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{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000
{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000
'JUN 2 9 200 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Gentlemen:
'JUN 2 9 200 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Gentlemen:
In the Matter of the ) Docket No. 50-390 Tennessee Valley Authority  
In the Matter of the                                       )                               Docket No. 50-390 Tennessee Valley Authority                                 )
)WATTS BAR NUCLEAR PLANT (WBN) UNIT I -CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 7, REVISION 5 The purpose of this letter is to provide Revision 5 of the Cycle 7 COLR in accordance with WBN Technical Specification 5.9.5.d. Revision 5 revises the axial flux difference (AFD) limit and the W(z) values. This revision was effective as of June 28, 2006.There are no regulatory commitments associated with this submittal.
WATTS BAR NUCLEAR PLANT (WBN) UNIT I - CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 7, REVISION 5 The purpose of this letter is to provide Revision 5 of the Cycle 7 COLR in accordance with WBN Technical Specification 5.9.5.d. Revision 5 revises the axial flux difference (AFD) limit and the W(z) values. This revision was effective as of June 28, 2006.
If you have any questions concerning this letter, please contact me at (423) 365-1824.Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs  
There are no regulatory commitments associated with this submittal. If you have any questions concerning this letter, please contact me at (423) 365-1824.
Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs


==Enclosure:==
==Enclosure:==


Watts Bar Nuclear Plant Unit 1, Cycle 7 Core Operating Limits Report, Revision 5 cc: See Page 2 Printed on recycled paper U.S. Nuclear Regulatory Commission Page 2 JUN 2.9 2006 Enclosure cc (Enclosure):
Watts Bar Nuclear Plant Unit 1, Cycle 7 Core Operating Limits Report, Revision 5 cc: See Page 2 Printed on recycled paper
NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Douglas V. Pickett, Senior Project Manager U.S. Nuclear Regulatory Commission MS 08G9a One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303 Enclosure Watts Bar Nuclear Plant Unit I Cycle 7 Core Operating Limits Report, Revision 5 I COLR for Watts Bar Unit 1, Cycle 7 QA Record L36 060627 802 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 7 CORE OPERATING LIMITS REPORT Revision 5 June 2006 Prepared by: am .VIeA0" 1 1760 Nuclear Fuel Date Verified by-. J , , / (,-"/0-8/0 Nuclear Fuel Date Reviewed by: L______Manager, Nucl Fuel Des Date Reactor Engineeri gr pervisor Date Approved by*~PORC Chairman / Date Plant Manager Date Date of PORC PORC Meeting Affected Revision Approval Number Pages Reason for Revision 0 3/111/05 4073 All Initial issue 1 3/18/05 4075 All Revised to remove cycle 7 1 1_ restriction to mode 6 2 5/31/05 4089 1, 9- 12 Revised maximum W(z) values 3 9/19/05 4107 1, 9- 12 Revised maximum W(z) values 4 3/13/06 4127 1, 10- 12 Revised maximum W(z) values 5 1,4 .. 1,4,8,.12 Revised AFD Limit and W(z)Unit 1 WATTS BAR Cycle 7 Revision 5 Page I of 18 COLR for Watts Bar Unit 1, Cycle 7 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 7 has been prepared In accordance with the requirements of the Technical Specifications 5.9.5.The Technical Specifications affected by this report are listed below: 3.1.4 Moderator Temperature Coefficient (MTC)3.1.6 Shutdown Bank Insertion Limits 3.1.7 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor (F 0 (Z))3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FAH)3.2.3 Axial Flux Difference (AFD)3.5.1 Accumulators 3.5.4 Refueling Water Storage Tank (RWST)3.9.1 Boron Concentration 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 the Technical Specifications Section 5.9.5.The following abbreviations are used in this section: BOL -- Beginning of Cycle Life ARO -- All Rods Out HZP -Hot Zero Thermal Power EOL -- End of Cycle Life RTP Rated Thermal Power Unit I Cycle 7 WATTS BAR Page 2 of 18 Revision I COLR for Watts Bar Unit 1, Cycle 7 Z.1 MODERATOR TEMPERATURE COEFFICIENT  
U.S. Nuclear Regulatory Commission Page 2 JUN 2.9 2006 Enclosure cc (Enclosure):
-MTC (LCO 3.1.4)2.1.1 The MTC limits are: The BOLJAROIHZP  
NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Douglas V. Pickett, Senior Project Manager U.S. Nuclear Regulatory Commission MS 08G9a One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303
-MTC shall be less positive than or equal to 0 Ak/kPF (upper limit). With the measured BOLIAROIHZP  
 
-MTC more positive than-0.80 x 10" Ak/kJ 0 F (as-measured MTC limit), establish control rod withdrawal limits to ensure the MTC remains less positive than or equal to 0 Ak/k/*F (upper limit) for all times in core life.The EOLUAROIRTP  
Enclosure Watts Bar Nuclear Plant Unit I Cycle 7 Core Operating Limits Report, Revision 5
-MTC shall be less negative than or equal to-4.5 x 10' Ak/k/*F (lower limit).2.1.2 The 300 ppm surveillance limit is: The measured 300 ppm IAROIRTP-MTC should be less negative than or equal to-3.75 x 10 Ak/k1 0 F.2.1.3 The 60 ppm surveillance limit is: The measured 60 ppm /ARO/RTP-MTC should be less negative than or equal to-4.28 x 10' Ak/kPF.2.2 SHUTDOWN BANK INSERTION LIMITS (LCO 3.1.6)2.2.1 The shutdown banks shall be withdrawn to a position greater than or equal to 225 steps withdrawn.
 
2.3 CONTROL BANK INSERTION LIMITS (LCO 3.1.7)2.3.1 The control banks shall be limited In physical insertion as shown in Figure 1.2.3.2 Table 1 shows the control rod overlap positions.
I COLR for Watts Bar Unit 1, Cycle 7 QA Record L36 060627 802 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 7 CORE OPERATING LIMITS REPORT Revision 5 June 2006 Prepared by:
Unit I Cycle 7 WATTS BAR Page 3 of 18 Revision 1 I COLR for Watts Bar Unit 1, Cycle 7 2.4 HEAT FLUX HOT CHANNEL FACTOR -FQ(Z) (LCO 3.2.1)Fo(Z)( [CFQ / PI
am .VIeA0"                                           1 1760 Nuclear Fuel                                                   Date Verified by-.         J
* K(Z) for P > 0.5 fO(Z) < [CFQ/0.51
                                                                      /, ,(,-"/0-8/0 Nuclear Fuel                                                   Date Reviewed by:             L______
* K(Z) for P <0.5 Where P Thermal Power /Rated Thrnmal Power 2.4.1 CFQ m 2.50 2.4.2 K(Z) is provided in Figure 2.2.4.3 FQc(Z) = FoM(Z) 1.0815 where: FQ"(Z) iF the measured value of Fq(Z) obtained fiom incore flux map results and 1.0815 is a factor that accounts for fuel manufacturing tolerances and flux map measurement uncertainty.
Manager, Nucl       Fuel Des                                   Date Reactor Engineeri gr     pervisor                             Date Approved by*~
2.4.4 Fiw(Z) -Fr'(Z)
PORC Chairman                 /                               Date Plant Manager                                                 Date Date of     PORC PORC       Meeting       Affected Revision       Approval     Number         Pages       Reason for Revision 0         3/111/05     4073             All     Initial issue 1         3/18/05       4075             All     Revised to remove cycle 7 1                       1_               restriction to mode 6 2         5/31/05       4089         1, 9- 12     Revised maximum W(z) values 3         9/19/05       4107         1, 9- 12     Revised maximum W(z) values 4         3/13/06       4127       1, 10- 12     Revised maximum W(z) values 5                         1,4 .. 1,4,8,.12     Revised AFD Limit and W(z)
* W(Z)where: W(Z) values are provided in Figures 4 through 7, only use W(7) values provided in Figure 7 for buraups greater than 16,000 MWD/MTU. The Figures providc sufficicnt information to determine W(Z) versus core height for all cycle burnups.I 2.4.5 Penalty Factor The F,)'(ZVi penalty factor is providcd iu Table A.].Unit I WATTS BAR Page 4 of 18 Cycle 7 Revision/.  
Unit 1                                                                                 Cycle 7 WATTS BAR                                   Page I of 18                             Revision 5
,/1.762 0 /0 (0 COLR for Watts Bar Unit 1, Cycle 7 2.5 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR -FaN (LCO 3.2.2)FA< ( 1 + PF * (l-P))where P = Thermal Power / Rated Thermal Power FAHrp = 1.65 for RFA-2 fuel, and Farp = 1.62 for VANTAGE+/PERFORMANCE+
 
fuel PF = 0.3 2.6 AXIAL FLUX DIFFERENCE  
COLR for Watts Bar Unit 1, Cycle 7 1.0   CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 7 has been prepared In accordance with the requirements of the Technical Specifications 5.9.5.
-AFD (LCO 3.2.3)2.6.1 The AFD limits for Cycle 7 are provided in Figure 3.2.7 REFUELING BORON CONCENTRATION (LCO 3.9.1)2.7.1 The refueling boron concentration shall be > 2000 ppm.2.8 ACCUMULATORS (LCO 3.5.1)2.8.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7.2.9 REFUELING WATER STORAGE TANK -RWST (LCO 3.5.4)2.9.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7.Unit 1 Cycle 7 WATTS BAR Page 5 of 18 Revision 1 I COLR for Watts Bar Unit 1, Cycle 7 250 231 225 200 I I I I I II I I I I I t III'''' ''f! II'! If Rk(0074.231)11 (0.832,231)
The Technical Specifications affected by this report are listed below:
I II I I V 1' I I I I I I I I I I I I (0.048,225 i i i i P i.. .. ........ ... .! ..5 L-(0.606.225)H I H (o.i jLtNK=B=, j--------------
3.1.4 Moderator Temperature Coefficient (MTC) 3.1.6 Shutdown Bank Insertion Limits 3.1.7 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor (F0 (Z))
111111 11 il l lll l 0 l l111111111.
3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FAH) 3.2.3 Axial Flux Difference (AFD) 3.5.1 Accumulators 3.5.4 Refueling Water Storage Tank (RWST) 3.9.1 Boron Concentration 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 the Technical Specifications Section 5.9.5.
I(1.0,187) 1 0 0I 0.x 175 7-r*wI 1 111111111 lix I:!I=! I !!! 1 1 11 11 1 1 111 171 1 1 1 1111 ill IJA I'IrIMTK&#xfd;Jjjj ix i i i i I 150 125 1111 1 !!! 171 !!! 11 11111-!-!
The following abbreviations are used in this section:
11 !!! 11 1 V1 111 1 i 11-1 I I I I = I I I I I I I=1 in HI HI i~ I iI I I ! H~ i i W H M H I Ii I !:::dIIII IIII 141 1 11 11f 1f 1 1f 1 11f 1f 11 11 B EANK I 11 11 F''11 IllH +/- ill 1 + 14 ,q I 75 50 25 1 1 1 MM11-1-r-11 MIM !?-!!!Ill 111 11111111 Ill 1 11 1111 !111 111 111V111111111 lill M 1 111 11]Mi! ! 1 1 1 2 1 1 1 1 1 1 1 1 1 1 ----1 11 !111 111 1 IPI 11 111 1 Q 1 1 1 1 1 ---Jill ! i i L4 111 F I [[ III IIIII 0 0 0.20 0.40 0.60 .0.80 FRACTION OF RATED THERMAL POWER 1.00 Figure 1 Control Bank Insertion Limits Versus Thermal Power Four Loop Operation* Fully withdrawn region shall be the condition where shutdown and control banks are at a position within the interval of 225 and 231 steps withdrawn.
BOL   --   Beginning of Cycle Life ARO   --   All Rods Out HZP   -     Hot Zero Thermal Power EOL   --   End of Cycle Life RTP         Rated Thermal Power Unit I                                                                             Cycle 7 WATTS BAR                               Page 2 of 18                           Revision I
Unit 1 WATTS BAR Cycle 7 Revision 1 Page 6 of 18 COLR for Watts Bar Unit 1, Cycle 7 CD 0 10 CD.NJ 0 z 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 More Ho-gh- --_0.000 1.000 6.000 1.000 12.00 0 0.9256 0 2 4 Core 6 8 10 12 Height (feet)Figure 2 K(Z) -Normalized FQ(Z) as a Function of Core Height Unit 1 WATTS BAR Cycle 7 Revision I Page 7 of 18 I COLR for Watts Bar Unit 1, Cycle 7 Z.e-50 30 10 0 10 20 30 40 50 Flux Diftemmce
 
(,& %Figure3a Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC)Unit 1 WA7TS BAR 8 of 18 Caiycl COLR for Watts Bar Unit 1, Cycle 7 1-40 &#xfd; tj I I I I I I I fill fill II I III fil l I I I if I III IF fill I I __T I I I I F-I L-H I I I I I 1111 1 111 1 1 TF fil l I III I I I LLU. 1: a Ii hi n 1 f f i .l Ii .I .i Ii~i .i .v .i it i 111111L LI111!! f1 fim! w1111 11111111ff ft I-1.20 1.1 I I f I if_FLL ItI I III III A II--A HeIght 0.0000 0.200 0.4000 0.6000 0.8000 1.0000 1.20XX 1.4000 1.6000 1.8000 2.0000 2.2000 2.4000 2.6000 2.8000 3.0000 3.2000 3.4000 B.6000 3.8000 4.0000 4.2000 4.4000 4.6000 4.8000 5.0000 6.2000 6.4000 6.6000 5.800M 6.0000 6.2000 6.4000 6.6000 6.8MOD 7.0000 7.2000 7.4000 7.6000 7.8000 8.0000.2000&4000 8.6000 8.8000 9.0000 9.2000 9.4000 9.6000 9.8M00 10.0000 10.2000 10.4000 10.6000 10.8000 11.0000 11.2000 11.4000 11.00 11.8000 12.0000 Max.W(z)1.0000 1.0000 1.0000 1.0000 LOOOO 1.0000 1.2512 1.2321 1.2157 1.1081 1.1793 1.1605 1.1410 1.1210 1.1104 1.1052 1.1019 1.1008 1.0998 1.1001 1.1036 1.1088 1.1132 1.1173 1.1206 1.1251 1.1349 1.1503 1.1648 1.7804 1.1972 1.2136 1.2283 1.2416 1.2531 1.2627 1.2703 1.2756 1.2786 1.2789 1.265 1.2714 1.2633 1.2515 1.2402 1.2382 1.2378 1.2404 1.2392 1.2345 1.2381 1.23516 1.2446 1.2503'1.2541 1.0000 1.9000 1.0000 I.D000 1.0000 1.0000 f i l l I I II I I II I I 1 1 1 1 11 1-f i l l I I I IL 11 T I 1JEfl I JL.O&#xfd; A = = -0 DOTT CM 2 3 4 5 6 a 9 9 10 TOP CORE HEIGHT (PEET)Figure 4 RAOC Summary of Max W(z) at 150 MWD/MTU with HFP AFD Band of .12/+6 %(Top aud Bottom 10% Excluded)Unit 1 WATTS BAR Page 9 of 18 Cycle 7 Revision 3 COLR for Watts Bar Unit 1, Cycle 7...................1.50 1.40 1.30 I IIIM~iiiiiiii MHM MiM MiMi MiM tt!!I!I 11A--------------------------------------
COLR for Watts Bar Unit 1, Cycle 7 Z.1   MODERATOR TEMPERATURE COEFFICIENT - MTC (LCO 3.1.4) 2.1.1 The MTC limits are:
I I IMCUI I I I I I I I I IL AVIII H-4441 4&#xfd;H III I**1111 El-I 11* ::z~ ,Iu ii~u ~ I N'WI II I II 111111111111111111111,111 111111 !!! 111 !!!! II Q...............................................Height(n)
The BOLJAROIHZP - MTC shall be less positive than or equal to 0 Ak/kPF (upper limit). With the measured BOLIAROIHZP - MTC more positive than
Max W(z).0.0000 1.0000 0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 0.8000 1.0000 1.0000 1.0000 1.2000 1.1439 1.4000 1.1319 1.6000) 1.1182 ,.B000 1.1033 2.0000 !.0885 2.200O 1.0732 2.4000 1.0579 2.6000 1.0425 2.8000 1.0331 3.0000 1.0298 3.2000 1.0304 3.4000 1.0344 3.6000 1.0387 3.8000 1.0458 4.0000 1.0550 4.2000 1.0635 4,4000 1.0725 4.6000 1.0814 4.8000 1.0903 6.0000 1.0OG5 52000 1.1081 5.400D 1.1258 5.6000 1.1453 5.8000 1.1664 6.0000 1.1884 6.2000 1.2104 6.4000 1.2299 6.6000 1.2475 6.8000 1.2640 7.0000 1.2791 7.2000 1.2927 7.4000 1.3051 7.6000 1.3168 7.8000 1.3241 8.0000 1.3=91 8.2000 1.3316 8.4000 1.3316 8.6000 1.3287 8.8000 1.3251 9.0000 1.3284 9.2000 1.3405 9.4000 1.3516 9.6000 1.3631 9.8000 1.3775 10.0000 1.3930 10.2000 1.4078 10.4000 1.421g 10.6000 1.4340 10.8000 1.4441 11.0000 1.000O 11.2000 1.0000 11.4000 1.0000 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 1.20 1.10.....lii 11111 III -- lii-lii..... .....E II!!! 1011111 !!!!!! 1 !!! 1 1111113M......111111kI11111111111 Iii11 1111 Iii111111Jll111111111 11111111 IM , IIIX I I I'll, I'll, I'll, 1113 I I 1 1. 01 1 1 1 MMMMMIIIIIIIIII
                -0.80 x 10" Ak/kJ0F (as-measured MTC limit), establish control rod withdrawal limits to ensure the MTC remains less positive than or equal to 0 Ak/k/*F (upper limit) for all times in core life.
---------------nt 1.00 DO I--.,-4 I...... ....1 1 1 1 .....I CORE HEIGHT (FEET)TOW dS, 2 4 5 b a 9 10 L I CORE HiEIGHT (FEET)Figure 5 RAOC Summary of Max W(z) at 3000 MWD/MTU with HFP AFD Band of -124+6 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Cycle7 Revision 4 I Page 10 of 18 COLR for Watts Bar Unit 1, Cycle 7.1. U50 1.401 1.30 N Holght(ft)
The EOLUAROIRTP - MTC shall be less negative than or equal to
Max W(z)0.0000 1.0000 0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 0.8000 1.0ooo 1.0000 1.0000 12000 1.1664 1.4000 1.1576 1.0000 1.14S7 1.8000 1.1349 2.0000 1.1240 2.2000 1.1125 2.4000 1.1009 26000 1.0891 2.8000 1.0766 3.0000 1.0716 3.2000 1.073S 3.4000 1.0756 3.6000 1.0773 3.8000 1.0792 4.0000 1.0829 4.2000 1.0881 4.4000 1.0947 4.6000 1.1006 4.8000 1.1071 6.0000 1.1135 5.2000 1.1215 5.4000 1.1390 5.6000 1.1572 5.8000 1.1743 6.0000 1.1898 6.2000 1.2042 6.4000 1.2163 6.6000 1.2269 6.8000 1.2356 7.0000 1.2425 7.2M0 1.2485 7.4000 1.2532 7.6000 1.2562 7.8000 1.2573 8.0000 1.2559 8.2000 1.2527 8.4000 1.2490 8.6000 1.2468 8.8a00 12478 9.0000 1.2511 9.2000 1.2586 9.4000 1.2634 9.6000 1.2666 9.8000 1.2670 10.0000 1.2667 10.2000 1.2677 10.4000 1.26059 10.6000 1.2636 10.8000 1.2635 11.0000 1.0000 112000 1.0oo0 11A000 1.0000 11.000 1.0000 11.8000 1.0000 12.0000 1.0000 1.20 1.o10 1. ooj BO 70X 2 3 5 6 7 a 9 10 11 I CORE HEIGHT (FEET)Figure 6 RAOC Summary of Max W(z) at 10000 MWD/MTU with HFP AFD Band of -12/+6 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Cycle 7 Revision 4 Page 11 of 18 COLR for Watts Bar Unit 1, Cycle 7 Height 14-.(fst) W(Z)O.W000 1.0000 0.2000 1.0000 1I* I0.400O 1.0000 0.0000 1.0000 0.8000 10000 1.0000 10000)1.2000 1.4848 1.40M0 1.470M 1.6M00 1.4649 IL8000 1.4371 V4 192.0000 1.4172 2.2000 1.3971 I AJII 12.4000 2X332 2.6000 1.3481 2.8000 1.3=18 3.0000 1.2047 3.2000 i.2754 3.4000 1.2617 3.M00 1.2488 I.I000 I31.2=4.0000 1.2284 A 4.2000 1.2188-- ------ 1.060""4.0000 1,1922 4.8000 1.2783 5.000O 1.1644 5.2000 1.1546 1.20 A.4wo 1.1236 6.6000 1.1541 5.8000 1.2551 0.0000 1.1"i8 6.2000 1.1542 I64000 1.156 6.6000 1.1491 I6.000 1.1441 11 1I7.000 L1392 7.2000 1.1331 7.4000 1.1279 7.6000 1.1215 7.8000 1.1137 8.0000 2.1060 8.2000 1.01 8.4000 1.0866 5.0000 1.0780 2 3 A 5 6 7 8 9 10 11 9.0000 1.08V 9.4000 1.0838 9.6000 1.0877 9.8000 1.0983 10.000 1.11M.10.200 1.139 10.400 1.1575 10.600 1.1782 10.8w0 1.1957 F -gure 7 11.000 1.0000 RAOC Summary of Max W(z) at 16000 M'WDlM 11.4%) J.Oo 1140 1.0o000 with EHFP AFD Band of -12410 % 11MGM) 1.0000 11.800 1.0000 (Top and Bottom 10% Excluded) sz00o 1.OOO Unit I Cycle 7 WATTS BAR Revision 5 LA 01 15 COLR for Watts Bar Unit 1, Cycle 7 Table A.1 FJW(Z) Penalty Factor Core Burnup (MWNDrt FQW(Z)Penalty Factor All burnups 1.0200 Note: 1. The Penalty Factor, which is applied to Fw(Z) for compliance with Surveillance Requirement 3.2.1.2.a, Is the maximum factor by which FW(Z) is expected to increase per 31 Effective Full Power Days (EFPD) starting from the burnup at which the FQw(Z) was determined.
                -4.5 x 10' Ak/k/*F (lower limit).
Unit 1 WATTS BAR Cycle 7 Revision 1 Page 13 of 18 COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band ABank BBank CBank DBank Overlap Counter (steps)0 0 2 2 4 4 6 6 8 8 10 10 12 12 14 14 16 16 18 18 20 20 22 22 24 24 26 26 28 28 30 30 32 32 34 34 36 36 38 38 40 40 42 42 44 44 46 46 48 48 50 50 52 52 54 54 56 56 58 58 60 60 62 62 64 64 66 66 68 68 70 70 Band A Bank B Bank C Bank D Bank Overlap Counter (steps)72 72 74 74 76 76 78 78 80 80 82 82 84 84 86 86 88 88 90 90 92 92 94 94 96 96 98 98 100 100 102 102 104 104 106 106 108 108 110 110 112 112 114 114 116 116 118 l18 120 120 122 122 124 124 126 126 128 128 0 130 130 2 132 132 4 134 134 6 136 136 8 138 138 10 140 140 12 142 142 14 Unit 1 WATTS BAR Cycle 7 Revision I Page 14 of 18 COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Overlap Counter (steps)144 144 16 146 146 18 148 148 20 150 150 22 152 152 24 154 154 26 156 156 28 158 158 30 160 160 32 162 162 34 164 164 36 166 166 38 168 168 40 170 170 42 172 172 44 174 174 46 176 176 48 178 178 50 180 180 52 182 182 54 184 184 56 186 186 58 188 188 60 190 190 62 192 192 64 194 194 66 196 196 68 198 198 70 200 200 72 202 202 74 204 204 76 206 206 78 208 208 80 210 210 82 212 212 84 214 214 86 216 216 88 218 218 90 Band A Bank B Bank C Bank D Bank Overlap Counter (steps)220 220 92 9 222 222 94 224 224 96 226 226 98 228 228 100 230 230 102 232 232 104 234 106 236 108 238 110 240 112 242 114 244 116 246 118 248 120 250 122 252 124 254 126 256 128 0 258 130 2 260 132 4 262 134 6 264 136 8 266 138 10 2G8 140 12 270 142 14 272 144 16 274 146 18 276 148 20 278 150 22 280 152 24 282 154 26 284 156 28 286 158 30 288 160 32 290 162 34 292 164 36 294 166 38 Unit 1 WATTS BAR Cycle 7 Revision 1 Page 15 of 18 COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Overlap Counter (steps)296 168 40 298 170 42 300 172 44 302 174 46 304 176 48 306 178 50 308 180 52 310 182 54 312 184 56 314 186 58 316 188 60 318 190 62 320 192 64 322 194 66 324 196 68 326 198 70 328 200 72 330 202 74 332 204 76 334 206 78 336 208 80 338 210 82 340 212 84 342 214 86 344 216 88 346 218 90 348 220 92 350 222 94 352 224 96 354 226 98 356 228 100 '358 230 102 360 232 104 362 106 364 108 366 110 368 112 Band ABank BBank CBank DBank Overlap Counter (steps)370 114 372 116 374 118 376 120 378 122 380 124 382 126 384 128 0 386 130 2 388 132 4 390 134 6 392 136 B 394 138 10 396 140 12 398 142 14 400 144 16 402 146 18 404 148 20 406 150 22 408 152 24 410 154 26 412 156 28 414 158 30 416 160 32 418 162 34 420 164 36 422 166 38 424 168 40 426 170 42 428 172 44 430 174 46 432 176 48 434 178 50 436 180 52 438 182 54 440 184 56 442 186 58 Unit 1 Cycle 7 WATTS BAR Page 16 of 18 Revision I COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank BBank C Bank D Bank Overlap Counter (steps)444 188 60 446 190 62 448 192 64 450 194 66 452 196 68 454 198 70 456 200 72 458 202 74 460 204 76 462 206 78 464 208 80 466 210 82 468 212 84 470 214 86 472 216 88 474 218 90 476 220 92 478 222 94 480 224 96 482 226 98 484 228 100 486 230 102 488 232 104 490 106 492 108 494 110 496 112 498 114 500 116 502 118 504 120 506 122 508 124 510 126 512 128 514 130 516 132 Band ABank BBank CBank DBank Overlap Counter (steps)518 134 520 136 522 138 524 140 526 142 528 144 530 146 532 148 534 150 536 152 538 154 540 156 542 158 544 160 546 162 548 164 550 166 552 168 554 170 556 172 558 174 560 176 562 178 564 180 566 182 568 184 570 186 572 188 574 190 576 192 578 194 580 196 582 198 584 200 586 202 588 204 590 206 Unit I WATTS BAR Cycle 7 Revision 1 Page 17 of 18 COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band ABank BBank CBank DBank Overlap Counter (steps)592 208 594 210 596 212 598 214 600 216 602 218 604 220 606 222 608 224 610 226 612 228 614 230 616 232 This information is provided in 2 step increments.
2.1.2 The 300 ppm surveillance limit is:
One step increments can be derived by interpolation.
The measured 300 ppm IAROIRTP-MTC should be less negative than or equal to
Fully withdrawn region shall be the condition where shutdown and control banks are at a position within the interval of Z_225 and 231 steps withdrawn.
                -3.75 x 10 Ak/k10 F.
The Table indicates a maximum step of 232 to be consistent with Z step increments.
2.1.3 The 60 ppm surveillance limit is:
Unit 1 Cycle 7 WATTS B3AR Page 18 of 18 Revision 1}}
The measured 60 ppm /ARO/RTP-MTC should be less negative than or equal to
                -4.28 x 10' Ak/kPF.
2.2   SHUTDOWN BANK INSERTION LIMITS (LCO 3.1.6) 2.2.1 The shutdown banks shall be withdrawn to a position greater than or equal to 225 steps withdrawn.
2.3   CONTROL BANK INSERTION LIMITS (LCO 3.1.7) 2.3.1 The control banks shall be limited In physical insertion as shown in Figure 1.
2.3.2 Table 1 shows the control rod overlap positions.
Unit I                                                                           Cycle 7 WATTS BAR                                 Page 3 of 18                         Revision 1
 
I COLR for Watts Bar Unit 1, Cycle 7 2.4   HEAT FLUX HOT CHANNEL FACTOR - FQ(Z) (LCO 3.2.1)
Fo(Z)*([CFQ / PI *K(Z)         for P > 0.5 fO(Z) < [CFQ/0.51
* K(Z)     for P <0.5 Where P     Thermal Power /Rated Thrnmal Power 2.4.1 CFQ m2.50 2.4.2 K(Z) is provided in Figure 2.
2.4.3 FQc(Z) =FoM(Z)     1.0815 where: FQ"(Z) iFthe measured value of Fq(Z) obtained fiom incore flux map results and 1.0815 is a factor that accounts for fuel manufacturing tolerances and flux map measurement uncertainty.
2.4.4 Fiw(Z) - Fr'(Z)
* W(Z) where: W(Z) values are provided in Figures 4 through 7, only use W(7) values provided in Figure 7 for buraups greater than 16,000 MWD/MTU. The Figures providc sufficicnt information to determine W(Z) versus core height for all cycle burnups.
I 2.4.5 F*w(Z)    Penalty Factor The F,)'(ZVi penalty factor is providcd iu Table A.].
Unit I                                                                                     Cycle 7 WATTS BAR                                     Page 4 of 18                               Revision/.   ,
                                                                                          /1.762 0/0(0
 
COLR for Watts Bar Unit 1, Cycle 7 2.5   NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR - FaN (LCO 3.2.2)
FA< FA*K*      ( 1 + PF * (l-P))
where P = Thermal Power / Rated Thermal Power FAHrp = 1.65 for RFA-2 fuel, and Farp = 1.62 for VANTAGE+/PERFORMANCE+ fuel PF     = 0.3 2.6   AXIAL FLUX DIFFERENCE - AFD (LCO 3.2.3) 2.6.1 The AFD limits for Cycle 7 are provided in Figure 3.
2.7   REFUELING BORON CONCENTRATION (LCO 3.9.1) 2.7.1 The refueling boron concentration shall be > 2000 ppm.
2.8   ACCUMULATORS (LCO 3.5.1) 2.8.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7.
2.9   REFUELING WATER STORAGE TANK - RWST (LCO 3.5.4) 2.9.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7.
Unit 1                                                                       Cycle 7 WATTS BAR                                 Page 5 of 18                   Revision 1
 
I COLR for Watts Bar Unit 1, Cycle 7 250         I I I I I II                                                     I I I I I t III''''           ''f!         II'!         If                         (0.832,231)           I          II 231 Rk(0074.231)11 I I V 1' I I I I I I I I I I I I 225            (0.048,225 i i i i   P i
                                        .. ..   . .......       ...     .! . . L-5  (0.606.225)H IH(o.i 200              jLtNK=Bj
                                  =,                                               --------------
111111                 11il l         lll l 0 l l111111111.                                         I(1.0,187) 1 175                                                 7-r*
wI 1 111111111 lix                                                                                           I
:!I=! I !!! 1 1 11 11 1 1 111 171 1 1 1 150            1111 ill         IJA           I'IrIMTK&#xfd;Jjjj                                     ix       i i i i I 0        1111 1 !!! 171 !!!                         11 11111-!-! 11 !!! 11 1 V1 111 1 i 11-1 0I 125  I I II=               I I II II I
                                                                                                                            =1 0.
x    in   HI         I  HI iI i~ I I ! H~             i     i W I IiHI    M       H               IIII      !:::dIIII 141 1             11f 11             1 1f 1f       111f 1f     11     11     EANK B         I   11     11 F                 ''11 +/-IllH ill+1 14 ,q I 75 1 1 1 MM11-1-r-11                           MIM           !?-!!!Ill 111 11111111 Ill 1 11 1111 !111 111 111V111111111 lill                                                   M 1 111 11]
50 Mi           !!       1 1 1 2 1 1 1 1 11 1 111- - - -
25 1 11 !111           111 1 IPI 11 111                                                                       1Q L4 111              F I [[                      III    IIIII 1 1 1 1 1 ---
0 Jill !           ii 0                   0.20                       0.40                 0.60 .               0.80                 1.00 FRACTION OF RATED THERMAL POWER Figure 1 Control Bank Insertion Limits Versus Thermal Power Four Loop Operation
* Fully withdrawn region shall be the condition where shutdown and control banks are at a position within the interval of&#x17d; 225 and
* 231 steps withdrawn.
Unit 1                                                                                                                     Cycle 7 WATTS BAR                                                   Page 6 of 18                                             Revision 1
 
COLR for Watts Bar Unit 1, Cycle 7 1.2 1.1 1.0 0.9 0.8 CD 0  0.7 10                                        More Ho-gh- - -_
0.6                                      0.000     1.000 CD                                          6.000     1.000
      .NJ                                                0 12.00     0.9256 0.5 0
z 0.4 0.3 0.2 0.1 0
0        2        4        6         8       10     12 Core Height (feet)
Figure 2 K(Z) - Normalized FQ(Z) as a Function of Core Height Unit 1                                                                   Cycle 7 WATTS BAR                           Page 7 of 18                       Revision I
 
I COLR for Watts Bar Unit 1, Cycle 7 Z.
e 40  -30   -20    -10     0       10 20 30   40   50 Flux Diftemmce (,& %
Figure3a Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC)
Unit 1 WA7TS BAR                         8 of 18                           Caiycl
 
COLR for Watts Bar Unit 1, Cycle 7 HeIght        Max.
W(z) 0.0000      1.0000 1-40 &#xfd; tj       II II II I                                                                                 0.200        1.0000 0.4000      1.0000 0.6000        1.0000 fill                                             0.8000        LOOOO fill     II I     III     fil l       I       I         I       if               I       1.0000      1.0000 1.20XX      1.2512 III        IF    fill         I       I       __T         II                      1.4000 1.6000 1.2321 I I F-I                               1.2157 1.8000      1.1081 2.0000      1.1793 2.2000      1.1605 L-H I         I       II    I                                                                 2.4000      1.1410 1111           1     111     1                               1 TF                             2.6000      1.1210 fil l         I     III     I                               I I                               2.8000      1.1104 LLU.         1:                                           a                                   3.0000      1.1052 3.2000      1.1019 3.4000      1.1008 B.6000      1.0998 3.8000      1.1001 Ii  hi1f n    f    i                                              it                   .i .v .i
                                                                                          .l Iii .I .i Ii~i         4.0000      1.1036 LI111!! f1 111111L                          fim! w1111 11111111ff ft                             II  4.2000 4.4000 1.1088 1.1132 If    I         if                    4.6000      1.1173
      - 1.20
_FLL ItI I                                                          4.8000       1.1206 III                                                            5.0000       1.1251 6.2000      1.1349 III A II                                                        6.4000      1.1503 6.6000       1.1648 5.800M        1.7804 6.0000       1.1972 6.2000       1.2136
                                                                        -- A                                      6.4000       1.2283 6.6000       1.2416 1.1                                                                                                    6.8MOD        1.2531 7.0000        1.2627 7.2000       1.2703 7.4000       1.2756 fi l l      I I      II I I II I I      1 11  1 11 1                                          7.6000      1.2786
                  -f i l l    II                                                                                7.8000      1.2789 8.0000       1.265 I IL                  11    T I                                                    .2000
                                                                                                                  &4000 1.2714 1.2633 8.6000       1.2515 8.8000       1.2402 1JEfl I                                                                              9.0000       1.2382 JL.O&#xfd; A              =          =      -                                                                  9.2000       1.2378 0              2        3      4      5    6          9 a      9      10                          9.4000        1.2404 DOTT CM                                                                                          TOP    9.6000       1.2392 CORE HEIGHT (PEET)                                                      9.8M00       1.2345 10.0000       1.2381 10.2000       1.23516 10.4000       1.2446 10.6000       1.2503' 10.8000       1.2541 Figure 4                                                  11.0000      1.0000 RAOC Summary of Max W(z) at 150 MWD/MTU                                                      11.2000      1.9000 11.4000      1.0000 with HFP AFD Band of .12/+6 %                                                    11.00        I.D000 11.8000      1.0000 (Top aud Bottom 10% Excluded)                                                  12.0000      1.0000 Unit 1                                                                                                                 Cycle 7 WATTS BAR                                                Page 9 of 18                                            Revision 3
 
COLR for Watts Bar Unit 1, Cycle 7 Height(n) Max W(z).
0.0000        1.0000 1.50            I IIIM~                          .......... .........                                         0.2000 0.4000 1.0000 1.0000 0.6000        1.0000 iiiiiiii          MHM                    MiM                MiMi                  MiM                0.8000        1.0000 1.0000      1.0000 1.2000        1.1439 1.4000      1.1319 1.6000)      1.1182
                                                                                                                      ,.B000      1.1033 2.0000        !.0885 2.200O      1.0732 1.40 2.4000      1.0579 tt!!I!I 11A            2.6000 2.8000 1.0425 1.0331
                                --------------------------------------                                              3.0000 3.2000 3.4000 1.0298 1.0304 1.0344 3.6000      1.0387 3.8000      1.0458 I I IMCUI I I I I I I I I IL                        4.0000      1.0550 1.30 AVIII
                                                  -4441                                          4&#xfd;H  H 4.2000 4,4000 1.0635 1.0725 4.6000      1.0814 III El-I I**1111 11*        ::z~          ,Iu        ii~u            ~       I     4.8000      1.0903 6.0000      1.0OG5 N
                                      'WI                                                                            52000 5.400D 1.1081 1.1258 II I II 111111111111111111111,111
          ..........................                               111111 !!! 111 !!!! II Q
                                                            . ....................
5.6000 5.8000 1.1453 1.1664 6.0000       1.1884 1.20                                    .....         lii 11111 III lii-lii                      --            6.2000 6.4000 1.2104 1.2299 6.6000       1.2475 6.8000      1.2640
                .....   ..... E II                                                                                7.0000       1.2791 7.2000       1.2927
                                                  !!! 1011111 !!!!!! 1!!! 11111113M                                  7.4000 7.6000 1.3051 1.3168
                                                                          . . .      . .  .                        7.8000       1.3241 8.0000       1.3=91 8.2000       1.3316 1.10    111111kI11111111111 Iii11 1111                          Iii111111Jll111111111                        8.4000       1.3316 8.6000       1.3287 8.8000       1.3251 9.0000       1.3284 9.2000        1.3405 11111111      IMI ,I IIIX 11.01 1 I1 I1 I'll,                            I'll, I'll, 1113                9.4000        1.3516 9.6000        1.3631 nt MMMMMIIIIIIIIII    --- - --- - -- --- --                  9.8000 10.0000 1.3775 1.3930 I......     . . . .1 . 1 . 1 . .1 --.,-4.I      10.2000      1.4078 1.00 I (FEET)                                              10.4000       1.421g I
2          4        5                        a        9    10            L CORE HEIGHT DO TOW    dS,                                    b                                                          10.6000       1.4340 10.8000       1.4441 CORE HiEIGHT (FEET)                                                            11.0000       1.000O 11.2000       1.0000 11.4000       1.0000 11.6000       1.0000 11.8000       1.0000 Figure 5                                                      12.0000       1.0000 RAOC Summary of Max W(z) at 3000 MWD/MTU with HFP AFD Band of -124+6 %
(Top and Bottom 10% Excluded)
Unit 1                                                                                                                       Cycle7 WATTS BAR                                                  Page 10 of 18                                                Revision 4      I
 
COLR for Watts Bar Unit 1, Cycle 7 Holght(ft) Max W(z) 0.0000       1.0000 0.2000      1.0000
      .1. U50                                                        0.4000      1.0000 0.6000      1.0000 0.8000      1.0ooo 1.0000      1.0000 12000      1.1664 1.4000      1.1576 1.0000      1.14S7 1.8000      1.1349 2.0000      1.1240 2.2000      1.1125 1.401 2.4000      1.1009 26000        1.0891 2.8000      1.0766 3.0000      1.0716 3.2000      1.073S 3.4000      1.0756 3.6000      1.0773 3.8000      1.0792 4.0000      1.0829 4.2000      1.0881 1.30                                                            4.4000      1.0947 4.6000      1.1006 4.8000      1.1071 6.0000      1.1135 N                                                                    5.2000      1.1215 5.4000      1.1390 5.6000      1.1572 5.8000      1.1743 6.0000      1.1898 6.2000      1.2042 1.20                                                              6.4000      1.2163 6.6000      1.2269 6.8000      1.2356 7.0000      1.2425 7.2M0        1.2485 7.4000      1.2532 7.6000      1.2562 7.8000      1.2573 8.0000       1.2559 8.2000      1.2527 1.o10                                                            8.4000      1.2490 8.6000      1.2468 8.8a00      12478 9.0000       1.2511 9.2000       1.2586 9.4000       1.2634 9.6000      1.2666 9.8000       1.2670 10.0000     1.2667 10.2000       1.2677
: 1.                                                              10.4000       1.26059 BO ooj    2    3                                       11 I
70X 5    6    7  a    9    10          10.6000       1.2636 10.8000       1.2635 CORE HEIGHT      (FEET)                    11.0000       1.0000 112000        1.0oo0 11A000        1.0000 11.000        1.0000 11.8000       1.0000 Figure 6                           12.0000       1.0000 RAOC Summary of Max W(z) at 10000 MWD/MTU with HFP AFD Band of -12/+6 %
(Top and Bottom 10% Excluded)
Unit 1                                                                         Cycle 7 WATTS BAR                              Page 11 of 18                      Revision 4
 
COLR for Watts Bar Unit 1, Cycle 7 Height        14-.
(fst)        W(Z)
O.W000      1.0000 0.2000      1.0000 1I          I0.400O                                1.0000 0.0000      1.0000 0.8000      10000 1.0000      10000) 1.2000      1.4848 1.40M0      1.470M 1.6M00      1.4649 IL8000      1.4371 V4    192.0000                                                          1.4172 2.2000      1.3971 I AJII  12.4000                                 2X332 2.6000       1.3481 2.8000       1.3=18 3.0000       1.2047 3.2000       i.2754 3.4000       1.2617 3.M00        1.2488 I.I000    I31.2=
4.0000       1.2284 A                                                      4.2000        1.2188
            --  ------                                                                  1.060
                        ""4.0000                                                         1,1922 4.8000      1.2783 5.000O        1.1644 5.2000      1.1546 1.20                       A.4wo                                                1.1236 6.6000        1.1541 5.8000      1.2551 0.0000      1.1"i8 6.2000        1.1542 I64000      1.156 6.6000      1.1491 I6.000      1.1441 11    1I7.000              L1392 7.2000      1.1331 7.4000      1.1279 7.6000      1.1215 7.8000      1.1137 8.0000       2.1060 8.2000       1.01 8.4000      1.0866 5.0000       1.0780 2      3    A    5      6      7  8 9  10  11    9.0000       1.08V 9.4000      1.0838 9.6000      1.0877 9.8000      1.0983 10.000        1.11M.
10.200        1.139 10.400        1.1575 10.600        1.1782 10.8w0        1.1957 F          7
                                              -gure                      11.000        1.0000 RAOC Summary of Max W(z) at 16000 M'WDlM J.Oo                11.4%) 1140  1.0o000 with EHFP AFD Band of -12410 %                      11MGM)        1.0000 11.800        1.0000 (Top and Bottom 10% Excluded)                        sz00o        1.OOO Unit I                                                                        Cycle 7 WATTS BAR                                                                Revision 5 LA 01 15
 
COLR for Watts Bar Unit 1, Cycle 7 Table A.1 FJW(Z) Penalty Factor Core          FQW(Z)
Burnup          Penalty (MWNDrt            Factor All burnups        1.0200 Note:
: 1. The Penalty Factor, which is applied to Fw(Z) for compliance with Surveillance Requirement 3.2.1.2.a, Is the maximum factor by which FW(Z) is expected to increase per 31 Effective Full Power Days (EFPD) starting from the burnup at which the FQw(Z) was determined.
Unit 1                                                                         Cycle 7 WATTS BAR                                Page 13 of 18                      Revision 1
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band    ABank BBank CBank  DBank          Band    A Bank B Bank C Bank  D Bank Overlap                                    Overlap Counter                                    Counter (steps)                                    (steps) 0      0                                  72      72 2      2                                  74      74 4      4                                  76      76 6       6                                 78      78 8      8                                 80      80 10      10                                82      82 12      12                                84      84 14      14                                86      86 16      16                                88      88 18      18                                90      90 20      20                                92      92 22      22                                94      94 24      24                                96      96 26      26                                98      98 28      28                                100    100 30      30                                102    102 32      32                                104    104 34      34                                106    106 36      36                                108    108 38      38                                110    110 40      40                                112    112 42      42                                114    114 44      44                                116    116 46      46                                118      l18 48      48                                120    120 50      50                                122    122 52      52                                124    124 54      54                                126    126 56      56                                128    128    0 58      58                                130    130    2 60      60                                132    132    4 62      62                                134    134    6 64      64                                136    136    8 66      66                                138    138    10 68      68                                140    140    12 70      70                                142    142    14 Unit 1                                                                 Cycle 7 WATTS BAR                       Page 14 of 18                      Revision I
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band    A Bank B Bank C Bank D Bank          Band    A Bank B Bank C Bank  D Bank Overlap                                      Overlap Counter                                      Counter (steps)                                     (steps) 144    144    16                            220    220    92 9
146    146    18                            222    222    94 148    148    20                            224    224    96 150    150    22                            226    226    98 152    152    24                            228    228    100 154    154    26                            230    230    102 156    156    28                            232    232    104 158    158    30                            234            106 160    160    32                            236            108 162    162    34                            238            110 164    164    36                            240            112 166    166    38                            242            114 168    168    40                            244            116 170    170    42                            246            118 172    172    44                            248            120 174    174    46                            250            122 176    176    48                            252            124 178    178    50                            254            126 180    180    52                            256            128    0 182    182    54                            258            130    2 184    184    56                            260            132    4 186    186    58                            262            134    6 188    188    60                            264            136    8 190    190    62                            266            138    10 192    192    64                            2G8            140    12 194    194    66                            270            142    14 196    196    68                            272            144    16 198    198    70                            274            146    18 200    200    72                            276            148    20 202    202    74                            278            150    22 204    204    76                            280            152    24 206    206    78                            282            154    26 208    208    80                            284            156    28 210    210    82                            286            158    30 212    212    84                            288            160    32 214    214    86                            290            162    34 216    216    88                            292            164    36 218    218    90                            294            166    38 Unit 1                                                                    Cycle 7 WATTS BAR                          Page 15 of 18                      Revision 1
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band    A Bank B Bank C Bank D Bank         Band    ABank BBank CBank    DBank Overlap                                       Overlap Counter                                      Counter (steps)                                       (steps) 296            168    40                      370                114 298            170    42                      372                116 300            172    44                      374                118 302            174    46                      376                120 304            176    48                      378                122 306            178    50                      380                124 308            180    52                      382                126 310            182    54                      384                128     0 312            184    56                      386                130     2 314            186    58                      388                132     4 316            188    60                      390                134     6 318            190    62                      392                136     B 320            192    64                      394                138     10 322            194    66                      396                140     12 324            196    68                      398                142     14 326            198    70                      400                144     16 328            200    72                      402                146     18 330            202    74                      404                148     20 332            204    76                      406                150     22 334            206    78                      408                152     24 336            208    80                      410                154     26 338            210    82                      412                156     28 340            212    84                      414                158     30 342            214    86                      416                160     32 344            216    88                      418                162     34 346            218    90                      420                164     36 348            220    92                      422                166     38 350            222    94                      424                168     40 352            224    96                      426                170     42 354            226    98                      428                172     44 356            228    100          '        430                174     46 358            230    102                    432                176     48 360            232    104                    434                178     50 362                  106                    436                180     52 364                  108                    438                182     54 366                  110                    440                184     56 368                  112                    442                186     58 Unit 1                                                                  Cycle 7 WATTS BAR                          Page 16 of 18                    Revision I
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band   A Bank BBank C Bank D Bank         Band    ABank BBank CBank  DBank Overlap                                     Overlap Counter                                    Counter (steps)                                     (steps) 444                  188    60              518                        134 446                  190    62              520                        136 448                  192    64              522                        138 450                  194    66              524                        140 452                  196    68              526                        142 454                  198    70              528                        144 456                  200    72              530                        146 458                  202    74              532                        148 460                  204    76              534                        150 462                  206    78              536                        152 464                  208    80              538                        154 466                  210    82              540                        156 468                  212    84              542                        158 470                  214    86              544                        160 472                  216    88              546                        162 474                  218    90              548                        164 476                  220    92              550                        166 478                  222    94              552                        168 480                  224    96              554                        170 482                  226    98              556                        172 484                  228    100            558                        174 486                  230    102            560                        176 488                  232    104            562                        178 490                        106            564                        180 492                        108            566                        182 494                        110            568                        184 496                        112            570                        186 498                        114            572                        188 500                        116            574                        190 502                        118            576                        192 504                        120            578                        194 506                        122            580                        196 508                        124            582                        198 510                        126            584                        200 512                        128            586                        202 514                        130            588                        204 516                        132            590                        206 Unit I                                                                Cycle 7 WATTS BAR                        Page 17 of 18                    Revision 1
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band    ABank    BBank    CBank DBank Overlap Counter (steps) 592                              208 594                              210 596                              212 598                              214 600                              216 602                              218 604                              220 606                              222 608                              224 610                              226 612                              228 614                              230 616                              232 This information is provided in 2 step increments. One step increments can be derived by interpolation. Fully withdrawn region shall be the condition where shutdown and control banks are at a position within the interval of Z_225 and *231 steps withdrawn. The Table indicates a maximum step of 232 to be consistent with Z step increments.
Unit 1                                                                   Cycle 7 WATTS B3AR                           Page 18 of 18                   Revision 1}}

Revision as of 17:42, 23 November 2019

Core Operating Limits Report for Cycle 7, Revision 6
ML061840476
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 06/29/2006
From: Pace P
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML061840476 (21)
v • d • e


Text

{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 'JUN 2 9 200 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Gentlemen: In the Matter of the ) Docket No. 50-390 Tennessee Valley Authority ) WATTS BAR NUCLEAR PLANT (WBN) UNIT I - CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 7, REVISION 5 The purpose of this letter is to provide Revision 5 of the Cycle 7 COLR in accordance with WBN Technical Specification 5.9.5.d. Revision 5 revises the axial flux difference (AFD) limit and the W(z) values. This revision was effective as of June 28, 2006. There are no regulatory commitments associated with this submittal. If you have any questions concerning this letter, please contact me at (423) 365-1824. Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs

Enclosure:

Watts Bar Nuclear Plant Unit 1, Cycle 7 Core Operating Limits Report, Revision 5 cc: See Page 2 Printed on recycled paper

U.S. Nuclear Regulatory Commission Page 2 JUN 2.9 2006 Enclosure cc (Enclosure): NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Douglas V. Pickett, Senior Project Manager U.S. Nuclear Regulatory Commission MS 08G9a One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303

Enclosure Watts Bar Nuclear Plant Unit I Cycle 7 Core Operating Limits Report, Revision 5

I COLR for Watts Bar Unit 1, Cycle 7 QA Record L36 060627 802 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 7 CORE OPERATING LIMITS REPORT Revision 5 June 2006 Prepared by: am .VIeA0" 1 1760 Nuclear Fuel Date Verified by-. J 

                                                                      /, ,(,-"/0-8/0 Nuclear Fuel                                                   Date Reviewed by:              L______

Manager, Nucl Fuel Des Date Reactor Engineeri gr pervisor Date Approved by*~ PORC Chairman / Date Plant Manager Date Date of PORC PORC Meeting Affected Revision Approval Number Pages Reason for Revision 0 3/111/05 4073 All Initial issue 1 3/18/05 4075 All Revised to remove cycle 7 1 1_ restriction to mode 6 2 5/31/05 4089 1, 9- 12 Revised maximum W(z) values 3 9/19/05 4107 1, 9- 12 Revised maximum W(z) values 4 3/13/06 4127 1, 10- 12 Revised maximum W(z) values 5 1,4 .. 1,4,8,.12 Revised AFD Limit and W(z) Unit 1 Cycle 7 WATTS BAR Page I of 18 Revision 5

COLR for Watts Bar Unit 1, Cycle 7 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 7 has been prepared In accordance with the requirements of the Technical Specifications 5.9.5. The Technical Specifications affected by this report are listed below: 3.1.4 Moderator Temperature Coefficient (MTC) 3.1.6 Shutdown Bank Insertion Limits 3.1.7 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor (F0 (Z)) 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FAH) 3.2.3 Axial Flux Difference (AFD) 3.5.1 Accumulators 3.5.4 Refueling Water Storage Tank (RWST) 3.9.1 Boron Concentration 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 the Technical Specifications Section 5.9.5. The following abbreviations are used in this section: BOL -- Beginning of Cycle Life ARO -- All Rods Out HZP - Hot Zero Thermal Power EOL -- End of Cycle Life RTP Rated Thermal Power Unit I Cycle 7 WATTS BAR Page 2 of 18 Revision I

COLR for Watts Bar Unit 1, Cycle 7 Z.1 MODERATOR TEMPERATURE COEFFICIENT - MTC (LCO 3.1.4) 2.1.1 The MTC limits are: The BOLJAROIHZP - MTC shall be less positive than or equal to 0 Ak/kPF (upper limit). With the measured BOLIAROIHZP - MTC more positive than 

                -0.80 x 10" Ak/kJ0F (as-measured MTC limit), establish control rod withdrawal limits to ensure the MTC remains less positive than or equal to 0 Ak/k/*F (upper limit) for all times in core life.

The EOLUAROIRTP - MTC shall be less negative than or equal to 

                -4.5 x 10' Ak/k/*F (lower limit).

2.1.2 The 300 ppm surveillance limit is: The measured 300 ppm IAROIRTP-MTC should be less negative than or equal to 

                -3.75 x 10 Ak/k10 F.

2.1.3 The 60 ppm surveillance limit is: The measured 60 ppm /ARO/RTP-MTC should be less negative than or equal to 

                -4.28 x 10' Ak/kPF.

2.2 SHUTDOWN BANK INSERTION LIMITS (LCO 3.1.6) 2.2.1 The shutdown banks shall be withdrawn to a position greater than or equal to 225 steps withdrawn. 2.3 CONTROL BANK INSERTION LIMITS (LCO 3.1.7) 2.3.1 The control banks shall be limited In physical insertion as shown in Figure 1. 2.3.2 Table 1 shows the control rod overlap positions. Unit I Cycle 7 WATTS BAR Page 3 of 18 Revision 1

I COLR for Watts Bar Unit 1, Cycle 7 2.4 HEAT FLUX HOT CHANNEL FACTOR - FQ(Z) (LCO 3.2.1) Fo(Z)*([CFQ / PI *K(Z) for P > 0.5 fO(Z) < [CFQ/0.51

  • K(Z) for P <0.5 Where P Thermal Power /Rated Thrnmal Power 2.4.1 CFQ m2.50 2.4.2 K(Z) is provided in Figure 2.

2.4.3 FQc(Z) =FoM(Z) 1.0815 where: FQ"(Z) iFthe measured value of Fq(Z) obtained fiom incore flux map results and 1.0815 is a factor that accounts for fuel manufacturing tolerances and flux map measurement uncertainty. 2.4.4 Fiw(Z) - Fr'(Z)

  • W(Z) where: W(Z) values are provided in Figures 4 through 7, only use W(7) values provided in Figure 7 for buraups greater than 16,000 MWD/MTU. The Figures providc sufficicnt information to determine W(Z) versus core height for all cycle burnups.

I 2.4.5 F*w(Z) Penalty Factor The F,)'(ZVi penalty factor is providcd iu Table A.]. Unit I Cycle 7 WATTS BAR Page 4 of 18 Revision/. , 

                                                                                          /1.762 0/0(0

COLR for Watts Bar Unit 1, Cycle 7 2.5 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR - FaN (LCO 3.2.2) FA< FA*K* ( 1 + PF * (l-P)) where P = Thermal Power / Rated Thermal Power FAHrp = 1.65 for RFA-2 fuel, and Farp = 1.62 for VANTAGE+/PERFORMANCE+ fuel PF = 0.3 2.6 AXIAL FLUX DIFFERENCE - AFD (LCO 3.2.3) 2.6.1 The AFD limits for Cycle 7 are provided in Figure 3. 2.7 REFUELING BORON CONCENTRATION (LCO 3.9.1) 2.7.1 The refueling boron concentration shall be > 2000 ppm. 2.8 ACCUMULATORS (LCO 3.5.1) 2.8.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7. 2.9 REFUELING WATER STORAGE TANK - RWST (LCO 3.5.4) 2.9.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7. Unit 1 Cycle 7 WATTS BAR Page 5 of 18 Revision 1

I COLR for Watts Bar Unit 1, Cycle 7 250 I I I I I II I I I I I t III'' f! II'! If (0.832,231) I II 231 Rk(0074.231)11 I I V 1' I I I I I I I I I I I I 225 (0.048,225 i i i i P i 

                                        ..  ..   .  .......        ...     .! . . L-5  (0.606.225)H IH(o.i 200               jLtNK=Bj
                                 =,                                                --------------

111111 11il l lll l 0 l l111111111. I(1.0,187) 1 175 7-r* wI 1 111111111 lix I

!I=! I !!! 1 1 11 11 1 1 111 171 1 1 1 150 1111 ill IJA I'IrIMTKýJjjj ix i i i i I 0 1111 1 !!! 171 !!! 11 11111-!-! 11 !!! 11 1 V1 111 1 i 11-1 0I 125 I I II= I I II II I
                                                                                                                           =1 0.

x in HI I HI iI i~ I I ! H~ i i W I IiHI M H IIII  !:::dIIII 141 1 11f 11 1 1f 1f 111f 1f 11 11 EANK B I 11 11 F 11 +/-IllH ill+1 14 ,q I 75 1 1 1 MM11-1-r-11 MIM  !?-!!!Ill 111 11111111 Ill 1 11 1111 !111 111 111V111111111 lill M 1 111 11] 50 Mi  !! 1 1 1 2 1 1 1 1 11 1 111- - - - 25 1 11 !111 111 1 IPI 11 111 1Q L4 111 F I [[ III IIIII 1 1 1 1 1 --- 0 Jill ! ii 0 0.20 0.40 0.60 . 0.80 1.00 FRACTION OF RATED THERMAL POWER Figure 1 Control Bank Insertion Limits Versus Thermal Power Four Loop Operation

  • Fully withdrawn region shall be the condition where shutdown and control banks are at a position within the interval ofŽ 225 and
  • 231 steps withdrawn.

Unit 1 Cycle 7 WATTS BAR Page 6 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 7 1.2 1.1 1.0 0.9 0.8 CD 0 0.7 10 More Ho-gh- - -_ 0.6 0.000 1.000 CD 6.000 1.000 

      .NJ                                                0 12.00      0.9256 0.5 0

z 0.4 0.3 0.2 0.1 0 0 2 4 6 8 10 12 Core Height (feet) Figure 2 K(Z) - Normalized FQ(Z) as a Function of Core Height Unit 1 Cycle 7 WATTS BAR Page 7 of 18 Revision I

I COLR for Watts Bar Unit 1, Cycle 7 Z. e 40 -30 -20 -10 0 10 20 30 40 50 Flux Diftemmce (,& % Figure3a Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC) Unit 1 WA7TS BAR 8 of 18 Caiycl

COLR for Watts Bar Unit 1, Cycle 7 HeIght Max. W(z) 0.0000 1.0000 1-40 ý tj II II II I 0.200 1.0000 0.4000 1.0000 0.6000 1.0000 fill 0.8000 LOOOO fill II I III fil l I I I if I 1.0000 1.0000 1.20XX 1.2512 III IF fill I I __T II 1.4000 1.6000 1.2321 I I F-I 1.2157 1.8000 1.1081 2.0000 1.1793 2.2000 1.1605 L-H I I II I 2.4000 1.1410 1111 1 111 1 1 TF 2.6000 1.1210 fil l I III I I I 2.8000 1.1104 LLU. 1: a 3.0000 1.1052 3.2000 1.1019 3.4000 1.1008 B.6000 1.0998 3.8000 1.1001 Ii hi1f n f i it .i .v .i 

                                                                                         .l Iii .I .i Ii~i         4.0000       1.1036 LI111!! f1 111111L                           fim! w1111 11111111ff ft                             II   4.2000 4.4000 1.1088 1.1132 If    I          if                     4.6000       1.1173
     - 1.20

_FLL ItI I 4.8000 1.1206 III 5.0000 1.1251 6.2000 1.1349 III A II 6.4000 1.1503 6.6000 1.1648 5.800M 1.7804 6.0000 1.1972 6.2000 1.2136 

                                                                        -- A                                      6.4000        1.2283 6.6000       1.2416 1.1                                                                                                     6.8MOD        1.2531 7.0000        1.2627 7.2000       1.2703 7.4000       1.2756 fi l l      I I       II I I II I I      1 11  1 11 1                                          7.6000       1.2786
                  -f i l l     II                                                                                 7.8000       1.2789 8.0000       1.265 I IL                   11    T I                                                     .2000
                                                                                                                  &4000 1.2714 1.2633 8.6000       1.2515 8.8000       1.2402 1JEfl I                                                                               9.0000       1.2382 JL.Oý A              =          =      -                                                                   9.2000       1.2378 0              2        3      4       5     6           9 a       9       10                          9.4000        1.2404 DOTT CM                                                                                           TOP    9.6000        1.2392 CORE HEIGHT (PEET)                                                       9.8M00       1.2345 10.0000       1.2381 10.2000       1.23516 10.4000       1.2446 10.6000       1.2503' 10.8000       1.2541 Figure 4                                                   11.0000       1.0000 RAOC Summary of Max W(z) at 150 MWD/MTU                                                      11.2000       1.9000 11.4000       1.0000 with HFP AFD Band of .12/+6 %                                                    11.00         I.D000 11.8000       1.0000 (Top aud Bottom 10% Excluded)                                                   12.0000       1.0000 Unit 1                                                                                                                  Cycle 7 WATTS BAR                                                 Page 9 of 18                                            Revision 3

COLR for Watts Bar Unit 1, Cycle 7 Height(n) Max W(z). 0.0000 1.0000 1.50 I IIIM~ .......... ......... 0.2000 0.4000 1.0000 1.0000 0.6000 1.0000 iiiiiiii MHM MiM MiMi MiM 0.8000 1.0000 1.0000 1.0000 1.2000 1.1439 1.4000 1.1319 1.6000) 1.1182 

                                                                                                                     ,.B000       1.1033 2.0000        !.0885 2.200O       1.0732 1.40 2.4000       1.0579 tt!!I!I 11A             2.6000 2.8000 1.0425 1.0331
                                --------------------------------------                                               3.0000 3.2000 3.4000 1.0298 1.0304 1.0344 3.6000       1.0387 3.8000       1.0458 I I IMCUI I I I I I I I I IL                         4.0000       1.0550 1.30 AVIII
                                                 -4441                                          4ýH  H 4.2000 4,4000 1.0635 1.0725 4.6000       1.0814 III El-I I**1111 11*        ::z~          ,Iu        ii~u            ~        I     4.8000       1.0903 6.0000       1.0OG5 N
                                     'WI                                                                             52000 5.400D 1.1081 1.1258 II I II 111111111111111111111,111
          ..........................                               111111 !!! 111 !!!! II Q
                                                            . ....................

5.6000 5.8000 1.1453 1.1664 6.0000 1.1884 1.20 ..... lii 11111 III lii-lii -- 6.2000 6.4000 1.2104 1.2299 6.6000 1.2475 6.8000 1.2640 

               .....    ..... E II                                                                                 7.0000       1.2791 7.2000       1.2927
                                                 !!! 1011111 !!!!!! 1!!! 11111113M                                   7.4000 7.6000 1.3051 1.3168
                                                                          . . .      . .   .                         7.8000       1.3241 8.0000        1.3=91 8.2000       1.3316 1.10     111111kI11111111111 Iii11 1111                           Iii111111Jll111111111                         8.4000        1.3316 8.6000        1.3287 8.8000        1.3251 9.0000        1.3284 9.2000        1.3405 11111111      IMI ,I IIIX 11.01 1 I1 I1 I'll,                             I'll, I'll, 1113                9.4000        1.3516 9.6000        1.3631 nt MMMMMIIIIIIIIII    --- - --- - -- --- --                  9.8000 10.0000 1.3775 1.3930 I......      . . . .1 . 1 . 1 .  .1 --.,-4.I      10.2000       1.4078 1.00 I (FEET)                                               10.4000       1.421g I

2 4 5 a 9 10 L CORE HEIGHT DO TOW dS, b 10.6000 1.4340 10.8000 1.4441 CORE HiEIGHT (FEET) 11.0000 1.000O 11.2000 1.0000 11.4000 1.0000 11.6000 1.0000 11.8000 1.0000 Figure 5 12.0000 1.0000 RAOC Summary of Max W(z) at 3000 MWD/MTU with HFP AFD Band of -124+6 % (Top and Bottom 10% Excluded) Unit 1 Cycle7 WATTS BAR Page 10 of 18 Revision 4 I

COLR for Watts Bar Unit 1, Cycle 7 Holght(ft) Max W(z) 0.0000 1.0000 0.2000 1.0000 

     .1. U50                                                         0.4000       1.0000 0.6000       1.0000 0.8000      1.0ooo 1.0000      1.0000 12000       1.1664 1.4000      1.1576 1.0000      1.14S7 1.8000      1.1349 2.0000      1.1240 2.2000      1.1125 1.401 2.4000      1.1009 26000        1.0891 2.8000       1.0766 3.0000      1.0716 3.2000       1.073S 3.4000       1.0756 3.6000       1.0773 3.8000       1.0792 4.0000       1.0829 4.2000       1.0881 1.30                                                             4.4000       1.0947 4.6000       1.1006 4.8000       1.1071 6.0000       1.1135 N                                                                     5.2000       1.1215 5.4000       1.1390 5.6000       1.1572 5.8000       1.1743 6.0000       1.1898 6.2000       1.2042 1.20                                                              6.4000       1.2163 6.6000       1.2269 6.8000       1.2356 7.0000       1.2425 7.2M0        1.2485 7.4000       1.2532 7.6000       1.2562 7.8000       1.2573 8.0000       1.2559 8.2000       1.2527 1.o10                                                             8.4000       1.2490 8.6000       1.2468 8.8a00       12478 9.0000       1.2511 9.2000       1.2586 9.4000       1.2634 9.6000       1.2666 9.8000       1.2670 10.0000      1.2667 10.2000       1.2677
1. 10.4000 1.26059 BO ooj 2 3 11 I

70X 5 6 7 a 9 10 10.6000 1.2636 10.8000 1.2635 CORE HEIGHT (FEET) 11.0000 1.0000 112000 1.0oo0 11A000 1.0000 11.000 1.0000 11.8000 1.0000 Figure 6 12.0000 1.0000 RAOC Summary of Max W(z) at 10000 MWD/MTU with HFP AFD Band of -12/+6 % (Top and Bottom 10% Excluded) Unit 1 Cycle 7 WATTS BAR Page 11 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 7 Height 14-. (fst) W(Z) O.W000 1.0000 0.2000 1.0000 1I I0.400O 1.0000 0.0000 1.0000 0.8000 10000 1.0000 10000) 1.2000 1.4848 1.40M0 1.470M 1.6M00 1.4649 IL8000 1.4371 V4 192.0000 1.4172 2.2000 1.3971 I AJII 12.4000 2X332 2.6000 1.3481 2.8000 1.3=18 3.0000 1.2047 3.2000 i.2754 3.4000 1.2617 3.M00 1.2488 I.I000 I31.2= 4.0000 1.2284 A 4.2000 1.2188 

           --   ------                                                                  1.060
                       ""4.0000                                                         1,1922 4.8000       1.2783 5.000O        1.1644 5.2000       1.1546 1.20                        A.4wo                                                 1.1236 6.6000        1.1541 5.8000       1.2551 0.0000       1.1"i8 6.2000        1.1542 I64000       1.156 6.6000       1.1491 I6.000       1.1441 11    1I7.000               L1392 7.2000       1.1331 7.4000       1.1279 7.6000       1.1215 7.8000       1.1137 8.0000       2.1060 8.2000       1.01 8.4000       1.0866 5.0000       1.0780 2      3    A     5       6      7  8 9   10   11     9.0000       1.08V 9.4000       1.0838 9.6000       1.0877 9.8000       1.0983 10.000        1.11M.

10.200 1.139 10.400 1.1575 10.600 1.1782 10.8w0 1.1957 F 7 

                                              -gure                      11.000        1.0000 RAOC Summary of Max W(z) at 16000 M'WDlM J.Oo                 11.4%) 1140   1.0o000 with EHFP AFD Band of -12410 %                       11MGM)        1.0000 11.800        1.0000 (Top and Bottom 10% Excluded)                        sz00o         1.OOO Unit I                                                                         Cycle 7 WATTS BAR                                                                 Revision 5 LA 01 15

COLR for Watts Bar Unit 1, Cycle 7 Table A.1 FJW(Z) Penalty Factor Core FQW(Z) Burnup Penalty (MWNDrt Factor All burnups 1.0200 Note:

1. The Penalty Factor, which is applied to Fw(Z) for compliance with Surveillance Requirement 3.2.1.2.a, Is the maximum factor by which FW(Z) is expected to increase per 31 Effective Full Power Days (EFPD) starting from the burnup at which the FQw(Z) was determined.

Unit 1 Cycle 7 WATTS BAR Page 13 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band ABank BBank CBank DBank Band A Bank B Bank C Bank D Bank Overlap Overlap Counter Counter (steps) (steps) 0 0 72 72 2 2 74 74 4 4 76 76 6 6 78 78 8 8 80 80 10 10 82 82 12 12 84 84 14 14 86 86 16 16 88 88 18 18 90 90 20 20 92 92 22 22 94 94 24 24 96 96 26 26 98 98 28 28 100 100 30 30 102 102 32 32 104 104 34 34 106 106 36 36 108 108 38 38 110 110 40 40 112 112 42 42 114 114 44 44 116 116 46 46 118 l18 48 48 120 120 50 50 122 122 52 52 124 124 54 54 126 126 56 56 128 128 0 58 58 130 130 2 60 60 132 132 4 62 62 134 134 6 64 64 136 136 8 66 66 138 138 10 68 68 140 140 12 70 70 142 142 14 Unit 1 Cycle 7 WATTS BAR Page 14 of 18 Revision I

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Band A Bank B Bank C Bank D Bank Overlap Overlap Counter Counter (steps) (steps) 144 144 16 220 220 92 9 146 146 18 222 222 94 148 148 20 224 224 96 150 150 22 226 226 98 152 152 24 228 228 100 154 154 26 230 230 102 156 156 28 232 232 104 158 158 30 234 106 160 160 32 236 108 162 162 34 238 110 164 164 36 240 112 166 166 38 242 114 168 168 40 244 116 170 170 42 246 118 172 172 44 248 120 174 174 46 250 122 176 176 48 252 124 178 178 50 254 126 180 180 52 256 128 0 182 182 54 258 130 2 184 184 56 260 132 4 186 186 58 262 134 6 188 188 60 264 136 8 190 190 62 266 138 10 192 192 64 2G8 140 12 194 194 66 270 142 14 196 196 68 272 144 16 198 198 70 274 146 18 200 200 72 276 148 20 202 202 74 278 150 22 204 204 76 280 152 24 206 206 78 282 154 26 208 208 80 284 156 28 210 210 82 286 158 30 212 212 84 288 160 32 214 214 86 290 162 34 216 216 88 292 164 36 218 218 90 294 166 38 Unit 1 Cycle 7 WATTS BAR Page 15 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Band ABank BBank CBank DBank Overlap Overlap Counter Counter (steps) (steps) 296 168 40 370 114 298 170 42 372 116 300 172 44 374 118 302 174 46 376 120 304 176 48 378 122 306 178 50 380 124 308 180 52 382 126 310 182 54 384 128 0 312 184 56 386 130 2 314 186 58 388 132 4 316 188 60 390 134 6 318 190 62 392 136 B 320 192 64 394 138 10 322 194 66 396 140 12 324 196 68 398 142 14 326 198 70 400 144 16 328 200 72 402 146 18 330 202 74 404 148 20 332 204 76 406 150 22 334 206 78 408 152 24 336 208 80 410 154 26 338 210 82 412 156 28 340 212 84 414 158 30 342 214 86 416 160 32 344 216 88 418 162 34 346 218 90 420 164 36 348 220 92 422 166 38 350 222 94 424 168 40 352 224 96 426 170 42 354 226 98 428 172 44 356 228 100 ' 430 174 46 358 230 102 432 176 48 360 232 104 434 178 50 362 106 436 180 52 364 108 438 182 54 366 110 440 184 56 368 112 442 186 58 Unit 1 Cycle 7 WATTS BAR Page 16 of 18 Revision I

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank BBank C Bank D Bank Band ABank BBank CBank DBank Overlap Overlap Counter Counter (steps) (steps) 444 188 60 518 134 446 190 62 520 136 448 192 64 522 138 450 194 66 524 140 452 196 68 526 142 454 198 70 528 144 456 200 72 530 146 458 202 74 532 148 460 204 76 534 150 462 206 78 536 152 464 208 80 538 154 466 210 82 540 156 468 212 84 542 158 470 214 86 544 160 472 216 88 546 162 474 218 90 548 164 476 220 92 550 166 478 222 94 552 168 480 224 96 554 170 482 226 98 556 172 484 228 100 558 174 486 230 102 560 176 488 232 104 562 178 490 106 564 180 492 108 566 182 494 110 568 184 496 112 570 186 498 114 572 188 500 116 574 190 502 118 576 192 504 120 578 194 506 122 580 196 508 124 582 198 510 126 584 200 512 128 586 202 514 130 588 204 516 132 590 206 Unit I Cycle 7 WATTS BAR Page 17 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band ABank BBank CBank DBank Overlap Counter (steps) 592 208 594 210 596 212 598 214 600 216 602 218 604 220 606 222 608 224 610 226 612 228 614 230 616 232 This information is provided in 2 step increments. One step increments can be derived by interpolation. Fully withdrawn region shall be the condition where shutdown and control banks are at a position within the interval of Z_225 and *231 steps withdrawn. The Table indicates a maximum step of 232 to be consistent with Z step increments. Unit 1 Cycle 7 WATTS B3AR Page 18 of 18 Revision 1}}

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