ML051670098
| ML051670098 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 04/26/2005 |
| From: | Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| CNEI-0400-24, Rev 28 | |
| Download: ML051670098 (35) | |
Text
CNEI-0400-24 Page 1 of 35 Revision 28 Catawba Unit 1 Cycle 16 Core Operating Limits Report Revision 28 April 2005 Duke Power Company Date Prepared By:
I Checked By: &f$(ilk,$/?I-<
Checked By:
Y / ~ G / ~ X C
\\
Approved By:
~/+&+w-QA Condition 1 The information presented in this report has been prepared and issued in accordance with Catawba Technical Specification 5.6.5.
CNEI-0400-24 Page 2 of 35 Revision 28 INSPECTION OF ENGINEERING INSTRUCTIONS Inspection Waived By:
(Sponsor)
MCE (Mechanical & Civil)
RES (Electrical Only)
RES (Reactor)
MOD Other (
)
CATAWBA Inspection Waived I<
Inspected B ymate:
Inspected B ymate:
I W Inspected Bymate:
IW Inspected Bymate:
i J Inspected B ymate:
MCE (Mechanical & Civil)
RES (Electrical Only)
RES (Reactor)
MOD Other (
)
Inspection Waived 1 1 1_1 I _l 1 J I J Inspected Bymate:
Inspected Bymate:
Inspected B y/Date:
Inspected ByIDate:
Ins~ected Bvmate:
MCE (Mechanical & Civil)
RES (Electrical Only)
RES (Reactor)
MOD Other (
1 Inspection Waived IJ i l i l il i i MCGUIRE Inspected Bymate:
Inspected Bymate:
Inspected B ymate:
Ins~ected BvlDate:
Inspected B ymate:
CNEI-0400-24 Page 3 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Implementation Instructions for Revision 28 Revision Description and PIP Tracking Revision 28 of the Catawba Unit 2 COLR contains limits specific to the Catawba 1 Cycle 16 reload core. There is no PIP associated with this revision.
Implementation Schedule Revision 28 may become effective any time during No MODE between Cycles 15 and 16 but must become effective prior to entering MODE 6 which starts Cycle 16. This revision replaces the current revisions (CNEI-0400-24, Rev. 27).
Data files to be Implemented No data files are transmitted as part of this document.
Insertion/Deletion Instructions Remove Insert pages 1-34, of rev 27 (including Appendix A*)
pages 1-35 of rev 28 (including Appendix A*)
- Appendix A contains power distribution monitoring factors used in Technical Specification Surveillance. Appendix A is only included in the electronic COLR copy sent to the NRC.
CNEI-0400-24 Page 4 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report REVISION LOG Revision EI Date Pages Affected COLR 0 - 1 Superceded N/A C1C07 2 - 5 Superceded N/A C1C08 6 - 8 Superceded N/A C1C09 9 - 11 Superceded N/A C1C10 12 - 14 Superceded N/A C1C11 15 - 17 Superceded N/A C1C12 18 - 21 Superceded N/A C1C13 22 - 23 Superceded N/A C1C14 24 November 2003 All C1C15 (Orig. Issue) 25 March 2004 1-34 C1C15 (Revision 1) 26 September 2004 1-34 C1C15 (Revision 2) 27 March 2005 1-34 C1C15 (Revision 3) 28 April 2005 1-35 C1C16 (Orig. Issue)
CNEI-0400-24 Page 5 of 35 Revision 28 Catawba 1 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 Section Technical Specifications COLR Parameter COLR Section COLR Page 2.1.1 Reactor Core Safety Limits RCS Temperature and Pressure Safety Limits 2.1 9
3.1.1 Shutdown Margin Shutdown Margin 2.2 9
3.1.3 Moderator Temperature Coefficient MTC 2.3 11 3.1.4 Rod Group Alignment Limits Shutdown Margin 2.2 9
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
Rod Insertion Limits 2.5 11 3.1.8 Physics Tests Exceptions Shutdown Margin 2.2 9
3.2.1 Heat Flux Hot Channel Factor FQ 2.6 15 AFD 2.8 24 OTT 2.9 27 Penalty Factors 2.6 17 3.2.2 Nuclear Enthalpy Rise Hot Channel FH 2.7 23 Factor Penalty Factors 2.7 24 3.2.3 Axial Flux Difference AFD 2.8 24 3.3.1 Reactor Trip System Instrumentation OTT 2.9 27 OPT 2.9 28 3.3.9 Boron Dilution Mitigation System Reactor Makeup Water Flow Rate 2.10 29 3.4.1 RCS Pressure, Temperature and Flow limits for DNB RCS Pressure, Temperature and Flow 2.11 29 3.5.1 Accumulators Max and Min Boron Conc.
2.12 29 3.5.4 Refueling Water Storage Tank Max and Min Boron Conc.
2.13 29 3.7.15 Spent Fuel Pool Boron Concentration Min Boron Concentration 2.14 31 3.9.1 Refueling Operations - Boron Concentration Min Boron Concentration 2.15 31 5.6.5 Core Operating Limits Report (COLR)
Analytical Methods 1.1 6
The Selected License Commitments that reference this report are listed below:
SLC Section Selected Licensing Commitment COLR Parameter COLR Section COLR Page 16.7-9.3 Standby Shutdown System Standby Makeup Pump Water Supply 2.16 32 16.9-11 Boration Systems - Borated Water Source - Shutdown Borated Water Volume and Conc.
for BAT/RWST 2.17 32 16.9-12 Boration Systems - Borated Water Source - Operating Borated Water Volume and Conc.
for BAT/RWST 2.18 33
CNEI-0400-24 Page 6 of 35 Revision 28 Catawba 1 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 C1C16
- 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 C1C16
- 4. WCAP-12945-P-A, Volume 1 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).
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 C1C16
CNEI-0400-24 Page 7 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report 1.1 Analytical Methods (continued)
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, 1991, republished December 2000
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 C1C16
- 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 C1C16
CNEI-0400-24 Page 8 of 35 Revision 28 Catawba 1 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-2011PA, "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-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" (Framatome ANP Proprietary)
Revision 1 SER Date: January 14, 2004
CNEI-0400-24 Page 9 of 35 Revision 28 Catawba 1 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% K/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% K/K in mode 5.
2.2.3 For TS 3.1.4, shutdown margin shall be greater than or equal to 1.3% K/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% K/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% K/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% K/K in mode 2 during Physics Testing.
CNEI-0400-24 Page 10 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 1 Reactor Core Safety Limits Four Loops in Operation 580 590 600 610 620 630 640 650 660 670 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Fraction of Rated Thermal Power RCS Tavg (°F)
DO NOT OPERATE IN THIS AREA 2100 psia 2280 psia 2400 psia 1945 psia ACCEPTABLE
CNEI-0400-24 Page 11 of 35 Revision 28 Catawba 1 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 K/K/°F.
The EOC, ARO, RTP MTC shall be less negative than the -4.3E-04 K/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 K/K/°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 K/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. Shutdown banks are withdrawn in sequence and with no overlap.
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.
CNEI-0400-24 Page 12 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 2 Moderator Temperature Coefficient Upper Limit Versus Power Level 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0
10 20 30 40 50 60 70 80 90 100 Percent of Rated Thermal Power Moderator Temperature Coefficient (1.0E-04 DK/K/F)
Unacceptable Operation Acceptable Operation NOTE: Compliance with Technical Specification 3.1.3 may require rod withdrawal limits.
Refer to the Unit 1 ROD manual for details.
CNEI-0400-24 Page 13 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 3 Control Bank Insertion Limits Versus Percent Rated Thermal Power 0
20 40 60 80 100 120 140 160 180 200 220 0
10 20 30 40 50 60 70 80 90 100 Percent of Rated Thermal Power Rod Insertion Position (Steps Withdrawn)
(29.6%, 231)
(80.0%, 231)
Fully Withdrawn (Maximum = 231) 231 Control Bank B Control Bank C Control Bank D (0%, 163)
(0%, 47)
(30%, 0)
(100%, 161)
Fully Withdrawn (Minimum = 222)
The Rod Insertion Limits (RIL) for Control Bank D (CD), Control Bank C (CC), and Control Bank B (CB) can be calculated by:
{
}
{
}
{
}
Power Thermal Rated P
where P
P RIL CB Bank P
P RIL CC Bank P
P RIL CD Bank 6.
29 0
163
)
(
3.2 80 0
47
)
(
3.2 100 30 69
)
(
3.2
=
+
=
+
=
=
NOTE: Compliance with Technical Specification 3.1.3 may require rod withdrawal limits.
Refer to the Unit 1 ROD manual for details.
CNEI-0400-24 Page 14 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Table 1 Control Bank Withdrawal Steps and Sequence Control Control Control Control Control Control Control Control Bank A Bank B Bank C Bank D 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
0 222 Stop 106 0
0 223 Stop 107 0
0 222 116 0 Start 0
223 116 0 Start 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 Control Control Control Control Control Control Control Control Bank A Bank B Bank C Bank D 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 Control Control Control Control Control Control Control Control Bank A Bank B Bank C Bank D 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
0 226 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 Control Control Control Control Control Control Control Control Bank A Bank B Bank C Bank D 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
0 228 Stop 112 0
0 229 Stop 113 0
0 228 116 0 Start 0
229 116 0 Start 0
228 228 Stop 112 0
229 229 Stop 113 0
228 228 116 0 Start 229 229 116 0 Start 228 228 228 Stop 112 229 229 229 Stop 113 Control Control Control Control Control Control Control Control Bank A Bank B Bank C Bank D 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
0 230 Stop 114 0
0 231 Stop 115 0
0 230 116 0 Start 0
231 116 0 Start 0
230 230 Stop 114 0
231 231 Stop 115 0
230 230 116 0 Start 231 231 116 0 Start 230 230 230 Stop 114 231 231 231 Stop 115 Fully Withdrawn at 222 Steps Fully Withdrawn at 223 Steps Fully Withdrawn at 224 Steps Fully Withdrawn at 225 Steps Fully Withdrawn at 226 Steps Fully Withdrawn at 227 Steps Fully Withdrawn at 230 Steps Fully Withdrawn at 231 Steps Fully Withdrawn at 228 Steps Fully Withdrawn at 229 Steps
CNEI-0400-24 Page 15 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report 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 RTP Q
- K(Z)/P for P > 0.5 F RTP Q
- 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 3.1% to account for manufacturing tolerances and 5% to account for measurement uncertainty when comparing against the LCO limit. The more conservative of the manufacturing tolerances for RFA/NGF fuel (3%) or MOX fuel (3.1%) is used when comparing against the LCO limit due to input limitations in monitoring software. The manufacturing tolerance and measurement uncertainty are implicitly included in the FQ surveillance limits as defined below for COLR Sections 2.6.5 and 2.6.6.
2.6.2 FRTP Q
= 2.60 x K(BU) for RFA and NGF fuel FRTP Q
= 2.40 x K(BU) for MOX fuel 2.6.3 K(Z) is the normalized FQ(X,Y,Z) as a function of core height. K(Z) for Westinghouse RFA and NGF fuel is provided in Figure 4, and the K(Z) for MOX fuel is provided in Figure 5.
2.6.4 K(BU) is the normalized FQ(X,Y,Z) as a function of burnup. K(BU) for Westinghouse RFA and NGF fuel is provided in Figure 6, and the K(BU) for MOX fuel is provided in Figure 7.
The following parameters are required for core monitoring per the Surveillance Requirements of Technical Specification 3.2.1:
2.6.5 [F L
Q(X,Y,Z)]OP =
F D
Q(X,Y,Z)
- MQ(X,Y,Z)
UMT
- TILT
CNEI-0400-24 Page 16 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report where:
[
L Q
F (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.
L Q
F (X,Y,Z)
OP includes allowances for calculational and measurement uncertainties.
D Q
F (X,Y,Z) = Design power distribution for FQ.
D Q
F (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 = 1.031). The more conservative of the manufacturing tolerances for RFA/NGF fuel (3%) or MOX fuel (3.1%) is used when comparing against the FQ LOCA surveillance limit due to input limitations in monitoring software. The manufacturing tolerances for RFA/NGF fuel and MOX fuel is implicitly included in the FQ LOCA surveillance limits (Mq).
TILT = Peaking penalty that accounts for allowable quadrant power tilt ratio of 1.02. (TILT = 1.035) 2.6.6 [F L
Q(X,Y,Z)]
RPS =
F D
Q(X,Y,Z)
- MC(X,Y,Z)
UMT
- TILT where:
[F L
Q(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
CNEI-0400-24 Page 17 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report QPTR limits. [F L
Q(X,Y,Z)]RPS includes allowances for calculational and measurement uncertainties.
F D
Q(X,Y,Z) = Design power distributions for FQ. F D
Q(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 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-2 for normal operating conditions and in Appendix Table A-5 for power escalation testing during initial startup operations.
MT = Engineering Hot Channel Factor. (MT = 1.031). The more conservative of the manufacturing tolerances for RFA/NGF fuel (3%) or MOX fuel (3.1%) is used when comparing against the FQ RPS surveillance limit due to input limitations in monitoring software. The manufacturing tolerances for RFA/NGF fuel and MOX fuel is implicitly included in the FQ RPS surveillance limits (MC).
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 OTT trip setpoint required to compensate for each 1% that M
Q F
(X,Y,Z) exceeds L
Q F (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-0400-24 Page 18 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 4 K(Z), Normalized FQ(X,Y,Z) as a Function of Core Height for RFA and NGF Fuel 0.000 0.200 0.400 0.600 0.800 1.000 1.200 0.0 2.0 4.0 6.0 8.0 10.0 12.0 Core Height (ft)
K(Z)
(0.0, 1.00)
(4.0, 1.00)
(12.0, 0.9615)
(4.0, 0.9615)
Core Height (ft)
K(Z) 0.0 1.000
<4 1.000
>4 0.9615 12.0 0.9615
CNEI-0400-24 Page 19 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 5 K(Z), Normalized FQ(X,Y,Z) as a Function of Core Height for MOX Fuel 0.000 0.200 0.400 0.600 0.800 1.000 1.200 0.0 2.0 4.0 6.0 8.0 10.0 12.0 Core Height (ft)
K(Z)
(0.0, 1.00)
(8.0, 1.00)
(12.0, 0.95)
Core Height (ft)
K(Z) 0.0 1.000 8.0 1.000 12.0 0.950
CNEI-0400-24 Page 20 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 6 K(BU), Normalized FQ(X,Y,Z) as a Function of Burnup for RFA and NGF Fuel 0.000 0.200 0.400 0.600 0.800 1.000 1.200 0.0 10.0 20.0 30.0 40.0 50.0 60.0 Burnup (GWD/MTU)
K(BU)
(0.0, 1.00)
(30.0, 1.00)
(60.0, 1.00)
Core Burnup (GWD/MTU)
K(BU) 0.0 1.000 30.0 1.000 60.0 1.000
CNEI-0400-24 Page 21 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 7 K(BU), Normalized FQ(X,Y,Z) as a Function of Burnup for MOX Fuel 0.000 0.200 0.400 0.600 0.800 1.000 1.200 0.0 10.0 20.0 30.0 40.0 50.0 60.0 Burnup (GWD/MTU)
K(BU)
(0.0, 1.00)
(30.0, 1.00)
(60.0, 0.80)
Core Burnup (GWD/MTU)
K(BU) 0.0 1.000 30.0 1.000 60.0 0.800
CNEI-0400-24 Page 22 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Table 2 FQ(X,Y,Z) and FH(X,Y) Penalty Factors For Tech Spec Surveillances 3.2.1.2, 3.2.1.3 and 3.2.2.2 Burnup FQ(X,Y,Z)
FH(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 2.00 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 2.00 450 2.00 2.00 475 2.00 2.00 480 2.00 2.00 505 2.00 2.00 509 2.00 2.00 524 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 FH(X,Y) for compliance with the Tech Spec Surveillances 3.2.1.2, 3.2.1.3 and 3.2.2.2.
CNEI-0400-24 Page 23 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report 2.7 Nuclear Enthalpy Rise Hot Channel Factor - FH(X,Y) (TS 3.2.2)
The FH steady-state limits referred to in Technical Specification 3.2.2 are defined by the following relationship.
2.7.1 LCO L
H Y)]
(X,
[F
= MARP (X,Y)
- 1.0 + 1 RRH * (1.0 - P) where:
LCO L
H Y)]
(X,
[F 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, M
H 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 [
L H
F(X,Y)]
SURV =
TILT UMR Y)
(X, M
Y)
(X, F
H D
H
where:
[
L H
F(X,Y)]
SURV = Cycle dependent maximum allowable design peaking factor that ensures that the FH(X,Y) limit is not exceeded for operation within the AFD, RIL, and QPTR limits.
L H
F(X,Y)
SURV includes allowances for calculational and measurement uncertainty.
F D
H (X,Y) = Design power distribution for FH. F D
H (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-0400-24 Page 24 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report MH(X,Y) = The margin remaining in core location X,Y relative to the Operational DNB limits in the transient power distribution.
MH(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 MH(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, M
H F(X,Y) exceeds its limit. (0 < P < 1.0) 2.7.4 TRH = 0.04 where:
TRH = Reduction in OTT K1 setpoint required to compensate for each 1% that the measured radial peak, FH(X,Y) exceeds its limit.
2.7.5 FH(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 8.
CNEI-0400-24 Page 25 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Table 3 Maximum Allowable Radial Peaks (MARPS)
RFA Fuel MARPs 100% Full Power Core Height (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 1.847 1.882 1.947 1.992 1.974 2.107 2.050 2.009 1.933 1.863 1.778 1.315 1.246 1.20 1.843 1.879 1.938 1.992 1.974 2.107 2.019 1.978 1.901 1.831 1.785 1.301 1.224 2.40 1.846 1.876 1.931 1.981 1.974 2.084 1.994 1.952 1.876 1.805 1.732 1.476 1.462 3.60 1.843 1.869 1.920 1.964 1.974 2.065 1.988 1.951 1.874 1.801 1.701 1.467 1.453 4.80 1.838 1.868 1.906 1.945 1.974 2.006 1.945 1.922 1.862 1.800 1.718 1.329 1.288 6.00 1.834 1.856 1.891 1.921 1.946 1.934 1.880 1.863 1.802 1.747 1.673 1.383 1.317 7.20 1.828 1.845 1.871 1.893 1.887 1.872 1.809 1.787 1.732 1.681 1.618 1.318 1.277 8.40 1.823 1.829 1.847 1.857 1.816 1.795 1.739 1.722 1.675 1.630 1.551 1.247 1.209 9.60 1.814 1.812 1.809 1.792 1.738 1.724 1.678 1.665 1.621 1.578 1.492 1.191 1.137 10.80 1.798 1.784 1.761 1.738 1.697 1.682 1.626 1.605 1.558 1.512 1.430 1.149 1.096 11.40 1.789 1.765 1.725 1.684 1.632 1.614 1.569 1.557 1.510 1.466 1.392 1.113 1.060 Axial Peak MOX Fuel MARPs 100% Full Power Core Height (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 1.746 1.777 1.834 1.884 1.925 1.951 1.860 1.803 1.719 1.643 1.568 1.256 1.195 1.20 1.746 1.774 1.826 1.872 1.912 1.931 1.849 1.806 1.724 1.648 1.546 1.207 1.145 2.40 1.743 1.769 1.816 1.854 1.889 1.906 1.827 1.790 1.719 1.653 1.539 1.171 1.117 3.60 1.740 1.763 1.802 1.836 1.860 1.849 1.797 1.777 1.719 1.653 1.559 1.182 1.107 4.80 1.736 1.755 1.787 1.816 1.802 1.794 1.741 1.724 1.675 1.623 1.574 1.204 1.151 6.00 1.732 1.747 1.770 1.792 1.751 1.737 1.688 1.672 1.624 1.578 1.526 1.287 1.248 7.20 1.727 1.738 1.752 1.741 1.696 1.683 1.634 1.618 1.574 1.531 1.477 1.244 1.206 8.40 1.723 1.725 1.731 1.690 1.641 1.627 1.580 1.567 1.525 1.484 1.429 1.207 1.167 9.60 1.712 1.709 1.685 1.638 1.589 1.574 1.529 1.520 1.481 1.442 1.386 1.170 1.129 10.80 1.701 1.687 1.640 1.590 1.540 1.524 1.482 1.472 1.435 1.401 1.344 1.147 1.109 12.00 1.694 1.670 1.619 1.569 1.518 1.505 1.462 1.453 1.417 1.386 1.334 1.135 1.096 Axial Peak NGF Fuel MARPs 100% Full Power Core Height (ft) 1.05 1.2 1.4 1.6 1.8 2.1 3.25 0.12 1.771 1.871 1.805 2.049 1.931 1.786 1.266 2.40 1.760 1.853 1.805 1.993 1.870 1.724 1.442 4.80 1.757 1.824 1.805 1.884 1.809 1.693 1.261 7.20 1.745 1.784 1.805 1.735 1.659 1.553 1.227 9.60 1.729 1.723 1.652 1.587 1.527 1.402 1.059 11.40 1.707 1.642 1.550 1.477 1.416 1.304 1.003 Axial Peak
CNEI-0400-24 Page 26 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 8 Percent of Rated Thermal Power Versus Percent Axial Flux Difference Limits 0
10 20 30 40 50 60 70 80 90 100
-50
-40
-30
-20
-10 0
10 20 30 40 50 Axial Flux Difference (% Delta I)
Percent of Rated Thermal Power
(+10, 100)
(-18, 100)
(-36, 50)
(+21, 50)
Acceptable Operation Unacceptable Operation Unacceptable Operation NOTE: Compliance with Technical Specification 3.2.1 may require more restrictive AFD limits. Refer to the Unit 1 ROD manual for operational AFD limits.
CNEI-0400-24 Page 27 of 35 Revision 28 Catawba 1 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 T Setpoint Parameter Values Parameter Nominal Value Nominal Tavg at RTP T' < 585.1 °F Nominal RCS Operating Pressure P' = 2235 psig Overtemperature T reactor trip setpoint K1 = 1.1978 Overtemperature T reactor trip heatup setpoint penalty coefficient K2 = 0.03340/oF Overtemperature T reactor trip depressurization setpoint penalty coefficient K3 = 0.001601/psi Time constants utilized in the lead-lag compensator for T 1 = 8 sec.
2 = 3 sec.
Time constant utilized in the lag compensator for T 3 = 0 sec.
Time constants utilized in the lead-lag compensator for Tavg 4 = 22 sec.
5 = 4 sec.
Time constant utilized in the measured Tavg lag compensator 6 = 0 sec.
f1(I) "positive" breakpoint
= 19.0 %I f1(I) "negative" breakpoint
= N/A*
f1(I) "positive" slope
= 1.769 %T0/ %I f1(I) "negative" slope
= N/A*
The f1(I) negative breakpoints and slopes for OTT are less restrictive than the OPT f2(I) negative breakpoint and slope. Therefore, during a transient which challenges the negative imbalance limits the OPT f2(I) limits will result in a reactor trip before the OTT f1(I) limits are reached. This makes implementation of an OTT f1(I) negative breakpoint and slope unnecessary.
CNEI-0400-24 Page 28 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report 2.9.2 Overpower T Setpoint Parameter Values Parameter Nominal Value Nominal Tavg at RTP T" < 585.1 ºF Overpower T reactor trip setpoint K4 = 1.0864 Overpower T reactor trip penalty K5 = 0.02 / °F for increasing Tavg K5 = 0.00 / °F for decreasing Tavg Overpower T reactor trip heatup setpoint penalty coefficient (for T>T)
K6 = 0.001179/oF for T > T
K6 = 0.0 /°F for T < T
Time constants utilized in the lead-lag compensator for T 1 = 8 sec.
2 = 3 sec.
Time constant utilized in the lag compensator for T 3 = 0 sec.
Time constant utilized in the measured Tavg lag compensator 6 = 0 sec.
Time constant utilized in the rate-lag controller for Tavg 7 = 10 sec.
f2(I) "positive" breakpoint
= 35.0 %I f2(I) "negative" breakpoint
= -35.0 %I f2(I) "positive" slope
= 7.0 %T0/ %I f2(I) "negative" slope
= 7.0 %T0/ %I
CNEI-0400-24 Page 29 of 35 Revision 28 Catawba 1 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 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.
2,975 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 concentration.
2,700 ppm Refueling Water Storage Tank maximum boron concentration.
2,975 ppm
CNEI-0400-24 Page 30 of 35 Revision 28 Catawba 1 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
< 587.2 ºF meter 3
< 586.9 ºF computer 4
< 587.7 ºF computer 3
< 587.5 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
> 388,000 gpm
CNEI-0400-24 Page 31 of 35 Revision 28 Catawba 1 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-0400-24 Page 32 of 35 Revision 28 Catawba 1 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) during Mode 4 with any RCS cold leg temperature < 210OF, 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 to maintain SDM at 68oF 2000 gallons Boric Acid Tank Minimum Shutdown Volume (Includes the additional volumes listed in SLC 16.9-11) 13,086 gallons (14.9%)
NOTE: When cycle burnup is > 500 EFPD, Figure 9 may be used to determine the required Boric Acid Tank Minimum Level.
Refueling Water Storage Tank minimum boron concentration 2,700 ppm Volume of 2,700 ppm boric acid solution required to maintain SDM at 68 oF 7,000 gallons Refueling Water Storage Tank Minimum Shutdown Volume (Includes the additional volumes listed in SLC 16.9-11) 48,500 gallons (8.7%)
CNEI-0400-24 Page 33 of 35 Revision 28 Catawba 1 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 > 210OF.
Parameter Limit Boric Acid Tank minimum boron concentration 7,000 ppm Volume of 7,000 ppm boric acid solution required to maintain SDM at 210oF 13,500 gallons Boric Acid Tank Minimum Shutdown Volume (Includes the additional volumes listed in SLC 16.9-12) 25,200 gallons (45.8%)
NOTE: When cycle burnup is > 500 EFPD, Figure 9 may be used to determine the required Boric Acid Tank Minimum Level.
Refueling Water Storage Tank minimum boron concentration 2,700 ppm Volume of 2,700 ppm boric acid solution required to maintain SDM at 210 oF 57,107 gallons Refueling Water Storage Tank Minimum Shutdown Volume (Includes the additional volumes listed in SLC 16.9-12) 98,607 gallons (22.0%)
CNEI-0400-24 Page 34 of 35 Revision 28 Catawba 1 Cycle 16 Core Operating Limits Report Figure 9 Boric Acid Storage Tank Indicated Level Versus Primary Coolant Boron Concentration (Valid When Cycle Burnup is > 500 EFPD)
This figure includes additional volumes listed in SLC 16.9-11 and 16.9-12 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 0
200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 Primary Coolant Boron Concentration (ppmb)
BAT Level (% Level)
Acceptable Operation Unacceptable Operation RCS Boron Concentration BAT Level (ppm)
(%level) 0 < 300 45.8 300 < 500 40.0 500 < 700 37.0 700 < 1000 30.0 1000 < 1300 14.9 1300 < 2700 9.8
> 2700 9.8
CNEI-0400-24 Page 35 of 35 Revision 28 Catawba 1 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 a need to access this information.
Appendix A is included in the COLR copy transmitted to the NRC.