ULNRC-05228, Core Operating Limits Report, Rev. 0

Core Operating Limits Report, Rev. 0

ML053260445
Person / Time
Site:	Callaway
Issue date:	11/04/2005
From:	Keith Young AmerenUE
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ULNRC-05228
Download: ML053260445 (15)

Text

AmerenUE Callaway Plant PO Box 620 Fulton, MO 05251 November 4, 2005 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-137 Washington, DC 20555-0001 Ladies and Gentlemen:

ULNRC-05228 WAmeren UE CALLAWAY PLANT DOCKET NUMBER 50-483 CORE OPERATING LIMITS REPORT Attached is the Callaway Plant Cycle 15 Core Operating Limits Report (COLR), Revision 0. This report is provided to the NRC Staff for information.

It has been prepared in accordance with the requirements of Technical Specification 5.6.5.

If you have any questions concerning this report, please contact us.

Very truly yours, thD. Young Manager, Regulatory Affairs DJWN/jdg

Attachment:

Callaway Cycle 15 Core Operating Limits Report, Rev. 0 2
00'

a subsidiary of Ameren Corporation

ULNRC-05228 November 4, 2005 Page 2 cc:

U.S. Nuclear Regulatory Commission (Original and I copy)

Attn: Document Control Desk Mail Stop P1-137 Washington, DC 20555-0001 Mr. Bruce S. Mallett Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Jack N. Donohew (2 copies)

Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 7E1 Washington, DC 20555-2738 Missouri Public Service Commission Governor Office Building 200 Madison Street PO Box 360 Jefferson City, MO 65102-0360 Deputy Director Department of Natural Resources P.O. Box 176 Jefferson City, MO 65102

Callaway Cycle 15 COLR Rev. 0 CALLAWAY CYCLE 15 CORE OPERATING LIMITS REPORT (Revision 0)

September 2005 Reviewed By:

X

,L t-lo-Z5-05 Approved By:

/

b Curve Book Figure 13-1, Rev. 44

Callaway Cycle 15 COLR Rev. 0 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Callaway Plant Cycle 15 has been prepared in accordance with the requirements of Technical Specification 5.6.5.

The Core Operating Lirnits affecting the following Technical Specifications are included in this report.

3.1.1, 3.1.4,3.1.5, 3.1.6, 3.1.8 Shutdown Margin 3.1.3 Moderator Temperature Coefficient 3.1.5 Shutdown Bank Insertion Limits 3.1.6 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor 3.2.3 Axial Flux Difference Curve Book Figure 1 3-1, Rev. 44

Callaway Cycle 15 COLR Rev. 0 2.0 OPERATING IMAITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the subsections which follow. These limits have been developed using the NRC-approved methodologies specified in Technical Specification 5.6.5.

2.1 Shutdown Margin (Specifications 3.1.1, 3.1.4, 3.1.5, 3.1.6, and 3.1.8) 2.1.1 The Shutdown Margin in MODES 1-4 shall be greater than or equal to 1.3% Ak/k.

2.1.2 The Shutdown Margin prior to blocking Safety Injection below P-1I in MODES 3 and 4 shall be greater than 0% Ak/k as calculated at 2000F.

2.1.3 The Shutdown Margin in MODE 5 shall be greater than or equal to 1.0% Ak/k.

2.2 Moderator Temperature Coefficient (Specification 3.1.3) 2.2.1 The Moderator Temperature Coefficient shall be less positive than the limits shown in Figure 1. These limits shall be referred to as upper limit.

The Moderator Temperature Coefficient shall be less negative than 47.9 pcm/0F.

This limit shall be referred to as the lower limit.

2.2.2 The MTC 300 ppm surveillance limit is -40.4 pcmn/CF (all rods withdrawn, Rated Thermal Power condition).

2.2.3 The MTC 60 ppm surveillance limit is -45.5 pcn/IF (all rods withdrawn, Rated Thermal Power condition).

2 Curve Book Figure 13-1, Rev. 44

Callaway Cycle 15 COLR Rev. 0 7

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10 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMAL POWER Figure 1 Callaway Cycle 15 Moderator Temperature Coefficient Versus Power Level 3

Curve Book Figure 13-1, Rev. 44

Callaway Cycle 15 COLR Rev. 0 23 Shutdown Bank Insertion Limits (Specification 3.1.5)

The shutdown banks shall be withdrawn to at least 225 steps.

2A Control Bank Insertion Limits (Specification 3.1.6) 2.4.1 Control Bank insertion limits are specified by Figure 2.

2.4.2 Control Bank withdrawal sequence is A-B-C-D. The insertion sequence is the reverse of the withdrawal sequence.

2.43 The difference between each sequential Control Bank position is 115 steps when not fully inserted and not fully withdrawn.

4 Curve Book Figure 13-1, Rev. 44

Callaway Cycle 15 COLR Rv Rev. 0 22 I..

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L (78225 DI 11 (28.225) fl (78,225) U I I I I I I I I I 1 I 1 1 1 1 1 0 1 0 0 i 07f r-i 014 0

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70 80 90 100 PERC ENT OF RATED THERMAL POWER Figure 2 Callaway Cycle 15

.Rod Bank Insertion Limits Versus Rated Thermal Power - Four Loop Operation 5

Curve Book Figure 13-1, Rev. 44

CaUaway Cycle 15 COLR Rev. 0 2.5 Heat Flux Hot Channel Factor -FQ(Z)

(Specification 3.2.1)

FQRT FQ(Z) <

• K(Z) for P > 0.5 Up FQRTP FQ(Z) <

• K(Z) for P < 0.5 0.5 THERMAL POWER where:

P =

RATED THERMAL POWER 2.5.1 FQRIP = 2.50 2.5.2 K(Z) is provided in Figure 3.

2.5.3 The W(z) functions that are to be used in Technical Specification 3.2.1 and Surveillance Requirement 3.2.1.2 for determining FQW(z) are shown in Table A.1.

The W(z) values have been determined for several burnups up to 18000 MWD/MTU in Cycle 15. This permits determination of W(z) at any cycle burnup up to 18000 MWD/MTU through the use of three point interpolation. For cycle burnups greater than 18000 MWDIMTU, use of 18000 MWDIMTU W(z) values without interpolation or extrapolation is conservative.

The W(z) values were determined assuming Cycle 15 operates with RAOC strategy. Also included is a W(z) function that bounds the W(z) values for all Cycle 15 burnups. Use of the bounding W(z) values will be conservative for any Cycle 15 burnup; however, additional margin may be gained by using the burnup dependent W(z) values.

Table A.2 shows the burnup dependent FQ penalty factors for Cycle 15. These values shall be used to increase FQ (z) when required by Technical Specification Surveillance Requirement 3.2.1.2. A 2% penalty factor should be used at all cycle burnups that are outside the range of Table A.2.

6 Curve Book Figure 13-1, Rev. 44

Callaway Cycle 15 COLR Rev. 0 Table A.I W(z) versus Core Height (Top and Bottom 15% Excluded)

Height 150 1 4000 10000 18000 Bounding (feet)

MWDIMTU MWD/MTIU MWD/MTU MWD/MTU W(z) 0.00 (bottom) 1.0000 1.0000 1.0000 1.0000 1.0000 0.17 1.0000 1.0000 1.0000 1.0000 1.0000 0.33 1.0000 1.0000 1.0000 1.0000 1.0000 0.50 1.0000 1.0000 1.0000 1.0000 1.0000 0.67 1.0000 1.0000 1.0000 1.0000 1.0000 0.83 1.0000 1.0000 1.0000 1.0000 1.0000 1.00 1.0000 1.0000 1.0000 1.0000 1.0000 1.17 1.0000 1.0000 1.0000 1.0000 1.0000 1.33 1.0000 1.0000 1.0000 1.0000 1.0000 1.50 1.0000 1.0000 1.0000 1.0000 1.0000 1.67 1.0000 1.0000 1.0000 1.0000 1.0000 1.83 1.3165 1.3440 1.3502 1.2831 1.3535 2.00 1.2990 1.3215 1.3329 1.2722 1.3335 2.17 1.2809 1.2984 1.3150 1.2611 1.3150 2.33 1.2626 1.2753 1.2967 1.2499 1.2967 2.50 1.2441 1.2517 1.2781 1.2384 1.2781 2.67 1.2253 1.2291 1.2592 1.2268 1.2601 2.83 1.2064 1.2101 1.2403 1.2151 1.2422 3.00 1.1911 1.1952 1.2228 1.2039 1.2251 3.17 1.1817 1.1861 1.2105 1.1974 1.2130 3.33 1.1784 1.1829 1.2057 1.1974 1.2085 3.50 1.1768 1.1805 1.2039 1.1977 1.2072 3.67 1.1750 1.1772 1.2024 1.1988 1.2066 3.83 1.1725 1.1735 1.2001 1.2027 1.2069 4.00 1.1694 1.1693 1.1973 1.2072 1.2079 4.17 1.1657 1.1643 1.1938 1.2109 1.2110 4.33 1.1619 1.1586 1.1896 1.2136 1.2137 4.50 1.1591 1.1538 1.1846 1.2154 1.2154 4.67 1.1571 1.1498 1.1790 1.2166 1.2166 4.83 1.1548 1.1454 1.1726 1.2177 1.2177 5.00 1.1520 1.1404 1.1654 1.2178 1.2178 5.17 1.1483 1.1349 1.1576 1.2162 1.2162 5.33 1.1436 1.1290 1.1492 1.2130 1.2130 5.50 1.1421 1.1215 1.1395 1.2113 1.2113 5.67 1.1423 1.1153 1.1315 1.2108 1.2108 5.83 1.1471 1.1169 1.1324 1.2149 1.2149 6.00 1.1570 1.1211 1.1385 1.2244 1.2244 6.17 1.1698

.1.1286 1.1528 1.2369 1.2369 6.33 1.1807 1.1349 1.1652 1.2473 1.2473 7

Curve Book Figure 13-1, Rev. 44

Callaway Cycle 15 COLR Rev. 0 Table A.1 (continued)

W(z) versus Core Height (Top and Bottom 15% Excluded)

Height 150 4000 10000 18000 Bounding (feet)

MWDIMTU MWD/MTU MWD/MTU MWDJMTU W(z) 6.50 1.1916 1.1439 1.1762 1.2572 1.2572 6.67 1.2031 1.1560 1.1864 1.2669 1.2669 6.83 1.2141 1.1680 1.1951 1.2744 1.2744 7.00 1.2239 1.1801 1.2025 1.2800 1.2800 7.17 1.2324 1.1925 1.2082 1.2837 1.2837 7.33 1.2394 1.2046 1.2119 1.2853 1.2853 7.50 1.2448 1.2159 1.2158 1.2849 1.2849 7.67 1.2485 1.2260 1.2201 1.2824 1.2824 7.83 1.2504 1.2348 1.2229 1.2780 1.2780 8.00 1.2501 1.2424 1.2258 1.2709 1.2709 8.17 1.2481 1.2486 1.2302 1.2623 1.2706 8.33 1.2466 1.2536 1.2352 1.2553 1.2709 8.50 1.2466 1.2563 1.2385 1.2492 1.2717 8.67 1.2472 1.2582 1.2414 1.2465 1.2726 8.83 1.2478 1.2639 1.2498 1.2508 1.2746 9.00 1.2508 1.2720 1.2624 1.2584 1.2790 9.17 1.2614 1.2816 1.2762 1.2655 1.2893 9.33 1.2750 1.2945 1.2893 1.2724 1.3028 9.50 1.2883 1.3177 1.2996 1.2780 1.3216 9.67 1.3003 1.3516 1.3066 1.2820 1.3524 9.83 1.3124 1.3867 1.3125 1.2866 1.3867 10.00 1.3248 1.4220 1.3175 1.2922 1.4220 10.17 1.3392 1.4558 1.3218 1.2979 1.4558 10.33 1.0000 1.0000 1.0000 1.0000 1.0000 10.50 1.0000 1.0000 1.0000 1.0000 1.0000 10.67 1.0000 1.0000 1.0000 1.0000 1.0000 10.83 1.0000 1.0000 1.0000 1.0000 1.0000 11.00 1.0000 1.0000 1.0000 1.0000 1.0000 11.17 1.0000 1.0000 1.0000 1.0000 1.0000 11.33 1.0000 1.0000 1.0000 1.0000 1.0000 11.50 1.0000 1.0000 1.0000 1.0000 1.0000 11.67 1.0000 1.0000 1.0000 1.0000 1.0000 11.83 1.0000 1.0000 1.0000 1.0000 1.0000 12.00 (top) 1.0000 1.0000 1.0000 1.0000 1.0000 8

Curve Book Figure 13-1, Rev. 44

Callaway Cycle 15 COLR Rev. 0 Table A.2 FQ Penalty Factors as a Function of Cycle Burnup Cycle 15 Burnup 1351 1523 1694 1866 2038 FW(z) Penalty Factor (1o) 3.06 3.43 3.01 2.55 2.10 Note:

All cycle burnups not in the range of the above table shall use a 2.0% penalty factor for compliance with Surveillance Requirement 3.2.1.2.

For values of burnup between two of those listed in the first column, the greater of the two corresponding penalty factors shall be used for compliance with Surveillance Requirement 3.2.1.2.

9 Curve Book Figure 13 -1, Rev. 44

Callaway Cycle 15 COLR Rev. 0 1.20 1.10 1.00 0.90 0.80 N

0 am 0.70 N

i 0.70 H

1 0.60 I

0.50 W 0.40 0.30 0.20 0.10 0.00 0

1 2

3

4.

5 6

7 8

CORE HEIGHT (FEET) 9 10 11 12 Figure 3 Callaway Cycle 15 K(z) - Normalized Fa(z) as a Function of Core Height 10 Curve Book Figure 13-1, Rev. 44

Callaway Cycle 1S COLR Rev. 0 2.6 Nuclear Enthalpy Rise Hot Channel Factor - Fg, N (Specification 3.2.2)

FwIN < Fpt R 1 + PFAH(1-P))

THERMAL POWER where:

P =

RATED THERMAL POWER 2.6.1 FU,,RTP = 1.59 2.6.2 PFhII= 0.3 2.7 Axial Flux Difference (Specification 3.2.3)

The Axial Flux Difference (AFD) Limits are provided in Figure 4.

11 Curve Book Figure 13-1, Rev. 44

Callaway Cycle 15 COLR Rev, 0 1201 I I I I I I I 110 L00%)

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(% DELTA-I)

Figure 4

• Callaway Axial Flux Difference of Rated Thermal Cycle 15 Limits as a Function Power for RAOC

• More restrictive AFD limits exist for Cycle 15 operation. Refer to Curve Book Figure 1-1 12 Curve Book Figure 13-1, Rev. 44