ML071310349

Cycle 16, Core Operating Limits Report, Revision 0

ML071310349
Person / Time
Site:	Callaway
Issue date:	03/31/2007
From:	Malek E, Schueren P Westinghouse
To:	Office of Nuclear Reactor Regulation
References
NF-SCP-07-27
Download: ML071310349 (13)

Text

Callaway Cycle 16 Core Operating Limits Report Revision 0 March 2007 Edited by:

E. M. Malek P. Schueren Approved:

R. Sisk, Manager Fuel Engineering Licensing "Electronically Approved Records Are Authenticated in the Electronic Document Management System" Westinghouse Electric Company LLC P.O. Box 355 Pittsburgh, PA 15230-0355

©2007Westinghouse Electric Company LLC All Rights Reserved NF-SCP-07-27 Reviewed by:

Approved by:

Callaway Cycle 16 COLR Rev. 0 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Callaway Plant Cycle 16 has been prepared in accordance with the requirements of Technical Specification 5.6.5.

The Core Operating Limits 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 1

Callaway Cycle 16 COLR Rev. 0 2.0 OPERATING LIMITS 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 200'F.

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/°F.

This limit shall be referred to as the lower limit.

2.2.2 The MTC 300 ppm surveillance limit is -40.4 pcmi/F (all rods withdrawn, Rated Thermal Power condition).

2.2.3 The MTC 60 ppm surveillance limit is -45.5 pcm/°F (all rods withdrawn, Rated Thermal Power condition).

2

Callaway Cycle 16 COLR Rev. 0 7I I I l i ll l l l l

'-4 0

,TO, UACCEPTABLE OPERATION  :

'P4.

0 III LI L 0 , ll 0

0 10 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMAL POWER Figure 1 Callaway Cycle 16 Moderator Temperature Coefficient Versus Power Level 3

Callaway Cycle 16 COLR Rev. 0 2.3 Shutdown Bank Insertion Limits (Specification 3.1.5)

The shutdown banks shall be withdrawn to at least 225 steps.

2.4 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.

2.4.3 The difference between each sequential Control Bank position is 115 steps when not fully inserted and not fully withdrawn.

4

Callaway Cycle 16 COLR Rev. 0 2251 225ý 28 125)

Li (78,225) L

d. (78,225) L

-JjeqLF(2T_T2 IIfifi ------1 1 1 1 1 1 11 1-Y ! 1 1 1 1 11 1 1 11 1 1 11

/,:BANK B . . . ..

17  ::::

i[/[

i i(100,161) i E.-1 H

l IsI I 'Al 1"4I IM 0

H BANK D IA II 15 a ' 1 0

m 0

1 0,

I#I 0 10 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMAL POWER Figure 2 Callaway Cycle 16 Rod Bank Insertion Limits Versus Rated Thermal Power - Four Loop Operation 5

Callaway Cycle 16 COLR Rev. 0 2.5 Heat Flux Hot Channel Factor - FQ(Z)

(Specification 3.2.1)

FQP'*

FQ(Z) <

• K(Z) for P > 0.5 P

FQ FQ(Z)_<

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

RATED THERMAL POWER 2.5.1 FQRTI = 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 bumups up to 20000 MWD/MTU in Cycle 16. This permits determination of W(z) at any cycle burnup up to 20000 MWDiMTU through the use of three point interpolation. For cycle burnups greater than 20000 MWD/MTU, use of 20000 MWD/MTU W(z) values without interpolation or extrapolation is conservative. The W(z) values were determined assuming Cycle 16 operates with RAOC strategy. Also included is a W(z) function that bounds the W(z) values for all Cycle 16 burnups. Use of the bounding W(z) values will be conservative for any Cycle 16 bumup; however, additional margin may be gained by using the burnup dependent W(z) values.

The W(z) values are provided for 73 axial points within the core height boundaries of 0 and 12 feet at intervals of 0.17 feet.

Table A.2 shows the burnup dependent FQ penalty factors for Cycle 16. These values shall be used to increase FQW(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

Callaway Cycle 16 COLR Rev. 0 Table A.1 W(z) versus Core Height (Top and Bottom 6% Excluded)

Height 150 '4000 10000 20000 Bounding (feet) MWD/MTU MWD/MTU MWD/MTU MWD/MTU WW) 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 1.3934 1.4732 1.4016 1.3370 1.4732 1.00 1.3853 1.4618 1.3944 1.3324 1.4618 1.17 1.3730 1.4462 1.3835 1.3244 1.4462 1.33 1.3588 1.4281 1.3704 1.3144 1.4281 1.50 1.3438 1.4084 1.3559 1.3039 1.4084 1.67 1.3284 1.3877 1.3405 1.2930 1.3878 1.83 1.3122 1.3662 1.3244 1.2817 1.3662 2.00 1.2951 1.3436 1.3076 1.2699 1.3436 2.17 1.2774 1.3202 1.2904 1.2578 1.3202 2.33 1.2594 1.2965 1.2733 1.2455 1.2967 2.50 1.2412 1.2730 1.2568 1.2332 1.2732 2.67 1.2240 1.2488. 1.2426 1.2203 1.2509 2.83 1.2093 1.2253 1.2316 1.2072 1.2327 3.00 1.1969 1.2105 1.2225 1.1985 1.2225 3.17 1.1886 1.2022 1.2145 1.1949 1.2146 3.33 1.1859 1.1936 1.2071 1.1936 1.2084 3.50 1.1833 1.1867 1.2008 1.1936 1.2030 3.67 1.1797 1.1821 1.1952 1.1944 1.1987 3.83 1.1771 1.1788 1.1896 1.1998 1.2005 4.00 1.1752 1.1752 1.1834 1.2052 1.2052 4.17 1.1732 1.1709 1.1768 1.2091 1.2091 4.33 1.1706 1.1662 1.1705 1.2121 1.2121 4.50 1.1675 1.1610 1.1640 1.2143 1.2143 4.67 1.1639 1.1552 1.1573 1.2152 1.2152 4.83 1.1596 1.1490 1.1508 1.2150 1.2150 5.00 1.1552 1.1421 1.1439 1.2136 1.2136 5.17 1.1495 1.1349 1.1366 1.2108 1.2108 5.33 1.1425 1.1273 1.1289 1.2065 1.2065 5.50 1.1412 1.1182 1.1198 1.2025 1.2025 5.67 1.1457 1.1101 1.1134 1.2015 1.2015 5.83 1.1505 1.1086 1.1178 1.2059 1.2059 6.00 1.1588 1.1088 1.1267 1.2145 1.2145 6.17 1.1709 1.1129 1.1420 1.2247 1.2247 6.33 1.1837 1.1213 1.1562 1.2340 1.2340 6.50 1.1958 1.1315 1.1693 1.2424 1.2424 6.67 1.2065 1.1420 1.1815 1.2504 1.2504 6.83 1.2158 1.1529 1.1923 1.2583 1.2583 7

Callaway Cycle 16 COLR Rev. 0 Table A. 1 W(z) versus Core Height (Top and Bottom 6% Excluded)

Height 150 4000 10000 20000 Bounding (feet) MWD/MTU MWD/MTU MWD/MTU MWD/MTU W(z) 7.00 1.2239 1.1643 1.2019 1.2656 1.2656 7.17 1.2301 1.1759 1.2100 1.2714 1.2714 7.33 1.2339 1.1874 1.2160 1.2754 1.2754 7.50 1.2387 1.1981 1.2220 1.2777 1.2777 7.67 1.2447 1.2079 1.2283 1.2782 1.2782 7.83 1.2489 1.2168 1.2330 1.2770 1.2773 8.00 1.2540 1.2237 1.2378 1.2739 1.2739 8.17 1.2617 1.2304 1.2439 1.2691 1.2691 8.33 1.2703 1.2410 1.2500 1.2630 1.2715 8.50 1.2763 1.2517 1.2550 1.2540 1.2763 8.67 1.2797 1.2606 1.2584 1.2448 1.2797 8.83 1.2854 1.2708 1.2608 1.2438 1.2858 9.00 1.2946 1.2800 1.2603 1.2449 1.2955 9.17 1.3059 1.2883 1.2571 1.2502 1.3065 9.33 1.3159 1.3007 1.2572 1.2580 1.3178 9.50 1.3218 1.3167 1.2605 1.2633 1.3273 9.67 1.3254 1.3335 1.2719 1.2679 1.3350 9.83 1.3343 1.3484 1.2818 1.2831 1.3484 10.00 1.3486 1.3690 1.2906 1.3017 1.3692 10.17 1.3669 1.3982 1.2994 1.3172 1.3982 10.33 1.3877 1.4279 1.3078 1.3318 1.4279 10.50 1.4104 1.4550 1.3195 1.3459 1.4550 10.67 1.4333 1.4782 1.3351 1.3590 1.4782 10.83 1.4540 1.4975 1.3494 1.3700 1.4975 11.00 1.4690 1.5123 1.3597 1.3770 1.5123 11.17 1.4723 1.5199 1.3651 1.3763 1.5199 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

Callaway Cycle 16 COLR Rev. 0 Table A.2 FQ Penalty Factors as a Function of Cycle Bumup Cycle 16 Burnup FoW(z) Penalty Factor (%)

1009 2.06 1180 2.33 1352 2.31 1524 2.26 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

Callaway Cycle 16 COLR Rev. 0 1.20 I II II I I III III I III I I I 11111 III II III III II I 1.10 I III

)) h II 11 i1 11111111 .LL LIIII411*IIIII I III I I. I. ýI ýI . . ! i i i . I I I . . .. II II III 11 - tiijiiii I I I j(0, 1. 00) H (6, 1. 00) W II I Ii I I II

-f-I(14, I I I

1.00 I;-

0.90 11111 0.80 11 1 11 1 ill IMMl11 11 ! ! M!M1111 NQ 0.70 -I-ca .I.II II I . I I I . I I I III . .I I I . . I. . I I . .I . . I . I .I I . . .I 0.60 FQ Elevation (ft.) K (z) 0.50 d 0.0 1.00 2.50 0.40 -f '4 III 2.50 2.31 6.0 12.0

. . . . . . . .. . . . I . I I . . . I I . . .

1.00 0.925 I

II i i ! !; i i i ! i ; ! I I 0.30 0.20 0.10 I I I I 'I I I::

0.00 I I I 0 1 2 3 4 5 6 7 8 9 10 11 12 CORE HEIGHT (FEET)

Figure 3 Callaway Cycle 16 K(z) - Normalized FQ(z) as a Function of Core Height 10

Callaway Cycle 16 COLR Rev. 0 2.6 Nuclear Enthalpy Rise Hot Channel Factor - FAHlN (Specification 3.2.2)

FAHN _FAHRTP [I + PFAH( -P)]

THERMAL POWER where: P =

RATED THERMAL POWER 2.6.1 FAHRTr = 1.59 2.6.2 PFA = 0.3 2.7 Axial Flux Difference (Specification 3.2.3)

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

11

Callaway Cycle 16 COLR Rev. 0 120[ LM I 1101 I  : I:~I: : 1

)%) Ii L Ll I00o 4-H+H UNACCEPTABL UNACCEPTABLEý P4 OPERATION 90 OPERATION

• 1~ ., 1; . .

80 ACCEPTA BLE 0 70 II OPERATION I 60 Ei 50

(-30, 50%)I (+26,  ! 0) -

4U 3n 10 I I I I I I I I I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I I

-50 -40 -30 -20 -10 0 10 20 30 40 50 AXIAL FLUX DIFFERENCE (% DELTA-I)

Figure 4 Callaway Cycle 16 Axial Flux Difference Limits as a Function of Rated Thermal Power for RAOC 12