ML081400779

From kanterella
Jump to navigation Jump to search
Cycle 16, Revision 2, Core Operating Limits Report (COLR)
ML081400779
Person / Time
Site: Catawba Duke Energy icon.png
Issue date: 05/08/2008
From: Morris J
Duke Energy Carolinas
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
CNEI-0400-149, Rev 2
Download: ML081400779 (35)
v • d • e


Text

JAMES R. MORRIS, VICE PRESIDENT PDuke Eanergy Duke Energy Carolinas, LLC Carolinas Catawba Nuclear Station / CNOI VP 4800 Concord Road York, SC 29745 803-831-4251 803-831-3221 fax May 8, 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 2 Attached, pursuant to Catawba Technical Specification 5.6.5, is an information copy of revision 2 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

ý00ct www. duke-energy,com

U. S. Nuclear Regulatory Commission May 8, 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 8, 2008 Page 3 -

bxc: (w/att)

RD Hart CN01RC MJ Sawicki CN01RC AR James EC08G BL Aldridge CNS01SA NCMPA-1 SREC PMPA NCEMC RGC Date File Master File CN-801.01 ELL EC050

CNEI-0400-149 Page 1 of 32 Revision 2 Catawba Unit 2 Cycle 16 Core Operating Limits Report Revision 2 April 2008 Duke Power Company Date Prepared By:

Checked By: 1-a

<3/--vA Checked By:,

Approved By:

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 2 INSPECTION OF ENGINEERING INSTRUCTIONS Inspection Waived By: PC (Sponsor)

-hý 0i Date:  !/r A

CATAWBA Inspection Waived MCE (Mechanical & Civil) R Inspected By/Date:

RES (Electrical Only) E4- Inspected By/Date:

RES (Reactor) N Inspected By/Date:: _ _*___ _ _"

MOD N Inspected By/Date: "_ "

Other ( [] Inspected By/Date: __

OCONEE Inspection Waived MCE (Mechanical & Civil) F1 Inspected By/Date: ..

RES (Electrical Only) L] Inspected By/Date:

RES (Reactor) Inspected By/Date: _ _ _ _"

MOD 11 Inspected By/Date: ,_ _ __'

Other ( _[]" Inspected By/Date: "_ _ _ __*

MCGUIRE Inspection Waived MCE (Mechanical & Civil) IZ Inspected By/Date: __'

RES (Electrical Only) 1] Inspected By/Date:

RES (Reactor) [] Inspected By/Date: .....

MOD [] Inspected By/Date: _

Other ( _) I Inspected By/Date:

  • _.

CNEI-0400-149 Page 3 of 32 Revision 2 Catawba 2 Cycle 16 Core Operating Limits Report Implementation Instructions for Revision 2 Revision Description and PIP Tracking Revision 2 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 the remainder of Catawba Unit 2 Cycle 16. Revision 2 was initiated by PIP #C-08-01112, CA#5.

Implementation Schedule Revision 2 may become effective -immediately but must become effective prior to 5/09/2008.

This date is the next scheduled quart erly.RCCA movement 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 2 Catawba 2 Cycle 16 Core Operating Limits Report REVISION LOG Revision Effective Date COLR 0 September 2007 C2C16 COLR rev. 0 1 February 2008 C2C16 COLR rev. 1 2 April 2008 C2C16 COLR rev. 2 Insertion/Deletion Instructions I

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

CNEI-0400-149 Page 5 of 32 Revision 2 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 arelisted below:

TS COLR COLR Section Technical Specifications COLR Parameter Section Page 2.1.1: Reactor Core Safety Limits RCS Temperature and Pressure 2.1 9

..............* Safety LLimits* . .....

3.1.1 Shutdown Margi  !:.Shutdown Margin 2.2 9 3.1.3 Moderator Temperature Coefficient MTC 2.3 11 3.1.4 - Rod Group Limits Shutdown Margin . " 2.2 9 9ignment 3.1.5 Shutdown Bank Insertion Limit Shutdown Margin . 2.2 9 Rod Insertion Limits 2.4 11 3.1.6 Control Bank Insertion Limit Shutdown Margin 2.2 9 3.1.8 Physics Tests Exceptions

Rod Insertion Limits Shutdown Margin

_ I 2.5 22 1-5 9

3.2.1 Heat Flux Hot Channel Factor FQ 2.6 15 AFD 2.8 21 OTAT 2.9 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 Instrumentation1 OTAT 2.9 24 OPAT " ' 2.9 24 3.3.9' Boron Dilution Mitigation System' Reactor Makeup Water Flow Rate 2.10 26 3.4.1 RCS Pressure, Temperature andFlow 1 RCS Pressure, Temperature and 2.11 26 1limits for DNB Flw RF Prsuelemeaueanw.1 2 3.5.1 1 Accumulators _"__ ..... Max and Min Boron.Conc. j2.12 26

-3.:5.4 -iRefueling Water Storage TankM. Max and Min Boron Conc. 1 2 3.7.15 §.p ent Fuel Pool Boron Concentration Min Boron Concentration 2.14 28 3.9.1 " Refueling Operations - Boron Min Boron Concentration " 2.15 28 1

Concentration R .. L. 6 5.6.5 Core Operating Limits Report Analytical Methods 6

______ i(COLR) . , _ _

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

Section Selected Licensing Commitment COLR Parameter _Section Page 16.7-9.3 Standby Shutdown System Standby Makeup Pump Water 2.16 29 Supply ._*_.__

16.9-11 Boration Systems - Borated Water IBorated Water Volume and.Conc. 2.17 29

__ *__Source- Shutdown for BAT/RWST ._"___

16.9-12. i Boration Systems-Borated Water Borated Water Volume and Conc. 2.18 30

_ Source - Operating Ifor BATIRWST _ ___ I

CNEI-0400-149 Page 6 of 32 Revision 2 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 1981 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 1 (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). d 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 2 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 1 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 1.

SER Date: April 26, 1996 Not Used for C2C16

CNEI-0400-149 Page 8 of 32 Revision 2 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-201t PA, "Duke Power Company Nuclear Design Methodology for Core Operating Limits of Westinghouse Reactors," (DPC Proprietary).

Revision 1 SER Date: October 1, 2002.

16. DPC-NE-i005-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 Des ign Computer Code" (Framatome ANP Proprietary)

Revision 1 SER Date: January 14, 2004 Not Used for C2C16

CNEI-0400-149 Page 9 of 32 Revision 2.

Catawba 2 Cycle 16 Core Operating Limits Report 2.0, Operating Limits The cycle-specific parameter limits for the specifications listed in Section 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 For TS 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 1 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 1 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 1 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 2 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 660 650 ___________ _

640 " .. ___" _.. .__

- -2400 psia 0 630_______ __ __

U 620 S610 1945. psia 600 ,

590 ,

ACCEPTABLE OPERATION.

580 0.0 0.2 0.4 0.6 08 10 1.2 Fraction of Rated Thermal Power

CNEI-0400-149 Page 11 of 32 Revision 2 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/°F.

The EOC, ARO, RTP MTC shall be less negative than the -4.3E-04 AK/K/'F 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 AK/K/ 0 F.

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/ 0 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 are withdrawn in sequence and with no overlap.

Special conditions Shutdown Banks C, D, and E canbe 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 0 Steady state operation near 100%FP prior to entering special conditions

CNEI-0400-149 Page 12 of 32 Revision 2 Catawba 2 Cycle 16 Core Operating Limits Report Figure 2 Moderator Temperature Coefficient Upper Limit Versus Power Level 1.0 0.9 0.8 0.7 I

0 0.6 0.5 E 0.4 W- 0 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 2 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 L- - - L- -J J ~Fully Withdrawn (Minimum =222) 200 Control Bank B 180 160 -(0%, 163) C (100%, 161)

  • - 140
  • Control Bank C -

C 120 o100

.2 80 - Control Bank D

=60

'40 _ (0%, 47) 20 (30%,0) 0 0 10 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.

ýBank B (CB) can be calculated by:

Bank CDRIL - 2.3(P)-69{30_* P*100}

Bank. CC RIL= 2.3(P)+ 47 {0< P*<_80}

Bank CBRIL= 2.3(P) + 163 {0< P* 29.6}

where P %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.

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 2 Catawba 2 Cycle 16 Core Operating Limits Report Table 1 Control Bank Withdrawal Steps and Sequence Fully Withdrawn at 222 Steps " Fully Withdrawn at 223 Steps Control Control Control Control Control Control Control Control BankA BankB BankC BankD Bank A Bank B Bank C Bank D 0 Start 0 0 0 o Start 0 . 0 .0 116 0Start 0 0 116 0 Start 0 0 222 Stop 106 0 0 223 Stop' 107 0 0 222 - 116 OStart 0 223 116 OStart 0 222 222 Stop. 106 0 223 223 Stop 107 0 222 222 116 0 Start 223 223 116 0 Start 222. 222 222 Stop 106 223. 223 223 Stop 107 Fully Withdrawn at 224 Steps Fully Withdrawn at 225 Steps Control .:Control Control Control Control Control . Control Control BankA BankB BankC BankD Bank A Bank B Bank C Bank D 0 Start 0.. 0 0 0 Start 0 0 0 116 0 Start 0 0 . 116 0 Start 0 0 224 Stop 108 0 0 225 Stop 109 0 0 224 116 0 Start 0 225 116 0 Start 0 224 224 Stop 108 0 *225 225 Stop 109 0 224 224 116 0 Start 225 225 116 0 Start 224 224 224 Stop 108

  • 225 225 225 Stop 109 Fully Withdrawn at 226 Steps Fully, Withdrawn at 227 Steps Control Control Control Control. Control Control Control Control BankA Bank B BankC BankD . Bank A Bank B Bank C Bank D 0 Start 0 0 0
  • Start 0 0 0 116 OStart 0 0. 116 0 Start 0 0 226 Stop 110 0 0 *227 Stop 111 0 0 226 116 0 Start 0 227 116 0 Start 0 226 226 Stop 110 0 227 227 Stop 111 0 226 226 116 0 Start 227 .227 116 0 Start' 226 226. 226 Stop 110 227. .227 227 Stop 111 Fully Withdrawn at 228 Steps Fully Withdrawn at 229 Steps
  • Control Control Control Control Control Control Control Control

-Bank A

  • Bank.B BankC -BankD Bank A Bank B Bank C Bank D 0 Start. 0 0 0 0 Start- 0 0 0 116 OStart
  • 0 0 116; . Start .0 0.

228 Stop -112 0" 0 229.Stop 113 0 0 228 .116 .0 Start 0. 229

  • 116 .0Start - 0 228 M28Stop .112 0. - 229" 229 Stop 113- 0 228. . 228" . 116 '0Start 229 229 116 0 Start

. 228 *228 228 Stop 112 229 .229 229 Stop 113 Fully Withdrawn at 230 Steps Fully Withdrawn at 231 Steps Control Control Control Control Control Control Control Control Bank A -Bank B Bank C BankD Bank A Bank B Bank C Bank D OStart 0ý. 0. 0 0 Start 0 0 '0 116 OStart 0 0 116 0 Start 0- 0 230 Stop 114 0 0 231 Stop 115 0 0 230 116 OStart " 0 231 116 0Start 0 230 230 Stop 114 0 231 231 Stop 11'5 0 230 230 116 . OStart 231 . 231 116 0tSta15 230 230 '230Stop 114 231 231 231 Stop 115

CNEI-0400-149 Page 15 of 32 Revision 2 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 Hot 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 QRT P *K(Z)/P for P > 0.5 F TRP *K(Z)/0.5 for P < 0.5 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 when comparing against the LCO limits. The manufacturing 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 FoTr =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 burnups.

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

D?

[FQ(X,Y,Z)]OP LIF"(X,Y,Z)

T M

  • MQ(X,Y,Z) 2.6.5 Q 7 UMT *MT *TELT where:

[2F (X,Y,Z)]OP = Cycle dependent maximum allowable design peaking 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 2 Catawba 2 Cycle 16 Core Operating Limits Report

[QFo (X,Y,Z)] includes allowances for calculational and measurement uncertainties.

F (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.

MQ(X,Y,Z) = Margin remaining in core location X,Y,Z to the LOCA limit in the transient power distribution. MQ(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.

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) 2.6.6 [F6(X,'Y,Z)]

L RPS FQ(X,Y,Z)

  • MC(X,Y,Z)

UMT

  • TILT where:

[FQ(X,Y,Z)]RPS 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...

FQ(X,Y,Z) = Design power distributions for.FQ. FQ(X,Y,Z)isprovided in Appendix Table A-i for normal operating conditions'and in Appendix Table A-4 for power escalation testing during initial startup operations.

Mc(X,Y,Z) = 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-2for 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 2 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 FQm (X,Y,Z) exceeds [FL (X,Y,Z)] RPS.

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 2 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 1(0.0,...1.00) (4.0, 1.00),0 (12.0.,0.9615) 1.000 (4.0, 0.9615) 0.800 N 0.600 0.400 .

Core Height (ft) K(Z) 0.0 1.0000 0.200 < 4.0 1.0000

> 4.0 0.9615

    • 12.00.9615 0.000I 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 2 Catawba 2 Cycle 16 Core Operating Limits Report Table 2 FQ(X,Y,Z) and F~A(X,Y) Penalty Factors For Tech Spec Surveillances 3.2.1.2, 3.2.1.3 %and3.2.2.2 Burnup FQ(X,Y,Z) FAI(X,Y)

(EFPD) Penalty Factor( %) Penalty Factor (%)

4 2.00 2.00 12 2.00 2.00 25 2.00 2.00 50 2.00 2.00 75 2.00 2.00 100 2.00 2.00 125 2.10 2.00 150 2.00 2.00 175 2.00 ..2.00 200 2.00 2.00 225 2.00 2.00 250 2.00 2.00 275 2.00 2.00 300 2.00 2.00 325 2.00 2.00 350 2.00 2.00 375 2.00 2.00 400 2.00 .,2.00 425 2.00 2.00 447 2.00 2.00 456 2.00 2.00 471 2.00 *2.00 486 2.00 2.00 Note: Linear interpolation is adequate for intermediate cycle burnups.

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

penalty factor for both FQ(X,Y,Z) and FAH(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- 2 Catawba 2 Cycle 1.6 Core Operating Limits Report 2.7 Nuclear Enthalpy Rise Hot Channel Factor - 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 [F H(X,Y)]LCO= MARP (X,Y)

  • 1. + RRIH (10-where:

[FkH (X, y)]LCO is defined as 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.

p= 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..

SURV FL (X, Y) *M H(X,.Y) 2.7.2 [FAH (X,Y)] = FTUMR R

  • T"LT
  • TELT '*.-

where:

SURV FL (X,Y)] = Cycle dependent maximum allowable design peaking factor-that ensures that the FA(X;Y) limit is not exceeded for .

operation within the AFD, RIL, and QPTR limits.

FH (X,Y) SURV includes allowances for calculational and measurement uncertainty.

D D

-FA (X,Y)= Design power distribution for FAH FAH (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.

CNEI-0400-149 Page 21 of 32 Revision 2 Catawba 2 Cycle 16 Core Operating Limits Report MAH(XY) = 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 MM(XY).

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, FL (X,Y) exceeds its limit. (0 < P < 1.0) 2.7.4 TRH = 0.04 where:

TRH Reduction in OTAT K1 setpoint required to compensate for each 1% that the measured radial peak, FH(X,Y) exceeds its limit.

2.7.5 FAH(xY) 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.

CNEI-0400-149 Page 22 of 32 Revision 2 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 1.6714. 1.2987 1:2579 6.00 1.8097 1.8514 11.8921 . 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 1.2871 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 1.7182 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 1.1009 1.047 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 2 Catawba 2 Cycle 16 Core Operating Limits Report Figure 5 Percent of Rated Thermal Power Versus Percent Axial Flux Difference Limits

(-18, 100) (+10, 100)

_ + lllll _

Unacceptable Operation Unacceptable Operation 90 +

.80 +

I-, 70 +

a.) Accepta ble Operation 60 +/-

a.) 50 +

F-(-36, 50) (+21, 50) 40+

30 +

20+

10 +

tx

- - I 21 4

-50 -40 -30 -20 -10 0 10 20 30 40 50 Axial Flux Difference (% Delta I)

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 2 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 T'< 590.8 'F Nominal RCS Operating Pressure P'= 2235 psig Overtemperature AT reactor trip setpoint K1 = 1.1953 Overtemperaturie AT reactor trip heatup setpoint K2 = 0.03163/°F penalty coefficient Overtemperature AT reactor trip depressurization K3 = 0.001414/psi setpoint penalty coefficient Time constants utilized in the lead-lag compensator T1 = 8 sec:

for AT '2 = 3 sec.

Time constant utilized in the lag compensator for AT r3 = 0 sec.

Time constants utilized in the lead-lag compensator ,4 = 22 sec.

for Tavg

'U5 = 4 sec.

Time constant utilized in the measured Tavg lag '6 = 0 sec.

compensator f1 (AI) "positive" breakpoint = 3.0 %AI fl(AI) "negative," breakpoint = N/A*

fl (AI) "positive" slope = 1.525 %AT 0 / %AI fl(AI) "negative" slope = N/A*

The fl (AI) negative breakpoints and slopes for OTAT are less restrictive than the OPAT f2 (Al) negative breakpoint and slope. Therefore, during a transient which challenges the negative imbalance limits the OPAT f2 (AJ) limits will result in a reactor trip before the OTAT fl(AI) limits are reached. This makes implementation of an OTAT f 1 (AI) negative breakpoint and slope unnecessary.

CNEI-0400-149 Page 25 of 32 Revision 2 Catawba 2 Cycle 16 Core Operating Limits Report 2.9.2 Overpower AT Setpoint Parameter Values Parameter Nominal Value Nominal Tavg at RTP T" < 590.8 OF Overpower AT reactor trip setpoint K4 = 1.0819 Overpower AT reactor trip penalty K 5 ,= 0.021 'F for increasing Tavg K 5 = 0.00 / 'F for decreasing Tavg Overpower AT reactor trip heatup setpoint K6= 0.001291/ 0FforT>T" penalty coefficient K6 = 0.0 /°F for T < T" Time constants utilized in the lead-lag ,r1 =8 sec.

compensator for AT T2 = 3 sec.

Time constant utilized in the lag 'r3= 0 sec.

compensator for AT Time constant utilized in the measured Tavg T= 0 sec.

lag compensator Time constant utilized in the rate-lag =7 10 sec.

controller for Tavg f 2(AI) "positive" breakpoint = 35.0 %AI f 2(AI) "negative" breakpoint = -35.0 %AI f 2(AI) "positive" slope =7.0 %ATo %AI f 2(AI) "negative" slope = 7.0 %ATo/ %AI

CNEI-0400-149 Page 26 of 32 Revision 2 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 < 70 gpm 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 modesý 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 2 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 °F meter 3 < 589.3 °F computer 4 < 590.1 TF computer 3 < 589.9 0F
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 2 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 2,700 ppm System, the refueling canal, and the refueling cavity.

CNEI-0400-149 Page 29 of 32 Revision 2 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 2,700 ppm

.surveillance SLC-16.7-9.3.

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) during Mode 4 with any RCS cold leg temperature < 210°F, and Modes 5 and 6.

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

16.9-11)

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 2,700 ppm concentration Volume of 2,700 ppm boric acid solution required 7,000 gallons to maintain SDM at 68 'F Refueling Water Storage Tank Minimum 48,500 gallons Shutdown Volume (Includes the additional (8.7%)

vOlumes listed in SLC 16.9-11)

CNEI-0400-149 Page 30 of 32 Revision 2 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 F.

Parameter Limit Boric Acid Tank minimum boron concentration 7,000 ppm Volume of 7,000 ppm boric acid solution required 13,500 gallons to maintain SDM at 210 0 F Boric Acid Tank Minimum Shutdown Volume 25,200 gallons (Includes the additional volumes listed in SLC (45.8%)

16.9-12)

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 2,700 ppm concentration Volume of 2,700 ppm boric acid solution required 57,107 gallons to maintain SDM at 210 TF Refueling Water Storage Tank Minimum 98,607 gallons Shutdown Volume (Includes the additional (22.0%)

volumes listed in SLC 16.9-12)

CNEI-0400-149 Page 31 of 32 Revision 2 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 . .......

............. RCS Boron Concentration.j BAT Level 40.0(pp) (0/level) 0 < 300 43.0 35.0 **:**" 300 < 500 40.0 35.0500 < 700 37.0 700 < 1000 30.0 30.0 1000<1300 14.9 25.0 > 270 9.

Unacceptable

- 20.0. Operation Acceptable Operation 15.0 i 10.0 5.0 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 Primary Coolant Boron Concentration (ppmb)

CNEI-0400-149 Page 32 of 32 Revision 2 Catawba 2 Cycle 16 Core Operating Limits Report Appendix A Power Distribution Monitoring Factors Appendix A contains power distribution monitoring factors used in Technical Specification Surveillance. Due to the size of the monitoring factor data, Appendix A is controlled electronically within Duke and is not included in the Duke internal copies of the COLR. The Catawba Reactor and Electrical Systems Engineering Section controls this information via computer files and should be contacted if there is adneed to access this information.

Appendix A is included in the COLR copy transmitted to the NRC.

Retrieved from "https://kanterella.com/w/index.php?title=ML081400779&oldid=2569344"