONCHECKBUTLERMELTZHELTEMESRIMESAT&ISKOVHOLTSALTZMAN~MQLLIRUTBE'.RGCONTROLNUMBEREXTERNALDISTRIBUTIONNATLA13:RL'G~VIELPDR!wBROOKIIAULRIKSONORNLTXC:LAPDRCONSULTANTSASLB~lLCI<SSGYS4l&HRtlC7.RN~OLAJrk-LMNfICFof)MIOII(2i7II)NRCDISTRIBUTIONFoRPART50DOCKETMATERIAL

.~Ii>T-~4-0.>>4f*I~."'>g-pz-"g<e"<<~'}>gl;~7)'b"9')'g(0,,'~4"$~)e~~~~~~~I'g.'r1 NIAGARAMOHAWKPOWERCORPORATION4>llitlIIINIAGARA~MOHAWK300ERIE8OULEVAROWESTSYRACUSE,N.Y.13202October14,1976DirectorofNuclearReactorRegulationAttn:Hr.GeorgeLear,ChiefOperatingReactorsBranch0'3U.S.NuclearRegulatoryCommissionh'ashington,D.C.20555Re:NirieMilePointUnit1Docket.No.50-220DPR-63IIyg<g(gbeg4

DearHr.Lear:

InourOctober1,1976letterweindicatedthat'eplacementpagesto"ourPlantUniqueAnalysisfortheTorusSupportSystemwouldbeprovidedtoincorporatechangesnecessitatedbyyourSeptember14,1976letter.AttachedarerevisedFigures14;15andPages59and73.Page73hasbeencorrectedtoincorporatetheproperreferencesusedinthePlantUniqueAnalysis.Theeffectof'ariationonwaterlevelhasbeeninvestigatedtoensurethattheTorusSupportSystemandattachedpipingremainswithinthecriteriaoftheShortTermProgram..Fora1.0psid,t'emaximumallowabledowncomersubmergenceis4.0feet.Operationatadowncomersubmergenceof4.5feetcouldbetoleratedifthepressuredifferentialwereincreasedto1.5psig.TechnicalSpecificationsgoverningtheabovewillbesubmittedbyNovember5,1976pursuanttoyourSeptember30,1976letter.Verificationofinputparametershasbeencompleted.TheDesignBasisBreakAreawascorrectedto5.446squaref'eetandtheVentHeaderoutsidediameterwascorrectedto58.5inches.Thesechangeshaveanegligibleeffectontheresultsoftheanalysis.Verytrulyyours,NIAGARAHONAWKWERCOR8TIONoi(ryHGH/sz/AttachmentGRALDK.RDEVicePresident-Eineering/of 1'-1r'm1PN LEDYNEATERIALSRESEARCH>&I~~I-LaJUJ.0",',l5t/)CI~9'ion<0~00~QQ~~TINE(seconds)Fig.14AnchorBoltDisplacementvsTime I

-pq"It-LLUYlMe.~MATERwLsREsEARcicngrnnnaOr'r0-2SGQ'aOgnr7COnrn1QQQQr-12500'1'5000r-17'iGOr-"GO@'TIME(Seconds)Fig.15ColumnLoadvsTime.

1 TechnicalReportTR-227)(a)6.2.4.Ancl>nrOoltsEachcolun!nofthe)lineHilePointl.orusistiedtothe~concretefloorbytwo')1/2inchdia!<eterhoo):-typeanchorboltse!nbedded40inchesintotheconcrete.Th<<boltsaren!adeol'-36steel;EvaluationofthestructuralcapacityoftheanchorboltstotheSTPcriteriare<)uirestheuseoft)r<'.1-0!nodelres<<its.Responseplotsoftotalanchorboltdel'lection(ir!cludi>>geff<<..'ts<rl'oncrete)andtotalcolumnload(including<!eadweight)areprese!!Ledinfigures'l4and15.Evaluatior!ofthea>>chorI:o)L'sacceptabi1ityisgreatlysimplifiedbyexamir!ingthecol;!mnforcesfirst.1lefindthatthen!ax-irnumupwardcolun!nforeiseqllalt<r255,000lbsandoccursat.55sec.Applyingthisloa<l~l:at&:a>)vLoth<!fouranc>>o<boltsar!<Icalcu)atinqtheresultingstrain,wefi>>d!')rattheanclrorbo)tsarew<.llbelowyieldarrdhaveexperiencedonly0.0013strvin.T)r<l:iswelllreluwLl!>>slrai>>lirnit-ationsoftireSlPcriteria!'!n.lt)<erefo!<:.,atisl'iesthere<luire!nentsfortheboltsthemselves.Fvaluatinr!ofcolumn')oadsd!<>>L<rfallbackpresentsnoproblemsincetheyneverreac)rthe<<xia)co)!Imrlloa<ls"flowninsection6.2.1;i.e.,1012.2KfPSfortwoco]un!ns.

TechnicalReportTR-2271(a)~-73-riTELEDYNEMATERIALSRESEARCHREFERENCES1."DescriptionofShortTermProgramPlantUnjqueTorusSupportSystemsandAttachedPipingAnalysis,"NutechPeportHK1-02-12Rev.2,June1976.2."HarkIContainmentProgramLoadsforPlantUniqueTorusEvaluation,"Rev.2,GeneralElectricCo.,June,1976.3,"MarkIContainmentEvaluation-ShortTermFinalReport,Agdendums2and3"NEDC-20989-P.4.TorustoVentPipeMatrixData,transmittedtoHr.J.A.Wayward,TeledyneMaterialsResearch,fromHr.K.Wiedner,BechtelPowerCorp.,4September1975.5."GeneralDescriptionofaBoilingWaterReactor,"GeneralElectricAtomicEquipmentDepartment.6.LetterfromMr-.M.G.Hosier,NiagaraMohawkPowerCorp.,toMr.N.Celia,TeledyneMaterialsResearch,llJune1976.7.ASMEBoilerandPressureVesselCode,SectionIII,SubsectionsNAandNE,1974EditionwithaddendathroughSummer1975.8."ExtrapolatedLoad-DisplacementCurvefor1.5InchDiameterAnchorBolts,"transmittedtoMr.R.H.Buchholz,General'ElectricCo,,from-Mr:R.W.Wulf,JerseyCentra'lPower5LightCo.,withcopytoHr.R.Smart,NortheastUtilitiesServiceCo.,17May1976.9.PathwayBellowsInc.,Dwg.g-2892Rev.D,90"Dia.TandemWeldEndAssembly10."HarkIContainmentEvaluation--ShortTermProgram,"NEDC-20989-P,GeneralElectricCo.

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