ML24108A038
| ML24108A038 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 04/16/2024 |
| From: | Tony Brown Vistra Operations Company |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| L-24-018 | |
| Download: ML24108A038 (27) | |
Text
L-24-018 April 16, 2024 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
Davis-Besse Nuclear Power Station, Unit No.1 Docket No. 50-346, License No. NPF-3 Core Operating Limits Report, Cycle 24, Revision 0 Davis-Besse Nuclear Power Station Terry J. Brown Site Vice President 5501 N. State Route 2 Oak Harbor, Ohio 43449 Enclosed is Revision O of the Davis-Besse Nuclear Power Station, Unit No. 1 (DBNPS) Cycle 24 Core Operating Limits Report. Submittal of this report is in accordance with DBNPS Technical Specification 5.6.3, "CORE OPERATING LIMITS REPORT (COLR)."
There are no regulatory commitments contained in this submittal. If there are any questions, or if additional information is required, please contact Mr. Jack Hicks, Senior Manager, Licensing, at (254) 897-6725 or Jack.Hicks@luminant.com.
Enclosure:
Cycle 24, Core Operating Limits Report, Revision 0 cc:
NRC Region Ill Administrator NRC Resident Inspector NRR Project Manager Utility Radiological Safety Board 6555 SIERRA DRIVE IRVl t;G TEXAS 750.59 o 214 - 817 4600 VISTRACORPCOM
L-24-018 Davis-Besse Unit 1 Cycle 24, Core Operating Limits Report, Revision 0 (25 pages follow)
Davis-Besse Unit 1 Cycle 24 Davis-Besse Cycle 24 COLA Page 1 of 25 Revision 0 CORE OPERATING LIMITS REPORT Prepared by -
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Davis-Besse Cycle 24 COLR Page 2 of 25 Revision 0 1.0 Core Operating Limits This CORE OPERATING LIMITS REPORT for DB-1 Cycle 24 has been prepared in accordance with the requirements of Technical Speci"cation 5.6.3. The Core Operating Limits have been developed using the methodology provided in Reference 2.0 (1). The licensed length of Cycle 24 is 712 EFPD.
The following cycle-speci"c core Operating Limits, Protective Limit and Flux - Flux -Flow Reactor Protection System Allowable Values are included in this report:
1 SL 2.1.1.1 Reactor Core Safety Limits 2
LCO 3.1.1 SHUTDOWN MARGIN (SDM) 3 LCO 3.1.3 Moderator Temperature Coef"cient (MTC) 4 LCO 3.1.7 Position Indicator Channels 5
LCO 3.1.8 PHYSICS TESTS Exceptions - MODE 1 6
LCO 3.1.9 PHYSICS TESTS Exceptions - MODE 2 7
LCO 3.2.1 Regulating Rod Insertion Limits 8
LCO 3.2.2 AXIAL POWER SHAPING ROD (APSR) Insertion Limits 9
LCO 3.2.3 AXIAL POWER IMBALANCE Operating Limits 10 LCO 3.2.4 QUADRANT POWER TILT (QPT) 11 LCO 3.2.5 Power Peaking Factors 12 LCO 3.3.1 Reactor Protection Systems (RPS) Instrumentation 13 LCO 3.9.1 Boron Concentration 14 TRM 8.1.3 Rod Program 2.0 References
- 1. BAW-10179P-A, Rev. 9, "Safety Criteria and Methodology for Acceptable Cycle Reload Analyses", November 2017.
Davis-Besse Cycle 24 COLR Page 3 of 25 Revision 0 Table of Contents Page Reactor Core Safety Limits Figure 1 AXIAL POWER IMBALANCE Protective Limits Davis-Besse 1, Cycle 24 5
Table 1 Shutdown Margin Requirements for Davis-Besse, Cycle 24 6
Moderator Temperature Coef"cient (MTC)
Table 2 Moderator Temperature Coef"cient Limit for Davis-Besse, Cycle 24 7
Position Indicator Channels Table 3 Absolute Position Indicator (API) / Relative Position Indicator (RPI)
Agreement Limit for Davis-Besse, Cycle 24 8
Regulating Rod Insertion Limits Figure 2a Regulating Group Position Operating Limits 0 to 300 +/- 10 EFPD, Four RC Pumps Davis-Besse 1, Cycle 24 9
Figure 2b Regulating Group Position Operating Limits After 300 +/- 10 EFPD, Four RC Pumps Davis-Besse 1, Cycle 24 10 Figure 2c Regulating Group Position Operating Limits 0 to 300 +/- 10 EFPD, Three RC Pumps Davis-Besse 1, Cycle 24 11 Figure 2c Regulating Group Position Operating Limits After 300 +/- 10 EFPD, Three RC Pumps Davis-Besse 1, Cycle 24 12 AXIAL POWER SHAPING ROD (APSR) Insertion Limits Figure 3 APSR Position Operating Limits for Davis-Besse, Cycle 24 13 AXIAL POWER IMBALANCE Operating Limits Figure 4a AXIAL POWER IMBALANCE Operating Limits 0 to 50 +/- 10 EFPD, Four RC Pumps Davis-Besse 1, Cycle 24 14 Figure 4b AXIAL POWER IMBALANCE Operating Limits 50 +/- 10 EFPD to EOC, Four RC Pumps Davis-Besse 1, Cycle 24 15 Figure 4c AXIAL POWER IMBALANCE Operating Limits 0 to 50 +/- 10 EFPD, Three RC Pumps Davis-Besse 1, Cycle 24 16 Figure 4d AXIAL POWER IMBALANCE Operating Limits 50 +/- 10 EFPD to EOC, Three RC Pumps Davis-Besse 1, Cycle 24 17
Davis-Besse Cycle 24 COLR Page 4 of 25 Revision 0 Table of Contents (cont.)
Page QUADRANT POWER TILT (QPT)
Table 4 QUADRANT POWER TILT Limits for Davis-Besse, Cycle 24 18 Power Peaking Factors Table 5 Power Peaking Factors - FQ for Davis-Besse, Cycle 24 19 Table 6 Power Peaking Factors - FNH for Davis-Besse, Cycle 24 21 Figure 5 Maximum Allowable Radial Peak for FNH for Davis-Besse, Cycle 24 21 Table 7 Maximum Allowable Radial Peak for FNH for Davis-Besse, Cycle 24 22 Reactor Protection System (RPS) Instrumentation Figure 6 Flux-Flux-Flow (or Power/Imbalance/Flow) Allowable Values Davis-Besse 1, Cycle 24 23 Boron Concentration Table 8 Refueling Boron Concentration Limit for Davis-Besse, Cycle 24 24 Rod Program Figure 7 Control Rod Core Locations and Group Assignments for Davis-Besse, Cycle 24 25
Davis-Besse Cycle 24 COLR Page 5 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110 120
-80
-70
-60
-50
-40
-30
-20
-10 0
10 20 30 40 50 60 70 80 Power (Percent of RATED THERMAL POWER)
AXIAL POWER IMBALANCE, %
This Figure is referred to by Technical Specification 2.1.1.1 ACCEPTABLE OPERATION FOR SPECIFIED RC PUMP COMBINATION AXIAL POWER IMBALANCE Protective Limits Davis-Besse 1, Cycle 24 Figure 1 UNACCEPTABLE OPERATION UNACCEPTABLE OPERATION 3 PUMP LIMIT 4 PUMP LIMIT 4
380,000 389,500 3
283,860 290,957 Pumps Operating Reactor Coolant Flow, gpm Required Measured Flow to Ensure Compliance, gpm 110.2
-35.90 28.80 103.8
-42.20 86.5
-42.20 38.10 0.0
-42.20 38.10 4 Pump Power Level Negative Imbalance Positive Imbalance 90.0
-35.90 28.80 83.6
-42.20 66.3
-42.20 38.10 0.0
-42.20 38.10 Positive Imbalance 3 Pump Power Level Negative Imbalance
Davis-Besse Cycle 24 COLR Page 6 of 25 Revision 0 Table 1 Shutdown Margin Requirements for Davis-Besse, Cycle 24 Verify SHUTDOWN MARGIN per the table below.
APPLICABILITY REQUIRED SHUTDOWN MARGIN TECHNICAL SPECIFICATION LCO REFERENCE MODE 1*
1 %k/k***
3.1.4, 3.1.5 MODE 2*
1 %k/k 3.1.4, 3.1.5, 3.3.9 MODE 3 1 %k/k 3.1.1, 3.3.9 MODE 4 1 %k/k 3.1.1, 3.3.9 MODE 5 1 %k/k 3.1.1, 3.3.9 MODE 1 PHYSICS TESTS Exceptions**
1 %k/k 3.1.8 MODE 2 PHYSICS TESTS Exceptions 1 %k/k 3.1.9
- The required Shutdown Margin capability of 1 %k/k in MODE 1 and MODE 2 is preserved by the Regulating Rod Insertion Limits speci"ed in COLR Figures 2a through 2d as required by Technical Speci"cation 3.2.1.
- Entry into Mode 1 Physics Tests Exceptions is not supported by existing analyses. For example, Regulating Rod Shutdown Margin Insertion Limits assumptions may not be met and as such requires actual shutdown margin to be 1 %k/k via alternate veri"cation or calculation.
Davis-Besse Cycle 24 COLR Page 7 of 25 Revision 0 Table 2 Moderator Temperature Coef"cient Limit for Davis-Besse, Cycle 24 These limits are referred to by Technical Speci"cation 3.1.3
- 1. Lower Limit:
MTC at HFP -4.000x10-4 k/k/F (-40.00 pcm/F)
- 2. The following Upper Limits may not be exceeded without prior NRC approval:
MTC <0.9x10-4 k/k/F when Thermal Power < 95 %RTP MTC <0.0x10-4 k/k/F when Thermal Power 95 %RTP
- 3. The following Upper Limits may not be exceeded for operation in Modes 1 and 2:
0.0E+00 1.0E-05 2.0E-05 3.0E-05 4.0E-05 5.0E-05 6.0E-05 7.0E-05 8.0E-05 9.0E-05 1.0E-04 0
20 40 60 80 100 Moderator Temperature Coefficient (k/k/°F)
Percent Full Power
Davis-Besse Cycle 24 COLR Page 8 of 25 Revision 0 Table 3 Absolute Position Indicator (API) / Relative Position Indicator (RPI)
Agreement Limit for Davis-Besse, Cycle 24 This limit is referred to by Technical Speci"cation 3.1.7 The absolute position indicator channels and the relative position indicator channels agree within 3.00%.
Davis-Besse Cycle 24 COLR Page 9 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110 0
25 50 75 100 125 150 175 200 225 250 275 300 Power (Percent of RATED THERMAL POWER)
Rod Index, %Withdrawn This Figure is referred to by Technical Specifications 3.2.1 Shutdown Margin Limit Acceptable Operation Unacceptable Operation Operation Restricted Regulating Group Position Operating Limits 0 to 300 +10 EFPD, Four RC Pumps Davis-Besse 1, Cycle 24 Figure 2a 0
75 100 0
25 75 100 Group 5 Group 6 25 100 Group 7 0
Note 1: A Rod Group overlap of 25 +/- 5% between sequential withdrawn groups 5 and 6, and 6 and 7, shall be maintained.
Note 2: Instrument error is accounted for in these Operating Limits.
Note 3: Maximum plotted power level is 100.37 %RTP.
Power RI 100.37 153.20 58.00 95.50 23.00 25.50 12.10 0.00 SDM Limit Power RI 100.37 300.00 100.37 277.40 90.00 266.50 78.00 251.50 58.00 206.50 23.00 25.50 12.10 0.00 RI Limit
Davis-Besse Cycle 24 COLR Page 10 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110 0
25 50 75 100 125 150 175 200 225 250 275 300 Power (Percent of RATED THERMAL POWER)
Rod Index, %Withdrawn This Figure is referred to by Technical Specifications 3.2.1 Shutdown Margin Limit Acceptable Operation Unacceptable Operation Operation Restricted Regulating Group Position Operating Limits After 300 +10 EFPD, Four RC Pumps Davis-Besse 1, Cycle 24 Figure 2b 0
75 100 0
25 75 100 Group 5 Group 6 25 100 Group 7 0
Note 1: A Rod Group overlap of 25 +/- 5% between sequential withdrawn groups 5 and 6, and 6 and 7, shall be maintained.
Note 2: Instrument error is accounted for in these Operating Limits.
Note 3: Maximum plotted power level is 100.37 %RTP.
Power RI 100.37 237.40 58.00 175.50 23.00 129.50 2.70 0.00 SDM Limit Power RI 100.37 300.00 100.37 277.40 90.00 266.50 78.00 251.50 58.00 206.50 23.00 129.50 2.70 0.00 RI Limit
Davis-Besse Cycle 24 COLR Page 11 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110 0
25 50 75 100 125 150 175 200 225 250 275 300 Power (Percent of RATED THERMAL POWER)
Rod Index, %Withdrawn This Figure is referred to by Technical Specifications 3.2.1 Shutdown Margin Limit Acceptable Operation Unacceptable Operation Operation Restricted Regulating Group Position Operating Limits 0 to 300 +10 EFPD, Three RC Pumps Davis-Besse 1, Cycle 24 Figure 2c 0
75 100 0
25 75 100 Group 5 Group 6 25 100 Group 7 0
Note 1: A Rod Group overlap of 25 +/- 5% between sequential withdrawn groups 5 and 6, and 6 and 7, shall be maintained.
Note 2: Instrument error is accounted for in these Operating Limits.
Note 3: Maximum plotted power level is 75.37 %RTP.
Power RI 75.37 116.90 43.10 77.50 16.80 25.50 8.60 0.00 SDM Limit Power RI 75.37 300.00 75.37 278.10 67.00 266.50 58.00 251.50 43.00 206.50 16.80 25.50 8.60 0.00 RI Limit
Davis-Besse Cycle 24 COLR Page 12 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110 0
25 50 75 100 125 150 175 200 225 250 275 300 Power (Percent of RATED THERMAL POWER)
Rod Index, %Withdrawn This Figure is referred to by Technical Specifications 3.2.1 Shutdown Margin Limit Acceptable Operation Unacceptable Operation Operation Restricted Regulating Group Position Operating Limits After 300 +10 EFPD, Three RC Pumps Davis-Besse 1, Cycle 24 Figure 2d 0
75 100 0
25 75 100 Group 5 Group 6 25 100 Group 7 0
Note 1: A Rod Group overlap of 25 +/- 5% between sequential withdrawn groups 5 and 6, and 6 and 7, shall be maintained.
Note 2: Instrument error is accounted for in these Operating Limits.
Note 3: Maximum plotted power level is 75.37 %RTP.
Power RI 75.37 208.80 43.10 171.50 16.80 129.50 1.60 0.00 SDM Limit Power RI 75.37 300.00 75.37 278.10 67.00 266.50 58.00 251.50 43.00 206.50 16.80 129.50 1.60 0.00 RI Limit
Davis-Besse Cycle 24 COLR Page 13 of 25 Revision 0 Figure 3 APSR Position Operating Limits-Davis-Besse, Cycle 24 This Figure is referred to by Technical Speci"cation 3.2.2 Before APSR Pull: 0 EFPD to 660 +/- 10 EFPD, Three or Four RC pumps operation*
Lower Limit: 0 %WD Upper Limit: 100 %WD After APSR Pull: 660 +/- 10 EFPD to End-of-Cycle Three or Four RC pumps operation*
Insertion Prohibited (maintain 99 %WD)**
- Power restricted to 75.37 %RTP for 3-pump operation, however, steam generator analyses limits power to 73.46 %RTP.
- Reinsertion is allowed only during the end of cycle shutdown when the reactor power is equal to, or less than, 30 %RTP.
Davis-Besse Cycle 24 COLR Page 14 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110
-60
-50
-40
-30
-20
-10 0
10 20 30 40 50 60 Power (Percent of RATED THERMAL POWER)
AXIAL POWER IMBALANCE %
This Figure is referred to by Technical Specification 3.2.3 Permissible Operating Region AXIAL POWER IMBALANCE Operating Limits 0 to 50 +/- 10 EFPD, Four RC Pumps Davis-Besse 1, Cycle 24 Figure 4a Restricted Region Restricted Region Note 1: Instrument error is accounted for in these Operating Limits.
Note 2: The Excore Imbalance Operating Limits are available for use when the Full Incore system is non-functional.
Note 3: Maximum plotted power level is 100.37 %RTP.
LEGEND FULL INCORE EXCORE 100.37
-22.99 12.26 92.00
-30.60 21.04 80.00
-30.60 26.32 60.00
-30.60 27.60 0.00
-30.60 27.60 Full Incore Power Negative Imbalance Positive Imbalance 100.37
-15.28 5.22 92.00
-23.62 14.55 80.00
-30.34 25.09 60.00
-28.97 27.60 0.00
-28.97 27.60 Excore Power Negative Imbalance Positive Imbalance
Davis-Besse Cycle 24 COLR Page 15 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110
-60
-50
-40
-30
-20
-10 0
10 20 30 40 50 60 Power (Percent of RATED THERMAL POWER)
AXIAL POWER IMBALANCE %
This Figure is referred to by Technical Specification 3.2.3 Permissible Operating Region AXIAL POWER IMBALANCE Operating Limits 50 +/- 10 EFPD to EOC, Four RC Pumps Davis-Besse 1, Cycle 24 Figure 4b Restricted Region Restricted Region Note 1: Instrument error is accounted for in these Operating Limits.
Note 2: The Excore Imbalance Operating Limits are available for use when the Full Incore system is non-functional.
Note 3: Maximum plotted power level is 100.37 %RTP.
LEGEND FULL INCORE EXCORE 100.37
-22.99 14.45 92.00
-29.72 21.04 80.00
-30.60 26.32 60.00
-30.60 27.60 0.00
-30.60 27.60 Full Incore Power Negative Imbalance Positive Imbalance 100.37
-15.28 7.27 92.00
-21.83 17.05 80.00
-28.81 24.56 60.00
-30.60 27.60 0.00
-30.60 27.60 Excore Power Negative Imbalance Positive Imbalance
Davis-Besse Cycle 24 COLR Page 16 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110
-60
-50
-40
-30
-20
-10 0
10 20 30 40 50 60 Power (Percent of RATED THERMAL POWER)
AXIAL POWER IMBALANCE %
This Figure is referred to by Technical Specification 3.2.3 Permissible Operating Region AXIAL POWER IMBALANCE Operating Limits 0 to 50 +/- 10 EFPD, Three RC Pumps Davis-Besse 1, Cycle 24 Figure 4c Restricted Region Restricted Region Note 1: Instrument error is accounted for in these Operating Limits.
Note 2: The Excore Imbalance Operating Limits are available for use when the Full Incore system is non-functional.
Note 3: Maximum plotted power level is 75.37 %RTP.
LEGEND FULL INCORE EXCORE 75.37
-22.31 12.58 69.00
-28.69 19.14 60.00
-30.60 23.10 45.00
-30.60 27.60 0.00
-30.60 27.60 Full Incore Power Negative Imbalance Positive Imbalance 75.37
-16.18 6.12 69.00
-24.41 15.34 60.00
-30.60 23.10 45.00
-29.30 27.60 0.00
-29.30 27.60 Excore Power Negative Imbalance Positive Imbalance
Davis-Besse Cycle 24 COLR Page 17 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110
-60
-50
-40
-30
-20
-10 0
10 20 30 40 50 60 Power (Percent of RATED THERMAL POWER)
AXIAL POWER IMBALANCE %
This Figure is referred to by Technical Specification 3.2.3 Permissible Operating Region AXIAL POWER IMBALANCE Operating Limits 50 +/- 10 EFPD to EOC, Three RC Pumps Davis-Besse 1, Cycle 24 Figure 4d Restricted Region Restricted Region Note 1: Instrument error is accounted for in these Operating Limits.
Note 2: The Excore Imbalance Operating Limits are available for use when the Full Incore system is non-functional.
Note 3: Maximum plotted power level is 75.37 %RTP.
LEGEND FULL INCORE EXCORE 75.37
-22.31 14.76 69.00
-28.69 19.14 60.00
-30.60 23.10 45.00
-30.60 27.60 0.00
-30.60 27.60 Full Incore Negative Imbalance Positive Imbalance Power 75.37
-16.18 8.17 69.00
-22.62 17.84 60.00
-29.44 23.10 45.00
-30.60 27.60 0.00
-30.60 27.60 Excore Power Negative Imbalance Positive Imbalance
Davis-Besse Cycle 24 COLR Page 18 of 25 Revision 0 Table 4 Quadrant Power Tilt Operating Limits - Davis-Besse, Cycle 24 This Table is referred to by Technical Speci"cation 3.2.4 From 0 EFPD to EOC QUADRANT POWER TILT as measured by:
Steady-state Limit for THERMAL POWER 60 %
(%)
Steady-state Limit for THERMAL POWER > 60 %
(%)
Transient Limit
(%)
Maximum Limit
(%)
Symmetric Incore Detector System 7.90 4.46 10.03 20.00 Minimum Incore Detector System
- 3.20 1.90 4.40 20.00
- These operating limits are based on the condition that no individual long emitter detector affecting the Minimum Incore Detector System tilt calculation exceeds 73% sensitivity depletion, which is the case for cycle 24.
Davis-Besse Cycle 24 COLR Page 19 of 25 Revision 0 Table 5 Power Peaking Factors - FQ Davis-Besse, Cycle 24 These limits are referred to by Technical Speci"cation 3.2.5 Heat Flux Hot Channel Factor - FQ FQ shall be limited by the following relationships:
FQ LHRallow (Bu) / (LHRavg*P) (for P 1.0)
LHRallow (Bu)
= See the following tables LHRavg
= 6.4293 kW/ft at 2817 MWt for all fuel P
= ratio of THERMAL POWER / RATED THERMAL POWER (current fraction of power)
Bu
= fuel burnup (MWd/mtU)
Note:
The measured FQ shall be increased by 1.4% to account for manufacturing tolerances and further increased by 7.5% to account for measurement uncertainty before comparing to the limits. The core monitoring system computer-generated FQ values are augmented by the required uncertainties.
UO2 Fuel (Mark-B-HTP) - All Batches LHRALLOW kW/ft (a)
Core Elevation, ft 0
MWd/mtU 30,000 MWd/mtU 62,000 MWd/mtU 0.0 17.6 17.6 12.6 2.506 17.6 17.6 12.6 4.264 17.4 17.4 12.6 6.021 16.8 16.8 12.6 7.779 16.8 16.8 12.6 9.536 16.2 16.2 12.6 12.0 15.3 15.3 11.9 (a) Linear interpolation for allowable LHR between speci"ed burnup points is valid for these tables.
Davis-Besse Cycle 24 COLR Page 20 of 25 Revision 0 Table 5 (continued) 4 wt% Gadolinia Fuel (Mark-B-HTP) - All Batches LHRALLOW kW/ft (a)
Core Elevation, ft 0
MWd/mtU 30,000 MWd/mtU 55,000 MWd/mtU 0.0 16.2 15.6 12.2 2.506 16.2 15.6 12.2 4.264 16.0 15.4 12.1 6.021 15.4 14.9 12.0 7.779 15.4 14.9 12.0 9.536 14.9 14.4 11.9 12.0 14.1 13.6 11.3 6 wt% Gadolinia Fuel (Mark-B-HTP) - All Batches LHRALLOW kW/ft (a)
Core Elevation, ft 0
MWd/mtU 30,000 MWd/mtU 55,000 MWd/mtU 0.0 15.6 15.3 11.9 2.506 15.6 15.3 11.9 4.264 15.4 15.1 11.9 6.021 14.9 14.6 11.7 7.779 14.9 14.6 11.7 9.536 14.4 14.1 11.7 12.0 13.6 13.3 11.1 8 wt% Gadolinia Fuel (Mark-B-HTP) - All Batches LHRALLOW kW/ft (a)
Core Elevation, ft 0
MWd/mtU 30,000 MWd/mtU 55,000 MWd/mtU 0.0 15.1 14.9 11.6 2.506 15.1 14.9 11.6 4.264 14.9 14.7 11.6 6.021 14.4 14.2 11.5 7.779 14.4 14.2 11.5 9.536 13.9 13.7 11.4 12.0 13.2 13.0 10.8 (a) Linear interpolation for allowable LHR between speci"ed burnup points is valid for these tables.
Davis-Besse Cycle 24 COLR Page 21 of 25 Revision 0 Table 6 Power Peaking Factors - FNH Davis-Besse, Cycle 24 These limits are referred to by Technical Speci"cation 3.2.5 Enthalpy Rise Hot Channel Factors - FNH FNH MARP [1+(1/RH) (1-P/Pm)] (See note below)
MARP
= Maximum Allowable Radial Peak, see MARP Figures and data Tables P
= THERMAL POWER / RATED THERMAL POWER and P 1.0 Pm
= 1.0 for 4-RCP operation Pm
= 0.75 for 3-RCP operation 1/RH
= 0.3 RH
= 3.333 Note:
The measured FNH shall be increased by 5.0% to account for measurement uncertainty prior to comparing to the limits. The core monitoring system-generated FNH values are augmented by the required uncertainties.
PROPRIETARY No FS1-0070183 Rev. 1.0 Handling:
Restricted Framatome Page 13/15 Davis-Besse (DB1) Cycle 24 Task 13/15 Reload Report COLR Inputs Figure 5 Maximum Allowable Radial Peak for FNH Davis-Besse, Cycle 24
- Framatome Inc.
ANP-3977 Revision 0 Davis-Besse Nuclear Power Station Unit 1, Cycle 23 Reload Report Licensing Report Page 8-20 Table 6 Power Peaking Factors - FNH Davis-Besse, Cycle 23 This Table is referred to by Technical Specification 3.2.5 Enthalpy Rise Hot Channel Factors - FNH FNH MARP [1 + (1/RH) (1 - P/Pm)] (see note below)
MARP = Maximum Allowable Radial Peak, see MARP Figures and data Tables P = THERMAL POWER / RATED THERMAL POWER and P 1.0 Pm = 1.0 for 4-RCP operation Pm = 0.75 for 3-RCP operation 1/RH = 0.3 Note: The measured FNH shall be increased by 5.0% to account for measurement uncertainty prior to comparing to the limits. The core monitoring system-generated FNH values are augmented by the required uncertainties.
Table 8-6 For Information Only
- Linear interpolation is acceptable.
Figure 8-9
Davis-Besse Cycle 24 COLR Page 22 of 25 Revision 0 PROPRIETARY No FS1-0070183 Rev. 1.0 Handling:
Restricted Framatome Page 14/15 Davis-Besse (DB1) Cycle 24 Task 13/15 Reload Report COLR Inputs Table 7 Maximum Allowable Radial Peak for FNH Davis-Besse, Cycle 24 Axial Height Axial Height Axial Peak x/L (inches)
Marp Limit Axial Peak x/L (inches)
Marp Limit 1.1 0.0 0.00 1.88299 1.6 0.0 0.00 2.09189 0.1 14.30 1.88398 0.1 14.30 2.03919 0.14 20.02 1.88428 0.14 20.02 2.01827 0.2 28.60 1.88461 0.2 28.60 1.98801 0.4 57.20 1.88490 0.4 57.20 1.86840 0.5 71.50 1.88439 0.5 71.50 1.81257 0.6 85.80 1.88451 0.6 85.80 1.73794 0.8 114.40 1.88421 0.8 114.40 1.59754 0.88 125.84 1.85239 0.88 125.84 1.54331 0.9 128.70 1.83969 0.9 128.70 1.55084 1.0 143.00 1.73842 1
143.00 1.46874 1.2 0.0 0.00 1.96511 1.7 0.0 0.00 1.99604 0.1 14.30 1.96705 0.1 14.30 1.95702 0.14 20.02 1.96804 0.14 20.02 1.93661 0.2 28.60 1.96825 0.2 28.60 1.90615 0.4 57.20 1.96936 0.4 57.20 1.79933 0.5 71.50 1.96984 0.5 71.50 1.74468 0.6 85.80 1.96919 0.6 85.80 1.67736 0.8 114.40 1.84278 0.8 114.40 1.54415 0.88 125.84 1.78287 0.88 125.84 1.49299 0.9 128.70 1.78220 0.9 128.70 1.50138 1.0 143.00 1.67994 1.0 143.00 1.42245 1.3 0.0 0.00 2.05580 1.8 0.0 0.00 1.90606 0.1 14.30 2.05912 0.1 14.30 1.87049 0.14 20.02 2.06036 0.14 20.02 1.85710 0.2 28.60 2.06155 0.2 28.60 1.82954 0.4 57.20 2.06343 0.4 57.20 1.73365 0.5 71.50 2.01583 0.5 71.50 1.67902 0.6 85.80 1.93900 0.6 85.80 1.62023 0.8 114.40 1.77864 0.8 114.4 1.49550 0.88 125.84 1.71670 0.88 125.84 1.44607 0.9 128.70 1.72105 0.9 128.70 1.45590 1.0 143.00 1.61890 1.0 143.00 1.37861 1.4 0.0 0.00 2.15314 1.9 0.0 0.00 1.82131 0.1 14.30 2.15758 0.1 14.30 1.78903 0.14 20.02 2.15910 0.14 20.02 1.78024 0.2 28.60 2.14648 0.2 28.60 1.75713 0.4 57.20 2.01712 0.4 57.20 1.67040 0.5 71.50 1.95015 0.5 71.50 1.61847 0.6 85.80 1.87083 0.6 85.80 1.56653 0.8 114.40 1.71630 0.8 114.40 1.44958 0.88 125.84 1.65545 0.88 125.84 1.40281 0.9 128.70 1.65903 0.9 128.70 1.41322 1.0 143.00 1.57207 1.0 143.00 1.33783 1.5 0.0 0.00 2.17667 0.1 14.30 2.12413 0.14 20.02 2.10403 0.2 28.60 2.07451 0.4 57.20 1.94104 0.5 71.50 1.88067 0.6 85.80 1.80330 0.8 114.40 1.65555 0.88 125.84 1.59706 0.9 128.70 1.60415 1.0 143.00 1.51859 Table 8-7 Framatome - Fuel This document is subject to the restrictions set forth on the first or title page.
Davis-Besse Cycle 24 COLR Page 23 of 25 Revision 0 0
10 20 30 40 50 60 70 80 90 100 110 120
-60
-50
-40
-30
-20
-10 0
10 20 30 40 50 60 Power (Percent of RATED THERMAL POWER)
AXIAL POWER IMBALANCE, %
This Figure is referred to by Technical Specification 3.3.1 ACCEPTABLE OPERATION FOR SPECIFIED RC PUMP COMBINATION Flux-Flux-Flow (or Power/Imbalance/Flow)
Allowable Values, Davis-Besse 1, Cycle 24 Figure 6 UNACCEPTABLE OPERATION UNACCEPTABLE OPERATION 3 PUMP EXAMPLE 4 PUMP LIMIT The 3 pump example curve shows allowable values for an approximately 25% flow reduction for three pump operation (283,860 gpm). The actual setpoint will be calculated by the Reactor Protection System and will be directly proportional to the actual RC flow with three pumps.
These limits are based on EC 19-0137 and are conservative relative to the actual Cycle 24 limits.
108.0
-17.0 14.0 94.4
-30.6 77.1
-30.6 27.6 0.0
-30.6 27.6 Power Level Negative Imbalance Positive Imbalance
Davis-Besse Cycle 24 COLR Page 24 of 25 Revision 0 Table 8 Refueling Boron Concentration Limit for Davis-Besse, Cycle 24 This limit is referred to by Technical Speci"cation 3.9.1 The minimum required boron concentration for Mode 6 shall be suf"cient to ensure a Keff of 0.95 or less, plus an additional 1 %k/k conservatism allowance for uncertainties.
Davis-Besse Cycle 24 COLR Page 25 of 25 Revision 0 Figure 7 Control Rod Core Locations and Group Assignments for Davis-Besse, Cycle 24 This Figure is referred to by the Technical Requirements Manual 8.1.3 Framatome Inc.
ANP-3977 Revision 0 Davis-Besse Nuclear Power Station Unit 1, Cycle 23 Reload Report Licensing Report Page 8-24 Figure 8-11 For Information Only Group No. of Rods Function Group No. of Rods Function 1
4 Safety 5
12 Control 2
8 Safety 6
8 Control 3
4 Safety 7
8 Control 4
9 Safety 8
8 APSRs Total 61