Proposed Tech Specs,Correcting & Clarifying Info Re RCS Pressure & Temp Limits Rept Administrative Controls Requirements| ML17264B067 |
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Ginna  |
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| Issue date: |
10/08/1997 |
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| From: |
ROCHESTER GAS & ELECTRIC CORP. |
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| ML17264B066 |
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| NUDOCS 9710150247 |
| Download: ML17264B067 (10) |
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[Table view]
Category:TECHNICAL SPECIFICATIONS & TEST REPORTS
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[Table view] |
Text
eReporting Requirements 5.65.6Reporting Requirements 5.6.6PTLR(continued) c~Theanalytical methodsusedtodetermine theRCSpressureandtemperature andLTOPlimitsshallbethosepreviously reviewedandapprovedbytheNRCinNRCletterdated<NRCapprovaldocument>.
Specifically, themethodology isdescribed inthefollowing documents:
1.LetterfromR.C.Hecredy,Rochester GasandElectricCorporation (RG&E),toDocumentControlDesk,NRC,Attention:
GuyS.Vissing,"Application forFacilityOperating License,RevisiontoReactor,CoolantSystem(RCS)PressureandTemperature LimitsReport(PTLR)Administrative ControlsRequirements,"
Attachment VI,September 29,1997,assupplemented byletterfromR.C.Hecredy,RG&E,toGuyS.Vissing,NRC,"Corrections toProposedLowTemperature Overpressure Protection SystemTechnical Specification,"
October8,1997.2.WCAP-14040-NP-A, "Hethodology UsedtoDevelopColdOverpressure Hitigating SystemSetpoints andRCSHeatupandCooldownLimitCurves,"Sections1and2,January,1996.d.ThePiTLRshallbeprovidedtotheNRCuponissuanceforeachreactorvesselfluenceperiodandforrevisions orsupplement thereto.R..E.GinnaNuclearPowerPlant,97l0%50247 97l008PDRADOCK:05000244 PPDR5.0-22Amendment No.g,PP Reporting Requirements 5.65.6Reporting Requirements 5.6.6PTLR(continued)
C.TheSohTjt5i'algeet~83os'.'".'undid,'.:::;f o.,:detep.ije,':~t,e:
RCpressureandtemp'erature andLTOPliiiiitsskale1bethnosepreviously reviewedandapprovedby,theNRC.inNRCletterdatedNayR!IT-II$6~(NRCyiappto:.vaI::-::.".:::::;do'clument>:.
Specifically, theI1eIihe+ad-methodology
~<i'sdescribed inthefollowing documents:
1.LetterfromR.C.Mecredy,Rochester GasandElectricCorporation (RGKE),toDocumentControlDesk,NRC,A<<ti:~'CW@igi:,-,,::,i,--g, "Appl'lfFacilityOperating License,RevisiontoReactorCoolantSystem(RCS)PressureandTemperature LimitsReportP.rhOI'ta'aeEt'3'On
~<>>>>~2.IIlAP-14MO~i!NP::-.':A'Methodology UsedtoDevelopColdOverpressure Mitigating SystemSetpoints andRCSHeatupandCooldownLi~ie,,"~p%!I""n---iiil:"-,:::
--icu!,L-'"-..-..=.-"'~~~96:.
~~d.ThePTLRshallbeprovidedtotheNRCuponissuanceforeachreactorvesselfluencmperiodandforrevisions orsupplement thereto.R.E.GinnaNuclearPowerPlant5.0-22Amendment No.Q,PP
2.0 OPERATING
LIMITSThecycle-specific parameter limitsforthespecifications listedinSection1.0arepresented inthefollowing subsections.
Allchangestotheselimitsmustbedeveloped usingtheNRCapprovedmethodologies specified inTechnical Specification 5.6.6.Theselimitshavebeendetermined suchthatallapplicable limitsofthesafetyanalysisaremet.Allitemsthatappearincapitalized typearedefinedinTechnical Specification 1.1,"Definitions."
2.1RCSPressureandTemeratureLimits(LCO3.4.3andLCO3.4.12)(Reference 1)2.1.1TheRCStemperature rate-of-change limitsare:a.Amaximumheatupof60'Fperhour.b.Amaximumcooldownof100'Fperhour.2.1.2TheRCSP/Tlimitsforheatupandcooldownarespecified byFigures1and2,respectively.
2.1.3Theminimumboltuptemperature, usingthemethodology ofReference 4,Enclosure 2is60'F.2.2LowTemeratureOverressureProtection SstemEnableTemerature(LCOs3.4.6,3.4.7,3.4.10and3.4.12)(Methodology ofReference 3,Attachment VIandReference 6,ascalculated inReference 7).2.2.1Theenabletemperature fortheLowTemperature Overpressure Protection Systemis322'F.2.3LowTemeratureOverressureProtection SstemSetpints(LCO3.4.12)2.3.1Pressurizer Power0cratedReliefValveLiftSettinLimits(Methodology ofReference 3,Attachment VIandReference 6,ascalculated inReference 3,Attachment VII).Theliftsettingforthepressurizer PowerOperatedReliefValves(PORVs)is~411psig(includes instrument uncertainty).
PTLRRevision2 Table3showscalculations ofthesurveillance materialchemistry factorsusingsurveillance capsuledata.Table4provides'thereactorvesseltoughness data.Table5providesasummaryofthefluencevaluesusedinthegeneration oftheheatupandcooldownlimitcurves.Table6showsexamplecalculations oftheARTvaluesat24EFPYforthelimitingreactorvesselmaterial.
5.0REFERENCES
2.3.5.6.7.WCAP-14684, "R.E.GinnaHeatupandCooldownLimitCurvesforNormalOperation,"
datedJune1996.WCAP-14040-NP-A, "Hethodology UsedtoDevelopColdOverpressure Mitigating SystemSetpoints andRCSHeatupandCooldownLimitCurves,"Revision2,January1996.LetterfromR.C.Hecredy,RGIIE,toGuyS.Vissing,NRC,
Subject:
"Application forAmendment toFacilityOperating License,RevisiontoReactorCoolantSystem(RCS)PressureandTemperature LimitsReport(PTLR)Administrative ControlsRequirements,"
datedSeptember 29,1997.LetterfromR.C.Hecredy,RGIIE,toGuyS.Vissing,NRC,"Clarifications toProposedLowTemperature Overpressure Protection SystemTechnical Specification,"
datedJune3,1997.WCAP-7254, "Rochester GasandElectric, RobertE.GinnaUnitNo.1ReactorVesselRadiation Surveillance Program,"
May1969.LetterfromR.C.Hecredy,RGIIE,toGuyS.Vissing,NRC,"Corrections toProposedLowTemperature Overpressure Protection SystemTechnical Specification,"
October8,1997.RGIIEDesignAnalysisDA-HE-97-031, "Evaluation ofGinnaRCSCoolantTemperature toSupportLTOPSRequirements,"
Revision0.PTLRRevision2
~\
~whichever isgreater.RT>>Tisthehighestadjustedreference temperature forweldorbasemetalInthebeltlineregionatadistanceone-fourth ofthevesselsectionthickness fromthevesselinsidesurface,asdetermined byRegulatory Guide1.99,Revision2.-AIQeugh3.4EnableTemperature forLTOPSTheenabletemperature Isthetemperature belowwhichtheLTOPSsystemisrequiredtobeoperable.g ill:re,:iHWS",:::
0":-y..':!b~5l.I'd':".Iiiil!:iis
.=.:I:.rrrlyA8taa!CFdNCSSe~Np
>4satt'te%8ME!CsdettCSSer N4g~d::SuppOrtS::a~..eoa8te.;F@8"!ITIO+dt~~epera u~rOeiiSSP~O,dred::te:,.",the'reeetsrereeeetttrat meta%tomcrater;Ot"":BTtsraWSO.'.keraO'O'IIV-Ttte 3-8 whichever isgreaterasdescribed InSection3.3.ttt'Nr~dsffnitiÃf s."alsoaso cnT~d':bTrtlh14o ttfeelfnghcuaeCVmerSeCrcuy'%TfjeQInnaenableternPeratu Iedet~ennnedaa(87~+::.3'Ovs~Fj Q+!gnst~u.
~i:;:eyror Peffpw:::.:Qrnasslft~e..
peratvge~diffsreneedod::
31'%Thssnaa~inurnha logiiwopressure~iagii'0~of i~heatsadLatQa'e:.eve!down.;cttrve:cTNcutatsd.':.In,ac'oordancs;:wtih:fqtltendht
'8%to:,t'OCPsRSOUtj~PsrXASME~!CcdtrsCase::::M4'tsi TheRCScoldlegtemperature limitation forstartinganRCPisthesamevalueastheLTOPSenabletemperature toensurethatthebasisoftheheatinJection transient isnotviolated.
TheRandar4-Technical Specifications
~prohibit startinganRCPwhenanyRCScoldlegtemperatures islessthanorequaltotheLTOPSenabletemperature unlessthesecondary sidewatertemperature ofeachsteamgenerator islessthanorequalto50'FaboveeachoftheRCSCOldlegtemPeratureSKOrithegreeeur!Zeryat~er Valume<IS:
3%4'CnblbVafeet.':{38~741eV Jet'.3-9 curve(with10%additional margin)ascalculated inaccordance withAppendixGto10CFR50orthepeakRCSorRHRSystempressurebaseduponpiping/structural analysisloads.Thelowerpressureextremelsspecified bythereactorcoolantpumpP1sealminimumdifferential pressureperformance criteria.
Uncertainties inthepressureandtemperature instrumentation utilizedbytheLTOPSareaccounted forconsistent withthemethodology ofReference
2.0. Accounting
fortheeffectsofinstrumentation uncertainty imposesadditional restrictions onthesetpolntdevelopment, whichisalreadybasedonconservative pressurelimitssuchasasafetyfactorof2onpressurestress,useofalowerboundK,Rcurveandanassumed~/iTflawdepthwithalengthequalto1Ntimesthevesselwalithickness.
3.3Application ofASMECodeCaseN-514ASMECodeCaseN-514II allowsLTOPStolimitthemaximumpressureinthereactorvesselto110%ofthepressuredetermined tosatisfyAppendixG,paragraph G-2215,ofSectionXIofNtheASMEGodet'I.Theapplication ofASMECodeCaseN-514increases theoperating marginintheregionofthepressure-temperature limitcurveswheretheLTOPSisenabled.CodeCaseN-514alsorequiresLTOPStobeeffective atcoolanttemperatures lessthan200'Foratcoolanttemperatures corresponding toareactorvesselmetaltemperature, ata1/4tdistancefromtheinsidevesselsurface,lessthanRTgpr+50F,whichever isgreater.RTgpyisthehighestadjustedreference temperature forweldorbasemetalinthebeltlineregionatadistanceone-fourth ofthevesselsectionthickness fromthevesselinsidesurface,asdetermined byRegulatory Guide1.99,Revision2.3-7 Itt4*
EnableTemperature forLTOPSTheenabletemperature isthetemperature belowwhichtheLTOPSsystemisrequiredtobeoperable.
TheGinnaLTOPSenabletemperature Isestablished usingtheguidanceprovidedbyASMEXICodeCaseN-514.TheASMECodeCaseN-514supportsanenableRCSliquidtemperature corresponding tothereactorvessel1/4tmetaltemperature ofRT>>r+50'For200'F,whichever isgreaterasdescribed InSection3.3.Thisdefinition isalsosupported bytheWestinghouse Owner'sGroup.TheGinnaenabletemperature isdetermined as(RTD~+50'F)+(instrument errorI~I)+(metaltemperature difference to1/4T).Themaximumallowable pressureis110%ofthesteady-state cooidowncurvecalculated inaccordance withAppendixGto10CFR50'erASMECodeCaseN-514i"ITheRCScoldlegtemperature limitation forstartinganRCPisthesamevalueastheLTOPSenabletemperature toensurethatthebasisoftheheatinjection transient isnotviolated.
TheTechnical Specifications prohibitstartinganRCPwhenanyRCScoldlegtemperatures islessthanorequaltotheLTOPSenabletemperature unlessthesecondary sidewatertemperature ofeachsteamgenerator Islessthanorequalto50'FaboveeachoftheRCScoldlegtemperatures, orthepressurizer watervolumeis(324cubicfeet(38%level).3-8