ML17212A711: Difference between revisions

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| document type = TECHNICAL SPECIFICATIONS, TECHNICAL SPECIFICATIONS & TEST REPORTS
| document type = TECHNICAL SPECIFICATIONS, TECHNICAL SPECIFICATIONS & TEST REPORTS
| page count = 7
| page count = 7
}}
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{{#Wiki_filter:3/4.1REACTIVITYNTROLSYSTEMS3/4.1.1BORATIONCONTROLSHUTDOWNMARGIN-T>200.FLIMITINGCONDITIONFOROPERATION3.1.1.1TheSHUTDOWNMARGINshallbe>5.0%%k/k.APPLICABILITY:MODES1,2*,3and4.ACTION:WiththeSHUTDOWNMARGIN<5.0/gk/k,immediatelyinitiateandcontinueborationat>40gpmof1720ppmboronorequivalentuntiltherequiredSHUTDOWNMARGTNisrestored.SURVEILLANCEREUIREMENTS4.1.1.1.1TheSHUTDOWNMARGINshallbedeterminedtobe>5.0g,hk/k:a~b.C>>d.WithinonehourafterdetectionofaninoperableCEA(s)andatleastonc'eper12hoursthereafterwhiletheCEA(s)isinoperable.IftheinoperableCEAisimmovableoruntrippable,theabove.requiredSHUTDOWNMARGINshallbeincreasedbyanamountatleastequaltothewithdrawnworth'ftheimmovableoruntrippableCEA(s).ltheninMODES1or2g,at-leastonceper12hoursbyverifyingthatCEAgroupwithdrawaliswithinthePowerDependentInsertionLimitsofSpecification3.1.3.6.WheninMODE2gg,atleastonceduringCEAwithdrawalandatleastonceperhourthereafteruntilthereactoriscritical.Priortoinitialoperationabove5/RATEDTHERMALPOWERaftereachfuelloading,byconsiderationofthefactorsofebelow,withtheCEAgroupsatthePowerDependentInsertionLimitsofSpecification3.1.3.6.SeeSpecialTestException3.10.1.WithKeff>1.0WithKff<leO.STLUCIE-UNIT13/41-181091002iS8i0904PDRADOCKOS00033SPPDR 0I0~?fl*I'*4h\P REACTIVITYCONTROLSYSTEMSSURVEILLANCEREQUIREMENTSContinuede.WheninMODES3or4,atleastonceper24hoursbyconsiderationofthefollowingfactors:l.2.3.4,5.6.Reactorcoolantsystemboronconcentration,CEAposition*Reactorcoolantsystemaveragetemperature,Fuelburnupbasedongrossthermalenergygeneration,Xenonconcentration,andSamariumconcentration.4.1.1.1.2Theoverallcorereactivitybalanceshallbecomparedtopredictedvaluestodemonstrateagreementwithin+1.(Cak/katleastonceper31EffectiveFullPowerDays(EFPD).ThiscuoparisonshallconsideratleastthosefactorsstatedinSpecification4.1.l.l.l.e,above.Thepredicted.reactivityvaluesshallbe.adjusted(normalized)tocorrespondtotheactualcoreconditionspriortoexceedingafuelburnupof60EffectiveFullPowerDaysaftereachfuelloading.*ForModes3and=4,duringcalculationofshutdownmarginwithallCEA'sverifiedfully:inserted,thesingleCEAwiththe'highestreactivityworthneednotbeassumedtobe'stuckinthefullywithdrawnposition.ST.LUCIE-UNIT13/41-2 AEACTIVITY.CONTROLSYSTEMSMODERATORTEMPERATURECOEFFICIENTLIMITINGCONDITIONFOROPERATION3.1.1.4Themoderatortemperaturecoefficient(MTC)shallbe:a.Lesspositivethan0.5x104bk/k/'FwheneverTHERMALPOWERis<7'fRATEDTHERMALPOWER,b.Lesspositivethan0.2x1046,k/k/'FwheneverTHERMALPOWERis>7(gofRATEDTHERMALPOWER,andc.Lessnegativethan-2.2x104b,k/k/'FatRATEDTHERMALPOWER.'PPLICABILITY:MODES1.and2*4ACTION:Withthemoderatortemperaturecoefficientoutsideanyoneoftheabove,limits,,beinHOTSTANDBYwithin6hours.SURVEILLANCEREQUIREMENTS4.1.1.4.1TheMTCshallbedeterminedtobewithinitslimitsbyconfirmatorymeasurements.MTCmeasuredvaluesshallbeextrapolatedand/orcompensatedtopermitdirectcomparisonwiththeabovelimits.*WithKff>1.0.gSeeSpecialTestException3.10.2ST.LUCIE-UNIT13/41-5
)<<,Y..v3/4.4REACTORCOTSYSTEMREACTORCOOLANTLOOPS'IMITINGCONDITIONFOROPERATION3.4.1Fourreactorcoolantpumpsshallbeinoperation.APPLICABILITY:Asnotedbelow,butexcludingMODE6.'CTION:MODES1and2:,'+.-"-"'Withlessthanfourreactorcoolantpumpsinoperation.beinatleastHOT;::;~:.STANDBYwithin6hours.4MODES3,4and5:Operationmayproceed"provided(1)atleastonereactorcoolant.loopisin'-'.-":;.-,operation,withanassociatedreactorcoolantpumporshutdowncoo'l,ingpumpand':-"(y(2)theSHUTOONNNARGIN'requirementofSpecification3.1.1.1isincreasedto""andmaintainedat>5.0g,hk/kduringoperationinflODE3whenlessthanfourreactorcoolantpumpsareinoperation.TheprovisionsofSpecifications3.0.3and3.0.4arenotapplicable.SURVEILLANCEREQUIREMENT4.4.1TheF1owDependentSelectorSwitchshallbedeterminedtobeinthe4pumppositionwithin15minutespriortomakingthereactorcritica'Iandatleastonceper12hoursthereafterAllreactorcoolantpumpsandshutdowncoolingpumpsmaybede-energizedforupto1hour,providednooperationsarepermittedwhichcouldcausedilutionofthereactorcoolantsystemboronconcentoation.ST.LUCIE-UNIT13/44-1 3/4.1REACTIVITNTROLSYSTEMSBASES3/4.1.1BORATIONCONTROL3/4.1.1.1AND3/4.1.1.2SHUTDOWNMARGINAsufficientSHUTDOWNMARGINensuresthat1)thereactorcanbemadesubcriticalfromalloperatingconditions,2)thereactivitytransientsassociatedwithpostulatedaccidentconditionsarecontrollablewithinacceptablelimits,and3)thereactorwillbemaintainedsufficientlysubcriticaltoprecludeinadvertentcriticalityintheshutdowncondition.SHUTDOWNMARGINrequirementsvarythroughoutcorelifeasafunctionoffueldepletion,RGS'-boronconcentration,andRCSTavThemostrestrictiveconditionoccursat'.EOL,withTavatnoloadoperatingtemperature,andisassociatedwith.a'ostulatedsteamlinebreakaccidentandresultinguncontrolledRCS,cooldown.Intheanalysisofthisaccident,yminimumSHUTDOWNMARGIN,:,'.:of5.OXd.k/kisrequiredtocontrolthereactivitytransient.Accord'i'ngly,theSHUTDOWNMARGINrequiredbySpecification3.1.1.1isbaseduponthi'slimitingconditionandisconsist'entwithFSARaccidentanalysisassumptions.Forearlierperiodsduringthefuelcycle,thisvalueisconservative.WithTav<200Fthereactivitytransientsresultingfrom-anypostulatedaccidentateminimaland'2g,ak/kshutdownmarginprovidesadequateprotection.3/4.1.1.3BORONDILUTIONANDADDITIONAminimumflowrateofatleast3000GPMprovidesadequatemixing,preventsstratificationandensuresthatreactivitychangeswillbegradualduringboronconcentrationchangesintheReactorCoolantSystem.Aflowrateofatleast3000GPMwillcirculateanequivalentReactorCoolantSystem.volumeof11,400cubicfeetinapproximately26minutes..Thereactivity.changerateassoicatedwithboronconcentrationchangeswillbewithin.thecapabilityforoperatorrecognitionandcontrol.3/4.1.1.4MODERATORTEMPERATURECOEFFICIENTMTCThelimitingvaluesassumedfortheMTCusedintheaccidentandtransientanalyseswere+0.5x10"<k/k/'FforTHERMALPOWERlevels<7QofRATEDTHERMALPOWER,+0.2x104ak/k/'FforTHERMALPOWERlevels>70g,ofRATEDTHERMALand-2.2x104h,k/k/'FatRATEDTHERMALPOWER.Therefore,theselimitingvaluesareincludedinthisspecification.DeterminationofMTCatthespecifiedconditionsensuresthatthemaximumpositiveand/ornegativevaluesoftheMTCwillnotexceedthelimitingvalues.ST.LUCIE-UNIT1B3/41-1 0'I4II
}}
}}

Revision as of 12:37, 26 April 2018

Proposed Amended Tech Specs 3/4.1.1,3.1.1.1,4.1.1.1,4.1.1.2, 3.1.1.4,4.1.1.4.1,3.4.1,4.4.1,3/4.1.1.1,3/4.1.1.2,3/4.1.1.3 & 3/4.1.1.4 for Boration Control,Moderator Temp Coefficient, Reactor Coolant Pumps & Boron Dilution & Addition
ML17212A711
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 09/04/1981
From:
FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17212A710 List:
References
NUDOCS 8109100215
Download: ML17212A711 (7)


Text

3/4.1REACTIVITYNTROLSYSTEMS3/4.1.1BORATIONCONTROLSHUTDOWNMARGIN-T>200.FLIMITINGCONDITIONFOROPERATION3.1.1.1TheSHUTDOWNMARGINshallbe>5.0%%k/k.APPLICABILITY:MODES1,2*,3and4.ACTION:WiththeSHUTDOWNMARGIN<5.0/gk/k,immediatelyinitiateandcontinueborationat>40gpmof1720ppmboronorequivalentuntiltherequiredSHUTDOWNMARGTNisrestored.SURVEILLANCEREUIREMENTS4.1.1.1.1TheSHUTDOWNMARGINshallbedeterminedtobe>5.0g,hk/k:a~b.C>>d.WithinonehourafterdetectionofaninoperableCEA(s)andatleastonc'eper12hoursthereafterwhiletheCEA(s)isinoperable.IftheinoperableCEAisimmovableoruntrippable,theabove.requiredSHUTDOWNMARGINshallbeincreasedbyanamountatleastequaltothewithdrawnworth'ftheimmovableoruntrippableCEA(s).ltheninMODES1or2g,at-leastonceper12hoursbyverifyingthatCEAgroupwithdrawaliswithinthePowerDependentInsertionLimitsofSpecification3.1.3.6.WheninMODE2gg,atleastonceduringCEAwithdrawalandatleastonceperhourthereafteruntilthereactoriscritical.Priortoinitialoperationabove5/RATEDTHERMALPOWERaftereachfuelloading,byconsiderationofthefactorsofebelow,withtheCEAgroupsatthePowerDependentInsertionLimitsofSpecification3.1.3.6.SeeSpecialTestException3.10.1.WithKeff>1.0WithKff<leO.STLUCIE-UNIT13/41-181091002iS8i0904PDRADOCKOS00033SPPDR 0I0~?fl*I'*4h\P REACTIVITYCONTROLSYSTEMSSURVEILLANCEREQUIREMENTSContinuede.WheninMODES3or4,atleastonceper24hoursbyconsiderationofthefollowingfactors:l.2.3.4,5.6.Reactorcoolantsystemboronconcentration,CEAposition*Reactorcoolantsystemaveragetemperature,Fuelburnupbasedongrossthermalenergygeneration,Xenonconcentration,andSamariumconcentration.4.1.1.1.2Theoverallcorereactivitybalanceshallbecomparedtopredictedvaluestodemonstrateagreementwithin+1.(Cak/katleastonceper31EffectiveFullPowerDays(EFPD).ThiscuoparisonshallconsideratleastthosefactorsstatedinSpecification4.1.l.l.l.e,above.Thepredicted.reactivityvaluesshallbe.adjusted(normalized)tocorrespondtotheactualcoreconditionspriortoexceedingafuelburnupof60EffectiveFullPowerDaysaftereachfuelloading.*ForModes3and=4,duringcalculationofshutdownmarginwithallCEA'sverifiedfully:inserted,thesingleCEAwiththe'highestreactivityworthneednotbeassumedtobe'stuckinthefullywithdrawnposition.ST.LUCIE-UNIT13/41-2 AEACTIVITY.CONTROLSYSTEMSMODERATORTEMPERATURECOEFFICIENTLIMITINGCONDITIONFOROPERATION3.1.1.4Themoderatortemperaturecoefficient(MTC)shallbe:a.Lesspositivethan0.5x104bk/k/'FwheneverTHERMALPOWERis<7'fRATEDTHERMALPOWER,b.Lesspositivethan0.2x1046,k/k/'FwheneverTHERMALPOWERis>7(gofRATEDTHERMALPOWER,andc.Lessnegativethan-2.2x104b,k/k/'FatRATEDTHERMALPOWER.'PPLICABILITY:MODES1.and2*4ACTION:Withthemoderatortemperaturecoefficientoutsideanyoneoftheabove,limits,,beinHOTSTANDBYwithin6hours.SURVEILLANCEREQUIREMENTS4.1.1.4.1TheMTCshallbedeterminedtobewithinitslimitsbyconfirmatorymeasurements.MTCmeasuredvaluesshallbeextrapolatedand/orcompensatedtopermitdirectcomparisonwiththeabovelimits.*WithKff>1.0.gSeeSpecialTestException3.10.2ST.LUCIE-UNIT13/41-5

)<<,Y..v3/4.4REACTORCOTSYSTEMREACTORCOOLANTLOOPS'IMITINGCONDITIONFOROPERATION3.4.1Fourreactorcoolantpumpsshallbeinoperation.APPLICABILITY:Asnotedbelow,butexcludingMODE6.'CTION:MODES1and2:,'+.-"-"'Withlessthanfourreactorcoolantpumpsinoperation.beinatleastHOT;::;~:.STANDBYwithin6hours.4MODES3,4and5:Operationmayproceed"provided(1)atleastonereactorcoolant.loopisin'-'.-":;.-,operation,withanassociatedreactorcoolantpumporshutdowncoo'l,ingpumpand':-"(y(2)theSHUTOONNNARGIN'requirementofSpecification3.1.1.1isincreasedto""andmaintainedat>5.0g,hk/kduringoperationinflODE3whenlessthanfourreactorcoolantpumpsareinoperation.TheprovisionsofSpecifications3.0.3and3.0.4arenotapplicable.SURVEILLANCEREQUIREMENT4.4.1TheF1owDependentSelectorSwitchshallbedeterminedtobeinthe4pumppositionwithin15minutespriortomakingthereactorcritica'Iandatleastonceper12hoursthereafterAllreactorcoolantpumpsandshutdowncoolingpumpsmaybede-energizedforupto1hour,providednooperationsarepermittedwhichcouldcausedilutionofthereactorcoolantsystemboronconcentoation.ST.LUCIE-UNIT13/44-1 3/4.1REACTIVITNTROLSYSTEMSBASES3/4.1.1BORATIONCONTROL3/4.1.1.1AND3/4.1.1.2SHUTDOWNMARGINAsufficientSHUTDOWNMARGINensuresthat1)thereactorcanbemadesubcriticalfromalloperatingconditions,2)thereactivitytransientsassociatedwithpostulatedaccidentconditionsarecontrollablewithinacceptablelimits,and3)thereactorwillbemaintainedsufficientlysubcriticaltoprecludeinadvertentcriticalityintheshutdowncondition.SHUTDOWNMARGINrequirementsvarythroughoutcorelifeasafunctionoffueldepletion,RGS'-boronconcentration,andRCSTavThemostrestrictiveconditionoccursat'.EOL,withTavatnoloadoperatingtemperature,andisassociatedwith.a'ostulatedsteamlinebreakaccidentandresultinguncontrolledRCS,cooldown.Intheanalysisofthisaccident,yminimumSHUTDOWNMARGIN,:,'.:of5.OXd.k/kisrequiredtocontrolthereactivitytransient.Accord'i'ngly,theSHUTDOWNMARGINrequiredbySpecification3.1.1.1isbaseduponthi'slimitingconditionandisconsist'entwithFSARaccidentanalysisassumptions.Forearlierperiodsduringthefuelcycle,thisvalueisconservative.WithTav<200Fthereactivitytransientsresultingfrom-anypostulatedaccidentateminimaland'2g,ak/kshutdownmarginprovidesadequateprotection.3/4.1.1.3BORONDILUTIONANDADDITIONAminimumflowrateofatleast3000GPMprovidesadequatemixing,preventsstratificationandensuresthatreactivitychangeswillbegradualduringboronconcentrationchangesintheReactorCoolantSystem.Aflowrateofatleast3000GPMwillcirculateanequivalentReactorCoolantSystem.volumeof11,400cubicfeetinapproximately26minutes..Thereactivity.changerateassoicatedwithboronconcentrationchangeswillbewithin.thecapabilityforoperatorrecognitionandcontrol.3/4.1.1.4MODERATORTEMPERATURECOEFFICIENTMTCThelimitingvaluesassumedfortheMTCusedintheaccidentandtransientanalyseswere+0.5x10"<k/k/'FforTHERMALPOWERlevels<7QofRATEDTHERMALPOWER,+0.2x104ak/k/'FforTHERMALPOWERlevels>70g,ofRATEDTHERMALand-2.2x104h,k/k/'FatRATEDTHERMALPOWER.Therefore,theselimitingvaluesareincludedinthisspecification.DeterminationofMTCatthespecifiedconditionsensuresthatthemaximumpositiveand/ornegativevaluesoftheMTCwillnotexceedthelimitingvalues.ST.LUCIE-UNIT1B3/41-1 0'I4II