ML14133A677

Vogtle, Unit 1 - Cycle 19 Core Operating Limits Report

ML14133A677
Person / Time
Site:	Vogtle
Issue date:	05/13/2014
From:	Pierce C R Southern Co, Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-14-0753
Download: ML14133A677 (16)

Text

CharlesR.PierceRegulatoryAffairsDirectorMAY132014DocketNos.:50-424SouthernNuclearOperatingCompany,Inc.40InvernessCenterParkwayPostOfficeBox1295Birmingham,AL35201Tel205.992.7872Fax205,992.7601U.S.NuclearRegulatoryCommissionATTN:DocumentControlDeskWashington,D.C.20555-0001VogtleElectricGeneratingPlantUnit1Cycle19CoreOperatingLimitsReportLadiesandGentlemen:NL-14-0753InaccordancewithTechnicalSpecification5.6.5.d,SouthernNuclearOperatingCompanysubmitstheenclosedCoreOperatingLimitsReport(COLR)forVogtleElectricGeneratingPlant(VEGP)Unit1Cycle19,Version1.ThislettercontainsnoNRCcommitments.Ifyouhaveanyquestions,pleasecontactKenMcElroyat(205)992-7369.Respectfullysubmitted.C.R.PierceRegulatoryAffairsDirectorCRP/GLS/

Enclosure:

CoreOperatingLimitsReport,VEGPUnit1Cycle19,Version1 U.S.NuclearRegulatoryCommissionNL-14-0753Page2SouthernNuclearOperatingCompanyMr.S.E.Kuczynski,Chairman,President&CEOMr.D.G.Bost,ExecutiveVicePresident&ChiefNuclearOfficerMr.T.E.Tynan,VicePresident-Vogtle1&2Mr.B.LIvey,VicePresident-RegulatoryAffairsMr.D.R.Madison,VicePresident-FleetOperationsMr.B.J.Adams,VicePresident-EngineeringMr.S.C.Waldrup,RegulatoryAffairsManager-VogtleRType:CVC7000U.S.NuclearRegulatoryCommissionMr.V.M.McCree,RegionalAdministratorMr.R.E.Martin,NRRSeniorProjectManager-Vogtle1&2Mr.L.M.Cain,SeniorResidentInspector-Vogtle1&2 VogtleElectricGeneratingPlantUnit1Cycle19CoreOperatingLimitsReportEnclosureCoreOperatingLimitsReport,VEGPUnit1Cycle19,Version1 VOGTLEELECTRICGENERATINGPLANT(VEGP)UNIT1CYCLE19COREOPERATINGLIMITSREPORTVersion1February2014 WestinghouseNon-ProprietaryClass3APPENDIXAVOGTLEELECTRICGENERATINGPLANT(VEGP)UNIT1CYCLE19COREOPERATINGLIMITSREPORT(COLR)Version1February2014 COREOPERATINGLIMITSREPORT.VEGPUNIT1CYCLE19FEBRUARY20141.0COREOPERATINGLIMITSREPORTThisCoreOperatingLimitsReport(COLR)forVEGPUnit1Cycle19hasbeenpreparedinaccordancewiththerequirementsofTechnicalSpecification5.6.5.TheTechnicalRequirementaffectedbythisreportislistedbelow:13.1.1SHUTDOWNMARGIN-MODES1and2TheTechnicalSpecificationsaffectedbythisreportarelistedbelow:3.1.1SHUTDOWNMARGIN-MODES3,4and53.1.3ModeratorTemperatureCoefficient3.1.5ShutdownBankInsertionLimits3.1.6ControlBankInsertionLimits3.2.1HeatFluxHotChannelFactor-Fq(Z)3.2.2NuclearEnthalpyRiseHotChannnelFactor-f'^ah3.2.3AxialFluxDifference3.9.1BoronConcentrationPage1of11 COREOPERATINGLMITSREPORT.VEGPUNIT1CYCLE19FEBRUARY20142.0OPERATINGLIMITSThecycle-specificparameterlimitsforthespecificationslistedinSection1.0arepresentedinthefollowingsubsections.TheselimitshavebeendevelopedusingNRC-approvedmethodologiesincludingthosespecifiedinTechnicalSpecification5.6.5.2.1SHUTDOWNMARGIN-MODES1and2(TechnicalRequirement13.1.1)2.1.1TheSHUTDOWNMARGINshallbegreaterthanorequalto1.30percentAk/k.2.2SHUTDOWNMARGIN-MODES3.4and5(Specification3.1.n2.2.1TheSHUTDOWNMARGINshallbegreaterthanorequaltothelimitsshowninFigures1and2.2.3ModeratorTemperatureCoefficient(Specification3.1.3)2.3.1TheModeratorTemperatureCoefficient(MTC)limitsare:TheBOL/ARO/HZP-MTCshallbelesspositivethan+0.7x10"^Ak/k/°Fforpowerlevelsupto70%RTPwithalinearrampto0Ak/k/°Fat100%RTP.TheEOL/ARO/RTP-MTCshallbelessnegativethan-5.50x10"^Ak/k/°F.'2.3.2TheMTCSurveillancelimitsare;The300ppm/ARO/RTP-MTCshouldbelessnegativethanorequalto-4.75X10-"Ak/k/°F.'The60ppm/ARO/RTP-MTCshouldbelessnegativethan-5.35x10"^Ak/k/°F.'where:BOLstandsforBeginningofCycleLifeAROstandsforAllRodsOutHZPstandsforHotZeroTHERMALPOWEREOLstandsforEndofCycleLifeRTPstandsforRATEDTHERMALPOWER'Applicableforfull-powerT-averageof584.1to587.1°F,Page2of11 COREOPERATINGLIMITSREPORT.VEGPUNIT1CYCLE19FEBRUARY2014ShutdownBankInsertionLimits(Specification3.1.5)2.4.1Theshutdownbanksshallbewithdrawntoapositiongreaterthanorequalto225steps.ControlBankInsertionLimits(Specification3.1.6)2.5.1ThecontrolrodbanksshallbelimitedinphysicalinsertionasshowninFigure3.HeatFluxHotChannelFactor-Fn/Zt(Specification3.2.1)2.6.1Fo(Z)<-5K(Z)for?>0.5Fo(Z)<-^K(Z)forP<0.5where:P=-THERMALPOWERRATEDTHERMALPOWER2.6.2F^'"'=2.502.6.3K(Z)isprovidedinFigure4.KiZ)2.6.4Fo(Z)<-2IlJ.forP>0.5P-W{Z)F^"^-KCZ)Fo(Z)<-^forP50.50.5-W^Z)2.6.5W(Z)valuesareprovidedinTable2.2.6.6TheFq(Z)penaltyfactorsareprovidedinTable1.Page3of11 COREOPERATTNGLIMITSREPORT.VEGPUNIT1CYCT.F.192.7NuclearEnthalpyRiseHotChannelFactor-F(Specification3.2.2)2.7.1SFi"(I+where:P=THERMALPOWERRATEDTHERMALPOWER2.7.2F^'-=\.652.1.3PF^=0.3FEBRUARY2014AxialFluxDifference(Specification3.2.3)2.8.1TheAxialFluxDifference(AFD)AcceptableOperationLimitsareprovidedinFigure5.BoronConcentration(Specification3.9.1)2.9.1Theboronconcentrationshallbegreaterthanorequalto1880ppm.^^Thisconcentrationboundstheconditionofkeii^0.95(allrodsinlessthemostreactiverod)andsubcriticality(allrodsout)overtheentirecycle.ThisconcentrationincludesadditionalborontoaddressuncertaintiesandB'depletion.Page4of11 COREOPERATINGLIMITSREPORT.VEGPUNIT1CYCLE19Table1Fq(Z)penaltyfactorCycleBumup(MWD/MTU)Fq(Z)PenallyFactor1.03481.03911.04171.04231.04101.03661.03081.02481.02001.02001.02041.02621.02611.02441.02141.0200FEBRUARY2014Notes:1.ThePenaltyFactor,tobeappliedtoFq(Z)inaccordancewithSR3.2.1.2,isthemaximumfactorbywhichFq(Z)isexpectedtoincreaseovera39EFPDinterval(surveillanceintervalof31EFPDplusthemaximumallowableextensionnottoexceed25%ofthesurveillanceintervalperSR3.0.2)startingfromthebumupatwhichtheFq(Z)wasdetermined.2.Linearinterpolationisadequateforintermediatecyclebumups.3.Forallcycleburnupsoutsidetherangeofthetable,apenallyfactorof1.020shallbeused.Pagesof11 COREOPERATINGLIMITSREPORT.VEGPUNIT1CYCLE19AxialPoint57-61Elevation(feet)12.072-11.26711.06610.86510.66410.46210.26110.0609.8599.6589,4569.2559.0548.8538.6528.4508.2498.0487.8477.6467.4447.2437.0426.8416.6406.4386.2376.0365.8355.6345.4325.2315.0304.8294.6284.4264.2254.0243.8233.6223.4203.219 3.0182.8172.6162.4142.2132.0121.8111.6101.4081.2071.0060.805-0.000Table2RAOCwrz)150MWD/MTU1.00001.3172131621.30181.28081.26151.24671.25031.2444L23731.22781.21681.20201.18931.19001.18891.19181.19401.19351.19141.18671.18021.17241.16331.15291.14521.14011.13441.13211.13091.13171.13861.14771.15611.16401.17101.17701.18261.18721.19251.19851.20571.21901.23371.24761.26161.27551.28931.30241.31491.32691.33801.00003000MWD/MTU1.00001.34951.34401.33501.31671.29121.26831.24311.21301.19791.18931.17631.166Z1.16701.17241.17611.17831.17801.17611.1728I.I6741.16041.15231.14591.13931.13261.12791.12521.12251.1258 1.13781.14841.15871.16831.17751.18561.19301.19941.20651.21591.22411.23771.25621.27941.30581.33281.35951.38581.41051.43361.45501.4742l.OOOOTopandBottom5PointsExcludedperTechnicalSpecificationB3.2.1.12000MWD/MTU1.00001.32791.32441.3164I.30S11.29191.27751.26141.24381.23841,2286 1.21651.20921.21411.22301.22901.23321.23441.23361.23151.22591.21781.20831.19881.18961.18011.16961.16081.15601.15901.16431.17061.17531.17901.18151.18291.18331.18221.1795 1.17631.1722I.I7651.18891.20201.21491.22791.23991.25141.26271.27371.28431.29431.0000FEBRUARY20420000MWD/MTU1.00001.27281.26651.25611.24381.22941.21891.2150IJi0961.21441.22721.23591.23971.24261.24381.25001.25911.26701.28001.28951.29441.29501.29311.28901.28191.27191.25961.24781.24001.23491.23491.23481.23441.23331.23021.22541.21911.21001.19851.18611.17651.17761.18901.20191.21471.22751.23861.24911.26011.27141.28281.2945l.OOOOTheseW(Z)valuesareconsistentwithFigure5,andarevalidovertlieHFPTavgtemperaturerangefrom584.1to587.1°F.Page6of11 COREOPERATINGLIMITSREPORT.VEGPUNIT1CYCLE19FEBRUARY2014FIGURE1REQUIREDSHUTDOWNMARGINFORMODES3AND4(FOURLOOPSFILLEDANDVENTEDANDATLEASTONEREACTORCOOLANTPUMPRUNNING)"S3-°O2.0gmACCEPTABLEOPERATINGREGION(2400,3.lb)IREQUIREDSHUTDOWNMARGIN(lioo,i.2b)UNACCEPTABLEOPERATINGREGION(65d,1.3^0)50010001500RCSBORONCONCENTRATION(ppm)Page?of11 ACCEPTABLEOPERATINGREGIONREQUIREDSHUTDOWNMARGINRCSBO1250,a.8B)0200N(ppm)(2$00Li.9phPage8of COREOPERATINGLIMITSREPORT.VEGPUNIT1CYCLE19FEBRUARY2014FIGURESRODBANKINSERTIONLIMITSVERSUS%OFRATEDTHERMALPOWER(FullyWithdrawn)S180111h160mS<S140O120HHWg100<<80iiisaiaiaiyiigBSgS^^SSSS'Se'SSSSSSSSSSSSSSSSSSSI!i3:sBwmmmumuutS3BaianmHHHB>0304050607080POWER(%ofRatedThermalPower)*FullywithdrawnshallbetheconditionwherecontrolrodsareatapositionwithintheintervalS225and<231stepswithdrawn.NOTE:TheRodBankInsertionLimitsarebasedonthecontrolbankwithdrawalsequenceA,B,C,Dandacontrolbanktip-to-tipdistanceof115steps.Page9of11 COREOPERATINGLIMITSREPORT.VEGPUNIT1CYCLE19oO0.6FEBRUARY2014FIGURE4K(Z)-NORMALIZEDFq(Z)ASAFUNCTIONOFCOREHEIGHTFQ=2.50COREHT.K(Z)0.001.006.001.0012.0.92546COREHEIGHT(feet)Page10of11 COREOPERATINGLIMITSREPORT.VEGPUNIT1CYCLE19FEBRUARY2014FIGURE5AXIALFLUXDIFFERENCELIMITSASAFUNCTIONOF%RATEDTHERMALPOWERFORRAOCrt80<u^70dP50(+10,100)UNACCBPTMLE(-30,50)-40-30-20-100102030AXIALFLUXDIFFERENCE(percentAl)PageIIOfII