ML081370027

Core Operating Limits Report (COLR) Catawba Unit 2 Cycle 16, Revision 3

ML081370027
Person / Time
Site:	Catawba
Issue date:	05/12/2008
From:	Morris J Duke Energy Carolinas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CNEI-0400-149, Rev 3
Download: ML081370027 (34)

Text

Duke Energy Carolinas JAMES R. MORRIS, VICE PRESIDENT Duke Energy Carolinas, LLC Catawba Nuclear Station / CN01 VP 4800 Concord Road York, SC 29745 803-831-4251 803-831-3221 fax May 12, 2008 U.S. Nuclear Regulatory Commission ATTENTION:

Document Control Desk Washington, D.C.

20555-0001

Subject:

Duke Energy Carolinas, LLC.

Catawba Nuclear Station Unit 2 Docket No.: 50-414 Core Operating Limits Report (COLR)

Catawba Unit 2 Cycle 16, Revision 3' Attached, pursuant to Catawba Technical Specification 5.6.5, is an information copy of revision 3 of the Core Operating Limits Report for Catawba Unit 2 Cycle. 16.

This letter and attached COLR do not contain any new commitments.

Please direct any questions or concerns to Marc Sawicki at (803) 701-5191.

Sincerely, James R. Morris Attachment 40101 www. duke-energy. corn

U.

S. Nuclear Regulatory Commission May 12, 2008 Page 2 xc:

(w/att)

Luis A.

Reyes, Region II Administrator U.S. Nuclear Regulatory Commission Sam Nunn Atlanta Federal Center, 23 T85 61-Forsyth St.,

SW Atlanta, GA 30303-8931 J.

F.

Stang, Jr., Senior Project Manager U.S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop 8 G9A Rockville, MD 20852-2738 A.

T.

Sabisch Senior Resident Inspector U.S. Nuclear Regulatory Commission Catawba Nuclear Station

U.

S.

Nuclear Regulatory Commission May 12, 2008 Page 3 bxc:

(w/att)

RD Hart MJ Sawicki AR James BL Aldridge NCMPA-1 SREC PMPA NCEMC RGC Master, File ELL

,CNO1RC CN01RC EC08G CNS01SA Date File CN-801.01 ECO5O

CNEI-0400-149 Page 1 of 32 Revision 3 Catawba Unit 2 Cycle 16 Core Operating Limits Report Revision 3 May 2008 Duke Power Company

.Prepared By:

Checked By:

Checked By:

Approved By:

-i4jJArjry Date f9 QA Condition 1 The information presented in this report has been prepared and issued in accordance with Catawba Technical Specification 5.6.5.

CNEI-0400-149 Page 2 of 32 Revision 3 INSPECTION OF ENGINEERING INSTRUCTIONS R C -ý4, Date:

Inspection Waived By:

(Sponsor)

V CAIAWBA Inspection Waived MCE (Mechanical & Civil)

T Inspected By/Date:

RES (Electrical Only) we Inspected By/Date:

RES (Reactor)

Inspected By/Date:

MOD Inspected By/Date:

Other (

)

D Inspected By/Date:

OCONEE Inspection Waived MCE (Mechanical & Civil) 0 Inspected By/Date:

RES (Electrical Only)

U Inspected By/Date:

RES (Reactor)

[

Inspected By/Date:_

MOD U

Inspected By/Date:

Other (

0 Inspected By/Date:

MCGUiRE Inspection Waived MCE (Mcchanical & Civil) 0 Inspected By/Date:

RES (Electrical Only) 0 Inspected By/Date:_

RES (Reactor)

U Inspected By/Date:

MOD U

Inspected By/Date:

Other (

I)

U nspected-By/Date:

CNEI-0400-149 Page 3 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Implementation Instructions for Revision 3 Revision Description and PIP Tracking Revision 3 of the Catawba Unit 2 Cycle 16 COLR contains limits specific to the reload core and was revised to include limits specific for completion of the RCCA movement test for all shutdown banks for the remainder of Catawba Unit 2 Cycle 16. Revision 3 was initiated by PIP

1. C-08-01 112, CA#5.

Implementation Schedule Revision 3 may become effective immediately but must become effective prior to 5/09/2008.

This date is the next scheduled quarterly RCCAmovement test via PIP #C-08-01112, CA#5. The Catawba Unit 2 Cycle 16 COLR will cease to be effective during No MODE between Cycle 16 and 17.

Data files to be Implemented No data files are transmitted as part of this document.

CNEI-0400-149 Page 4 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report REVISION LOG Revision 01 1

2 3

Effective Date September 2007 February 2008 April 2008 May 2008 COLR C2C16 COLR rev. 0 C2C16 COLR rev. 1 C2C16 COLR rev. 2 C2C16 COLR rev. 3 Insertion/Deletion Instructions

[

Remove pages 1-32, of rev 2, Insert pages 1-32 of rev 3 I

I

CNEI-0400-149 Page 5 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 1.0 Core Operating Limits Report This Core Operating Limits Report (COLR) has been prepared in accordance with the requirements of Technical Specification 5.6.5. The Technical Specifications that reference this report are listed below:

TS COLR COLR Section Technical Specifications COLR Parameter Section Page 2.1.1 Reactor Core Safety Limits RCS Temperature and Pressure 1

2.1 9

____Safety TLmt 3.1.1 i ShutdownMargin Shutdown Margin 2.2 9

3.1.3 Moderator Temperature Coefficient MTC 1

2.3 11 3.1.4 Rod Group Alignment Limits Shutdown Margin 2.2 9

3.1.5 Shutdown Bank Insertion Limit Shutdown Margin 1 2.2 9

Rod Insertion Limits.

2.4 11 3.1.6 Control Bank Insertion Limit Shutdown Margin 1 2.2

-9 iRod Insertion Limits 2.5 15 3.1.8 Physics Tests Exceptions Shutdown Margin 2.2 9

3.2.1 HeatFlux Hot Channel Factor FQ 2.6 15 29 2

IAFD

..8 i21 OTAT 2.9 1

24

_"__Penalty Factors 2.6 15 3.2.2 Nuclear Enthalpy Rise Hot Channel FAH 2.7 20 I Factor Penalty Factors 2.7 20 3.2.3 Axial Flux Difference AFD 2.8 21 3.3.1 Reactor Trip System Instrumentation OTAT 2.9 24 OPAT 2.9 24 3.3.9 BoronDilution Mitigation._System Reactor Makeup Water Flow Rate 2.10 i

26 3.4.1 RCS Pressure, Temperature and Flow 1 RCS Pressure, Temperature and 2.11 26 limits for DNB; Flow 3.5.1 i Accumulators Max and Min Boron Conc.

2.12 i

26 3.5.4 Refueling Water Storage Tank i Max andMin Boron Conc.

2.13 26 3.7.15 i Spent Fuel Pool Boron Concentration Min Boron Concentration 2.14 28 3.9.1 Refueling Operations-Boron Min Boron Concentration 2.15 28 Concentration."

.A 5-6.5 Core Operating Limits Report Analytical Methods 1.1 6

(COLR) "_._*_

The Selected License. Commitments that reference this report are listed below:

SLC COR COLR SectionI Selected Licensing Commitment COLR Parameter Section Page 16.7-9.3 i Standby Shutdown System Standby Makeup Pump Water 2.16 29 16.9-1 t Boration Systems - Borated Water Borated Water Volume and Conc.

2.17 29 Source - Shutdown for BAT/RWST 16.9-12 Boration Systems - Borated Water.

Borated Water Volume and Conc.

2.18 30 Source-Operating for B AT/RWST

CNEI-0400-149 Page 6 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 1.1 Analytical Methods The analytical methods used to determine core operating limits for parameters identified in Technical Specifications and previously reviewed and approved by the NRC are as follows.

1. WCAP-9272-P-A, "WESTINGHOUSE RELOAD SAFETY EVALUATION METHODOLOGY," (_W Proprietary).

Revision 0 Report Date: July. 1985 Not Used for C2C16

2.

WCAP-10054-P-A, "Westinghouse Small Break ECCS Evaluation Model using the NOTRUMP Code, " (W Proprietary).

Revision 0 Report Date: August 1985

-3.

WCAP-10266-P-A, "THE i981 VERSION OF WESTINGHOUSE EVALUATION MODEL USING BASH CODE", (W Proprietary).

Revision 2 Report Date: March 1987 Not Used for C2C16

4.

WCAP-12945-P-A. Volume I and Volumes 2-5, "Code Qualification Document for Best-Estimate Loss of Coolant Analysis," (W Proprietary).

Revision: Volume I (Revision 2) and Volumes 2-5 (Revision 1)

Report Date: March 1998

5.

BAW-10168P-A, "B&W Loss-of-Coolant Accident Evaluation Model for Recirculating Steam Generator Plants," (B&W Proprietary)..

Revision 1 SER Date: January 22, 1991 Revision 2

'SER Dates: August 22. 1996 and November 26, 1996.

Revision 3 SER Date: June 15, 1994.

Not Used for C2C16

CNEI-0400-149 Page 7 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 1.1 Analytical Methods (continued)

6.

DPC-NE-3000PA, "Thermal-Hydraulic Transient Analysis Methodology," (DPC Proprietary).

Revision 3 SER Date: September 24, 2003

7. DPC-NE-3001PA, "Multidimensional Reactor Transients-and Safety Analysis Physics Parameter Methodology," (DPC Proprietary).

Revision 0 Report Date: November 15, 1991, republished December 2000

-8.

DPC-NE-3002A, "UFSAR Chapter 15 System Transient Analysis Methodology".

Revision 4 SER Date: April 6, 2001

'9. DPC-NE-2004P-A, "Duke Power Company McGuire and Catawba Nuclear Stations Core Thermal-Hydraulic Methodology using VIPRE-01," (DPC Proprietary).

Revision I SER Date: February 20, 1997

10. DPC-NE-2005P-A, "Thermal Hydraulic Statistical Core Design Methodology," (DPC Proprietary).

Revision 3 SER Date: September 16, 2002

11. DPC-NE-2008P-A, "Fuel Mechanical Reload Analysis Methodology Using TACO3," (DPC Proprietary).

Revision 0 SER Date: April 3, 1995 Not Used for C2C16

12. DPC-NE-2009-P-A, "Westinghouse Fuel,Transition Report," (DPC Proprietary).

Revision 2 SER Date: December 18, 2002

13. DPC-NE-1004A, "Nuclear Design Methodology Using CASMO-3/SIMULATE-3P."

Revision I SER Date: April 26, 1996 Not Used for C2C16

CNEI-0400-149 Page 8 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 1.1 Analytical Methods (continued)

14. DPC-NF-2010A, "Duke Power Company McGuire Nuclear Station Catawba Nuclear Station Nuclear Physics Methodology for Reload Design."

Revision 2 SER Date: June 24, 2003

15. DPC-NE-201 IPA, "Duke Power Company Nuclear Design Methodology for Core Operating Limits of Westinghouse Reactors," (DPC Proprietary).

Revision I SER Date: October 1. 2002

16. DPC-NE-1005-P-A, "Nuclear Design Methodology Using CASMO-4 / SIMULATE-3 MOX", (DPC Proprietary).

Revision 0 SER Date: August 20, 2004

17. BAW-10231P-A, "COPERNIC Fuel Rod Design Computer Code" (Framat-me ANP Proprietary)

Revision I SER Date: January 14, 2004.

Not Used for C2C16

CNEI-0400-149 Page 9 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.0 Operating Limits The cycle-specific parameter limits for the specifications listed inSection 1.0 are presented in the following subsections. These limits have been developed using NRC approved methodologies specified in Section 1.1.

2.1 Reactor Core Safety Limits (TS 2.1.1)

The Reactor Core Safety Limits are shown in Figure 1.

2.2 Shutdown Margin - SDM (TS 3.1.1, TS 3.1.4, TS 3.1.5, TS 3.1.6, TS 3.1.8) 2.2.1 ForTS 3.1.1, shutdown margin shall be greater than or equal to 1.3% AK/K in mode 2 with Keff < 1.0 and in modes 3 and 4.

2.2.2 For TS 3.1.1, shutdown margin shall be greater than or equal to 1.0% AK/K in mode 5.

2.2.3 For TS 3.1.4, shutdown margin shall be greater than or equal to 1.3% AK/K in mode I and mode 2.

2.2.4 For TS 3.1.5, shutdown margin shall be greater than or equal to 1.3% AK/K in mode I and mode 2 with any control bank not fully inserted.

2.2.5 For TS 3.1.6, shutdown margin shall be greater than or equal to 1.3% AK/K in mode I and mode 2 with Keff > 1.0.

2.2.6 For TS 3.1.8, shutdown margin shall be greater than or equal to 1.3% AK/K in mode 2 during Physics Testing.

CNEI-0400-149 Page 10 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Figure 1 Reactor Core Safety Limits Four Loops in Operation 670 DO NOT OPERATE IN THIS AREA 660' 640 0

630 ACCE.PTABLE OPERATION 58O 0.0 0.2 0.4 0.6 0.8" 1.0 1.2 Fraction of Rated Thermal Power

CNEI-0400-149 Page 11 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.3 Moderator Temperature Coefficient - MTC (TS 3.1.3) 2.3.1 The Moderator Temperature Coefficient (MTC) Limits are:

The MTC shall be less positive than the upper limits shown in Figure 2. The BOC, ARO, HZP MTC shall be less positive than 0,7E-04 AK/K/0F.

The EOC, ARO, RTP MTC shall be less negative than the -4.3E-04 AK/K/IF lower MTC limit.

2.3.2 The 300 ppm MTC Surveillance Limit is:

The measured 300 PPM ARO, equilibrium RTP MTC shall be less negative than or equal to -3.65E-04 AKIKI0F.

2.3.3 The 60 PPM MTC Surveillance Limit is:

The 60 PPM ARO, equilibrium RTP MTC shall be less negative than or equal to

-4.125E-04 AK/K/°F.

Where:

BOC = Beginning of Cycle (burnup corresponding to most positive MTC)

EOC = End of Cycle ARO = All Rods Out HZP = Hot Zero Thermal Power RTP = Rated Thermal Power PPM = Parts per million (Boron) 2.4 Shutdown Bank Insertion Limit (TS 3.1.5) 2.4.1 Each shutdown bank shall be withdrawn to at least 222 steps except under the special conditions listed below. Shutdown banks ate withdrawn in sequence and with no Overlap.

Special conditions Shutdown Banks A, B, C, D. and E can be inserted to 216 steps withdrawn individually with the following restrictions.

Entry to the special conditions should be limited to 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> per entry Steady state operation near 100%FP prior to entering special conditions

CNEI-0400-149 Page 12 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Figure 2 Moderator Temperature Coefficient Upper Limit Versus Power Level 1.0 0)

Q3 t-I-

0

-4 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0

10 20 30 40 50 60 70 80 90 100 Percent of Rated Thermal Power NOTE: Compliance with Technical Specification 3.1.3 may require rod withdrawal limits.

Refer to the Unit 2 ROD manual for details.

CNEI-0400-149 Page 13 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Figure 3 Control Bank Insertion Limits Versus Percent Rated Thermal Power Fully Withdrawn (Maximum = 231)

(29.6%, 231)

(80.0%, 231) 231 220 200 180 160 c L 140

= 120 8 100

.9 80 60 0.

c" 40 20 0

.00 _-_1..

Fully Withdrawn

'Minimum= 222)-

Control Bank B (100%, 161)

(0%, 163)

Control Bank C Control Bank D (0%,47)'

(30%,0) 0 0

20 30 40 50 60 70 80 90 100 Percent of Rated Thermal Power The Rod Insertion Limits (RIL) for Control Bank D (CD), Control Bank C (CC),. and Control Bank B (CB) can be calculated by:

Bank CD RIL= 2.3(P) -69 {30_< P 5 100}

Bank CC RIL = 2.3(P) + 47 {O_< P_ <80}

Bank CB RIL 2.3(P) +-63 0 ___

P _* 29.61 where P = %Rated Thennal Power NOTE: Compliance with Technical Specification 3.1.3 may require rod withdrawal limits.

Refer to the Unit 2 ROD manual fordetails.

Anytime the shutdown banks'are inserted below 222 steps withdrawn control bank D insertion is limited to 200 steps withdrawn (see Section 2.4.1 special conditions).

CNEI-0400-149 Page 14 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Table 1 Control Bank Withdrawal Steps and Sequence Fully Withdrawn at 222 Steps Control Control Control Control Bank A Bank 8 Bank C Bank D 0 Start 0

0

.0 116 0 Start 0

0 222 Stop 106 0

0 222 116 Siart 0

222 2 2 2 Stop 106 0

222 222 116 0 Stan 222 222 222 Stop

• 106 Fully Withdrawn at 223 Steps Control Control.

Control Control Bank A Bank B Bank C Bank D 0 Start 0

0 0

116

.0 Start 0

0 223 Stop 107 0

0 223 116 OStart 0

223 223 Stop 107 0

223 223 116 0 Start 223

.223 223 Stop.

107 Fully Withdrawn.at 224 Steps Control Control Control Control Bank A Bank B.'BankC Bank D 0 Start 0

0 0

116 0 Stan 0

0 224 Stop 108 0

0 224 116 0 Start 0

224 224 Stop 108.

0 224 224 116

• 0 Sta 224 224 224 Stop

. 108 Fully Withdrawn at 226 Steps Control Control Control Control Bank A Bank B Bank C Bank D Fully Withdrawn at 225 Steps Control

. Control Control Control BankA

. BankB

- Bank C BankD 0 Start 0

0 0

116 0 Start 0

0 225 Stop 109 0

0 225 116 0 Start 0

225 225 Stop 109 0

225 225 116 "

0Start 225 225 225 Stop 109 Fully Withdrawn at 227 Steps Control Control Control Control Bank A Bank B Bank C Bank D 0 Start 0

0 0

116 0 Start 0

0 226 Stop 110 0

0 226 116 0 Start 0

226 226 Stop 110 0

226 226 116 0 Stan 226 226

.226 StoO 110 Fully Withdrawn at 228 Steps Control Control. Control Control BankA Bank B Bank C Bank D 0 Start a

0 0

0 116 0 Start 0

0 228 Stop 112 0-0 228 116,

0Start 0

228 228 Stop 112 0

228 228 116 0 Start 228 228 228 Stop 1 12 Fully Withdrawn at 230 Steps Control Control. Control Control Bank A Bank B Bank C Bank D-0 Start 0

0 0

116 0 Start 0

0 2 2 7 Stop 111 0

0 227 116 0 Start 0

227 227 Stop 111 0

227

• 227 116 0 Start 227 227 227 Stop Mll Fully Withdrawn at 229 Steps Control Control Control Control Bank A Bank B H-: Bank C Bank D 0 Start 0

0 0

116 0 Start 0

0 229 Stop 113 0

0 229' 116 0 Star 0

229 229 Stop 113 0

229 229 116 0 Start 229 229 2 29 Stop 113 Fully Withdrawn at 231 Steps Control Control Control Control Bank A " BankB BankC BankD 0 Start 0

0 0

116 0 Start 0'

0 230 Stop 114 0

0 230 116 0 Start 0

230 230 Stop 114 "

0 230 230 116 0 Start 230 230 230 Stop 114 0 Stan 0

0 0

116 0Start 0

0 231 Stop H

1S5 0

0 231 116 0 Start 0

231 231 Stop 115 0

231 231 116 0Stan 231 231 231 Stop 115

CNEI-0400-149 Page 15 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.5 Control Bank Insertion Limits (TS 3.1.6) 2.5.1 Control banks shall be within the insertion, sequence, and overlap limits shown in Figure 3. Specific control bank withdrawal and overlap limits as a function of the fully withdrawn position are shown in Table 1.

2.6 Heat Flux -lot Channel Factor - FQ(X,Y,Z) (TS 3.2.1) 2.6.1 FQ(X,Y,Z) steady-state limits are defined by the following relationships:

F

• K(Z)/P forP > 0.5 F RTP *K(Z)/0.5 for F < 0.5 Q

where, P

(Thermal Power)/(Rated Power)

Note: The measured FQ(X,Y,Z) shall be increased by 3% to account for manufacturing tolerances and 5% to account for measurement uncertainty whencomparing against the LCO limits. The manufaciuring tolerance and measurement uncertainty are implicitly included in the FQ surveillance limits as defined in COLR Sections 2.6.5 and 2.6.6.

2.6.2 F'R

= 2.60 x K(BU) 2.6.3 K(Z) is the normalized FQ(X,Y,Z) as a function of core height.

K(Z) for Westinghouse RFA fuel is provided in Figure 4.

2.6.4 K(BU) is the normalized FQ(X,Y,Z) as a function of burnup. K(BU) for Westinghouse RFA fuel is 1.0 at all bumups.

The following parameters are required for core monitoring per the Surveillance Requirements of Technical Specification 3.2.1:

2.6.5

[,(X,YZ)]°P F

• Q(X,Y,Z)XMQ(X,Y,Z) 2 UMT* MT* TILT where:

[F*(X,Y,Z)]P =Cycle dependent maximum allowable designpeaking factor that ensures that the FQ(X,Y,Z) LOCA limit is not exceeded for operation within the AFD, RIL, and QPTR limits.

CNEI-0400-149 Page 16 of 32 Revision 3 Catawba 2 Cycle 16 Core. Operating Limits Report Fj (X,Y,Z)]

includes allowances for calculational and measurement uncertainties.

F* (X,Y,Z) =

MQ(X,Y,Z)

=

Design power distribution for FQ. F D (X,Y,Z) is provided in Appendix Table A-1 for normal operating conditions and in Appendix Table A-4 for power escalation testing during initial startup operation.

Margin remaining in core location XY,Z to the LOCA limit in the transient power distribution. MQ(X,Y,Z) is provided in Appendix Table A-I for normal operating conditions and in Appendix Table A-4 for power escalation testing during initial startup operation.

UMT Total Peak Measurement Uncertainty. (UMT = 1.05)

MT

=

Engineering Hot Channel Factor. (MT = 1.03)

TILT =

Peaking penalty that accounts for allowable quadrant power tilt ratio of 1.02. (TILT = 1.035)

L RPS 2,6.6

[FQ(X,Y,Z)].

FU(X,Y,Z)

• Mc(X,Y,Z)

UNIT

• NIT

• TILT

-where:

[FL(X,Y,Z)IPus FM(X,YZ) =

MC(X.Y,Z)

=

Cycle dependent maximum allowable design peaking factor that ensures that the FQ(X,Y,Z) Centerline Fuel Melt (CFM) limit is not exceeded for operation within the AFD, RIL, and QPTR limits. [FQ(X,Y,Z)]RPs includes allowances for calculational and measurement uncertainties.

Design-power distributions for FQ. DQXYZ) is provided in Appendix Table A-1 for normal operating conditions and in Appendix Table A-4 for power escalation testing during initial startup operations.

Margin remaining to the CFM limit in core location X,Y,Z from the transient power distribution. Mc(X,Y,Z) is provided in Appendix Table A-2 for normal operating conditions and in Appendix Table A-5 for power escalation testing during initial startup operations.

CNEI-0400-149 Page 17 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report UMT = Measurement Uncertainty (UMT = 1.05)

MT = Engineering Hot Channel Factor (MT = 1.03)

TILT =

Peaking penalty that accounts for allowable quadrant power tilt ratio of 1.02. (TILT 1.035) 2.6.7 KSLOPE 0.0725 where:

KSLOPE the adjustment to the K1 value from OTAT trip setpoint required to compensate for each 1% that FQ (X,Y,Z) exceeds [ Fj (X,Y,Z)]aPs 2.6.8 FQ(X,Y,Z) Penalty Factors for Technical Specification Surveillances 3.2.1.2 and 3.2.1.3 are provided in Table 2

CNEI-0400-149 Page 18 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Figure 4 K(Z), Normalized FQ(X,Y,Z) as a Function of Core Height for RFA Fuel 1,200 (0.0, 1.00)

(4.0, 1-00) 1.000 G (12.0,0.9615)

(4.0. 0.9615) 0.800 -

0.600-0.400 Core Height (ft)

K(Z) 0.0

. 1.0000 0.200

< 4.0 1.0000

> 4.0 0.9615 12.0 0.9615 0.000,

I I

0.0 2.0 4.0 6.0 8.0 10.0 12.0 Core Height (ft)

CNEI-0400-149 Page 19 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Table 2 FQ(X,Y,Z) and FAH(X,Y) Penalty Factors For Tech Spec Surveillances 3.2.1.2, 3.2.1.3 and 3.2.2.2 Burnup (EFPD) 4.

12 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 447-456-471 486 FQ(X,Y,Z)

Penalty Factor(%)

2.00 2.00 2.00 2.00 2.00.

2.00 2.10 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 F*H(X,Y)

Penalty Factor (%)

2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 Note: Linear interpolation is adequate for intermediate cycle burnups.

All cycle bumups outside the range of the table shall use a 2%

penalty factor for both FQ(XY,Z).and F)aH(X,Y) for compliance with the Tech Spec Surveillances 3.2.1.2, 3.2.1.3 and 3.2.2.2.

CNEI-0400-149 Page 20 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.7 Nuclear Enthalpy Rise Hot Channel Factor m FAH(X,Y) (TS 3.2.2)

The FAH steady-state limits referred to in Technical Specification 3.2.2 are defined by the following relationship.

2.7.1

[FkH (X, y)]LCO = MARP (X,Y) 1.0 + RRH (1.0 -

where:

[FkH (X,y)]LCO is definedas the steady-state, maximum allowed radial peak and includes allowances for calculation/measurement uncertainty.

MARP(X,Y) =

Cycle-specific operating limit Maximum Allowable Radial Peaks. MARP(X Y) radial peaking limits are provided in Table 3.

Thermal Power-Rated Thermal Power RRH =Thermal Power reduction required to compensate for each 1% that the measured radial peak, F* (X,Y), exceeds the limit.

(RRH = 3.34, 0.0 < P < 1.0)

The following parameters are required for core monitoring per the Surveillance requirements of Technical Specification 3.2.2.

2.7.2

[FL (X,Y)]SURV FLH(X,Y) *MAH(X, Y)

.UMR

• TILT where:

SURV

[FL (X,Y)]

Cycle dependent maximum allowable design peaking factor that ensures that the FaH(XY) limit is not exceeded for operation within the AFD, RIL, and QPTR limits.

S SURV.

FL (X,Y)

" includes allowances for calculational and measurement uncertainty.

D FAHl (X,Y) = Design power distribution for F.

F? (XY) is provided in Appendix Table A-3 for normal operation and in Appendix Table A-6 for power escalation testing during initial startup operation.

CNEI-0400-149 Page 21 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report M,(X,Y) = The margin remaining in core location X,Y relative to the.

Operational DNB limits in the transient power distribution.

MAH(X,Y) is provided in Appendix Table A-3 for normal operation and in Appendix Table A-6 for power escalation testing during initial startup operation.

UMR

= Uncertainty value for measured radial peaks. UMR is set to 1.0 since a factor of 1.04 is implicitly included in the variable MAH(X,Y).

TILT Peaking penalty that accounts for allowable quadrant power tilt ratio of 1.02. (TILT = 1.035) 2.7.3 RRH 3.34 where:

RRH Thermal Power reduction required to compensate for each 1% that the measured radial peak, F* (X,Y) exceeds its limit. (0 < P < 1.0) 2.7.4 TRH 0.04 where:

TRH = Reduction in OTAT K, setpoint required to compensate for each I % that the measured radial peak, FA(X,Y) exceeds its limit.

2.7.5 FAH(X,Y) Penalty Factors for Technical Specification Surveillance 3.2.2.2 are provided in Table 2.

2.8 Axial Flux Difference - AFD (TS 3.2.3) 2.8.1 The Axial Flux Difference (AFD) Limits are provided in Figure 5.

N

CNEI-0400-149 Page 22 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Table 3

.Maximum Allowable Radial Peaks (MARPS)

RFA Fuel MARPs 100% Full Power Core Height Axial Peak (ft) 1.05 1.1 1.2 1.3 1.4 1.5 1.6

.1.7 1.8 1.9 2.1 3.0 3.25 0.12 1.8092 1.8553 1.9489 1.9953 1.9741 2.1073 2.0498 2.009 1.9333 1.8625 1.778 1.3151 1.2461 1.20 1.8102 1.854 1.9401 1.9953 1.9741 2.1073 2.0191 1.9775 1.9009 1.8306 1.7852 1.3007 1.2235 2.40 1.8093 -1.8525 1.9312 1.9779 1.9741 2.0735, 1.9953 1.9519 1.876 1.8054 1.732 1.4633 1,4616 3.60 1.8098 1.8514 1.9204 1.9641 1.9741 2,0495 1.9656 1.9258 1.8524 1.7855 1.6996 1.4675 1.3874 4.80 1.8097 1.8514 1.9058 1.9449 1.9741 2-0059 1.9441 1.9233 1.8538 1.7836 1.67*4 1.2987 1.2579 6.00 1.8097 1.8514

.1.8921 1.9212 1.9455 1.9336 1.8798 1.8625 1.8024 1.7472 1.6705 1.3293 1.2602 7.20 1.807 1.8438 1.8716

. 1.893 1.8872 1.8723 1.8094. 1.7866 1.7332 1.6812 1.5982 1.2811

.1.2195 8.40 1.8073 1.8319 1.8452 1.8571 1.8156 1.795 1.7359 1.7089 1.6544 1.601 1.5127 1.2182 1.1578 9.60 1.8072 1.8102 1.8093 1.7913 1.7375 1.7382 1.6572 1.6347 1.5808 1.5301 1.4444 1.1431 1.0914 10.80 1.798 1.7868 1.7611 1,7163 1.6538 1.6315 1.5743 1.5573 1.5088 1.4624 1.3832 131009 I.047 11.40 1.7892 1.7652 1.725 1.6645 1.6057 1.5826 1.5289 1.5098 1.4637 1.4218 1.3458 1.067 1.0142

CNEI-0400-149 Page 23 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Figure 5 Percent of Rated Thermal Power Versus Percent Axial Flux Difference Limits

(-48, *00)

(+10, 100)

Unacceptable Operation Unacceptable Operation 90 80 0

70 E

Acceptable Operation 60 50 -

'(-36, 50)

(+21, 50)

C40 a30

-50

-40

-30.

-20

-10 0

10 Axial Flux Difference (% Delta 1) 20 30 40 50 NOTE: Compliance with Technical Specification 3.2.1 may require more restrictive AFD limits. Refer to the Unit 2 ROD manual for operational AFD limits:

CNEI-0400-149 Page 24 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.9 Reactor Trip System Instrumentation Setpoints (TS 3.3.1) Table 3.3.1-1 2.9.1 Overtemperature AT Setpoint Parameter Values Parameter Nominal Value Nominal Tavg at RTP Nominal RCS Operating Pressure Overtemperature AT reactor trip setpoint Overtemperature AT reactor trip heatup setpoint penalty coefficient Overtemperature AT reactor trip depressurization setpoint penalty coefficient Time constants utilized in the lead-lag compensator for AT Time constant utilized in the lag compensator for AT Time constants utilized in the lead-lag compensator for Tvg Time constant utilized in the measured T*,., lag compensator fl (AI) "positive" breakpoint fl(AI) "negative" breakpoint fl(Al) "positive" slope fl(Al) "negative" slope T' < 590.8 "F P'= 2235 psig K1 = 1.1953 K2 = 0.03163/°F

.K3 = 0.001414/psi "c = 8 sec.

"r2 = 3 sec.

"r3 = 0 sec.

"t4 = 22 sec.

"r5 = 4 sec.

'r6 = 0 sec.

= 3.0 %A1

=N/A*

= 1.525 %AT 0/ %AI

=N/A" The fl (AI) negative breakpoints and slopes for OTAT are less restrictive than the OPAT f2(AI) negative breakpoint and slope. Therefore, during a transient which challenges the negative imbalance limits the OPAT f2(AI) limits will result in a reactor trip before the OTAT fI(AD) limits are reached. This makes implementation of an OTAT f I(Al) negative breakpoint and slope unnecessary.

CNEI-0400-149 Page 25 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Overpower AT Setpoint Parameter Values 2.9.2 Parameter Nominal Tavg at RTP Overpower AT reactor trip setpoint Overpower AT reactor trip penalty Overpower AT reac.tor trip heatup setpoint penalty coefficient Time constants utilized in the lead-lag compensator for AT Time constant utilized in the lag compensator for AT Time constant utilized in the measured T.,

lag compensator Time constant utilized in the rate-lag controller for Ta,.g f2(AI) "positive" b reakpoint f2(AI) "negative" breakpoint f2(AI) "positive"' slope f2(Al) "negative" slope Nominal Value T" < 590.8 OF K4 = 1.0819 K5 = 0.02 / 'F for increasing Tavg X5 = 0.00 / 'F for decreasing Tavg K6 = 0.001291/°F for T > T" K6 = 0.0 /1F for T < T"

'[ = 8 sec.

T2 = 3 sec.

T3 = 0 sec.

_C6 = 0 sec.

-7 = 10 sec:

= 35.0 %AI

= -35.0 %A,

=7.0 %AT/ %AI

= 7.0 %AT(/ %AI

CNEI-0400-149 Page 26 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.10 Boron Dilution Mitigation System (TS 3.3.9) 2.10.1 Reactor Makeup Water Pump flow rate limits:

Applicable Mode Limit Mode 3

< 150 gpm Mode 4 or 5

<70gpm 2.11 RCS Pressure, Temperature and Flow Limits for DNB (TS 3.4.1)

The RCS pressure, temperature and flow limits for DNB are shown in Table 4.

2.12 Accumulators (TS 3.5.1.)

2.12.1 Boron concentration limits during modes 1 and 2, and mode 3 with RCS pressure

>1000 psi:

Parameter Limit Cold Leg Accumulator minimum boron concentration.

2,500 ppm Cold Leg Accumulator maximum boron concentration.

3,075 ppm 2.13 Refueling Water Storage Tank-RWST (TS 3.5.4) 2.13.1 Boron concentration limits during modes 1, 2, 3, and 4:

Parameter Limit Refueling Water Storage Tank minimum boron 2,700 ppm concentration.

Refueling Water Storage Tank maximum boron 3,075 ppm concentration.

CNEI-0400-149 Page 27 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Table 4 Reactor Coolant System DNB Parameters No. Operable PARAMETER INDICATION CHANNELS LIMITS

1. Indicated RCS Average Temperature meter 4

< 589.6 OF meter 3

< 589.3 OF computer 4

< 590.1 OF computer 3

< 589.9 OF

2. Indicated Pressurizer Pressure meter 4

> 2219.8 psig meter 3

> 2222.1 psig computer 4

> 2215.8 psig computer 3

> 2217.5 psig.

-3. RCS Total Flow Rate

_>390,000 gpm

CNEI-0400-149 Page 28 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.14' Spent Fuel Pool Boron Concentration (TS*3.7.15) 2.14.1 Minimum boron concentration limit for the spent fuel pool. Applicable when fuel assemblies are stored in the spent fuel pool.

Parameter Limit Spent fuel pool minimum boron concentration.

2,700 ppm 2.15 Refueling Operations - Boron Concentration (TS 3.9.1) 2.15.1 Minimum boron concentration limit for the filled portions of the Reactor Coolant System,' refueling canal, and refueling cavity for mode 6 conditions. The minimum boron concentration limit and plant refueling procedures ensure that the Keff of the core will remain within the mode 6 reactivity requirement of Keff <

0.95.

Parameter Limit Minimum Boron concentration of the Reactor Coolant System, the refueling canal, and the refueling cavity.

2,700 ppm

CNEI-0400-149 Page 29 of 32

,Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.16 Standby Shutdown System - Standby Makeup Pump Water Supply - (SLC-16.7-9.3) 2.16.1 Minimum boron concentration limit for the spent fuel pool. Applicable for modes 1, 2, and 3.

Parameter Limit Spent fuel pool minimum boron concentration for surveillance SLC-16.7-9.3.

2,700 ppm 2.17 Borated Water Source-Shutdown (SLC 16.9-11) 2.17.1 Volume and boron concentrations for the Boric Acid Tank (BAT) and the Refueling Water Storage Tank (RWST) duiing Mode 4 with.any RCS cold leg temperature < 210°F, and Modes 5.and 6.

Parameter Limit Boric Acid Tank minimum boron concentration Volume of 7,000 ppm boric acid solution required to maintain SDM at 68°F Boric Acid Tank Minimum Shutdown Volume (Includes the additional volumes listed in SLC 16.9-11) 7,000 ppm 2000 gallons 13,086 gallons (14.9%).

NOTE" When cycle burnup is > 450 EFPD, Figure 6 may be used to determine the required Boric Acid.Tank Minimum Level.

Refueling Water Storage Tank minimum boron concentration Volume of 2,700 ppm boric acid solution required to maintain SDM at 68 '°F Refueling Water Storage Tank Minimum Shutdown Volume (Includes the additional volumes listed in SLC 16.9-11) 2,700 ppm 7,000 gallons 48,500 gallons (8.7%)

CNEI-0400-149 Page 30 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report 2.18 Borated Water Source - Operating (SLC 16.9-12) 2.18.1 Volume and boron concentrations for the Boric Acid Tank (BAT): and the Refueling Water Storage Tank.(RWST) during Modes 1, 2, and 3 and Mode 4 with-.all RCS cold leg temperatures > 210°P.

Parameter Boric Acid Tank minimum boron concentration Volume of 7,000 ppm boric acid solution required to maintain SDM at 210OF Boric Acid Tank Minimum Shutdown-Volume (Includes the additional volumes listed in SLC 16.9-12)

Limit 7,000 ppm 13,500 gallons 25,200 gallons (45.8%)

NOTE: When cycle burnup is > 450 EFPD, Figure 6 may be used to determine the required Boric Acid Tank Minimum Level.

Refueling Water Storage Tank minimum boron concentration Volume of.2,700 ppm boric acid solution required to maintain SDM at 210 'F Refueling Water Storage Tank Minimum Shutdown Volume (Includes the additional.

volurnes listed in SLC 16.9-12) 2,700 ppm 57,107 gallons 98,607 gallons (22.0%).

CNEI-0400-149 Page 31 of 32 Revision 3 Catawba 2 Cycle 16 Core Operating Limits Report Figure 6 Boric Acid Storage Tank Indicated Level Versus Primary Coolant Boron Concentration (Valid When Cycle Burnup is > 450 EFPD)

This figure includes additional volumes listed in SLC 16.9-11 and 16.9-12 50.0 45.0 40.0 35.0

> 30.0 25.0

,-l 20.0 15.0 10.0 5.0 0.0

~Unacceptable~__

E4 Opertio RCS Boron Concentration BAT Level (ppm)

, (.l0/evel) 0 < 300 43.0

300 < 500

.40.0 500 < 700 37.0 700 < 1000,.

30.0 1000 < 1300 1 14.9 1300< 2700 9.8

> 2700 9.8 Acceptable Operation

~-~___

~--

~-.

.~~----

2 ___________

2 ~

~

~r===~

~

~

~

~

0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 Primary Coo]ant Boron Concentration (ppmb)