ML17309A914

Rev 0 to St Lucie Unit 2,Cycle 10 Colr.

ML17309A914
Person / Time
Site:	Saint Lucie
Issue date:	12/29/1997
From:	FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17309A912	List: ML17309A911 ML17309A913 ML17309A914 ML17309A915
References
NUDOCS 9801060191
Download: ML17309A914 (20)

Text

St.Lucie Unit 2 Docket No.50-389 Proposed License Amendment Core 0 eratin Limits Re ort COLR ENCLOSURE 1 to L-97-280 ST.LUCIE UNIT 2, CYCLE 10 CORE OPERATING LIMITS REPORT Revision 0+DDi060iVX 97<RRq PDR ADDCK 00000250'PDR Page 1 of 14 0~1 tl P Table of Contents Des ri ti n 1.0 Introduction 2.0 Core Operating Limits 2.1 Moderator Temperature Coefficient 2.2 CEA Position-Misalignment

>15 inches 2.3 Regulating CEA Insertion Limits 2.4 Linear Heat Rate 2.5 TOTAL PLANAR RADIAL PEAKING FACTORS 2.6 TOTAL INTEGRATED RADIAL PEAKING FACTOR 2.7 DNB Parameters

-AXIAL SHAPE INDEX~P'R cd 4" 2.8 Refueling Operations

-Boron Concentration 3.0'ist of Approved Methods 12 Ficlure~Titl List of Figures~Pa e 3.1-2 3.1-1a Allowable Time To Realign CEA vs.Initial F,T CEA Insertion Limits vs.THERMAL POWER 3.2-1 Allowable Peak Linear Heat Rate vs.Burnup 3.2-2 AXIAL SHAPE INDEX vs.Maximum Allowable Power Level 3.2-3 Allowable Combinations of THERMAL POWER and F,T, F~10 3.2-4 AXIAL SHAPE INDEX Operating Limits vs.THERMAL POWER 11 St.Lucie Unit 2 Cycle 10 COLR Rev 0 Page 2 of 14

1.0 INTRODUCTION

This Core Operating Limits Report (COLR)describes the cycle-specific parameter limits for operation of St.Lucie Unit 2 Cycle 10.It contains the limits for the following as provided in Section 2.Moderator Temperature Coefficient CEA Position-Misalignment

>15 Inches Regulating CEA Insertion Limits Linear Heat Rate TOTAL PLANAR RADIAL PEAKING FACTORS-F TOTAL INTEGRATED RADIAL PEAKING FACTOR-F, DNB Parameter-AXIAL SHAPE INDEX Refueling Operations

-Boron Concentration This report also contains the necessary figures which give the limits for the above listed parameters.

Terms appearing in capitalized type are DEFINED TERMS as defined in Section 1.0 of the Technical Specifications.

This report is prepared in accordance with the requirements of Technical Specification 6.9.1.11.St.Lucie Unit 2 Cycle 10 COLR, Rev 0 Page 3 of 14 2.0 CORE OPERATING LIMITS 2.1 Moderator Tem erature oefficien (TS 3.1.1.4)The moderator temperature coefficient (MTC)shall be less negative than-30 pcml'F at RATED THERMAL POWER.2.2 EA Position-Misali nmen>1 I ches (TS 3.1.3.1)The time constraints for full power operation with one full-length CEA misaligned from any other CEA in its group by more than 15 inches are shown in Figure 3.1-1a.2.3 Re ulatin EA I sertion Limits (TS 3.1.3.6)The regulating CEA groups shall be limited to the withdrawal sequence and to'the insertion limits shown on Figure 3.1-2, with CEA insertion between the Long Term Steady State Insertion Limits and the Power Dependent Insertion Limits restricted to: a.Less than or equal to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> per 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> interval, b.Less than or equal to 5 Effective Full Power Days per 30 Effective Full Power Days, and c.Less than or equal to 14 Effective Full Power Days per calendar year.2.4~DN 2 tTS 2.2.14 The linear heat rate shall not exceed the limits shown on Figure 3.2-1.The AXIAL SHAPE INDEX power dependent control limits are shown on Figure 3.2-2.During operation, with the linear heat rate being monitored by the E core Detector~Mi I t,th AXIANSNAPE INDEX h Ilh I t I d ttht th of Figure 3.2-2.During operation, with the linear heat rate being monitored by the Incore Detector~M>>t,th 2 IP D Ity I thtt hilt dt tdt less than or equal to the limits shown on Figure 3.2-1.St.Lucie Unit 2 Cycle 10 COLR Rey 0 Page 4 of 14 2.5 T TAL PLANAR RADIAL PEAKIN F TOR-F T (TS 3.2.2)The calculated value of F~T shall be limited to<1.75.The power dependent F T limits are shown on Figure 3.2-3.2.6 T L INTEGRATED RADIAL PEAKIN FA TOR-F (TS 3.2.3)The calculated value of F,T shall be limited to<1.70.The power dependent F, limits are shown on Figure 3.2-3.2.7 DNB Parameters

-AXIAL HAPE INDE (TS 3.2.5)The AXIAL SHAPE INDEX shall be maintained within the limits specified in Figure 3.2-4.2.8.efuelin 0 erations-Boron onc n ra io (TS 3.9.1)With the reactor vessel head closure bolts less than fully tensioned or with the head removed, the boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained uniform and sufficient to ensure that the more restrictive of the following reactivity conditions is met: a.Either a K,<<of 0.95 or less, or b.A boron concentration of greater than or equal to 1720 ppm.St.Lucie Unit 2 Cycle 10 COLR Rev 0 Page 5 of 14 0 I1 1~0 1.72 I.7 1.68 1.66~1.64 1.62 0 1.6 1.58 1.56 1.54 3'164 1.52 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 Time at Full Power to Realign CEA, Minutes FIGURE 3.1-1 a Allowable Time to Realign CEA vs.Initial F,T St.Lucie Unit 2 Cycle 10 COLR Rev 0 Page 6 of 14 O 111 G)O Q O I-9 y'Ig G)0)+lQ z ill 33 I U 0 33 i~~0.80 0.70 g oea I-m 0.60 I-040 C)z 0.30 C)I-020 0.Io C 0 c~0 a P g 8 Qg (.8 TEE Q, a o a jQ D g@C EEE P a 0 o c C5 g og C 0 2 fg~N (LL, g Q 5 a g 0 o 6 c I Ill I I I cl 0 j I'-I ni.:I Q P,I-I I al I ILONG TEAM"~-AIIOA'E TEAM sTEAOY srEAnv STATE SIATE INSEAT ION.INSEA I)ON llMlr llMI 2 C 0 2 c g 8 QL a IE OAOOI S~l 0 20 40 60 80 100 (1)6)(108.8)(81.6)

(5l.l)(27.2)(0)o 2o co en IN loo 0 20 co eo so Ioa (l)6)(IOS.S)(81.6)

(5l.l)(27.2)(0)(1)6)(108.8)(81.6)

(5l.l)(27.2)(0)0 20 40 M 80 100 0 20 40 60 80 100 (I)6)(108.8)(41.&)(5l.l)(27.2)(0)(1)6)(108.8)(81.6)

(5l.l)(27.2)(0)4 2 5 CEA INSE IITIAN (INCIIES CEA WIIIIDIIAWN)

~~~14 6)CC 13 CL 0)32.ACCEPTABLE

~r OPERATION.

UNACCEPTRBL'E OPERATION~~~BOL CYCLE LIFE EOL (Fuel+Clad+Moderator)

FIGURE 3.2-1 Allowable Peak Linear Heat Rate vs.Burnup St.Lucie Unit 2 Cycle 10 COLR Rev 0 Page 8 of 14 1.1 0 1 L o 0.9~0.8 E'0.7 X o 0.6 0 0.5 (-0.10,0.88)

(0.15,0.88)

ACCEPTABLE OPERATION REGION (-0.50,0.60)

(0.50,0.60)

UNACCEPTABLE OPERATION REGION 0.4-0.6-0.4-0.2 0 0.2 Peripheral AXIAL SHAPE INDEX 0.4 0.6 (Not Applicable Below 40%Power)FIGURE 3.2-2 AXIAL'SHAPE INDEX vs, Maximum Allowable Power Level St.Lucie Unit 2 Cycle)0 COLR Rev 0 Page 9 of 14 M I O e tO O O 0 C)O 0 I Zl Zl O C C)D ill Ql Q C)0 O 0 Q O O 2'D Q"0 vl Tl O C)gC g 33 mm 33~Q M I 0 0 Zl Q CL:n K Uj 0 CL CC IJI Cl ill I-CL 0 C 0 O lU LL 6$0 1.2 1.j 1 0.9 0.8 0.7 0.6 1.6~~~~~~I~~~~~~~~I I I UNACCEPTABLE OPER I I~ATIO I I (1.7, 1.0);(1 75,:1 I I:.I I I I I I 0.80 0)I I I~-I---:-I I-(1.7],.o.bO).'--

~~~1 (1.77, I I I REGION.I I I I I I..I.I I I Fr LIMIT'CURVE I CEP7ABLE.OPERATION.

C I~~~1.75 Measured F.8 1.7 N'R I I I I~(<.8'0:85)'I I I.~I~~I~I ECION-I--I I LIMIT C(JR VE e'a~=g

(-0.08,1.00)

(0.15,1.00) 0 0.9~0.8 I-CI I-0.7 CC 0 o 06 0.5 UNACCEPTABLE OPERATION REGION (-0.50,0.65)

ACCEPTABLE OPERATION REGION UNACCEPTABLE.

OPERATION REGION~(0.50,0.65) 0.4-0.6-0.4-0.2 0 0.2 0.4 Peripheral AXIAL SHAPE INDEX (Y1)0.6 (Not Applicable Below 40%Power)FIGURE 3.2-4 AXIAL SHAPE INDEX Oper'ating Limits vs.THERMAL POWER (Four Reactor Coolant Pumps Operating)

St.Lucie Unit 2 Cycle 10 COLR Rev 0 Page 11 of 14 "i*~i~g~-

3.0 LIST OF APPROVED METHODS The analytical methods used to determine the core operating limits are those previously approved by the NRC, and are listed below.WCAP-11596-P-A,"Qualification of the PHOENIX-P/ANC Nuclear Design System for Pressurized Water Reactor Cores," June 1988 (Westinghouse Proprietary) 2.3.4..NF-TR-95-01,"Nuclear Physics Methodology for Reload Design of Turkey Point 8 St.Lucie Nuclear Plants," Florida Power&Light Company, January 1995 (NRC SER dated June 9, 1995), 8 Supplement 1, August 1997 CENPD-199-P, Rev.1-P-A,"C-E Setpoint Methodology:

CE Local Power Density and DNB LSSS and LCO Setpoint Methodology for Analog Protection Systems," January 1986 CENPD-266-P-A,"The ROCS and DIT Computer Code for Nuclear Design," April 1983 5.6.7.8.9.10.12.CENPD-275-P-A,"C-E Methodology for Core Designs Containing Gadolinia-Urania Burnable Absorbers," May 1988 CENPD-188-A,"HERMITE: A Multi-Dimensional Space-Time Kinetics Code for PWR Transients,:

July 1976 CENPD-153-P, Rev.1-P-A,"Evaluation of Uncertainty in the Nuclear Power Peaking Measured by the Self-Powered, Fixed Incore Detector System," May 1980 CEN-123(F)-P,"Statistical Combination of Uncertainties Methodology Part 1: C-E Calculated Local Power Density and Thermal Margin/Low Pressure LSSS for Calvert Cliffs Units I and II," December 1979 CEN-123(F)-P,"Statistical Combination of Uncertainties Methodology Part 2: Combination of System Parameter Uncertainties in Thermal Margin Analyses for Calvert Cliffs Units 1 and 2," January 1980 CEN-123(F)-P,"Statistical Combination of Uncertainties Methodology Part 3: C-E Calculated Departure from Nucleate Boiling and Linear Heat Rate Limiting Conditions for Operation for Calvert Cliffs Units 1 and 2," February 1980 CEN-191(B)-P,"CETOP-D Code Structure and Modeling Methods for Calvert Cliffs Units 1 and 2," December 1981 Letter, J.W.Miller (NRC)to J.R.Williams, Jr.(FPL), Docket No.50-389, Regarding St.Lucie Unit 2 Cycle 10 COLR Rev 0 Page 12 of 14 C

13.14.15.16.17.Unit 2 Cycle 2 License Approval (Amendment No.8 to NPF-16 and SER), November 9, 1984 (Approval of CEN-123(F)-P (three parts)and CEN-191(B)-P)

CEN-371(F)-P,"Extended Statistical Combination of Uncertainties,".July 1989 Letter, J.A.Norris (NRC)to J.H.Goldberg (FPL), Docket No.50-389,"St.Lucie Unit 2-Change to Technical Specification Bases Sections'2.1.1 Reactor Core'nd'3/4.2.5 DNB Parameters'TAC No.M87722)," March 14, 1994 (Approval of CEN-371(F)-P)CENPD-161-P-A,"TORC Code, A Computer Code for Determining the Thermal Margin of a Reactor Core," April 1986 CENPD-162-P-A,"Critical Heat Flux Correlation for C-E Fuel Assemblies with Standard Spacer Grids Part 1, Uniform Axial Power Distribution," April 1975 CENPD-207-P-A,"Critical Heat Flux Correlation for C-E Fuel Assemblies with Standard Spacer Grids Part 2, Non-uniform Axial Power Distribution," December 1984 18.CENPD-206-P-A,"TORC Code, Verification and Simplified Modeling Methods," June 1981 19.20.21.22.23.24.25.26.27.CENPD-225-P-A,"Fuel and Poison Rod Bowing," June 1983 CENPD-139-P-A,"C-E Fuel Evaluation Model Topical Report," July 1974 CEN-161(B)-P-A,"Improvements to Fuel Evaluation Model," August 1989 CEN-161(B)-P, Supplement 1-P-A,"Improvements to Fuel Evaluation Model," January 1992 CENPD-132, Supplement 3-P-A,"Calculative Methods for the C-E Large Break LOCA Evaluation Model for the Analysis of C-E and W Designed NSSS," June 1985 CENPD-133, Supplement 5-A,"CEFLASH-4A, A FORTRAN77 Digital Computer Program for Reactor Blowdown Analysis," June 1985 CENPD-134, Supplement 2-A,"COMPERC-II, a Program for Emergency Refill-Reflood of the Core," June 1985 CENPD-135-P, Supplement 5,"STRIKIN-II, A Cylindrical Geometry Fuel Rod Heat Transfer Program," April 1977 Letter, R.L.Baer (NRC)to A.E.Scherer (CE),"Evaluation of Topical Report St.Lucie Unit 2 Cycle 10 COLR Rev 0 Page 13 of 14 i.r 4i 0 28.29.CENPD-135, Supplement

¹5," September 6, 1978 CENPD-137, Supplement 1-P,"Calculative Methods for the C-E Small Break LOCA Evaluation Model," January 1977 CENPD-133, Supplement 3-P,"CEFLASH-4AS, A Computer Program for the Reactor Blowdown Analysis of the Small Break Loss of Coolant Accident," January 1977 30.Letter, K.Kniel (NRC)to A.E.Scherer (CE),"Evaluation of Topical Reports CENPD-133, Supplement 3-P and CENPD-137, Supplement 1-P," September 27, 1977 31.32.33.34.35.36.37.38..39.CENPD-138, Supplement 2-P,"PARCH, A FORTRAN-IV Digital Program to Evaluate Pool Boiling, Axial Rod and Coolant Heatup," January 1977 Letter, C.Aniel (NRC)to A.E.Scherer (CE),"Evaluation of Topical Report CENPD-138, Supplement 2-P," April 10, 1978 Letter, W.H.Bohlke (FPL)to Document Control Desk (NRC),"St.Lucie Unit 2, Docket No.50-389, Proposed License Amendment, T han e f om-c o+/erg," L-91-325, December 17, 1991 Letter, J.A.Plorris (NRC)to J.H.Goldberg (FPL),"St.Lucie Unit 2-Issuance of Amendment Re: Moderator Temperature Coefficient (TAC No.M82517)," July 15, 1992 Letter, J.W.Williams, Jr.(FPL)to D.G.Eisenhut (NRC),"St.Lucie Unit No.2, 8 8 t~.88-888, 8 8 d tt 8 d t,~td," I=84-448.June 4, 1984 Letter, J.R.Miller (NRC)to J.W.Williams, Jr.(FPL), Docket No.50-389, Regarding'Unit 2 Cycle 2 License Approval (Amendment No.8 to NPF-16 and SER), November 9, 1984 (Approval of Methodology contained in L-84-148)Letter, A.E.Scherer Enclosure 1-P to LD-82-001,"CESEC-Digital Simulation of a Combustion Engineering Nuclear Steam Supply System," December 1981 Safety Evaluation Report,"CESEC Digital Simulation of a Combustion Engineering Steam Supply System (TAC No.: 01142)," October 27, 1983 CENPD-282-P-A, Volumes 1, 2, and 3, Supplement 1-P,"Technical Manual for the CENTS Code," March 1994 St.Lucie Unit 2 Cycle 10 COLR Rev 0 Page 14 of 14