ML17223A299

St Lucie Unit 2,Cycle 5 Startup Physics Testing Rept. W/ 890821 Ltr

ML17223A299
Person / Time
Site:	Saint Lucie
Issue date:	08/21/1989
From:	WOODY C O FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
L-89-304, NUDOCS 8908280181
Download: ML17223A299 (19)

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gcCELEBRATEDD1STRIBUTl0EMONSTRAT104SYSTEMREGULRTCINFORMATIONDISTRIBUTIONIISTEM(RIDE)-'ACCESSIONNBR;.8908280181DOC.DATE:89/08/21NOTARIZED:NOFACIL:50-389St.LuciePlant,Unit2,FloridaPower6LightCo.AUTH.NAME'UTHORAFFILIATIONWODDYFC.O.FloridaPoweraLightCo.RECIP.NAMERECIPIENT-AFFILIATIONDocumentControlBranch(DocumentControlDesk)

SUBJECT:

"StLucieUnit2,Cycle5StartupPhysicsTestingRept."W/890821ltr.DOCKETI05000389DISTRIBUTIONCODE:IE26DCOPIESRECEIVED:LTRtENCLlSIZE:/4TITLE:StartupReport/RefuelingReport(perTechSpecs)NOTES:RECIPIENTIDCODE/NAMEPD2-2LANORRISFJINTERNAL:ACRSNRRCHATTERTONG02H2DRSS/EPRPBEXTERNAL:LPDRNSICCOPIESLTTRENCL102255111111111l.RECIPIENTIDCODE/NAME.PD2-2PDIRMTECHADVNUDOCS-ABSTRACTRGN2FILEOlNRCPDRCOPIESLTTRENCL1111111111hRIDNOTE'IOALL'KIDS>>RECIPZERISPIZASEHELPUS'TOREDOCETATE!CONI'AC1'IHEDXXMWI'2GK)LDESK,KXMPl-37(EXT.20079)K)ELBC2QXRYOURNAMEPBCHDISTRIKTZIQNLISTSFORDOCUMENISYOUDOHITNEZDtTOTALNUMBEROFCOPIESREQUIRED:LTTR18ENCL17 P.O.Box14000,JunoBeach,FL33408-0420AUGUST.211989L-89-30410CFR50.36U.S.NuclearRegulatoryCommissionAttn:DocumentControlDeskWashington,D.C.20555Gentlemen:Re:St.LucieUnit2DocketNo.50-389StartuPhsicsTestinReortInaccordancewithSection6.0,AdministrativeControls,viz.,Sections6.9.1.1,6.9.1.2and6.9.1.3oftheSt.LucieUnit2TechnicalSpecifications,FloridaPower&LightCompanysubmitstheSt.LucieUnit2,Cycle5StartupPhysicsTestingReport.Pleasecontactusifthereareanyquestionsconcerningthissubmittal.Verytrulyyours,+,d~~C.O.WooyActingSeniorVicePresident-NuclearCOW/MSD/gpAttachmentcc:StewartD.Ebneter,RegionalAdministrator,RegionII,USNRCSeniorResidentInspector,USNRC,St.LuciePlant8908280185890822PDRADQCK0500038'rrPPNUoofP'roupcompoor St.LucieUnit2,Cycle5StartuPhsicsTestinReort I'

St.LucieUnit2,Cycle5StartuPhsicsTestinReortTableofContentsSectionTitleIIIIIIIVVVIVIIIntroductionFuelDesign/CoreLoadApproachtoCriticalityZeroPowerPhysicsTestingPowerAscensionProgramSummaryReferencesListofFiuresFiureNo.Title12345678CoreLoadPatternInverseCountRateRatioPlotChannel1InverseCountRateRatioPlotChannel2BoronConcentrationvs.DilutionTimePowerDistribution257.PowerPowerDistribution,507PowerPowerDistribution807PowerPowerDistribution1007.PowerListofTablesTableNo.TitleCycle'ReloadSub-BatchID-ApproachtoCriticalitybyDilutionCEAWorthSummary St.LucieUnit2,Cycle5StartuPhsicsTestinReortI.Introduction-"Theintentofthisreportistoprovideadescriptio'nofthefueldesign,coreloadandasummaryofthestartupphysicstestingandpowerascensionprogramperformedafterthecompletionofthecorereload.Performingthestartupphysicsandpowerascensiontestingvalidatesimportantcoreparameters(asdescribedintheANSIstandard19.6.1).Themajorpartsofthetestingprogramareasfollows:1)InitialCriticality2)ZeroPowerPhysicsTesting3)PowerAscensionTestingII.FuelDesin/CoreLoadTheCycle5coreconsistsofCombustionEngineeringfuel.Thereare217fuelassembliesutilizedintheSt.LucieUnit2core.Thecoreloadforcycl'e5consistedof80freshBatchGassemblies,76BatchFassemblies,57BatchEassemblies,and4BatchDassemblies.Afurtherbreakdownofdistinctsub-batchesiscontainedinTablel.TwoBatchDassemblies(D006,D008),threeBatchEassemblies(E013,E004,E037)andtwoBatchFassemblies(F031,F020)werereconstitutedandcertifiedbyCombustionEngineeringasreusable.TheBatchGassembliesarethefirstdebrisresistantdesigntobeusedatSt.LucieUnit2.Debrisresistancewasachievedbylengtheningthelowerendcapfrom0,641to3.370inches.Toaccomplishthischangeandstillmaintaintheactivefuellength,thefollowingspecificchangesweremade:1.Theupperplenumlengthwasreducedfrom7.858to5.829inches.Tomaintainplenumvolume,theplenumspringwasredesigned.2.Theoveralllengthofthefuelrodwasincreasedfrom146.199inchesto146.899inches.3.Theheightofthelowerendfittingwasreducedby0.700inchestocompensateforthelongerfuelrodsandpreserveshouldergap.

St.LucieUnit2,Cycle5StartuPhsicsTestinReortTheregionGfuelassembliespreservetheactivefuellength,plenumvolume,andthe2.147inchshouldergap.BatchGassembliesprovideincreaseddebrisresistancewithlongersolidlowerendcapswhilestillbeingcompatiblewithotherCEassemblies.TheCycle5coreloadingmapisrepresentedinFigure1.TheassemblyserialnumbersandControlElementAssemblyIDnumbersaregivenforeachcorelocation.FollowingthefuelshuffleandpriortotheapproachtocriticalityCEAdroptestswereperformed.Theobjectiveofthist'estwastomeasurethetraveltimefromthefullywithdrawnposition(UEL)tothe,907insertedpositionunderhotfullflowconditions,aswellastoverifycorrectoperationoftheCEApositionindicationsystem.TheaverageCEAdroptimewasfoundtobe2.74'secondswithamaximumandminumumtimeof2.92secondsand2.56secondsrespectively,AlldroptimeswerewithintherequirementsofTechnicalSpecification3.1.3.4.III.AroachtoCriticalitTheapproachtocriticalitywasinitiatedbydilutingfromanon-criticalBoronconcentrationof2022ppmtoapredictedcriticalBoronconcentrationof1659ppm.InversecountrateratioplotsweremaintainedduringthedilutionprocessandareshowninFigures2&3.AplotofBoronconcentrationversusdilutiontimeisprovidedinFigure4.Table2delineatesthedilutionrate,initialandfinalBoronconcentrations,andelapsedtimes.InitialCriticalityforSt.LucieUnit2Cycle5wasachievedat2225onApril23,1989withCEAGroup5at55incheswithdrawnandallotherCEAsfullywithdrawn.IV.ZeroPowerPhsicsTestinThetestsperformedduringtheZeroPowerTestingPrograminclude:1.ReactivityComputerCheckout2.UnroddedCriticalBoronConcentration3.ModeratorTemperatureCoefficientMeasurement4.CEAworthmeasurmentsThesetestsareperformedinaccordancewiththeANSIstandard19.6.1,includingacceptancecriteriaunlesssupercededbyTechnicalSpecifications.

St.LucieUnit2,Cycle5StartuPhs'icsTestinReortThereareseveralchecksdonetoensureproperfunctioningoftheReactivityComputer.TheReactorpowerlevel/fluxisadjustedsuchthatalltestingisconductedabovethenoiselevelandbelowthepointofaddingnuclearheat.Furtherverificationoftheproperoperationofthereactivitycomputerwasaccomplishedthroughmeasuringboththepositiveandnegativereactorperiodsbyaddingknownamountsofpositiveornegative,reactivity.CThemeasuredunroddedCriticalBoronConcentrationwasdeterminedtobe1705ppm.ThepredictedunroddedCritical'oronConcentrationwas1687ppm.Themeasuredvaluewaswellwithinthe+100ppmofthepredictionacceptancecriterion.TheARO,HZPModeratorTemperatureCoefficientwascalculatedfrommeasureddata,tobe3.65pcm/oF,ThissatisfiesTech.Spec.3.1.1.4a.whichrequiresthattheMTCshallbelesspositivethan5pcm/oF.ThemeasuredMTCwasalsowellwithinthelimit'f+2pcm/oFofthedesignMTCvalueof3.37pcm/oF.TheRodWorthmeasurementswereperformedemployingtheRodSwapmethodology.TheintegralworthoftheReferenceBank,CEAgroupB,wasdeterminedbyboration/dilution.TheintegralworthsofthetestgroupsweredeterminedbyexchangewiththeReferenceBank.AcomparisonofthemeasuredanddesignCEAgroupintegralworthsisprovidedinTable3.Thefollowingacceptancecriteriaforrodworthmeasurementsweremet.1.ThemeasuredvalueofeachtestCEAgroupworthsiswithin+15Kor+100pcmofthedesignworth,whicheverisgreater.2.ThemeasuredworthoftheReferenceGroupandthetotalworthforalltheCEAgroupsmeasurediswithin+107.ofthetotaldesignworth.V.PowerAscensionFluxmapsfromthefixedincoredetectorsystemswereusedtoverifytheabsenceofabnormalitiesinthecorepowerdistribution,peakingfactors,andtiltatthe25,50,80,andgreaterthanorequalto98percentpowerplateaus.NuclearanddeltaTpowercalibrationsandamanualcalorimetriccheckwereperformedateachofthepowerplateaus.AsummaryoftheresultsofthefluxmappingateachpowerlevelisgiveninFigures5,6,7,and8.

St.LucieUnit2,Cycle5StartuPhsicsTestinReortVI.~Summa'llTechnicalSpecificationsweresatisfied.VII.References1.CELetterF2-CE-R"312,E.L.TrapptoH.A.Barth,datedMarch10,19892.CELetterF2-CE-R-313,E.L.TrapptoH.A.Barth,datedMarch17,19893.CELetterF2-CE-R-320,E.L.TrapptoH.A.Barth,datedMay9,19894.CELetterF2-CE-R-321,E.L.TrapptoH.A.Barth,datedMay9,19895.St.LucieUnit2TechnicalSpecifications tSt.LucieUnit2,CycleStartuPhsicsTestinReFIGURE1St.LucieUnit2Cycle5CoreMapYXXIIIYT8RPNIILKJH6FEDC8AIIIIIIIIE40E69E05E3820171514131P1110687E34E03S-lE71E5260560762538F0662742609613EGBE18E0762185623F2716'F2364179F03E1243F4364765F60E3391F4165312F15E1913F2965132629F2533EO663193E20Esl601619F1917F1863750F21E2574E2466339672F4922F51644626740011ilF7365414876F7559E2166070F31E264F3666536633F3354E55611602617F1629FOBF38F617287Ei1668E3245680F576702061F53643D0067E65F54F139071F59649f4046F12F39E512464F63655F45E67F70F04849FGB661000115678F676795719E16666E3531F07F48F64592614635F015581825F37639496483F4666273F6866735F4763651603604FioF2075E066404467123E22F5664534E72F5095F6265966F05000856F6665718EBBF7689F7264253669E2860E0463830FOBF3426615'16E49620E108F1762286F22F2876E2764648673E1521F5265210675E3641F7465869677E1458E2366468F32F266F3563294634E1363E45E17624E5928F24606F0260867F4462678F65Fl188F42628F1481052F30612630E5037EOBE29E70EoiS"2E31E30E02E66E39INSERTID80BATCH876BATCHF57BATCHE4BATCHD St.LucieUnit2,Cycle5artuPhsicsTestinReortFigure2ICRRPIotStortupChonnel1O.Q0.60.70.80J5OA040,1204060NIutlonTlnw(mlnutee)Figure3ICRRplotStortupChonn42O.Q0Jh0.7O.a04OAOAOD0.1NylonTlnw(aQrahes)

St.LucieUnit2,Cycle5SrtuPhsicsTestinReortFigvre4BoronConoentratfonveMuthn11m'04050NuthnTime(mhutee) tSt.LucieUnit2,Cycle5StartuPhsicsTestinReorFIGURE5PowerDistribution25ZPower'easured:(CECOR/INPAX)SnapshotID/IC042889Powerlevel29.48ZBurnup0.10EFPHCEAPosition122Design:Powerlevel25.007Burnup.,5.00EFPHCEAPOSITION122%TILT=.031FxyT=1.745FT1.684F=2.3150.7533',0'270$$+0~0263$34$$12067$0'842$$1'300$0.9660$',-0'233',+0.0182',32'3,420'0'716,'.0947',08050$0'470$10830$$+0~0370$+0~0246$+0~0117$29'0'1',13292$10370$12968$09155$13190$1~0080$1~3040$0~9060$',+0.0102',+0'290',-0'072$+0~0095',25'6'728$$1.1946$1.0001$1.3154$1.0682$1.2326$11580$0~9640$12950$1~0430$12500$)+00366$+00361$+0~0204$+00252$0~0174$2021'223"24$$1~1249$1.2157$1.4600$0.9841$1.2991$0.8127$11240$11730$14440$09390$12980$0'320$',+0'009',+0'427',+0'160',+0'451I+0~0011,'-0'193,'4'5'6'7'8'9,'~4104$11370$12045$12148$1~0740$0~9398$03930$11420$11920$11860$10560$0~9160$$+0~0174$00050$+00125(+90288$+0~0180$+0~0238$80'l'2'3564$09946$12762$11953$0'310$03530$0'880$12370$11970$09270$$+0~0034$+0~0066$+0~0392$0~0017$+0~0040$5'$0.3243$0.3452$03070$0'310$$+0~0173$+0~0142$KEYMEASUREDDESIGN,'DEVIATION(Xi),$$RMSDEVIATION=2.2737"TechnicalcificationLimitingConditionforOperation(LCO)3.2.4statesthattheAzimuthalPowerTilt7Tq)shaLlnotexceed.030.LCO3.2.4ACTIORa.requiresthatonceTqisdeterminedtobe).030but(.10eithercorrectTqvithin2hoursordeterminevithinthenext2hoursandatleastoncepersubsequent8hoursthatthecorepeakingfactorsarevithintheTechnicalSpecificationlimits.AnincoredetectorsnapshotvascompletedapproximateIy1hourafterexceedingtheTqlimitof.030.ThenevcalculatedTqvas.012.AdditionalIy,bothofthecorepeakingfactorswerewithin'heTechnicalSpecificationlimits.Minorvariationsincorephysicsparameterscanbeexpectedduringlovpovertestingfollowingarefueling.

tSt.LucieUnit2,Cycle5StartuPhsicsTestinReor~FIGURE6PowerDistribution507PowerMeasured:(CECORIINPAX)SnapshotID//Fp43p89Powerlevel50.00XBurnup7.43EFPHCEAPosition122".Design:Powerlevel50.007.Burnup10.00EFPHCEAPOSITION122TILT=.014Fzy1s692FrT=1.635F=2.0820~7769(I0.76QQ',0.0169I34II1.2407i1.0197(I1.2630i1.0000(00223(+0'197(32'3552i09937i11264i08300(09770(11130(',+0~0252',+4.0167',+0~013429'0'1',1.3329(1.0473(1.3210(0.9424(13260(1'280(1'240(0'280',+0.0069',+0.0193',-0.0030',+0'144'I25262728(1.1793i0.9952'1.3223',1.0813,'.2567',11520(09680i13020(1'590(12660(',+0.0273',+0.0272,'+0.0203,'+0.0223,'"0.0093(20(2-I22(23(24il11071(11841(14433(0'852(1'088(08301(1.1050,'.1570',1.4230',0.9400,'.'3000',0.8440,'+0002li+0~0271i+00203i+00452i+0~0088i"0'139i141516171819(I0.4030(1.1155I1.1856(1.198811.0699(0.9441(03910(11200(11700(11700(10480(0~9200((+00120(00045(+00156(+0~0288(+00219(+0~0241(9(1PI0~3530(09736(12390I11816(09350(0.3520'0'660'1.2070'1.1770'0'200',',+0F0010',+0.0076,'+0.0320',+0~0046',+0~0150,'3(4(5(6(7(I0.3177'0.3434,'.3070'0'320(i+00107I+0~0114(MEASUREDDESIGN,'DEVIATION(Xi)',IIIIRMSDEVIATION=1.9347.

St.LucieUnit2,Cycle5PhsicsTestinReort~FIGURE7PowerDistribution80ZPowerMeasured:(CECOR/INPAX)SnapshotID/IC050289.DATPowerlevel78.93ZBurnup40.45EFPHCEAPosition135Design:Powerlevel80.00ZBurnup30.00EFPHCEAPOSITION131TILT=.013Fxy1646FrT=1.581F=1.9670'072(07960(I0.0112II34I12856'0385'2980'0360'~0124~+00025/32'3'8673054i11355670(10100(11460))+00003(0.0046J0~0105(29'0'1157)10252(1'202)09423)I1.3300I1.0490I1.3440i0.9510I,'-0'143,'-0'238',-0.0238',-0'087'5'6'7'8',1.1373I0.9676I1.2907I1.0732I1.2529I1.1460'0.9720'1.3080'1.0740'1.2810,087)0'044(0F0173(0F0008(00281)2021222324(10731<11206i1'827i0'442<12878'8532'0930)11400)13990(0'410)13000(08580(-'-00199'"00194'-0.0163,'+0.0032',"0.0122,'-0.0048'4'5'6'7'8'9'3887i10644i1.1331<11506'~0470i09301'3900(10960(11460(11520)10450(09330(',-0'013',-0.0316,'"0'129',-0.0014,'+0'020'-0.0029'8I9I10I]]I121]3II0.3402I0.9292I1.178011.1518I0.9198II0.3490I0.9400I1.1730'I1.1550I0.9140100088(0~0108f+00050(0~0032~+0~0058I3I415I6I7II03038(03333(0~3060)03330)00022i+0~0003(MEASUREDDESIGN(DEVIATION(Xi)tIIIIRMSDEVIATION=1.293Z St.LucieUnit2,Cycle5tartuPhsicsTestinReort~FIGURE8PowerDistribution1007PowerMeasured:(CECOR/INPAX)SnapshotID//A051189Powerlevel99.70KBurnup209.01EFPHCEAPosition135Design:Powerlevel100.007Burnup75.00EFPHCEAPOSITIONaroTILT=.012Fzy1o631FT1551Fq=1.875i0.8234I0~8220ii+00014iI34I13241i10633iI1.3210I1.0610Ii+0'031i+00023i32'3'0.8923I1.0288I1.1646i0'880i'10330i11680ii+00043i00042ii0'034ii29'0'1,'~3456i10706i13469i0'633i13360i10630i13550i09660i',+0.0096',+0.0076',-0F0081',-0.0027',25'6'7'8'1489ii09977',1.3174',1.0794',1.2781',11420i09740i1~3110i10840i1~2890iI+0~0069I+0.0237I+0.0064I-0~0046I-0.0109I2021222324i1.0793'1.1414,'.4061'0.9457,'.2949,'.8635i1.0810i1.1300i13840i0'420i12990i0'660i0'017i+0~0114i+00221i+0~0037i0'041i00025i141516171819i0'966i10856i11509i11495i10354i0'353i03890i10800i11310i11310i10430i09390ii+0~0076i+0~0056i+00199i+00185i00076i00037i8910111213i0'535,'.9359i1.1671'1.1476,'.9203i0'480'0'25o'1.1520'1.1410'0.9110',i+0'055i+0~0109i+0~0151i+0~0066i+0~0093iI3I4I5I6I7II0~3270i03432i03050i03350ii+0'220i+0~0082iMEASUREDDESIGNiDEVIATION(Xi)',1IIIRMSDEVIATION=1.0427 St.LucieUnit2,Cycle5StartuPhsicsTestinReorTable1Cycle5ReloadSub-BatchIDSub-batchfafAssembffeaDO3.65E10E20E2LE2H8-281293.203.603.603.60F328F360F364FZ8G1HG20G2LGZH28162012-121620323.203.603.603.60/3.203.604.004.004.00/3.60

St.LucisUnit2>'ycle5StartuPhsicsTestinReorTable2ApproachtoCriticalitybyDilutionDllutfonRate(gpm)lnltlalBoronConc.(ppm)FlnolBoronConc.(ppm)DllutfonT1m>>(min.)20225388170540Table3CEAWorthSummaryTeatOroupS(Ref.)2AM>>aauredWorthpe(M)111%3315223337.37d1.33727~Pr>>dict>>dWorthpcm(D)1$57A2200.7354.0531.I57$h.OII05.81727XDN>>rene>>((D-Ll)/u)100.31.822.82.9810.70.858043.28