ML17216A625

Proposed Tech Specs,Incorporating Revised Pressure/Temp Limits & Results of Low Temp Overpressure Protection Analysis

ML17216A625
Person / Time
Site:	Saint Lucie
Issue date:	07/15/1986
From:	FLORIDA POWER & LIGHT CO.
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ML17216A624	List: ML17216A623 ML17216A625
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NUDOCS 8607220407
Download: ML17216A625 (37)

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ATTACHMENT3St.LucieUnit2P/TLimitsandLTOPAnalysisProosedTech'nicalSecificationChanesoReviseSpecification3.4.9.IoReplaceFigure3.4-2through3.4-4withnewFigures3.4-2through3.4-I5oReviseSpecification4.4.9.l.2oReviseSpecification3.4.9.3oAddTable3.4-3oRevisetheBasesforSpecification3/4.4.98b072204078b07158PDRADOCK0500038'9p'DRQMAS3/026/7 F~e~~e8'IVeelIe>>

REACTORCOOLANTSYSTEM3/4.4.9PRESSURE/TEMPERATURELIMITSREACTORCOOLANTSYSTEMLIMITINGCONDITIONFOROPERATION3.4.9.1TheReactorCoolantSysm(exceptthepressurizer)temperatureandpressureshallbelimitedinadancewithFiguresduringheatup,cooldown,criticality,andinserviceleakandhydrostatictesting,~k.a0b.C.Amimumheupof10inanyhourperodwithRcold1teeraturlessthanF.Aaximumhetupof30Finany-hourpriodwiRCScoldegtempaturegrterthan2'Fbutssthan18F.maximumhtupofFinan1-hourpiodwithCScoldlegterneraturegrtertha1184Fbulesstha3704F.maximumheatuof100Fiany1-urperiowithRCSoldlegmperaturgrearthan370F.Aaximumcoodownof04Finan1-hourpriodwitRCScoldegmperatureesstha754F.Aaximumcldownof04Fina1-houreriodwitRCScollegtempaturegrterthan54Fbutssthan864F.Aximumcoldownof04Fina1-houreriodwitRCScollegtemplatureeatertha864Fbulesstha974F.Aaximumcooldowof100'nanyhourper'withRcoldletemperategreatthan9F.Amximumtperatureangeofessthanrequal104Finny1-ourperdduringnserviceydrostatiandleatestingerationsovetheeatupancooldownimitcurs.APPLICABILITY:Atalltimes.ACTION:Withanyoftheabovelimitsexceeded,restorethetemperatureand/orpressuretowithinthelimitwi'thin30minutes;performanengineeringevaluationtodeterminetheeffectsoftheout-of-limitconditiononthestructuralintegrityoftheReactorCoolantSystem;determinethattheReactorCoolantSystemremainsacceptableforcontinuedoperationsorbeinatleastHOTSTANDBYwithinthenext6hoursandreducetheRCSTandpressuretolessavgthan200Fand500psia,respectively,withinthefollowing30hours.SURVEILLANCEREUIREMENTSI4.4.9.1.1TheReactorCoolantSystemtemperatureandpressureshallbedeterminedtobewithinthelimitsatleastonceper30minutesduringsystemheatup,cooldown,andinserviceleakandhydrostatictestingoperations.ST.LUCIE-UNIT23/44-29

~-.INSERVICE/HYDROTEST..COOLDOWN~":~'EATUP~::g2000g1500NIg1000Az5~~--'OWESTSERVICETEMP,:~172'F~~~5-)r::::.-:;.::':..:~::::.'.'ORECRITICAL::'INIMUM.BOLTUP:.'-."TEMP.62'F-'.:MIN.TEMP.:~:-..BOLTUP::CORE.CRITICAL~~~~541PSIA'52100SEETECH,SPEC.3.4.$-1FORHEATUPANDCOORATELIMITATIONSTRCS-INDICATEDRCSTEMP,'FFIGURE3.4-2REACTORCOOLANTSYSTEMPRESSURETEMPERATURELIMITATIONS0TO2YEARSOFOPERATIONST;LUCIE-UNIT2"3/44-31

'INSERVICE/HYDROTEST'=.:-:."l~~~W~-2500CILNCC8ICJDR2000::LOWEST:-'iSERVICETEMP1720FI1500IIRECRITICAL:'OOLDOWNPf:'SEEH.SPEC.3,4.9-1FORHTUPANDCOOLDOLIMITATIONS~~Ii~'I'-"".::j::.>::.:.-.-'MINTEMP'OLTUP:CORE.CRITICAL..-82100200TRCS~INDICATEDRCSTEMP,'FFIGURE3.44REACTORCOOLANTSYSTEMPRESSURETEMPERATURELIMITATIONS2TO10YEARSOFOPERATIONST.LUCIE-UNIT23/44-32 y1'"'NSERVICE/HYDROTE..COOLDOWNi:"HEATUP'...~~'CORECRITICAL.i:OaWN9aW5CLR516001000...-..LOWEST""'::.::SERVICE.TEMP"'172'FIIII'.:~:~~HEATUP.:..'.~iOOLDOWNCSEEH.SPEC.3.4.81'.FORHTUPANDCOOLDOLIMITATIONS.MIN.TEMP.BOLTUP'.::::'ORECRITICA062100200300400TRCS~INDICATEDRCSTEMP,'FFIGURE3.44REACTORCOOLANTSYSTEMPRESSURETEMPERATURELIMITATIONS10TO40YEARSOFOPERATIONST.LUCIE-UNET23/44-33 ST.LUCIE-2P/TLIMITS,5EFPYHEATUPANDCORECRITICAL2600~4~I~I60F/HR~~~~~~2000COe1600NI1000ICJQR500~~~~.LOWESTSERVICETEMP168oFF/HR636PSIA'CORECRITICALNAf<Nu/fIQLLOuOASMH0mSHU,4F/HRTemperatureUelt,4F00MIN.BOLTUPTEMP.M50100<3C7i3C7TCINDICATEDREACTORCOOLANTTEMPERATURE nJ~F~Zg-3ST.LUCIE-2P/TLIMITS,SEFPYCOOLDOWNANDINSERVICETEST2500~~~'-"-INSERVICETEST20001600Na1000Qa5ERMAL-ISOTH:LOWESTSERVICETEMP.168F680PSIA100F/HR8cISOTHERMAL='030SI1$lM<<OCaf-112112-illi12$NAXlfHLIMLLOtdALEC5RATggm,F/HRTemperatureUmit,F30F/HR10000MIN.BOLTUPTEMP.TCINDICATEDREACTORCOOLANTTEMPERATURE<F ST.LUCIE-2P/7LIMITS,10EFPYHEATUPANDCORECRITICAL.~~t504F/HR'tt~'~~I~t~~"'""i'~~i~t'I,*~~.~~~~~~~q~lOWESTSERVICETEMP.1684FII~~~~s'...".CORECRITICAF/HRNAWlmuNAL.Lo+ASLEIIU,RAT~>HU,F/HRTemperatureList,~F40SI100~3C7i3C7IMIN.BOlTUPTEMP.Q~1QO2QO30Q400TCINDICATEDREACTORCOOLANTTEMPERATURE'F 0~-P

<VST.LUCIE-2P/TLIMITS,10EFPYCOOLDOWNANDINSERVICETESTI--""INSERVICETEST~~~~~~~~~2000160010004Q-ISOTHERMALOWESTSERVICETEMP.168F~~~L~~F/HR5ISOTHAlhQtRATESCD,4F/HRTeaperatureUmIt,4F00660PSIASPF/HR65MINBOLTUPTEMP.2030$07$1N~~c1M1Q-130130-11C~1%TCINDICATEDREACTORCOOLANTTEMPERATURE,F Table1ST.LUCIE-2-LTOPSYSTEMCHARACTERISTICS,5EFPYReliefValveAlinmentTemeratures(F)SOTSReliefVaLu,esHU'DPORV','HUCD<102<161102-295161-286MaximumAllowableHeatuandCooldownRatesHU,F/HRTemperatureLlmi,FCD,F/HRTemperatureLimit,F0050100<367>36720305075100<8686-112112"128>128LTOPSstemGeneralReuirements[MaximumILTOPTemperatures:ForHeatup:ForCoo!down:MaximumSecondary-to-PrimaryTemperatureDifferentialforRCPStart:MaximumCalibrationIntervalforPressurizerPressureTransmitters:MaximumNumberofRCPsAllowedtoOperatebelow2004F:HPSIandChargingPump-CombinationsAllowedtobeAlignedtotheRCS:'AtT<200oFcAt2000F<T<295FC-.AtT->295oFc2954F286OFq0oF18monthsTwo2ChargingPumpsl1HPSIC3ChargingPumps2HPSI63ChargingPumps Table2ST;LUCIE-2LTOPSYSTEMCHARACTERISTICS,10EFPYReliefValveAllnmentTemeratures(F)SOSReliefValvesHUCDHUPORVCD<156<179156"313179"304MaximumAllowableHeatuandCooldownRatesHU,F/HRTemperatureLimit,FCD,F/HRTemperatureIimit,F4050100<367<<36?20305075100<104104"130130-146>146LTOPSstemCeneralReuirements[MaximumJLTOPTemperatures:ForHeatup:ForCooldown:MaximumSecondary-to-PrimaryTemperatureDifferentialforRCPStart:MaximumCalibrationIntervalforPressurizerPressureTransmitters:MaximumNumberofRCPsAllowedtoOperatebelow200oF:HPSIandChargingPumpCombinationsAllowedtobeAlignedtotheRCS:AtT<200~FAt200F<T<313Fc-AtT>313~Fc313oF304OF40oF18monthsTwo2ChargingPumps1HPSI63ChargingPumps2HPSI63ChargingPumps

Table3ST.LUCIE-2LTOPSYSTEMCHARACTERISTICS,15EFPYSQCSReliefVaLvesHUCD<165~<190165-324190-315ReliefValveAlinmentTemeratures(oF)PORV'-HUCDMaximumAllowableHeatuandCooldownRatesHU;FIHRTemperature,Limit,oFCD,FIHRTemperatureLimit,F4050100<8989-367>36720305075100<115115-141141-157~157LTOPSstemGeneralReuirements[Maximum]LTOPTemperatures:ForHeatup:ForCooldown:MaximumSecondary-to-PrimaryTemperatureDifferentialforRCPStart:MaximumCalibrationIntervalforPressurizerPressureTransmitters:MaximumNumberofRCPsAllowedtoOperatebelow200F:HPSIandChargingPumpCombinationsAllowedtobeAlignedtotheRCS:AtT<200oFAt200oF<T<324oFC-AtT>324oFC324oF315oF40oF18monthsTwo,2ChargingPumps1HPSI83ChargingPumps2HPSIC3ChargingPumps Table4SJ.LUCIE-2LTOPSYSTEMCHARACTERISTICS,20EFPYReliefValveAllnmentTemeratures('F)SACSReliefVabcesHUCDPORV,.=-.HUCD<172<196172-330196-3214050100<9696"367>36720305075100MaximumAllowableHeatuandCooldownRatesHU,F/HRTemperatureLimit,FCD,F/HRTemperatureLimit,~F<121121"147~147"'l63>163LTOPSstemGeneralReuirements[Maximum)LTOPTemperatures:~-ForHeatup:ForCooldown:MaximumSecondary.-to-PrimaryTemperatureDifferentialforRCPStart:MaximumCalibrationIntervalforPressurizerPressureTransmitters:MaximumNumberofRCPsAllowedtoOperatebelow200F:HPSIandChargingPumpCombinationsAllowedtobeAlignedtotheRCS:AtT<2000FAt200F<T<330FAtT>330~Fc3300F3214F400F18monthsTwo2ChargingPumps1HPSIC3ChargingPumps2HPSI63ChargingPumps Table5ST.LUCIE-2LTOPSYSTEMCHARACTERISTICS,25EFPYSIX;$ReliefValvesHUCDReliefValveAllnmentTemeratures(OF)PORV.'UCD~<178<201178-335201-326MaximumAllowableHeatuandCooldownRatesHU,F/HR~TemperatureLimit,FCD,F/HRTemperatureLimit,F4050100<102109-36736720305075100<8383-126126"152152-168>168'LTOPSstemGeneralReuirementsfMaximum)LTOPTemperatures:ForHeatup:ForCooldown:MaximumSecondary-to-PrimaryTemperatureDifferentialforRCPStart:MaximumCalibrationIntervalforPressurizerPressureTransmitters:MaximumNumberofRCPsAllowedtoOperatebelow200F:HPSIandChargingPumpCombinationsAllowedtobeAlignedtotheRCS:AtT<200~FAt200oF<T<335oFc-AtT>335oFC3350F326oF40oF18monthsTwo2ChargingPumps1HPSI63ChargingPumps2HPSIC3ChargingPumps Table6ST.LUCIE-2LTOPSYSTEMCHARACTERISTICS,'30EFPYSM;SReliefVaivqsHUCDReliefValveAllnmentTemeratures(~F)PORV.HUCD<182<205182-339205-330MaximumAllowableBeatuandCooldownRatesHU,F/HRTemperatureLimit,FCD,oF/HRTemperatureLimit,F4050100<106106-367>36720305075100<8787-130130-156156-172>172LTOPSstemGeneralReuirements[MaximumJLTOPTemperatures:ForHeatup:ForCooldown:MaximumSecondary-to-PrimaryTemperatureDifferentialforRCPStart:MaximumCalibrationIntervalforPressurizerPressureTransmitters:MaximumNumberofRCPsAllowedtoOperatebelow2000F:HPSIandChargingPumpCombinationsAllowedtobeAlignedtotheRCS:AtT<200FAt2000F<T<339oFc-AtT>>339oFC339~F330~F000F18monthsTwo2ChargingPumps1HPSI63ChargingPumps2HPSI63ChargingPumps Table7ST.LUCIE-2LTOPSYSTEMCHARACTERISTICS,32EFPYSDCSReliefValv.esHUCDReliefValveAlinmentTemeratures(oF)PORV.HUCD<184<207184-341207-332MaximumAllowableHeatuandCooldownRatesHU,F/HRTemperatureLimit,FCD,F/HRTemperatureLimit,oF4050100<108108"367>36720305075100<8989-132132-158158"174>174LTOPSstemGeneralReuirements[Maximum]LTOPTemperatures:ForHeatup:ForCooldown:MaximumSecondary-to-PrimaryTemperatureDifferentialforRCPStart:MaximumCalibrationIntervalforPressurizerPressureTransmitters:MaximumNumberofRCPsAllowedtoOperatebelow200'F:HPSIandChargingPumpCombinationsAllowedtobeAlignedtotheRCS:AtT<200FcAt200F<T<341oFc-AtT>341~FC341oF3320F40'F18monthsTwo2ChargingPumps1HPSI63ChargingPumps2HPSIC3ChargingPumps 25002000ca16000QICJ0RChCJ4100000ST.LUCIE-2P/7LIMITS,16EFPYHEATUPANDCORECRITICAL60oF/HRLOWESTSERVICETEMP.1684FCORECRITICAL-60F/HRNAXimumALLotdA~H/Q~~F/HRHU,F/HRTpepceatureLImit,F535PSIAcia85-3C7i3C71050'IOOMIN.SOLTUPTEMP.TCINOICATEOREACTORCOOLANTTEMPERATUREoF STLUCIE.2P/TLIMITS,46EFPYCOOLDOWNANDINSERVICETESTINSERVICETESTga.1600CCMLCS1000IC7ARCJgl4.600LOWESTSERVICETEMP.1684FISOTHERMAL-30F/HR-F/HTHERMR&ISO20305075100c11518-1e1111-157~157MAW~niwnALLau)ABLE,4RATCO,F/HRTeeperatureumit,1=0MIN.BOLTUPTEMP.TC~INDICATEDREACTORCOOLANTTEMPERATURE,F n/~FogygST.LUCIE-2P/TLIMITS,20EFPYHEATUPANDCORECRITICAL250050F/HR20001500NIL1000Q.,K500LOWESTSERVICETEMP.1684F504F/H4PF/HR535PSICORECRITICALtntsieveA~up,a~'YSSHU,F/HRTeeperatureLlmlt,4FMIN.BOLTUPTEMP.4050)00c9694-367i367TCINDICATEDREACTORCOOLANTTEMPERATURE'III ST.LUCIE-2P/TLIMITS,20EFPYCOOLDOWNANDINSERVICETEST2500INSERVICETESTa.1500etcNtt;01NWCJ4a5500LOWESTSERVICETEMP168oFISOTHERMALSO4F/HRSO1004F/HR8cISOTHEAL-20305075100ct21'IS-147117-163~Ni3Mhtmcj~At.mesh~COgAZgzI,OF/HRTemperatureLImIt,OF00MIN.BOLTUPTEMP.TC-INDICATEDREACTORCOOLANTTEMPERATURE,oF ST.LUCS,26EFPYHEATUPANDCORECRITICAL250060F/HR2000g1600NK1000C7z'0LOWESTSERVICETEMP168oF604F/HRF/HR635PSIACORECRITICALNhwimu~Ai<ouope.a.HU,FIHRTeeperatureUmit,F00MIN.BOLTUPTEMP,10SO100<1021Q-3C7367TCINDICATEDREACTORCOOLANTTEMPERATUREoF

ST.LUCIE-2P/TLIMITS,26EFPYCOOLDOWNANDINSERVICETESTINSERVICETEST2000gcg.1600N1000C8:5CLLOWESTSERVICE.TEMP.1684FISOTHERMAL.:.304F/HR100HR8cISOTHERMAL20305075100ce3el-126126-1$2152-16eF168NAWWunlAu.p+ABI.E,4DRNES'O,F/HRTemperatureLImit,F00MIN.BOLTUPTEMP.TCINDICATEDREACTORCOOLANTTEMPERATURE,F ST.LUCIE-2P/TLIMITS,30EFPYHEATUPANDCORECRITICAL604F/HR2000Os1500N1000AR4=LOWESTSERVICE~TEMP.1884F50F/HRF/HR638PSIARECRITICALHU,F/HRTamperatureLimit,F00ININ.BOLTUPTEINP.IO50100<<1061Q-367>367TCINDICATEDREACTORCOOLANTTElNPERATURE,4F STLUCIE-2P/TLIMITS,30EFPYCOOLDOWNANDINSERVICETESTINSERVICETEST20001600N4>000C(J.RLOWESTSERVICETEMP)B8oFISOTHERMAL30F/HR100F/H5ISOTMAL~(hlU4ALL~ABLE0RATESI,4F/HRTemperatureUmit,F20305075100c87l7"130130-'I56156"172>1720MIN.BOLTUPTEMP.TC-INDICATEDREACTORCOOLANTTEMPERATURE,F ST.LUCIE-2P/TLIMITS,32EFPYHEATUPANDCORECRITICALQPF/HR1600NlCLOWESTSERVICETEMP.1%IFCORECRITICALQPF/HRPA%(~v+~4~8MH0QATaSF/HRS35PSIAHU,4F/HRTanperatureLImlt,4F1050IOOclMlQ"367%367PpMIN.BOLTUPTEMP.TCiNDICATEDREACTORCOOLANTTEMPERATURE' ST.LUCIE-2P/TLIMITS,32EFPYCOOLDOWNANDINSERVICETESTINSERVICETEST1SOO41000IQR5sooISOTHERMAL30F/HRLOWESTSERVICETEMP.1684F100F/HR8cISOTHfRMAL20305075100<dS1%-132132"15015d-171%171~%imamAu,a~n~sCO,4F/HRTenpec'atureLimit,4F00N.BOLTUPTEMP.100200300400TCINDICATEDREACTORCOOLANTTEMPERATURE,F REACTORCOOLANTSYSTEMSURVEILLANCEREUIREMENTSContinued4.4.9.1.2Thereactorvesselmaterialirradiationsurveillancespecimensshallberemovedandexamined,todeterminechangesinmaterialproperties,attheintervalsrequiredby10CFR50AppendixHinaccordancewiththescheduleiTable4.4-5.Theresultsoftheseexaminationsshallbeusedtoupdate'ST.LUCIE"UNIT23/44-30 REACTORCOOLANTSYSTEMOVERPRESSUREPROTECTIONSYSTEMSLIMITING'CONOITIONFOROPERATIONMoga4Oosees5'aJPsoi'64<ereadov-vessellleUovIIso>ow+ŽIslessf'4~ovuJfo+<Qppr>plve,kv4<<gm<~I,e.3,+-3.3.4.9.3AtleastoneofthefollowinoverpressureprotectionsystemsshallbeOPERABLE:$7oa.Twopower-operatedrelivalves(PORVs),~are-withaliftsettingoflessthanorequaltopsia>a~dt~oshut~coot~qsyd~~r(i~FVnJVe5DCSRVg)>ACCOSYaliftSeft'in'fleSSf4~Orlq+SLlto$56PSi<~b.TheReactorCoolantSystemdepressurizedwithanRCSventofgreaterthanorequalto3.58squareinches.APPLICABILITY:ACTION:b.C.orogi~Spt5i'VogSbcSRVWithonePORVinoperae,restoretheinoperablePORVtoOPERABLEstatuswithin7daysordepressurizeandventtheRCSthroughagreaterthanorequalto3.58squareinchvent(s)withinthenext8hours.begsDcsRL(gWithbothPORsinoperable,depressurizeandventtheRCSthroughagreaterthanorequalto3.58suareinchvent(s)within8hours.SDCSVsIntheeventeitherthePORs~ortheRCSvent(s)areusedtomitigateaRCSpressuretransient,aSpecialReportshallbepreparedandsubmittedtotheCommissionpursuanttoSpecifiction6.9.2within30days.ThereportshalldescribethesbcsRVscircumstancesinitiatingthetransient,theeffectofthePORsorvent(s)onthetransientandanycorrectiveactionnecessarytopreventrecurrence.d.TheprovisionsofSpecification3.0.4arenotapplicable.SURVEILLANCEREUIREMENTS4.4.9.3.1EachPORVshallbedemonstratedOPERABLEby:a.InadditiontotherequirementsofSpecification4.0.5,operatingthevalvethroughonecompletecycleoffulltravelatleastonceper18months.ST.LUCIE-UNIT23/44"36 TABLE3.4-3LOWTEMPERATUREOVERPRESSUREPROTECTIONMaximumLTOPTemerature(F)TimeinLife(EFP)~HeatuCooldown0-55-l0I0-I5I5-2020-2525-3030-322953I332433033533934I2863043I532I326330332MA53/026/8 REACTORCOOLANTSYSTEMBASES3/4.4.9PRESSURE/TEMPERATURELIMITSAllcomponentsintheReactorCoolantSystemaredesignedtowithstandtheeffectsofcyclicloadsduetosystemtemperatureandpressurechanges.Thesecyclicloadsareintroducedbynormalloadtransients,reactortrips,andstartupandshutdownoperations.ThevariouscategoriesofloadcyclesusedfordesignpurposesareprovidedinSection5.2oftheFSAR.Ouringstartupandshutdown,theratesoftemperatureandpressurechangesarelimitedsothatthemaximumspecifiedheatupandcooldownratesareconsistentwiththedesignassumptionsandsatisfythestresslimitsforcyclicoperation.Duringheatup,thethermalgradientsinthereactorvesselwallproducethermalstresseswhichvaryfromcompressiveattheinnerwalltotensileattheouterwall.Thesethermalinducedcompressivestressestendtoalleviatethetensilestressesinducedbytheinternalpressure.Therefore,apressure-temperaturecurvebasedonsteadystateconditions(i.e.,nothermalstresses)representsalowerboundofallsimilarcurvesforfiniteheatuprateswhentheinnerwallofthevesselistreatedasthegoverninglocation.Theheatupanalysisalsocoversthedeterminationofpressure-temperaturelimitationsforthecaseinwhichtheouterwallofthevesselbecomesthecontrollinglocation.Thethermalgradientsestablishedduringheatupproducetensilestressesattheouterwallofthevessel.Thesestressesareadditivetothepressureinducedtensilestresseswhicharealreadypresent.Thethermalinducedstressesattheouterwallofthevesselaretensileandaredependentonboththerateofheatupandthetimealongtheheatupramp;therefore,alowerboundcurvesimilartothatdescribedfortheheatupoftheinnerwallcannotbedefined.Consequently,forthecasesinwhichtheouterwallofthevesselbecomesthestresscontrollinglocation,eachheatuprateofinterestmustbeanalyzedonanindividualbasis.TheheatupandcooldownlimitcurvesFiguresarecompositecurveswhichwerepreparedbydeterminingtemostconservasvecase,witheithertheinsideoroutsidewallcontrolling,foranyheatuporcooldownratesofupto100'Fperhour.Theheatupandcooldowncurveswerepreparedbaseduponthemostlimitingvalueofthepredictedadjustedreferencep0hig+he,Qpplicabl~/<au~~a~o~gFigures9,9-2.w~ghz.+-<z.ThereactorvesselmaterialshavebeentestedtodeterminetheirinitialRTNOTtheresultsofthesetestareshowninTableB3/4.4-1.,,Reactoropera-tionandresultantfastneutron(Egreaterthan1MeV)irradiationwillcauseanincreaseintheRT>OT.Therefore,anadjustedreferencetemperature,baseduponthefluenceandcoppercontentofthematerial'inquestion,canbepredictedusingFigur83/4.4-1andtherecommendationsofRegulatoryGuide1.99,Revisio,"EffectsofResidualElementsonPredictedRadiationOamagetoeactorVesselMaterials."TheheatupandcooldownlimitcurvesFiguresincludepredictedadjustmentsforthisshiftinRT>>attheendoftheapplicableserviceperiod,aswellasadjustmentsforpo45ibleerrorsinthepressureandtemperaturesensinginstruments.ST.LUCIE-UNIT2B3/44-8

REACTORCOOLANTSYSTEMBASES.PRESSURE/TEMPERATURELIMITSContinuedTheactualshiftinRTN>Tofthevesselmaterialwillbeestablishedperiodicallyduringoperationbyremovingandevaluating,inaccordancewithASTNE185-73and10CFRAppendixH,reactorvesselmCerialirradiationsurveil-lancespecimensinstalledneartheinsidewallofthereactor,vesselinthecorearea.ThesurveillancespecimenwithdrawalscheduleisshowninTable4.4-5.Sincetheneutronspectraattheirradiationsamplesandvesselinsideradiusareessentiallyidentical,themeasuredtransitionshiftforasamplecanbeappliedwithconfidencetotheadjacentsectionofthereactorvessel.TheheatupandcooldowncurvesmustberecalculatedwhenthedeltaRTNOTdeterminedfromthesurveillancecapsuleisdifferentfromthecalulteddeltaRTNOTfortheequivalentcapsuleradiationexposure.Thepressure-temperaturelimitlinesshownonFiguresforreactorcriticalityandforinserviceleakandhydrostatictestinghavebeenprovidedtoassurecompliancewiththeminimumtemperaturerequiyementsofAppendixGto10CFR50.ThemaximumRTN>TforallReactorCoolantSystempressure-retainingmate-rials,with,theexceptionofthereactorpressurevessel,hasbeendetermedto50F.TheLowestServiceTemperaturelimitlineshownonFiguresisbaseduponthisRTsinceArticleNB-2332(SummerAdendaof1972)ofSectionIIIoftheASIDEBo)NrandPressureVesselCoderequirestheLowestServiceTemperaturetobeRTN>T+100Fforpiping,pumps,andvalves.Belowthistemperature,thesystempressuremustbelimitedtoamaximumof20Kofthesystem'shydrostatictestpressureof3125psia.Thelimitations.imposedonthepressurizerheatupandcooldownratesandspraywatertemperaturedifferentialareprovidedtoassurethatthepres-surizerisoperatedwithinthedesigncriteriaassumedforthetperformedinaccordancewiththC4a)cp>F+gwcsMiaafvcsresoreQahmAgTheOPERABILITYoftwoPOsoranventopeningofgreaerthan3.58squareinchesensuresthattheRCSwillbeprotectedfrompressuretransientswhichcouldexceedthelimitsofAppendixGto10CFRPart50whenoneormoreoftheRCScoldlegsarelessthanorequalto280Fduringcooldownand320Fduringheatup.hasadeuaterelievcapabilitytoprotecttheRCSfromoverpressurzatsonwhentetransientislimitedtoeither(1)asafetyinjectionactuationinawater-solidRCSwiththepressurizerheatersenergizedor(2)thestartofanidleRCPwiththesecondarywatertemperatureofthesteamgeneratorlessthanorequalto4894abovetheRCScoldlegtemperatureswiththepressurizersolid.ST.LUCIE-UNIT2B3/44-11 0aejat