ML24286A002

Core Operating Limits Report Cycle 45, Revision 0

ML24286A002
Person / Time
Site:	Ginna
Issue date:	10/11/2024
From:	Blankenship J Constellation Energy Generation
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
Download: ML24286A002 (1)

Text

Constellation October 11, 2024 U.S. Nuclear Regulatory Commission ATTN : Document Control Desk Washington, DC 20555-0001 R.E. Ginna Nuclear Power Plant Renewed Facility Operating License No. DPR-18 NRC Docket No. 50-244 James D. Blankenship Site Vice President R.E. Ginna Clean Energy Center 1503 Lake Rd.

Ontario. NY 14519 315-791-5200 Office 1ames. blan kensh1p1a constellation. com www.constellat1on.com

Subject:

R.E. Ginna Nuclear Power Plant Core Operating Limits Report Cycle 45, Revision 0 Enclosed is a copy of the R.E. Ginna Nuclear Power Plant Core Operating Limits Report (COLR)

Cycle 45, Revision 0. It changed Figure COLR-3 (visual preference only for depicting the data above the top of the active fuel, actual control bank insertion limits are unchanged) and Tables COLR-1, COLR-2, and COLR-3 with reload design-specific values.

This cycle revision of the COLR is being submitted to the NRC in accordance with the R. E. Ginna Nuclear Power Plant Technical Specifications, Section 5.6.5.d.

There are no regulatory commitments contained in this letter.

Should you have any questions regarding this submittal, please contact Justin Knowles at 315-791-3393.

Respectfully,

Attachment:

R.E. Ginna Nuclear Power Plant Core Operating Limits Report Cycle 45, Revision 0 cc:

NRC Regional Administrator, Region I NRC Project Manager, Ginna NRC Senior Resident Inspector, Ginna

R.E. Ginna Nuclear Power Plant, LLC October 11, 2024 ATTACHMENT R.E. Ginna Nuclear Power Plant Core Operating Limits Report, Cycle 45 Revision 0

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-1 Revision 0 R. E. Ginna Nuclear Power Plant Core Operating Limits Report COLR Cycle 45 Revision 0 Responsible Manager:

Effective Date:

09/30/24

Connor, Kenneth J Digitally signed by Connor, Kenneth J Date: 2024.09.30 19:41:37 -04'00'

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-2 Revision 0 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for the R. E. Ginna Nuclear Power Plant has been prepared in accordance with the requirements of Technical Specification 5.6.5.

The Technical Specifications affected by this report are listed below:

2.1 Safety Limits (SLs) 3.1.1 SHUTDOWN MARGIN (SDM) 3.1.3 Moderator Temperature Coefficient (MTC) 3.1.4 Rod Group Alignment Limits 3.1.5 Shutdown Bank Insertion Limit 3.1.6 Control Bank Insertion Limits 3.1.8 PHYSICS TESTS Exceptions MODE 2 3.2.1 Heat Flux Hot Channel Factor (FQ(Z))

3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FNH) 3.2.3 AXIAL FLUX DIFFERENCE (AFD) 3.3.1 Reactor Trip System (RTS) Instrumentation 3.4.1 RCS Pressure, Temperature, and Flow Departure from Nucleate Boiling (DNB)

Limits 3.4.5 RCS Loops MODES 1 8.5% RTP, 2, and 3 3.9.1 Boron Concentration

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-3 Revision 0 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 the NRC-approved methodologies specified in Technical Specification 5.6.5. All items that appear in capitalized type are defined in Technical Specification 1.1, Definitions.

2.1 SAFETY LIMITS (SLs)1 (2.1) 2.1.1 In MODES 1 and 2, the combination of THERMAL POWER, Reactor Coolant System (RCS) average temperature, and pressurizer pressure shall not exceed the SLs specified in Figure COLR-1.

2.2 SHUTDOWN MARGIN (SDM)1 (LCO 3.1.1, LCO 3.1.4, LCO 3.1.5, LCO 3.1.6, LCO 3.1.8, and LCO 3.4.5) 2.2.1 The SHUTDOWN MARGIN in MODE 2 with Keff < 1.0 and MODES 3 and 4 shall be greater than or equal to the limits specified in Figure COLR-2 for the number of reactor coolant pumps in operation.

2.2.2 The SHUTDOWN MARGIN in MODE 4 when both reactor coolant pumps are not in operation and in MODE 5 shall be greater than or equal to the one loop operation curve of Figure COLR-2.

2.2.3 The SHUTDOWN MARGIN required in LCO 3.1.4, LCO 3.1.5, LCO 3.1.6, LCO 3.1.8, and LCO 3.4.5 shall be greater than the limits specified in Figure COLR-2 for the number of reactor coolant pumps in operation.

2.3 Moderator Temperature Coefficient (MTC)1 (LCO 3.1.3) 2.3.1 The Moderator Temperature Coefficient (MTC) limits are:

The BOL ARO/HZP - MTC shall be equal to or less positive than +5.0 pcm/°F for power levels below 70% RTP and less than or equal to 0 pcm/°F for power levels at or above 70% RTP.

The EOL ARO/RTP - MTC shall be less negative than -44.6 pcm/°F.

where:

ARO stands for All Rods Out

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-4 Revision 0 BOL stands for Beginning of Cycle Life EOL stands for End of Cycle Life HZP stands for Hot Zero Power RTP stands for RATED THERMAL POWER 2.4 Shutdown Bank Insertion Limit1 (LCO 3.1.5) 2.4.1 The shutdown bank shall be fully withdrawn which is defined as 220 steps.

2.5 Control Bank Insertion Limits1 (LCO 3.1.6) 2.5.1 The control banks shall be limited in physical insertion as shown in Figure COLR-

3. Control Bank A shall be at least 220 steps withdrawn.

2.5.2 The control rod banks shall be withdrawn maintaining a nominal 130 step tip-to-tip distance while moving in overlap through the active core region.

2.6 Heat Flux Hot Channel Factor (FQ(Z))2 (LCO 3.2.1) 2.6.1 FQ(Z) CFQ

• K(Z) I P for P > 0.5 FQ(Z) CFQ

• K(Z) I 0.5 for P 0.5 where:

CFQ is the FQ(Z) limit P = THERMAL POWER I RATED THERMAL POWER Z is the height of the core 2.6.2 CFQ = 2.60 2.6.3 K(Z) is provided in Figure COLR-4 2.6.4 W(Z) values are provided in Table COLR-1. For W(Z) data at a desired burnup not listed in the table, but less than the maximum listed burnup, values at 3 or more burnup steps should be used to interpolate the W(Z) data to the desired burnup with a polynomial type fit that uses the W(Z) data for the nearest three burnup steps.

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-5 Revision 0 For W(Z) data at a desired burnup outside of the listed burnup steps, a linear extrapolation of the W(Z) data for the nearest two burnup steps can be used.

If data are listed for only two burnup steps, a linear fit can be used for both interpolation and extrapolation.

2.6.5 The FQ(Z) penalty factors are provided in Table COLR-2.

2.6.6 Table COLR-3 provides W(Z) values for the BOC startup flux map to be taken prior to exceeding 50% then 75% power. For part power surveillances during other times in life or at powers other than those listed in Table COLR-3, the W(Z) values in Table COLR-1 should be used. The W(Z) values in Table COLR-3 do not include the 1/P factor, where P is the surveillance power level.

This factor will be applied by the BEACONTM Core Monitoring System.

2.6.7 Table COLR-4 contains the required operating space reduction values for THERMAL POWER and AXIAL FLUX DIFFERENCE (AFD) when FQW(Z) is not within its limits. These values are used in conjunction with Technical Specification LCO 3.2.1 Required Actions B.1 and B.2.

2.7 Nuclear Enthalpy Rise Hot Channel Factor (FNH)1 (LCO 3.2.2) 2.7.1 FNH FRTPH * (1 + PFH * (1-P))

where:

FRTPH = 1.72 PFH = 0.3, and P

= THERMAL POWER / RATED THERMAL POWER 2.8 AXIAL FLUX DIFFERENCE (AFD)3 (LCO 3.2.3) 2.8.1 The AFD acceptable operation limits are provided in Figure COLR-5. These limits may be modified in accordance with Table COLR-4 if Technical Specification LCO 3.2.1 Required Actions B.1 and B.2 must be taken.

BEACON is a trademark or registered trademark of Westinghouse Electric Company LLC, its Affiliates and/or its Subsidiaries in the United States of America and may be registered in other countries throughout the world. All rights reserved. Unauthorized use is strictly prohibited. Other names may be trademarks of their respective owners.

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-6 Revision 0 2.9 Reactor Trip System (RTS) lnstrumentation5 (LCO 3.3.1) 2.9.1 Overtemperature T Setpoint Parameter Values Parameter Value Overtemperature T reactor trip setpoint K1 1.19 Overtemperature T reactor trip K2 0.00093/psi depressurization setpoint penalty coefficient Overtemperature T reactor trip heatup K3 0.0185/°F penalty setpoint coefficient Measured lead time constant 1

25 seconds Measured lag time constant 2

5 seconds f1(I) is a function of the indicated difference between top and bottom detectors of the power range nuclear ion chambers. Selected gains are based on measured instrument response during plant startup tests, where qt and qb are percent RATED THERMAL POWER in the upper and lower halves of the core, respectively, and qt + qb is the total percent RATED THERMAL POWER, such that:

x For qt - qb between -14% and +6%, f1(I) = 0.

x For each percent that the magnitude of qt - qb exceeds -14%, the T trip setpoint shall be automatically reduced by an equivalent of 3.08% of RATED THERMAL POWER.

x For each percent that the magnitude of qt - qb exceeds +6%, the T trip setpoint shall be automatically reduced by an equivalent of 2.27% of RATED THERMAL POWER.

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-7 Revision 0 2.9.2 Overpower T Setpoint Parameter Values Parameter Value Overpower T reactor trip setpoint K4 1.077 Overpower T reactor trip heatup setpoint K5 =

0/°F for T < T' penalty coefficient 0.0014/°F for T T' Overpower T reactor trip thermal K6 0.00/°F for increasing T time delay setpoint penalty

=

0.00/°F for decreasing T Measured impulse/lag time constant 3 =

0 seconds f2(I) = 0.0% RTP for all I 2.10 RCS Pressure, Temperature, and Flow Departure from Nucleate Boiling (DNB) Limits4 (LCO 3.4.1) 2.10.1 The pressurizer pressure shall be 2175 psig.

2.10.2 The RCS average temperature shall be 580.0°F.

2.10.3 The RCS total flow rate shall be 177,300 gpm (includes 4% minimum flow uncertainty per Revised Thermal Design Methodology).

2.11 Boron Concentration1 (LCO 3.9.1) 2.11.1 The boron concentrations of the hydraulically coupled Reactor Coolant System, the refueling canal, and the refueling cavity shall be 2750 ppm.

Boron concentration based on All Rods In less the highest worth rod with a K-effective of 0.95. A 170 ppm Factor of Safety has been included in this parameter.

3.0 REFERENCES

1. WCAP-9272-P-A, Westinghouse Reload Safety Evaluation Methodology, July 1985.

2. WCAP-10054-P-A and WCAP-10081-A, "Westinghouse Small Break ECCS Evaluation Model Using the NOTRUMP Code," August 1985.

3. WCAP-10054-P-A, Addendum 2, Revision 1, "Addendum to the Westinghouse Small Break ECCS Evaluation Model Using the NOTRUMP Code: Safety Injection into the Broken Loop and COSI Condensation Model," July 1997.

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-8 Revision 0

4. WCAP-11145-P-A, "Westinghouse Small Break LOCA ECCS Evaluation Model Generic Study with the NOTRUMP Code," October 1986.

5. WCAP-10079-P-A, "NOTRUMP - A Nodal Transient Small Break and General Network Code," August 1985.

6. WCAP-16009-P-A, "Realistic Large-Break LOCA Evaluation Methodology Using the Automated Statistical Treatment of Uncertainty Method (ASTRUM)," January 2005.

7. WCAP-12610-P-A, "VANTAGE+ Fuel Assembly Reference Core Report," April 1995.

8. WCAP-10216-P-A, Revision 1A, Relaxation of Constant Axial Offset Control FQ -

Surveillance Technical Specification, February 1994.

9. WCAP-11397-P-A, "Revised Thermal Design Procedure," April 1989.

10. WCAP-14710-P-A, "1-D Heat Conduction Model for Annular Fuel Pellets," May 1998.

11. WCAP-8745-P-A, "Design Basis for the Thermal Overpower T and Thermal Overtemperature T Trip Functions," September 1986.

12. WCAP-12610-P-A & CENPD-404-P-A, Addendum 1-A, Optimized ZIRLOTM, July 2006.

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-9 Revision 0 Figure COLR-1 Reactor Safety Limits 670 I

I I

+

• r

.J. J

~.

l 650

+ I. -

"!

• 1

• 1

+ !. t -

• 630 610 ii:'

590 570 r

+

550 530 0

0.2 0.4 0.6 0.8 1..2 1.4 Power (fraction of 1775 MWt)

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-10 Revision 0 Figure COLR-2 REQUIRED SHUTDOWN MARGIN (2500, 1.80)

(0, 1.80)

(2500, 1.30)

(0, 1.30) 0 0.5 1

1.5 2

2.5 3

0 500 1000 1500 2000 2500 SHUTDOWN MARGIN REQUIRED (% delta K/K)

COOLANT BORON CONCENTRATION (ppm)

One Loop Operation Two Loop Operation ACCEPTABLE OPERATION UNACCEPTABLE OPERATION

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-11 Revision 0

• The top of the active fuel corresponds to 219. The ARO parking position may be any position above the corresponding top of active fuel for each respective bank. The control rod tip-to-tip distance is defined as 130 steps while rods are moving in overlap. The bank positions are given as follows:

x Bank D:

(184/70) * (P-100) + 184 (for 30 P 100) x Bank C:

(184/70) * (P-100) + 184 + 130 (for 0 P 66.20) x Bank B:

(184/70) * (P-100) + 184 + 130 + 130 (for 0 P 16.74)

Where P is defined as the core power (in percent).

Figure COLR-3 CONTROL BANK INSERTION LIMITS 240 220 200

~ 180 I!,,

.c 160

~

Q. 140 i° 120 0

j::

iii 100 0 "-

"" z 80

<I:

<II O

60 0 a:

40 20 0

V (1,.46, 219)

/

(63 91, 219)

/

/

V B Bank I V

(100 184)

(0, 18 1)

/

/

/ I CBank I

/

/

V

/

/

/

/

/

/

O Bank I

/

/

V (o, s,l

/

~

V (30,0) /

0 10 20 30 40 so 60 70 80 90 100 CORE POWER (Percent of 1,775 MWT)

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-12 Revision 0 Figure COLR-4 K(Z) - NORMALIZED FQ(Z) AS A FUNCTION OF CORE HEIGHT 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0.0 2.0 4.0 6.0 8.0 10.0 12.0 Normalized Axial Peaking Factor (K(Z))

Elevation (ft)

Total FQ = 2.600 Elevation (ft) K(Z) 0.0 1.0 12.0 1.0

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-13 Revision 0 Figure COLR-5 AXIAL FLUX DIFFERENCE ACCEPTABLE OPERATION LIMITS AS A FUNCTION OF RATED THERMAL POWER 120 110

(-12, 100)

(+6, 100) 100 90 C:

80 a,..,...

a, 70 0

a.

60

"' E a,

50

.s::.....

I

\\

I Unacceptable Unacceptable Operation I

\\

Operation J

\\

I Acceptable

\\

I Operation

\\

'C a,

40

(-30, 50)

(+24, 50)

~

30 20 10 0

-50

-40

-30

-20

-10 0

10 20 30 40 50 Axial Flux Difference (percent 6 1)

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-14 Revision 0 Table COLR-1 RAOC Summary of W(Z) with HFP %AFD Band of -12/+6%

(Top 8% and Bottom 8% Excluded)

Height (feet) 150 MWD/MTU 5000 MWD/MTU 10000 MWD/MTU 16000 MWD/MTU (Bottom) 0.00 1.0000 1.0000 1.0000 1.0000 0.17 1.0000 1.0000 1.0000 1.0000 0.33 1.0000 1.0000 1.0000 1.0000 0.50 1.0000 1.0000 1.0000 1.0000 0.67 1.0000 1.0000 1.0000 1.0000 0.83 1.0000 1.0000 1.0000 1.0000 1.00 1.4003 1.3059 1.2831 1.2748 1.17 1.3892 1.2962 1.2745 1.2669 1.33 1.3769 1.2855 1.2647 1.2577 1.50 1.3624 1.2727 1.2531 1.2467 1.67 1.3466 1.2590 1.2403 1.2347 1.83 1.3306 1.2458 1.2273 1.2224 2.00 1.3127 1.2322 1.2128 1.2085 2.17 1.2942 1.2184 1.1977 1.1943 2.33 1.2765 1.2049 1.1834 1.1805 2.50 1.2575 1.1906 1.1685 1.1650 2.67 1.2393 1.1764 1.1529 1.1524 2.83 1.2251 1.1632 1.1390 1.1455 3.00 1.2162 1.1495 1.1319 1.1409 3.17 1.2102 1.1411 1.1297 1.1378 3.33 1.2041 1.1397 1.1282 1.1358 3.50 1.1973 1.1386 1.1268 1.1337 3.67 1.1903 1.1366 1.1253 1.1311 3.83 1.1832 1.1346 1.1236 1.1283 4.00 1.1750 1.1319 1.1213 1.1260 4.17 1.1667 1.1288 1.1186 1.1247 4.33 1.1596 1.1255 1.1159 1.1237 4.50 1.1530 1.1216 1.1126 1.1223 4.67 1.1465 1.1175 1.1091 1.1204 4.83 1.1399 1.1132 1.1055 1.1183 5.00 1.1324 1.1082 1.1017 1.1155 5.17 1.1247 1.1032 1.0969 1.1126 5.33 1.1171 1.0981 1.0922 1.1098 5.50 1.1084 1.0914 1.0920 1.1067 5.67 1.1006 1.0887 1.0934 1.1057 5.83 1.0965 1.0923 1.0959 1.1085

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-15 Revision 0 Table COLR-1 (Continued)

RAOC Summary of W(Z) with HFP %AFD Band of -12/+6%

(Top 8% and Bottom 8% Excluded)

Height (feet) 150 MWD/MTU 5000 MWD/MTU 10000 MWD/MTU 16000 MWD/MTU 6.00 1.0982 1.0979 1.1000 1.1142 6.17 1.1028 1.1041 1.1055 1.1205 6.33 1.1057 1.1094 1.1111 1.1256 6.50 1.1083 1.1147 1.1167 1.1304 6.67 1.1106 1.1194 1.1215 1.1345 6.83 1.1122 1.1233 1.1255 1.1377 7.00 1.1132 1.1268 1.1293 1.1409 7.17 1.1138 1.1298 1.1326 1.1437 7.33 1.1139 1.1323 1.1354 1.1455 7.50 1.1136 1.1344 1.1377 1.1466 7.67 1.1128 1.1358 1.1392 1.1468 7.83 1.1113 1.1363 1.1398 1.1462 8.00 1.1091 1.1361 1.1398 1.1444 8.17 1.1061 1.1351 1.1386 1.1420 8.33 1.1024 1.1332 1.1366 1.1399 8.50 1.0981 1.1304 1.1357 1.1378 8.67 1.0925 1.1270 1.1355 1.1376 8.83 1.0857 1.1264 1.1362 1.1408 9.00 1.0844 1.1298 1.1394 1.1458 9.17 1.0858 1.1400 1.1459 1.1509 9.33 1.0881 1.1485 1.1543 1.1550 9.50 1.0943 1.1574 1.1636 1.1578 9.67 1.1043 1.1671 1.1724 1.1611 9.83 1.1120 1.1765 1.1804 1.1681 10.00 1.1197 1.1860 1.1882 1.1750 10.17 1.1283 1.1947 1.1953 1.1840 10.33 1.1366 1.2026 1.2014 1.2027 10.50 1.1413 1.2103 1.2052 1.2221 10.67 1.1407 1.2158 1.2075 1.2349 10.83 1.1373 1.2166 1.2102 1.2413 11.00 1.1305 1.2124 1.2077 1.2381 11.17 1.0000 1.0000 1.0000 1.0000 11.33 1.0000 1.0000 1.0000 1.0000 11.50 1.0000 1.0000 1.0000 1.0000 11.67 1.0000 1.0000 1.0000 1.0000 11.83 1.0000 1.0000 1.0000 1.0000 12.00 (Top) 1.0000 1.0000 1.0000 1.0000

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-16 Revision 0 Table COLR-2 Penalty Factor for Increasing FQ Cycle Burnup (MWD/MTU)(a)

Penalty Factor

(%)

Penalty Multiplier 150 2.30 1.023 331 2.60 1.026 512 2.80 1.028 874 2.70 1.027 1055 2.40 1.024 1235 2.10 1.021 1416 2.00 1.020 6844 2.10 1.021 7567 2.00 1.020 (a) A penalty multiplier is not required for part power surveillances during startup.

The penalty factor should be applied beginning with the first full power surveillance.

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-17 Revision 0 Table COLR-3 Part-Power W(Z) Generated at 150 MWD/MTU, 75% and 50% Power (Top 8% and Bottom 8% Excluded)

Height (feet)

HFP ARO 75% D at 180 Steps 50% D at 169 Steps (Bottom) 0.00 1.0000 1.0000 1.0000 0.17 1.0000 1.0000 1.0000 0.33 1.0000 1.0000 1.0000 0.50 1.0000 1.0000 1.0000 0.67 1.0000 1.0000 1.0000 0.83 1.0000 1.0000 1.0000 1.00 1.4003 1.4559 1.5713 1.17 1.3892 1.4405 1.5510 1.33 1.3769 1.4242 1.5294 1.50 1.3624 1.4052 1.5036 1.67 1.3466 1.3853 1.4766 1.83 1.3306 1.3655 1.4503 2.00 1.3127 1.3435 1.4217 2.17 1.2942 1.3209 1.3927 2.33 1.2765 1.2997 1.3655 2.50 1.2575 1.2768 1.3366 2.67 1.2393 1.2551 1.3090 2.83 1.2251 1.2375 1.2863 3.00 1.2162 1.2251 1.2688 3.17 1.2102 1.2156 1.2544 3.33 1.2041 1.2063 1.2405 3.50 1.1973 1.1963 1.2257 3.67 1.1903 1.1861 1.2108 3.83 1.1832 1.1759 1.1964 4.00 1.1750 1.1645 1.1805 4.17 1.1667 1.1530 1.1646 4.33 1.1596 1.1431 1.1507 4.50 1.1530 1.1336 1.1371 4.67 1.1465 1.1242 1.1244 4.83 1.1399 1.1150 1.1121 5.00 1.1324 1.1047 1.0988 5.17 1.1247 1.0948 1.0857 5.33 1.1171 1.0853 1.0735 5.50 1.1084 1.0744 1.0596 5.67 1.1006 1.0642 1.0464 5.83 1.0965 1.0580 1.0385

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-18 Revision 0 Table COLR-3 (Continued)

Part-Power W(Z) Generated at 150 MWD/MTU, 75% and 50% Power (Top 8% and Bottom 8% Excluded)

Height (feet)

HFP ARO 75% D at 180 Steps 50% D at 169 Steps 6.00 1.0982 1.0573 1.0352 6.17 1.1028 1.0593 1.0344 6.33 1.1057 1.0599 1.0324 6.50 1.1083 1.0601 1.0305 6.67 1.1106 1.0608 1.0289 6.83 1.1122 1.0610 1.0273 7.00 1.1132 1.0606 1.0251 7.17 1.1138 1.0601 1.0229 7.33 1.1139 1.0594 1.0207 7.50 1.1136 1.0586 1.0190 7.67 1.1128 1.0578 1.0173 7.83 1.1113 1.0566 1.0157 8.00 1.1091 1.0552 1.0142 8.17 1.1061 1.0536 1.0128 8.33 1.1024 1.0517 1.0114 8.50 1.0981 1.0504 1.0107 8.67 1.0925 1.0484 1.0098 8.83 1.0857 1.0457 1.0071 9.00 1.0844 1.0490 1.0060 9.17 1.0858 1.0557 1.0059 9.33 1.0881 1.0626 1.0059 9.50 1.0943 1.0710 1.0110 9.67 1.1043 1.0819 1.0198 9.83 1.1120 1.0898 1.0263 10.00 1.1197 1.0983 1.0319 10.17 1.1283 1.1075 1.0380 10.33 1.1366 1.1157 1.0433 10.50 1.1413 1.1190 1.0443 10.67 1.1407 1.1159 1.0399 10.83 1.1373 1.1097 1.0331 11.00 1.1305 1.1021 1.0261 11.17 1.0000 1.0000 1.0000 11.33 1.0000 1.0000 1.0000 11.50 1.0000 1.0000 1.0000 11.67 1.0000 1.0000 1.0000 11.83 1.0000 1.0000 1.0000 12.00 (Top) 1.0000 1.0000 1.0000

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-19 Revision 0 Table COLR-4 Required Operating Space Reduction When FQW(Z) Exceeds Its Limits Required FQW(Z)

Margin Improvement THERMAL POWER Reduction (% RTP)

Negative AFD Band Reduction (% AFD)

Positive AFD Band Reduction (% AFD) 1%

3%

1%

1%

> 1% AND 2%

6%

2%

2%

> 2% AND 3%

9%

3%

3%

> 3%

50%

N/A N/A

COLR Cycle 45 R. E. Ginna Nuclear Power Plant COLR-20 Revision 0 End Notes

1.

Limits generated using Reference 1.

2.

Limits generated using References 1 through 8 and 10.

3.

Limits generated using References 1 and 8.

4.

Limits generated using Reference 9.

5.

Limits generated using Reference 11.