1CAN042101, Cycle 30 Core Operating Limits Report (COLR)
| ML21111A331 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 04/21/2021 |
| From: | Keele R Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 1CAN042101 | |
| Download: ML21111A331 (33) | |
Text
1CAN042101 April 21, 2021 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555
SUBJECT:
ANO-1 Cycle 30 Core Operating Limits Report (COLR)
Arkansas Nuclear One, Unit 1 NRC Docket No. 50-313 Renewed Facility Operating License No. DPR-51
Dear Sir or Madam:
Entergy Operations, Inc. (Entergy) Arkansas Nuclear One, Unit 1 (ANO-1) Technical Specification 5.6.5 requires the submittal of the Core Operating Limits Report (COLR) upon issuance for each reload cycle. Attached is the ANO-1 Cycle 30 COLR. Please note that the latest approved revision number of the Babcock and Wilcox Topical Report BAW-10179P-A is identified in the COLR as Revision 9, November 2017. In addition, the approved revision number of the Entergy Reactor Physics Methods Report is identified in the COLR as Revision 0, December 1993.
This letter contains no new regulatory commitments.
This completes the reporting requirement of the stated specification. Should you have any questions, please contact me.
Sincerely, ORIGINAL SIGNED BY RILEY D. KEELE, JR.
RDK/mar
Enclosure:
ANO-1 Cycle 30 Core Operating Limits Report (COLR)
Entergy Operations, Inc.
1448 S.R. 333 Russellville, AR 72802 Tel 479-858-4826 Riley Keele, Jr.
Manager, Regulatory Assurance Arkansas Nuclear One
1CAN042101 Page 2 of 2 cc:
NRC Region IV Regional Administrator NRC Senior Resident Inspector - Arkansas Nuclear One NRC Project Manager - Arkansas Nuclear One Designated Arkansas State Official
Enclosure to 1CAN042101 ANO-1 Cycle 30 Core Operating Limits Report (COLR)
(30 pages)
CYCLE 30 COLR ANO-1 1
Revision 0 ENTERGY OPERATIONS ARKANSAS NUCLEAR ONE UNIT ONE CYCLE 30 CORE OPERATING LIMITS REPORT
CYCLE 30 COLR ANO-1 2
Revision 0 1.0 CORE OPERATING LIMITS This Core Operating Limits Report for ANO-1 Cycle 30 has been prepared in accordance with the requirements of Technical Specification 5.6.5. The core operating limits have been developed using the methodology provided in the references.
The following cycle-specific core operating limits are included in this report:
- 1) 2.1.1.3 Variable Low RCS Pressure - Temperature Protective Limits
- 2) 3.1.1 SHUTDOWN MARGIN (SDM)
- 3) 3.1.8 PHYSICS TESTS Exceptions - MODE 1
- 4) 3.1.9 PHYSICS TEST Exceptions - MODE 2
- 5) 3.2.1 Regulating Rod Insertion Limits
- 6) 3.2.2 AXIAL POWER SHAPING RODS (APSR) Insertion Limits
- 7) 3.2.3 AXIAL POWER IMBALANCE Operating Limits
- 8) 3.2.4 QUADRANT POWER TILT (QPT)
- 9) 3.2.5 Power Peaking
- 10) 3.3.1 Reactor Protection System (RPS) Instrumentation
- 12) 3.4.4 RCS Loops - MODES 1 and 2
- 13) 3.9.1 Boron Concentration
2.0 REFERENCES
- 1.
"Safety Criteria and Methodology for Acceptable Cycle Reload Analyses," BAW-10179P-A, Rev. 9, Framatome ANP, Inc., Lynchburg, Virginia, November 2017.
2 Qualification of Reactor Physics Methods for the Pressurized Water Reactors of the Entergy System, ENEAD-01-P, Rev. 0, Entergy Operations, Inc., Jackson, Mississippi, December 1993.
- 3.
Transmittal of ANO1-30 Limits and Setpoints Document, Framatome Doc. No.
FS1-0054444-1.0, January 19, 2021.
- 4.
Transmittal of the ANO-1 Cycle 30 Reload Report, Framatome Letter FS1-0054962-1.0, Rev. 0, February 15, 2021, (CALC-ANO1-NE-21-00002, Revision 0).
- 5.
Transmittal of ANO1-30 Final Core Load Plan (CLP), Framatome Letter FS1-0055299-1.0, March 4, 2021, (CALC-ANO1-NE-21-00003, Revision 0).
- 6.
IC (Initial Condition) DNB RCS Protection Criteria, CALC-96-E-0023-02, Rev. 7.
- 7.
Transmittal of the ANO1-30 Reload Technical Document (RTD), Framatome Letter FS1-0054661-1.0, February 1, 2021, (CALC-ANO1-NE-21-00001).
CYCLE 30 COLR ANO-1 3
Revision 0 Table Of Contents Page REACTOR CORE SAFETY LIMITS Fig. 1 Variable Low RCS Pressure-Temperature Protective Limits................................. 5 Fig. 2 AXIAL POWER IMBALANCE Protective Limits..................................................... 6 SHUTDOWN MARGIN (SDM)...................................................................................................... 7 REGULATING ROD INSERTION LIMITS Fig. 3-A Regulating Rod Insertion Limits for Four-Pump Operation From 0 to 200 +/- 10 EFPD...................................................................................... 8 Fig. 3-B Regulating Rod Insertion Limits for Four-Pump Operation From 200 +/- 10 EFPD to EOC............................................................................... 9 Fig. 4-A Regulating Rod Insertion Limits for Three-Pump Operation From 0 to 200 +/- 10 EFPD................................................................................... 10 Fig. 4-B Regulating Rod Insertion Limits for Three-Pump Operation From 200 +/- 10 EFPD to EOC............................................................................. 11 Fig. 5-A Regulating Rod Insertion Limits for Two-Pump Operation From 0 to 200 +/- 10 EFPD................................................................................... 12 Fig. 5-B Regulating Rod Insertion Limits for Two-Pump Operation From 200 +/- 10 EFPD to EOC............................................................................. 13 AXIAL POWER SHAPING RODS (APSR) INSERTION LIMITS............................................... 14 AXIAL POWER IMBALANCE OPERATING LIMITS Fig. 6-A AXIAL POWER IMBALANCE Setpoints for Full In-Core Conditions for Four-Pump Operation from 0 EFPD to EOC....................................................... 15 Fig. 6-B AXIAL POWER IMBALANCE Setpoints for Minimum In-Core Conditions for Four-Pump Operation from 0 EFPD to EOC.................................................. 16 Fig. 6-C AXIAL POWER IMBALANCE Setpoints for Ex-Core Conditions for Four-Pump Operation from 0 EFPD to EOC....................................................... 17 Fig. 7-A AXIAL POWER IMBALANCE Setpoints for Full In-Core Conditions for Three-Pump Operation from 0 EFPD to EOC..................................................... 18 Fig. 7-B AXIAL POWER IMBALANCE Setpoints for Minimum In-Core Conditions for Three-Pump Operation from 0 EFPD to EOC................................................ 19 Fig. 7-C AXIAL POWER IMBALANCE Setpoints for Ex-Core Conditions for Three-Pump Operation from 0 EFPD to EOC..................................................... 20 Fig. 8-A AXIAL POWER IMBALANCE Setpoints for Full In-Core Conditions for Two-Pump Operation from 0 EFPD to EOC........................................................ 21 Fig. 8-B AXIAL POWER IMBALANCE Setpoints for Minimum In-Core Conditions for Two-Pump Operation from 0 EFPD to EOC................................................... 22 Fig. 8-C AXIAL POWER IMBALANCE Setpoints for Ex-Core Conditions for Two-Pump Operation from 0 EFPD to EOC........................................................ 23
CYCLE 30 COLR ANO-1 4
Revision 0 QUADRANT POWER TILT LIMITS AND SETPOINTS............................................................. 24 POWER PEAKING FACTORS Fig. 9A LOCA Linear Heat Rate Limits for Mark-B-HTP Fuel.......................................... 25 DNB Power Peaking Factors............................................................................................... 26 REACTOR PROTECTION SYSTEM (RPS) INSTRUMENTATION Fig. 10 RPS Maximum Allowable Setpoints for Axial Power Imbalance......................... 27 Fig. 11 RPS Variable Low Pressure Temperature Envelope Setpoints.......................... 28 RCS PRESSURE, TEMPERATURE, AND FLOW DNB SURVEILLANCE LIMITS.................. 29 RCS LOOPS MODE 1 AND 2.................................................................................................... 30 REFUELING BORON CONCENTRATION................................................................................ 30
CYCLE 30 COLR ANO-1 5
Revision 0 FIGURE 1 Variable Low RCS Pressure - Temperature Protective Limits (Figure is referred to by Technical Specification 2.1.1.3)
PUMPS OPERATING (TYPE OF LIMIT)
GPM*
POWER**
FOUR PUMPS (DNBR LIMIT) 383,680 (100%)
110%
THREE PUMPS (DNBR LIMIT) 284,307 (74.1%)
89%
ONE PUMP IN EACH LOOP (DNBR LIMIT) 188,003 (49%)
62.2%
109% OF DESIGN FLOW (2.5% UNCERTAINTY INCLUDED IN STATISTICAL DESIGN LIMIT)
- AN ADDITIONAL 2% POWER UNCERTAINTY IS INCLUDED IN STATISTICAL DESIGN LIMIT 4-PUMP 3-PUMP 590 600 610 620 630 640 650 2300 2200 2100 2000 1900 1800 1700 Reactor Coolant Outlet Temperature, °F Core Outlet Pressure, psig 1 PUMP EACH LOOP
CYCLE 30 COLR ANO-1 6
Revision 0 Figure 2 AXIAL POWER IMBALANCE Protective Limits (measurement system independent)
(Figure is referred to by Technical Specification 2.1.1 Bases) 120.0 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 44.50, 112)
(44.50, 87.6)
(44.50, 61)
(-55.00, 101.4)
(-55.00, 77)
(-55.00, 50.4)
(-55.00, 0.0)
(-47.30, 112)
(-47.30, 87.6)
(-47.30, 61)
ACCEPTABLE 4 PUMP OPERATION ACCEPTABLE 3 AND 4 PUMP OPERATION ACCEPTABLE 2, 3 AND 4 PUMP OPERATION Thermal Power Level %
Axial Power Imbalance, %
The three-or two-pump example setpoint curves show allowable values for an approximate 26%
and 51% flow reduction for three-and two-pump operation respectively.
The actual setpoint curve will be calculated by the Reactor Protection System and will be directly proportional to the indicated flow.
(56.30, 101.4)
(56.30, 77)
(56.30, 50.4)
(56.30, 0.0)
-70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70
CYCLE 30 COLR ANO-1 7
Revision 0 SHUTDOWN MARGIN (SDM)
(Limits are referred to by Technical Specifications 3.1.1, 3.1.4, 3.1.5, 3.1.8, 3.1.9, and 3.3.9)
Verify SHUTDOWN MARGIN per the table below.
APPLICABILITY REQUIRED SHUTDOWN MARGIN TECHNICAL SPECIFICATION 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 specified in Figures 3-A&B, 4-A&B, and 5-A&B, as required by Technical Specification 3.2.1.
- Entry into Mode 1 Physics Tests Exceptions is not supported by existing analyses and as such requires actual shutdown margin to be 1 %k/k.
CYCLE 30 COLR ANO-1 8
Revision 0 Figure 3-A Regulating Rod Insertion Limits for Four-Pump Operation From 0 to 200 +/- 10 EFPD (Figure is referred to by Technical Specification 3.2.1)
- Operating rod group overlap is 20% +/- 5% between two sequential groups, except for physics tests.
0 50 100 150 200 250 300 Rod Index, % Withdrawn Power, % of 2568 MWt 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 (0.0, 12.5)
(21.5, 20)
(50.5, 58)
(88.2, 102)
(270.1, 102)
(300.0, 102)
(248.5, 90)
(248.5, 78)
(206.5, 58)
OPERATION IN THIS REGION IS NOT ALLOWED SHUTDOWN MARGIN LIMIT OPERATION RESTRICTED PERMISSIBLE OPERATING REGION 0 20 40 60 80 100 GROUP 6*
0 20 40 60 80 100 GROUP 5*
0 20 40 60 80 100 GROUP 7*
CYCLE 30 COLR ANO-1 9
Revision 0 Figure 3-B Regulating Rod Insertion Limits for Four-Pump Operation From 200 +/- 10 EFPD to EOC (Figure is referred to by Technical Specification 3.2.1)
- Operating rod group overlap is 20% +/- 5% between two sequential groups, except for physics tests.
GROUP 6*
GROUP 5*
0 50 100 150 200 250 300 Rod Index, % Withdrawn Power, % of 2568 MWt 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 (0.0, 5)
(81.5, 20)
(108.5, 58)
(186.0, 102)
(270.1, 102)
(300.0, 102)
(248.5, 90)
(248.5, 78)
(206.5, 58)
OPERATION IN THIS REGION IS NOT ALLOWED SHUTDOWN MARGIN LIMIT OPERATION RESTRICTED PERMISSIBLE OPERATING REGION 0 20 40 60 80 100 0 20 40 60 80 100 0 20 40 60 80 100 GROUP 7*
CYCLE 30 COLR ANO-1 10 Revision 0 Figure 4-A Regulating Rod Insertion Limits for Three-Pump Operation From 0 to 200 +/- 10 EFPD (Figure is referred to by Technical Specification 3.2.1)
- Operating rod group overlap is 20% +/- 5% between two sequential groups, except for physics tests.
GROUP 6*
110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 Power, % of 2568 MWt (271.0, 77)
(88.8, 77)
(300.0, 77)
(248.5, 67)
OPERATION IN THIS REGION IS NOT ALLOWED (248.5, 58)
OPERATION RESTRICTED SHUTDOWN MARGIN LIMIT (50.5, 43.5)
(206.5, 43)
PERMISSIBLE OPERATING REGION (21.5, 15)
(0.0, 9.4) 0 50 100 150 200 250 300 Rod Index, % Withdrawn 0 20 40 60 80 100 0 20 40 60 80 100 GROUP 7*
0 20 40 60 80 100 GROUP 5*
CYCLE 30 COLR ANO-1 11 Revision 0 Figure 4-B Regulating Rod Insertion Limits for Three-Pump Operation From 200 +/- 10 EFPD to EOC (Figure is referred to by Technical Specification 3.2.1)
- Operating rod group overlap is 20% +/- 5% between two sequential groups, except for physics tests.
GROUP 6*
110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 Power, % of 2568 MWt (187.2, 77)
(271.0, 77)
(300.0, 77)
(248.5, 67)
OPERATION IN THIS REGION IS NOT ALLOWED (248.5, 58)
OPERATION RESTRICTED SHUTDOWN MARGIN LIMIT (108.5, 43.5)
(206.5, 43)
PERMISSIBLE OPERATING REGION (0.0, 3.8) 0 50 100 150 200 250 300 Rod Index, % Withdrawn 0 20 40 60 80 100 0 20 40 60 80 100 GROUP 7*
0 20 40 60 80 100 GROUP 5*
(81.5, 15)
CYCLE 30 COLR ANO-1 12 Revision 0 Figure 5-A Regulating Rod Insertion Limits for Two-Pump Operation From 0 to 200 +/- 10 EFPD (Figure is referred to by Technical Specification 3.2.1)
- Operating rod group overlap is 20% +/- 5% between two sequential groups, except for physics tests.
0 50 100 150 200 250 300 GROUP 7*
110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 Power, % of 2568 MWt (89.9, 52)
(272.5, 52)
(300.0, 52)
(248.5, 44)
(248.5, 38)
OPERATION IN THIS REGION IS NOT ALLOWED SHUTDOWN MARGIN LIMIT OPERATION RESTRICTED (50.5, 29)
(206.5, 28)
PERMISSIBLE OPERATING REGION (0.0, 6.2) (21.5, 10)
Rod Index, % Withdrawn 0 20 40 60 80 100 GROUP 6*
0 20 40 60 80 100 0 20 40 60 80 100 GROUP 5*
CYCLE 30 COLR ANO-1 13 Revision 0 Figure 5-B Regulating Rod Insertion Limits for Two-Pump Operation From 200 +/- 10 EFPD to EOC (Figure is referred to by Technical Specification 3.2.1)
- Operating rod group overlap is 20% +/- 5% between two sequential groups, except for physics tests.
110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 Power, % of 2568 MWt (189.5, 52)
(272.5, 52)
(300.0, 52)
(248.5, 44)
OPERATION IN THIS REGION IS NOT ALLOWED SHUTDOWN MARGIN LIMIT OPERATION RESTRICTED (248.5, 38)
(108.5, 29)
(206.5, 28)
PERMISSIBLE OPERATING REGION (0.0, 2.6)
(81.5, 10) 0 50 100 150 200 250 300 Rod Index, % Withdrawn 0 20 40 60 80 100 GROUP 6*
0 20 40 60 80 100 GROUP 7*
0 20 40 60 80 100 GROUP 5*
CYCLE 30 COLR ANO-1 14 Revision 0 AXIAL POWER SHAPING RODS (APSR) INSERTION LIMITS (Limits referred to by Technical Specification 3.2.2)
Up to 455 +/- 10 EFPD, the APSRs may be positioned as necessary for transient imbalance control.
However, the APSRs shall be fully withdrawn by 465 EFPD. After the APSR withdrawal at 455 +/-
10 EFPD, the APSRs shall not be reinserted, except during the end of cycle shutdown when the reactor power is equal to, or less than, 30% FP.
CYCLE 30 COLR ANO-1 15 Revision 0 Figure 6-A AXIAL POWER IMBALANCE Setpoints for Full In-Core Conditions for Four-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Power, % of 2568 MWt Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-37.55, 60)
(-37.33, 80)
(37.55, 60)
(-34.00, 92)
(-27.59, 102)
(37.33, 80)
(29.83, 92)
(18.28, 102)
(--37.55, 0)
(37.55, 0) 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0
CYCLE 30 COLR ANO-1 16 Revision 0 Figure 6-B AXIAL POWER IMBALANCE Setpoints for Minimum In-Core Conditions* for Four-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
- Assumes that no individual long emitter detector affecting the minimum in core imbalance calculation exceeds 73% sensitivity depletion. The imbalance setpoints for the minimum incore system must be reduced to 2.8% FP at the earliest time-in-life this assumption is no longer valid.
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Power, % of 2568 MWt Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-28.30, 60)
(-27.60, 80)
(28.30, 60)
(-24.25, 92)
(-18.44, 102)
(27.45, 80)
(20.44, 92)
(10.18, 102)
(-28.30, 0)
(28.30, 0) 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0
CYCLE 30 COLR ANO-1 17 Revision 0 Figure 6-C AXIAL POWER IMBALANCE Setpoints for Ex-Core Conditions for Four-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Power, % of 2568 MWt Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-31.60, 60)
(-30.92, 80)
(31.50, 60)
(-27.45, 92)
(-21.09, 102)
(30.80, 80)
(23.35, 92)
(12.07, 102)
(-31.60, 0)
(31.50, 0) 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 110.0 100.0
CYCLE 30 COLR ANO-1 18 Revision 0 Figure 7-A AXIAL POWER IMBALANCE Setpoints for Full In-Core Conditions for Three-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Power, % of 2568 MWt Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-37.72, 45)
(-37.55, 60)
(37.72, 45)
(-34.25, 69)
(-27.86, 77)
(37.55, 60)
(30.08, 69)
(18.55, 77) 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 (37.72, 0)
(-37.72, 0)
CYCLE 30 COLR ANO-1 19 Revision 0 Figure 7-B AXIAL POWER IMBALANCE Setpoints for Minimum In-Core Conditions* for Three-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
- Assumes that no individual long emitter detector affecting the minimum incore imbalance calculation exceeds 73% sensitivity depletion. The imbalance setpoints for the minimum incore system must be reduced to 2.8% FP at the earliest time-in-life this assumption is no longer valid.
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Power, % of 2568 MWt Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-28.82, 45)
(-28.30, 60)
(28.82, 45)
(-25.06, 69)
(-19.32, 77)
(28.15, 60)
(21.25, 69)
(11.05, 77) 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 (28.82, 0)
(-28.82, 0)
CYCLE 30 COLR ANO-1 20 Revision 0 Figure 7-C AXIAL POWER IMBALANCE Setpoints for Ex-Core Conditions for Three-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Power, % of 2568 MWt Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-32.09, 45)
(-31.60, 60)
(32.01, 45)
(-28.24, 69)
(-21.95, 77)
(31.50, 60)
(24.15, 69)
(12.93, 77) 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0
(-32.09, 0)
(32.01, 0)
CYCLE 30 COLR ANO-1 21 Revision 0 Figure 8-A AXIAL POWER IMBALANCE Setpoints for Full In-Core Conditions for Two-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Power, % of 2568 MWt Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-37.88, 30)
(-37.77, 40)
(37.88, 30)
(-34.51, 46)
(-28.14, 52)
(37.77, 40)
(30.34, 46)
(18.83, 52) 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0
(-37.88, 0)
(37.88, 0)
CYCLE 30 COLR ANO-1 22 Revision 0 Figure 8-B AXIAL POWER IMBALANCE Setpoints for Minimum In-Core Conditions* for Two-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
- Assumes that no individual long emitter detector affecting the minimum incore imbalance calculation exceeds 73% sensitivity depletion. The imbalance setpoints for the minimum incore system must be reduced to 2.8% FP at the earliest time-in-life this assumption is no longer valid.
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-29.35, 30)
(-29.00, 40)
(29.35, 30)
(-25.86, 46)
(-20.19, 52)
(28.65, 40)
(21.98, 46)
(11.86, 52) 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 Power, % of 2568 MWt
(-29.35, 0)
(29.35, 0)
CYCLE 30 COLR ANO-1 23 Revision 0 Figure 8-C AXIAL POWER IMBALANCE Setpoints for Ex-Core Conditions for Two-Pump Operation from 0 EFPD to EOC (Figure is referred to by Technical Specification 3.2.3)
-50.00
-40.00
-30.00
-20.00
-10.00 0.00 10.00 20.00 30.00 40.00 50.00 PERMISSIBLE OPERATING REGION RESTRICTED REGION Axial Power Imbalance, %FP RESTRICTED REGION PERMISSIBLE OPERATING REGION
(-32.57, 30)
(-32.25, 40)
(32.51, 30)
(-29.00, 46)
(-22.78, 52)
(32.18, 40)
(24.93, 46)
(13.76, 52) 110.0 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 Power, % of 2568 MWt
(-32.57, 0)
(32.51, 0)
CYCLE 30 COLR ANO-1 24 Revision 0 Quadrant Power Tilt Limits And Setpoints (Limits are referred to by Technical Specification 3.2.4)
From 0 EFPD to EOC Measurement System Steady State Value (%)
Maximum Value (%)
60 % FP
> 60 % FP Full In-core Detector System Setpoint 6.83 4.47 25.00 Minimum In-core Detector System Setpoint 2.78*
1.90*
25.00 Ex-core Power Range NI Channel Setpoint 4.05 1.96 25.00 Measurement System Independent Limit 7.50 4.92 25.00
- Assumes that no individual long emitter detector affecting the minimum in-core tilt calculation exceeds 73% sensitivity depletion. The setpoint must be reduced to 1.50% (power levels
> 60% FP) and to 2.19% (power levels 60% FP) at the earliest time-in-life that this assumption is no longer valid.
CYCLE 30 COLR ANO-1 25 Revision 0 Figure 9A LOCA Linear Heat Rate Limits for Mark-B-HTP Fuel (Figure is referred to by Technical Specification 3.1.8 and 3.2.5)
Allowable LOCA LHR Limits Core Elevation, ft LHR Limit for 0 MWd/mtU, kW/ft LHR Limit for 28,000 MWd/mtU, kW/ft LHR Limit for 62,000 MWd/mtU, kW/ft 0.000 16.60 16.60 12.30 2.506 17.50 17.50 13.00 4.264 17.50 17.50 13.00 6.021 17.30 17.30 13.00 7.779 17.50 17.50 13.00 9.536 17.30 17.30 13.00 11.000 15.30 15.30 12.50 12.000 14.50 14.50 12.30 Allowable LOCA LHR Limits - Chrome-Coated Fuel Rods Only Core Elevation, ft LHR Limit for 0 MWd/mtU, kW/ft LHR Limit for 28,000 MWd/mtU, kW/ft LHR Limit for 62,000 MWd/mtU, kW/ft 0.000 15.70 15.70 11.60 2.506 16.60 16.60 12.30 4.264 16.60 16.60 12.30 6.021 16.40 16.40 12.30 7.779 16.60 16.60 12.30 9.536 15.10 15.10 12.30 11.000 12.50 12.50 11.50 12.000 11.80 11.80 10.90 Note: The LOCA LHR limits may be linearly interpolated as a function of burnup between 0 MWd/mtU and 28,000 MWd/mtU, between 28,000 MWd/mtU and 62,000 MWd/mtU, and as a function of core elevation.
CYCLE 30 COLR ANO-1 26 Revision 0 DNB Power Peaking Factors (Limits are referred to by Technical Specification 3.1.8 and 3.2.5)
The following total power peaking factors define the Maximum Allowable Peaking (MAP) limits to protect the initial conditions assumed in the DNB Loss of Flow transient analysis. The total power peaking factors for IC-DNB 4-pump and 3-pump are identical; hence one set of IC-DNB values are provided for both 4-pump and 3-pump operation.
IC-DNB Total Power Peaking Factors Mark-B-HTP Axial Peak x/L IC MAP Limits Axial Peak x/L IC MAP Limits Axial Peak x/L IC MAP Limits 1.1 0.01 2.04426 1.4 0.01 2.94000 1.7 0.01 3.20469 0.14 2.04515 0.14 2.94000 0.14 3.20469 0.20 2.04535 0.20 2.93545 0.20 3.15423 0.30 2.04551 0.30 2.84715 0.30 3.08083 0.40 2.04470 0.40 2.76077 0.40 2.98064 0.50 2.04437 0.50 2.66671 0.50 2.89369 0.60 2.04415 0.60 2.55808 0.60 2.78037 0.70 2.04400 0.70 2.46508 0.70 2.68552 0.80 2.04329 0.80 2.34973 0.80 2.56207 0.89 2.00109 0.89 2.27714 0.89 2.49021 0.99 1.90427 0.99 2.18525 0.99 2.39515 1.2 0.01 2.33088 1.5 0.01 3.08066 1.8 0.01 3.24949 0.14 2.33287 0.14 3.08066 0.14 3.24949 0.20 2.33339 0.20 3.03513 0.20 3.20303 0.30 2.33352 0.30 2.93856 0.30 3.13047 0.40 2.33338 0.40 2.84115 0.40 3.04037 0.50 2.33285 0.50 2.75216 0.50 2.95027 0.60 2.33232 0.60 2.63946 0.60 2.84225 0.70 2.26721 0.70 2.54429 0.70 2.74696 0.80 2.16931 0.80 2.42655 0.80 2.62489 0.89 2.10460 0.89 2.35382 0.89 2.55373 0.99 2.00767 0.99 2.26040 0.99 2.45882 1.3 0.01 2.64464 1.6 0.01 3.14861 1.9 0.01 3.28611 0.14 2.64863 0.14 3.14861 0.14 3.28611 0.20 2.64909 0.20 3.09918 0.20 3.24461 0.30 2.64997 0.30 3.01573 0.30 3.17163 0.40 2.64949 0.40 2.91490 0.40 3.08589 0.50 2.56272 0.50 2.82718 0.50 3.00025 0.60 2.46600 0.60 2.71210 0.60 2.89826 0.70 2.37484 0.70 2.61653 0.70 2.80288 0.80 2.26452 0.80 2.49634 0.80 2.68386 0.89 2.19471 0.89 2.42370 0.89 2.61261 0.99 2.09988 0.99 2.32955 0.99 2.51792 Notes
- 1. The values above are not error corrected.
- 2. The values above were generated using SCD methods which incorporate a 3.8% radial peak uncertainty in the DNBR design limit.
Therefore, the above IC MAP limits can be compared to predicted peaks without the addition of up to 3.8% in radial peak calculation uncertainty. These limits, however, do not incorporate any grid bias uncertainty.
- 3. The present T-H methodology allows for an increase in the design radial-local peak for power levels below 100% full power. The equations defining the multipliers are as follows:
P/Pm = 1.00 P/Pm < 1.00 MAP Multiplier 1.0 1 + 0.3(1 - P/Pm)
Where P
=
core power fraction, and Pm =
1.00 for 4-pump operation, or
=
0.75 for 3-pump operation
CYCLE 30 COLR ANO-1 27 Revision 0
(-44.0, 0.0)
(-44.0, 92.5)
(-34.0, 107.0)
(45.0, 92.5)
(45.0, 0.0)
(-44.0, 64.8)
(-34.0, 79.3)
(30.0, 79.3)
(45.0, 64.8)
(-44.0, 37.9)
(-34.0, 52.4)
(30.0, 52.4)
(45.0, 37.9)
(30.0, 107.0) 0 20 40 60 80 100 120
-60
-50
-40
-30
-20
-10 0
10 20 30 40 50 60 Axial Power Imbalance, %
Thermal Power Level %
ACCEPTABLE 4 PUMP OPERATION ACCEPTABLE 3 AND 4 PUMP OPERATION ACCEPTABLE 2, 3 AND 4 PUMP OPERATION The three-or two-pump example setpoint curves show allowable values for an approximate 26%
and 51% flow reduction for three-and two-pump operation respectively. The actual setpoint curve will be calculated by the Reactor Protection System and will be directly proportional to the indicated flow.
Figure 10 Reactor Protection System Maximum Allowable Setpoints for Axial Power Imbalance (Figure is referred to by Technical Specification 3.3.1 and Technical Specification Bases 2.1.1)
Flux / Flow Setpoint
(% Power / % Flow)
Four Pump Operation 1.07 Three Pump Operation 1.07 Two Pump Operation 1.07
CYCLE 30 COLR ANO-1 28 Revision 0 Figure 11 Reactor Protection System Variable Low Pressure Temperature Envelope Setpoints (Figure is referred to by Technical Specification 3.3.1) 560, 2355 618, 2355 618, 1980 606.9, 1800 560, 1800 1600 1800 2000 2200 2400 560 580 600 620 640 660 Reactor Outlet Temperature, F ACCEPTABLE OPERATION UNACCEPTABLE OPERATION P = 16.25 T out-8063, psig Reactor Coolant Pressure, psig
CYCLE 30 COLR ANO-1 29 Revision 0 RCS Pressure, Temperature, and Flow DNB Surveillance Limits (Limit is referred to by Technical Specification 3.4.1)
Four-Pump Operation Three-Pump Operation Two-Pump Operation Minimum RCS Hot Leg Pressure (psig) Note 1 2082.2 2081.2Note 4 2120.4Note 5 2118.1 Maximum RCS Hot Leg Temperature (°F) Note 2 602.6 602.9 603.15 Minimum RCS Total Flow (Mlbm/hr) Note 3 143.36 Note 6 138.01 Note 9 106.46 Note 7 102.45 Note 9 70.64 Note 8 67.96 Note 9 Note 1 -- Using individual indications P1021, P1023, P1038 and P1039 (or equivalent) from the plant computer.
Note 2 -- Using individual indications T1011NR, T1014NR, T1039NR, T1042NR, T1012, T1013, T1040 and T1041 or averages TOUTA, XTOUTA, TOUTB, XTOUTB, TOUT, XTOUT from the plant computer.
Note 3 -- Using indication WRCFT (or equivalent) from the plant computer, and can be linearly interpolated between these values provided the Tave versus Power level curve is followed.
Note 4 -- Applies to the RCS loop with two RCPs operating.
Note 5 -- Applies to the RCS loop with one RCP operating.
Note 6 -- For Tcold = 556.57 °F.
Note 7 -- For Tcold = 556.3 °F.
Note 8 -- For Tcold = 556.1 °F.
Note 9 -- For Tcold = 580 °F.
CYCLE 30 COLR ANO-1 30 Revision 0 RCS Loops - Mode 1 and Mode 2 (Limit is referred to by Technical Specification 3.4.4)
Nominal Operating Power Level
(% Power)
Four Pump Operation 100 Three Pump Operation 75 Two Pump Operation*
49
- Technical Specification 3.4.4 does not allow indefinite operation in Modes 1 and 2 with only two pumps operating.
Refueling Boron Concentration (Limit is referred to by Technical Specification 3.9.1)
The minimum required boron concentration (which includes uncertainties) for use during refueling as a function of the End of Cycle 29 (EOC-29) EFPD is:
EOC-29 EFPD Refueling Boron (ppm)1 465 2223 468 2217 471 2211 474 2205 477 2199 480 2193 483 2187 486 2181 489 2175 492 2169
>495 2163 1 The Refueling Boron may be linearly interpolated as a function of EOC-29 EFPD between 465 and 495 EFPD.