ML033030408

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Core Operating Limits Report for Cycle 6, Revisions 3 & 4
ML033030408
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 10/27/2003
From: Pace P
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML033030408 (39)
v • d • e


Text

N Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 OCT 2 7 2003 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Gentlemen:

In the Matter of ) Docket No.50-390 Tennessee Valley Authority WATTS BAR NUCLEAR PLANT (WBN) UNIT 1- CORE OPERATING LIMITS REPORT FOR CYCLE 6, REVISIONS 3 AND 4 The purpose of this letter is to provide the Cycle 6 Core Operating Limits Report (COLR) in accordance with WBN Technical Specification 59.5.d. Enclosed are Revisions 3 and 4 of the COLR. Revision 3, which was effective on September 29, 2003, was limited to Modes 6 and 5 of the Cycle 5 Refueling Outage in order to permit core load and reactor assembly to proceed in advance of NRC's approval of the License Amendment Requests for Robust Fuel Assemblies and Boron Concentration Reductions in the refueling water storage tank and the cold leg accumulators. Revision 4 of the COLR was effective October 13, 2003, and removed the restrictions identified in Revision 3 following NRC's approval of the above License Amendment Requests in Amendments 46 and 48, respectively.

Pned on ced paw

U.S. Nuclear Regulatory Commission Page 2 OCT 2 7 2003 If you have any questions about these reports, please contact me at (423) 365-1824.

Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs Enclosures Core Operating Limits Report, Unit 1 Cycle 6, Revision 3 Core Operating Limits Report, Unit 1 Cycle 6, Revision 4 cc (Enclosures):

NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Ms. Margaret H. Chernoff, Project Manager U.S. Nuclear Regulatory Commission MS 08G9 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

U.S. Nuclear Regulatory Commission Page 3 OCT 2 7 2003 PLP:RNM Enclosures cc (Enclosures):

C. E. Ayers, WR 3W-C L. S. Bryant, MOB 2R-WBN M. J. Burzynski, BR 4X-C M. H. Dunn, ET 1OA-K M. J. Fecht, LP 6A-C P. W. Harris, ADM lV-WBN J. C. Kammeyer, EQB A-WBN G. J. Laughlin, EQB A-WBN J. E. Maddox, LP 6A-C NSRB Support, LP 5M-C L. V. Parscale, ADM B-WBN J. A. Scalice, LP 6A-C K. W. Singer, LP 6A-C J. E. Semelsberger, EQB 2W-WBN J. A. West, MOB 2R-WBN Sequoyah Licensing Files, OPS 4C-SQN EDMS, WT 3B-K S:\SHARED\LROUSE\SUBMIT\COLR CYCLE 6.doc

L36 031009 805 QA Record WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 6 CORE OPERATING LIMITS REPORT October 2003 Prepared:

Nuclear Vuel Date Reviewed:

&&~'i/&zs A4~ -Sr: I / 3 Reactor Engineering Supervisor / Date Approve Opfayations Manager Date

_______________________________/' /0/o/

PORC Chairman Date Date of PORC PORC Meeting Affected Revision Approval Number Pages Reason for Revision 0 n/a n/a All Initial issue 1 n n/a n/a All Early shutdown of cycle 5 2 n/a n/a 1 and 9 Add missing data to Figure 4 3 9/26/03 3989 1,3-4,13-18 consistency with TS I__ ___ _ _ _ I_

__ _ I__

nomenclature 4 20/z7/Q3All Redesign due to damage to

'ii 4 3

_ _ _ _ _ _ assem bly G20

_ _ _ _ _ _ _ _ _ _ _ I__

Unit 1 Cycle 6 WATTS BAR Page 1 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 6 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 Temp:erature Coefficient (MTC) 3.1.6 Shutdown Bank Insertion Limits 3.1.7 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor (FQ(Z))

3.2.2 Nuclear Enthalpy Rise Hot .Channel Factor (FtH")

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 1 Cycle 6 WAITS BAR Page 2 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 2.1 MODERATOR TEMPERATURE COEFFICIENT - MTC (LCO 3.1.4) 2.1.1 The MTC limits are:

The BOLUAROIHZP - MTC shall be less positive than or equal to 0 AkJk/0 F (upper limit). With the measured BOLJARO/HZP - MTC more positive than

-0.70 x 10` Ak/k/ 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 EOLIARO/RTP - MTC shall be less negative than or equal to

-4.5 x 0 Ak/k/0 F (lower limit).

2.1.2 The 300 ppm surveillance limit is:

The measured 300 ppm ARO/RTP-MTC should be less negative than or equal to

-3.75 x 10' AWk/k/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 104 Ak/k/F.

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 I shows the control rod overlap positions.

Unit 1 Cycle 6 WATTS BAR Page 3 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 2.4 HEAT FLUX HOT CHANNEL FACTOR - F,(Z) (LCO 3.2.1)

FQ(Z) * [CFQ/ P] K(Z) for P > 0.5 F0 (Z) * [CFQ/ 0.5]

  • K(Z) for P
  • 0.5 Where P = Thermal Power Rated Thermal Power 2.4.1 CFQ = 2.50 2.4.2 K(Z) is provided in Figure 2.

2.4.3 FC(Z) = FQm(Z)

  • 1.0815 where: FQM(Z) is the measured value of FQ(Z) obtained from incore flux map results and 1.0815 is a factor that accounts for fuel manufacturing tolerances and flux map measurement uncertainty.

2.4.4 FQW(Z) = FQC(Z)

  • W(Z) where: W(Z) values are provided in Figures 4 through 7. The figures I provide sufficient information to determine W(Z) versus core height for all cycle burnups.

2.4.5 FQW(Z) Penalty Factor The FQW(Z) penalty factor is provided In Table A. 1.

Unit 1 Cycle 6 WATTS BAR Page 4 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 2.5 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR - FsHN (LCO 3.2.2)

FH F* (1 + PF ( P))

where P = Thermal Power Rated Thermal Power FAHRTP = 1.65 for RFA-2 fuel, and FwH = 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 6 are provided in Figure 3.

2.7 REFUELING BORON CONCENTRATION (LCO 3.9.1) 2.7.1 The refueling boron concentration shall be 2 2103 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 6.

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 6.

Unit 1 Cycle 6 WATTS BAR Page 5 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign I50 _ . . _ . . . _ . . . _ . . .

I IIII I I III I I I~l I I I I11 I II I I II

_ jl~~~I I I Tl I EI3:= 1 4(0.632, 231)J

__II. ILl 1. 11I1 T. i 231 225 ,g I I I I I I

-~~~~~~~~~~~~J

. l ll m I_ I ....

I I I I .I -- -

_ Z F T g 4 ,0.6060225)lF T~~~~~~~~~00

_lill 200

_I III Lli ll lT I 1 II l I l _I Ll I T~~~~~~~~~~~~~~~~~

_ hIZ &I _I~~~~~~~~~~0 175 lTHA+WET3A 3f X;+11eB~~~~~~~~~~~~~~~~

z0. ' l _ Ll I 1lll~~~l IC~r ^uI l -Ll L11 I r XT~~vIr 150 _~~~~~~~~~~~~~~~ 0lv ' sX'z TT IlL:l lII

_ Il §I 1111,1.NTl ll lI 11/11 IL Cn I-z 125 , 01lT IlX IT Il 0

0: I i, I, I I, ~~~~~~~10,IIX, II ,l,,

10C _1II rl T I III I I IIII llI Lll T_ 7 X11 1 1 z _ I I II l rl l l l l l l l ll l l l ll _ llll 0

0 I

. 75 5c 2Er 0

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 Ž225 and S 231 steps withdrawn.

Unit 1 Cycle 6 WAITS BAR Page 6 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 1.2 1.1 1.0 0.9 0.8 la

0) 0.7 0-a LL 0.6 i _ . _ _ _ ~~~~~~Core Heioht_

a) -

0.000 1.000

.N - - - _-- 6.000 1.000 i _ ___12.000 0.9256 0.5 0

z 0.4 0.3 I - _ a=

0.1 0

0 2 4 6 8 10 Core Height (feet)

Figure 2 K(Z) - Normalized F,(Z) as a Function of Core Height Unit 1 Cycle 6 WAITS BAR Page 7 of 18 Revision 4

A -~ ~~~~~~~...

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 120 110 L-a) 0 I-Q.

a) co 0

-50 -40 -30 -20 -10 0 10 20 30 40 50 Flux Difference (Al) %

Figure 3 Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC)

Unit 1 Cycle 6 WAITS BAR Page 8 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign Height Max

- -I -I -I -I -I I- -I I I- -I -I I- I -I I -I - - - - - - - -I -I - -III - - II- - - -I -I - -III- - (teet) W(z)

- H I I I I I I--- --- ------- --U-LLLL - Hill o.0000 1.0000

-- TT-I 0.2000 1.0000

-I I T-H I -LL -- -------

--- Ili Jll- -- JHill H 11 0.4000 1.0000 7- - - - I-FFTT 0.6000 1.0000

- 11111111 - -- :--- _a I ID - Hill 0.8000 1.0000 1.0000 1.0000 1.2000 1.2820

1. 40111111111 11111 lll 111111111 1 1111 1.4000 1.2685 1.6000 1.2526 1.8000 1.2352 IN111111 11-111-11111 NHIMM11111 1111111111 11 2.0000 2.2000 1.2169 1.1980 2.4000 1.1787

........ ....... ........ ..................... 2.6000 1.1594

I-LLLI -JAAJ-L-.-l 2.8000 1.1394

3.0000 1.1236

-411ul 3.2000 3.4000 1.1158 1.1142 1.30 3.6000 1.1141 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 i i i i i i ! I I I I I. I . I I 3.8000 1.1149 1 1 1 1 111-1 11 1 1 1 1 1 1 1 1 1 1............

1 11111 11111 4.0000 1.1160 4.2000 1.1 17b N 4.4000 1.1190 I I I IIIIiII I II I III I I

. .i .i .i . .m. i. . i. . . . . . . . .i. .i. . i. i. i. .ir. . .i . .i i. iA

. . . . . .i . i - i--t i i I 4.6000 4.8000 1.1215 1.1229 5.0000 1.1270 5.2000 1.1374 1.20 MM

........IMI !I11111 !MMMM M! IT! ll ll I...................................... 5.4000 1.1521 5.6000 1.1653 5.8000. 1.1796 I IIIII I-I I II I I.I.I.I-( . .I.I-m-H

. .. . . . I-Ij

. . . .I .Ij. .I .I-I-I

. . .h-I

. .rd

. . .ill

. I 6.0000 1.1951 I I I I I I I I .1I I I I-Li IJ41-W- 6.2000 1.2099

.- 111111 IQ II11111 111411 11111 11111 11111 6.4000 1.2232

.- iiiiii I LI I11111 111111 11111 11111 11111

6.6000 6.8000 1.2349 1.2449 7.0000 1.2530

............................................. 7.2000 1.2591 1.10 7.4000 1.2631 7.6000 1.2646

- - - - - - - - - - - - - - I- I- - I- I- - - - - - 1 - - - --1.1- 1-1111

- - - - - - - --1 1.1

- - - L- 7.8000 1.2637

- 1 II11111 I 1111 11111 J= 8.0000 1.2602 111 11111 1 1111 11111 H il l 8.2000 1.2541

-i ii-i i i i U 111111111 H U-1 8.4000 1.2452 8.6000 1.2330 8.8000 1.2206 9.0000 1.2152 IM11111 11111 11111 111111 MIMMI1111 MM 9.2000 1.2149 1.0 0H JA III III III III III III III III III III III III III I J. 9.4000 1.2146 0 2 3 4 5 6 7 8 9 10 11 1.2 9.6000 1.2102 9.8000 1.2111 BOTOK5 TOP 10.0000 1.2176 CORE HEIGHT (FEET) 10.2000 1.2229 10.4000 1.2303 10.6000 1.2366 Figure 4 10.8000 1.2409 11.0000 1.0000 RAOC Summary of Max W(z) at 150 MWD/MTU 11.2000 1.0000 with HFP AFD Band of -12/+6 % 11.4000 1.0000 11.6000 1.0000 Cop and Bottom 10% Excluded) 11.8000 1.0000 12.0000 1.0000 Unit 1 Cycle 6 WA1TS BAR Page 9 of 8 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign

. .. . .. . . . . . . . . . . . . . . . . . . . . . Helght Max.

1.50 (reet) W(z) 0.0000 1.0000 111111111111111111111111111111-1111111111111.. 0.2000 1.0000 C.~~ II Hil_ I II II -iI illTI I IiII IT 0.4000 1.0000 0.6000 1.0000 UliiiiI §l l lr @1l 0.8000 1.0000

: ::: 1.0000 1.0000 1.2000 1.2818 1.4000 1.2679 1.4 1.6000 1.2515 1.8000 1.2335

. . . . . . . - -- . . . . . 2.0000 1.2144

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

2.2000 1.1947 I 2.4000 1.1746 C. III I I 1

I-lIII-1 I- I IIl u I ii1I I

.1 I 111111 11111 1 1 1 1 I I 1:

[11111:

2.6000 2.8000 1.1546 1.1344

. 1 1 W il 111111 11111 I 3.0000 1.1231

11: ; 1 11 III;:: 1111 111111 II 3.2000 1.1201 3.4000 1.1174 1.30 11111 1 11 11111111 1111111 1 111111111 1 3.6000 1.1156 I:111 :I111
111 II lr 11111 11117 11111ll 3.8000 4.0000 1.1132 1.1131

. . . . . . . 4.2000 1.1153 4.4000 1.1166 S 4.6000 1.1176

. - - - - - - - - - - - - - - - - - - - - - - - - - -iA --- 4.8000 1.1187 5.0000 1.1185

1: :11 :M 111 M il::::::IM 111 111-1^1 I I Ml!l 5.2000 1.1200 5.4000 1.1329 1.2 5.6000 1.1445

. ,,,,, . ,,,, ... ..... ,, 5.8000 1.1572 6.0000 1.1714

.r . _ . ~ .~ 1l 11 -l 11 11 11 ....... Il 6.2000 1.1850 6.4000 1.1972 6.6000 1.2082 6.8000 1.2176

.0I 7.0000 1.2253 7.2000 1.2313

1. H :  : I '12 :ii  : : : ; 11111 I1 li IIITTITI 7.4000 7.6000 1.2353 1.2372 7.8000 1.2370 8.0000 1.2344 111111 1111111111111111 11111 11 111 8.2000 1.2294 8.4000 1.2220 8.6000 1.2120 8.8000 1.1995

.. .. . . . . . . . . .. . . .. . . . .. . . . 9.0000 1.1937

-- - - - - - - - 9.2000 1.1948 1.0 IX 'j L I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 9.4000 1.1999 l1 9.6000 1.2075 0 1 2 3 4 5 6 7 8 9 10 11 12 9.8000 1.2145 BOTTOM TOP 10.0000 1.2209 CORE EXIGHT (FEET) 10.2000 1.2287 10.4000 1.2369 10.6000 1.2439 Figure 5 10.8000 1.2489 11.0000 1.0000 RAOC Summary of Max W(z) at 3000 MWD/MTU 11.2000 1.0000 with HFP AFD Band of -12/+6 % 11.4000 1.0000 11.6000 1.0000 (Top and Bottom 10% Excluded) 11.8000 1.0000 12.0000 1.0000 Unit 1 Cycle 6 WATITS BAR Page 0 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 1.5c Height Max.

(feet) W(z) lIlII 0.00Do 1.0000

_ 0.2000 1.0000 II I IIII_ 0.4000 1.0000

_111111_ 0.6000 1.0000 X1 X 11111 0.8000 1.0000 1.0000 1.0000 1.2000 1.2660 1.4000 1.2557 1.6000 1.2431 1.8000 1.2290 2.0000 1.2141 2.2000 1.1985 2.4000 1.1826 2.6000 1.1663 2.8000 1.1498 3.0000 1.1350 3.2000 1.1268 3.4000 1.1257 3.6000 1.1248 3.8000 1.1250 t ill I I I H il l ti ll III I ti ll 4.0000 1.1258 114 111 little lim it I 1111 4.2000 1.1261 I I lot I I I I I I I I I I I II I I I 4.4000 1.1261 II1AI I 4.6000 1.1274 4.8000 1.1289 5.0000 1.1298 1q 5.2000 1.1330 I1 41 5.4000 1.1481 5.6000 1.1644 HAA l i t t l e t i l l I 1 1 1 1 61A I II -III IPWI ooo0 6.0000 1.1796 1.1936

1.111 11 1 6.2000 1.2061 6.4000 1.2172 6.6000 1.2267 6.8000 1.2344 7.0000 1.2403 7.2000 1.2442 7.4000 1.2459

-,--I I III II II I I 7.6000 1.2455 II II II II I 11 1 1 1 11 I 11 11 11L I l i t tl e I I 7.8000 1.2428 111 11 1 I l i t t l e I 111 11 I I 8.0000 1.2376 111 11 1 I I I I I I I I III II I I 8.2000 1.2301 lit t l e 1-1.1. I I 8.4000 1.201

- - -111111 -1. 8.6000 1.2071 T TFF IILLL-H-1 ~ 8.8000 9.0000 1.1946 1.1872 JOEL 9.2000 1.1855 1.0 I 1.1I 1 1I1 A1 Blow 1 9 I I I I 9.4000 1.1840

. . . . . . . . . I . - -- - I 9.6000 1.1820 0 2 3 4 5 6 7 8 9.8000 1.1800 BOTTOM CORE HEIGHT (FEET) TOP 10.0000 1.1787 10.2000 1.1786 10.4000 1.1804 10.6000 1.1850 Figure 6 10.8000 1.1889 11.0000 1.0000 RAOC Summary of Max W(z) at 10000 MVVD/MTU 11.2000 1.0000 with HFP AFD Band of -121+(  ;% ~~~~~11.4000 1.0000 11.6000 1.0000 (Top and Bottom 10% Excludi !d) 11.8000 1.0000 12.0000 1.0000 Unit 1 Cycle 6 WAITS BAR Page 11 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 1.s0 I I I I I I I I I I I I I I I I I II I Height Max.

I I I

- 1.111 LLLL_ ILL--- LLL - . I _U (feet) W(z) 0.0000 1.0000

__ __ TFF :a 0.2000 1.0000

= :Lm - 7 7- = ,:-
1_

-111 0.4000 0.6000 0.8000 1.0000 1.OOa 1.0000 1.0000 1.0000 1.2000 1.2660 1.4 .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4000 1.2561

................ ........... ....... ........................................................ 1.6000 1.8000 1.2441 1.2308

- HM M . HiM M .. I.. M I ......... ....... 2.0000 1.2168 LI-1 - 11111111 --- 2.2000 1.2023

- II LL I I I I "-LL- I IIII 2.4000 1.1875

- I LL111 _11 - - - - -.- H LI 2.6000 1.1725

- I I I H LLL_ = Full- 2.8000

.- - I LUTI 1.1567

- _LIjUI 3.0000 1.1487

_J1111111-1 --- -TUT-UJ1.11111M 3.2000 1.1481 1.30 --------- 3.4000 1.1481

.1-1--------- LL 1---------

1.1 1-1-1 1-1 3.6000 1.1507

- 11.11-1-Lu I-I Li III-111 -LUILIJ-1-1 -,. 3.8000 1.1556 D-M -JI-11 11111hvml -ILi IJ -1J.-I. 4.0000 1.16Q5 N 4.2000 1.1643

. . . . . . . . JI-111-11-11 i- -W - - 14

- - - -I -I C-

- -a-W 4.4000 1.1674 4.6000 1.1696 Mii11 il. M! M .1 M.I 1 .7MIM! 1 il 4.8000 5.0000 1.1703 1.1719

5.2000 1.1781 1.20

. .- I I I I... ... .. ........... -- . ... ..... . ..... 5.4000 1.1902

...................... I.......... ..............---------------------------- --- .. 5.6000 1.2046 5.8000 1.2190 I . . . . . . . . . . rr I I I I I I I I I I I I I I I I. . . 6.0000 1.2319 6.2000 1.2430 111111111 111 1111 li MI1 i 1ll 6.4000 6.6000 1.2521 1.2592 IItAI 6.8000 7.0000 1.2643 1.2671 7.2000 1.2677 7.4000 1.2659 7.6000 1.2618 7.8000 1.2551

. 8.0000 1.2460

1. 2 3 4 5 8.2000 1.2344
6. . ... 8. . . . 10 8.4000 1.2203 8.6000 1.2044 8.8000 1.1926 9.0000 1.1812 9.2000 1.1678 1 2 3 9.4000 1.1639 4 5 6 '7 8 9 10 t3 12 9.6000 1.1660 9.8000 1.1730 CORE HEIGHT (FEET) TOP 10.0000 1.1810 10.2000 1.1880 10.4000 1.1944 Figure 7 10.6000 1.1997 RAOC Summary of Max W(z) at 16000 MWD/MTU 10.8000 1.2032 11.0000 1.0000 with HFP AFD Band of -12/+6 % 11.2000 1.0000 11.4000 1.0000 (Top and Bottom 10% Excluded) 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 Unit 1 Cycle 6 WAITS BAR Page 12 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign Table A.1 FQ(Z) Penalty Factor Core FQW(Z)

  • Burnup Penalty (MWDMTU) Factor All burnups 1.0200 Note:
1. 'the Penalty Factor, which is applied to F(Z) for compliance with Surveillance Requirement 3.2.1.2.a, is the maximum factor by which FQW(Z) is expected to increase per 31 Effective Full Power Days (EFPD) starting from the burnup at which the FW(Z) was determined.

Unit 1 Cycle 6 WA`TS BAR Page 13 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 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) o 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 28 100 100 102 102 104 104 34 34 l 106 106 _

+/-

36, ___________

36 108 108 38 38 _ __ 110 110 40% 40 112 112 42 42 114 114 44 44 116 116 46 46 118 118 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 6 WAITS BAR Page 14 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 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 92 146 146 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 1118 172 172 44 248 1120 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 12 184 184 56 260 132 4 186 186 58 262 134 6 188 188 60 264 136 8 190 190 62 266 138 10 192 192 64 268 140 (12 194 194 66 270 142 14 b 196 196 68 272 144 16 198 198 70 274 146 18 200 200 72 276 148 20 202 202 74 278 IS0 22 204 204 76 280 152 24 206 206 78 282 154 26 208 208 80 284 156 28 210 210 82 286 1 158 30 212 212 84 288 160 32 214 214 86 290 162 -34 216 216 ' 88 292 164 36 218 218 90 294 1166 138 Unit I Cycle 6 WATTS BAR Page 15 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 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) 296 168 40 370 114 298 170 42 372 116 300 172 44 374 l 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 8 320 192 64 394 322 138 10 194 66 396 _ 140 12 324 196 68 398 142 14 326 198 70 400 144 16 328 200 72 402 . l 146 18 330 202 74 404 1148 20 332 204 76 406 150 22 334- 206 78 408 152 24 336 208 80 410 j _ 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 6 WAITS BAR Page 16 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign 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) 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 74 532 148 460 462 204 206 76 78 534 I _ _ 150 536 I 152 464 208 80 538 ' 154 466 468 210 212 82 84 540 _ j 156 542 i 158 470 472 _

214 216 86 88 544 546 1 _ 160 162 474 218 90 548 476 478 220 222 92 94 550 552 I 164 166

_ 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 S00 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 __ _ _ _ _ _ __ _ j __ __ 206 Unit 1 Cycle 6 WAITS BAR Page 17 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 6 - TPC Redesign Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Overlap Counter (steps)__ _ _ _ __ _ _ _

592 208 594 210 596 212 598 214 600 216 602 218 604 220 606 r 222 608 224 610 . 1226 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 >225 and <231 steps withdrawn. The Table indicates a maximum step of 232 to be consistent with 2 step increments.

Unit I Cycle 6 WATTS BAR Page 18 of 18 Revision 4

L36 030925 800 QA Record WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 6 CORE OPERATING LIMITS REPORT, REVISION 5( '1 IMPLEMENTATION LIMITED TO MODE 6 AND MODE 5 September 2003 Prepared:

N Fuel r, - -u I -

/ I 4c.. A?-.

Nur Fuel 'a' Date Reviewed:

I-yI s-':,** I , 3 Reactor Engieering'Supervisor Date Appr Q~rations Manager I'AL& Z- -/A) I Date 9/A -3 PORC Chairman Date Date of PORC PORC Meeting Affected Revision Approval Number Pages Reason for Revision 0 n/a n/a All Initial issue 1 n/a n/a All Early shutdown of cycle 5 2 n/a n/a 1 and 9 Add missing data to Figure 4 3 9/26/03 '5 34,3.8 consistency with TS

___ ___ ___ _ _ ___ __ _ 'AS"~?)L/~ S nom enclature Unit 1 Cycle 6 WATTS BAR Page 1 of 18 RevisionX'-  ; e./)

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 6 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,(Z))

3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FH')

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 1 Cycle 6 WNATTS BAR Page 2 of 18 Revision 1

COLR for Watts Bar Unit , Cycle 6 - TPC Design 2.1 MODERATOR TEMPERATURE COEFFICIENT - MTC (LCO 3.1.4) 2.1.1 The MTC limits are:

The BOIJARO/HZP - MTC shall be less positive than or equal to 0 k/°F (upper limit). With the measured BOLAROIHZP - MATC more positive than

-0.70 x 10 ' ALdcld0F (as-measured MTC limit), establish control rod withdrawal limits to ensure the MTC remains less positive than or equal to 0

&/kf°F (upper limit) for all times in core life.

The EOIJARO/RTP - MTC shall be less negative than or equal to

-4.5 x 104 Ak/k1PF (lower limit).

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

-3.75 x 10' Ak/ 0 F.

2.1.3 The 60 ppm surveillance limit is:

The measured 60 ppm /AROIRTP-MTC should be less negative than or equal to

-4.28 x 104 Ak/kI0 F.

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 1 Cycle 6 WATTS BAR Page 3 of 18 Revision 3

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 2.4 HEAT FLUX HOT CHANNEL FACTOR - FQ(Z) (LCO 3.2.1)

Fq(Z) [CFQIPJ*K(Z) for P>0.5 FQ(Z) < [CFQ/ 0.5]

  • K(Z) for P
  • 0.5 Where P = Thermal Power / Rated Thermal Power 2.4.1 CFQ = 2.50 2.4.2 K(Z) is provided in Figure 2.

2.4.3 FQc(Z) = Fq"'(Z) 1.0815 where: F(Z) is the measured value of FQ(Z) obtained from incore flux map results and 1.0815 is a factor that accounts for fuel manufacturing tolerances and flux map measurement uncertainty.

2.4.4 FQW(Z) = Fq&(Z) W(Z) where: W(Z) values are provided in Figures 4 through 7. The figures provide sufficient information to determine W(Z) versus core height for all cycle burnups.

2.4.5 FQW(Z) 'Penalty Factor The FCw(Z) penalty factor is provided in Table Ap.

Unit 1 Cycle 6 WATS BAR Page 4 of 18 Revision 3

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 2.5 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR - Fa 3 N (LCO 3.2.2)

F'Sti <F *( +PF 1l-P))

where P = Thermal Power / Rated Thermal Power F&HX1 = 1.65 for RFA-2 fuel, and Faze = 1.62 for VAN1TAGE+/PERFOR'MANCE+ fuel PF = 0.3 2.6 AXIAL FLUX DIFFERENCE - AFD (LCO 3.2.3) 2.6.1 The AFD limits for Cycle 6 are provided in Figure 3.

2.7 REFUELING BORON CONCENTRATION (LCO 3.9.1) 2.7.1 The refueling boron concentration shall be > 2103 ppm.

2.8 ACCUMULATORS (LCO 3.5.1) 2.8.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactoi-core for Cycle 6.

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 6.

Unit 1 Cycle 6 WATTS BAR Page 5 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 250 (0.074,231) 231 225 606.

I I I T I I 200 175 0011 0

0 150 Ole uJ I-125 z

0*

0.

z 100 iI 1Vi-9 1I 1I i 1i 1 1I 1i Ii 1I 1I i 1W 1fi 1 1i 1M 1i 1I :I 1M 1! 3F17Fi --.

1 1- 1---

CD H I II rm

.I... . . . . . . . . . . . . . . I----i-I 0

0 75 i . . . . . . . . . . . . . . . . . . . . I. . . . . . . . I. . . . . .

a: 11 1 1 1 I 1 1A 1 1 1 1 1 !--I N- I-I I I I I. I I .

I I I I I I I I I I I I I I 1-1-1 1-41 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 50 ------ ......

25 I Y1 oe 0

0 0.20 OA0 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 2 225 and < 231 steps withdrawn.

Unit 1 Cycle 6 WAITS BAR Page 6 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 1.2 1.1 1.0 0.9 0.8 Q

3 0.7 LL

. 0.6 FCoe Height K( -

0.000 1.000 N - - - - j ~~~~~6.0001.000 123.000 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 F,(Z) as a Function of Core Height Unit 1 Cycle 6 WArITS BAR Page 7 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 120 110 100 90 80 00- 70

-a E

60 50

-c

.3 40 30 20 10 0

-50 -40 -30 -20 -10 0 10 20 30 40 50 Flux Difference (Al) %

Figure 3 Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC)

Unit 1 Cycle 6 WATTS BAR Page 8 of 18 Revision 1

COLR for Watts Bar Unit , Cycle 6 - TPC Design

. .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Height &12x.

'LI1 '111111111111111111'i i 1111ii  ! ii i i iIi (reet) 0.0000 W(z) 1.000U 0.2000 1.0000

!!!111111 11111 MIMI IMMMMM! 0.4000 0.6000 1.0000 1.0000 0.800U 1.0000

................. I.........- ...........

1.0000 1.0000 1.2000 1.2820 1.4000 1.2685 i1- n. 1 I I I I I I I I I I I I I I I If I I I I I I I I I I I I 1.6000 1.2526 1.8000 1.2352 2.0000 1.2169 I............ .....................

2.2000 1.1980 2.4000 1.1787 i i i I i I i i i i1111111 111111111 111111111. 2.6000 1.1594 1111111111

.......... H.........

H -H i H I,11111 11111 11111 2.8000 3.0000 3.2000 1.1394 1.1236 1.11 58 3.4000 1.1142

. . . . - . . . I . . . . . . .. . .. . . . . . . . . . . . . . . .

1.30 -........................................ 3.6000 1.1141 3.8000 1.1149 11  !!'!.!!111111 MM11111 Ill I!11111 Mill I.............................. 4.0000 4.2000 1.1160 1.1170 4.4000 .1190 ill 111111 111111111 N1111111 4.6000 1.1215 I N I I I I ill I I 1111 11 11N11 1111W ll 1- 4.8000 5._0000 1.1229 1.1270 I I I I I I I II I I I I I I I I I I I I I I Ij I I I I I I I I I I I I It 5.2000 1.1374 5.4000 1.1521 1.20 11, . . . . . . . .. . . . .

5.6000 1.1653 I II I I LI I I. .I II .. . . .. . . . . . . . 5.8000 1.179G 6.0000 .1951 6.2000 1.2099 6.4000 1 2232 6.6000 1.2349 6.8000 1.2449 7.0000 1.2530 4a I I 7.2000 1.2591 7.4000 1.2631 l.lC( 7.6000 1.2646 7.8000 1.2637 8.000 1.2602 I LLLL I -1H B.2000 1.2541 9.4000 1.2452 8.6000 1.2330 8.8000 1.2206 9.0000 1.2152 9.2000 1.2 49 1.00 JAALJ I I I I I II II 1 11 1 1 11 1 1 1 1 11 1 I I I 9.4000 1.2146 0 1 2 3 4 5 6 7 a 9 10 1.2102 9.8000 1.2111 BOTTOM TOP 10.0000 1.2176 CORE HEIGHT (FEET) 10.2000 1.2229 II.4000 1.2303 1.2366 Figure 4 10.8000 1.24n9 11.0000 1.0000 RAOC Summary of Max W(z) at 150 MWD/MT 10. 6000 U ~~~11.2000 1.0000 11.4000 1.00co with HFP AFD Band of -121+6 % 11.6000 1.0000 (Top and Bottom 10% Excluded) 11.8000 1.0000 12.0000 1.0000 Unit I Cycle 6 WATTS BAR Page 9 of 8 Revision 2

i COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 1.so Height Max.

(feet) 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 1.2818 1.4000 1.2679 1.40 1.6000 1.2515 1.8000 1.2335 2.0000 1.2144 CE I .. . I. 111111--11. II .. 1111111111..II II II. 2.2000 2.4000 1.1947 1.1746 2.6000 1.1546 2.8000 1.1344 3.0000 1.1231 I 11.rI- I,....

I II T I I1I 3.2000 3.4000 1.1201 1.1174 1.30 3.6000 1.1156 T.r............

III! I It' liii!

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

. . . . It. 11111111111111111111111111111

. . . . . . . liii 3.8000 4.0000 1.1132 1.1131 4.2000 1.1153 N

im :nimm imi i nimpnll APii I I AI n 4.4000 4.6000 4.8000 5.0000 1.1166 1.1176 1.1187 1.1185

. . . I I I I I I i I I I I I I I I. I I I 1 i I F I I I I I 1 I . . . I 5.2000 1.1200 5.4000 1.1329 1.2 5.6000 1.1445 5.8000 1.1572 6.0000 1.1714 6.2000 1.1850 6.4000 1.1972 6.6000 1.2082 6.8000 1.2176 7.0000 1.2253 7.2000 1.2313 7.4000 1.2353

' 1.10 7.6000 1.2372 MII : 1IM111 I I M11111111111111111111i 7.8000 8.0000 1.2370 1.2344 I M :: t 1111 1111M 11111 M1111 1111 1111 1 8.2000 1.2294 8.4000 1.2220 8.6000 1.2120 T11 I I I I I I I I 11 I 11 11 I I1I I I1I I I I 1111 I 8.8000 1.1995 9.0000 1.1937 9.2000 1.1948 1.00 I 11111 I 1 LI 9.4000 1.1999 9.6000 1.2075 0 1 2 3 4 5 6 7 8 9 10 11 1 9.8000 1.2145 BOTTOM CORE EIGHT (FEET) TCDP 10.0000 1.2209 10.2000 1.2287 10.4000 1.2369 10.6000 1.2439 Figure 5 10.8000 1.2489 11.0000 1.0000 RAOC Summary of Max W(z) at 3000 MWD/MTU 11.2000 1.0000 11.4000 1.0000 with HFP AFD Band of -121+6 % 11.6000 1.0000 (Top and Bottom 10% Excluded) 11.8000 1.0000 12.0000 1.0000 Unit 1 Cycle 6 WAIS BAR Page 10 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design Height Max.

(feet) W(z) 11 11 11lI II 11 11 III II I III I III I 11 11 11-Ll l 0.0000 1.0000 0.2000 1.0000 0.4000 1.0000 111111111i! i 111 11 11 111 1 1111 111 11 111 11 1111 1I 0.6000 0.8000 1.OO0 1.0000 1.0000 1.0000 L1.1- 11 11 11111 1111 11 11 1 1 11 111111 L 1.2000 1.2660 1.4000 1.2557

1. 40 1 11 11 111 11 11 111 11 11 1 1 11 11 111 1

- - - - 11111 11 111 1 1 1 1 1 1 1 1-I 1.000 1.2431 1.8000 1.2290 2.0000 1.2141 iiiii l 1111111111111111ilii 11ili 111111 I 2.2000 1.1985 2.4000 1.1826

!1 1 !I!!! !I I MII! M M111111111111 11 1111111 2.6000 2.8000 1.1663 1.1498 3.0000 1.1350

. 3.2000 1.1268 1.30

. . . . . . . . . . . . . . . .. 3.4000 1.1257 3.6000 1.1248 3.8000 1.1250 4.0000 1.1258 I III i I I II.II I I It I. .I .I I I I II I II I IIIII 4.2000 1.1261 N 4.4000 1.1261 4.6000 1.127t I I I I 1 P1 1-... 11 111....11111

  • s I IIIII 4.8000 1.1289 5.0000 1.1298 5.2000 1.1330 1 -
a. I 111111T I 11111111i 111114 11111111PI 1111111111 5.4000 5.6000 1.1481 1.1644 i

1111 111 MUM 1111111 MMMM llrMM.V11 M 5.8000 6.0000 6.2000 1.1796 1.1936 1.2061 6.4000 -1.2172 6.6000 1.2267 1111111111. 111111111 6.8000 1.2344 7.0000 1.2403 7.2000 1.2442 7.4000 1.2459 1.1 1I 1I I P- 1 111111 f 1111111 I I 1 I 1111111 I 7.6000 1.2455 7.8000 1.242S 8.0000 1.2376 8.2000 1.2301 8.4000 1.2201 8.6000 1.2071 1111111111111111111111111111 11 11 11111111111 8.8000 9.0000 1.1946 1.1872 9.2000 1.1855

.1-n.0 l I 1 1 il I l Il I lll 1l l ll ll ll IIl ll 9.4000 1.1840 12 1.1820 l s s

  • s s E E . .......... - - - - - - - - -
  • iQd, 9.6000
  • Lul s x 0 1 2 3 4 5 6 7 8 9 10 21 9.8000 1.1800 BOTTOM CORE HEIGHT (FEET) TOP 10.0000 1.1787 10.2000 1.1786 10.4000 1.1804 10.6000 1.1850 Figure 6 10.8000 1.1889 11.0000 1.0000 RAOC Summary of Max W(z) at 10000 MWD/MTU 11.2000 1.0000 11.4000 1.0000 with HFP AFD Band of -12+6 % 11.6000 1.0000 (Top and Bottom 10% Excluded) 11.8000 1.0000 12.0000 1.0000 Unit 1 Cycle 6 WATTS BAR Page 11 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 1.50 Height M;

-I I I lI lIIII 11 m II- m1 I II I (feet) W Xz)

;II I; 11111111111111I11 1111 0.0000 1.0

-~~~~~rT I TI I I- TTTTT-II 0.2000 1.Cp000 1.0 000

= I : -1111 I ET~ll 0.4000 0.6000 1.C000 0.8000 1.C1000 1.0000 1.0 )00 1.2000 1.2.660

~~~~~. . . . . .. . . . .. . . . . . . . .

1.4000 1.2.561 1.40

.. . . . . . . .. . ,, ,, , ,, , ,, 1.6000 1.2.441 1.8000 1.2 .308 Iliii '11i 1lI'IlI' 11111 2.0000 2.2000 2.4000 2.6000 2.8000 1.2.168

1. .02.3 1.1.875 1.1.725 1.1157 3.0000 1.1.487 it . 1111 Il 11111 11 ... 1111111 IIIllTTII1M I Hl11 3.2000 1.11481 1.30 . 11I.1 !M11 III .l .II 11 1111111 3.4000 3.6000 1.11481 1.1L507 3.8000 1. LS56 N

11IIIIIIII1111 III 11III11IIIII11II11IIII 11 111I114-4+1 11-1 1-!MAj III 4.0000 4.2000

1. L605 1.2L643

.. ..... ..... ...... ..... 1114A 11114 1111 111111 1111111 ..... III ...... II _Ii ! i I I I I I 4.4000 1.2L674 4.6000 1. L696

. . . . _2.___. §llllll1l1111_.......l 4.8000 1. L703

.------------ 5.0000 1.1L719 5.2000 1.: L781 1.20 11 H111111'1111111 5.4000 5.6000

1. L902 11 2046 5.8000 1.S2190

.1 6.0000 1.S2319 6.2000 1S2430 ill 1MI lt111 Mull IHHLII IiLiIL 11 6.4000 -1.! 2521 11 6.6000 1. 2592

. . . . . _ . .- - - - - - - - - l- - -+- - l- - l- -,1 --1 1 l I 6.8000 1. 2643 K~~~~~~~fl~

7.0000 1.S2671 7.2000 1.:2677 1.11 C:  : : - : : : : ~~

- :::: 111111111111 11 : t 1

~l .1-11 7.4000 7.6000 7.8000 1.:2659 1.:2618

1. 2551 8.0000 12 2460 8.2000 1.:2344

.. .. .III li . 11. I............ 8.4000 1.: 2203 8.600 1.:2044 8.8W00 1.:1926 1_0 . _. _4 .. _. .lllll1m abt 9.0000 9.2000 9.4000

1. 1812 1!21678
1. 1639 0 2 2 3 4 5 6 7 8 9 10 11 12 9.6000 1.-1660 9.8000 1. 1730 BOT CORE HEIGHT (FEET) TOP 10.0000 1. 1510 10.2000 1.1880 10.4000 1. 1944 10.6000 1.1997 Figure 7 1.2032 10.8000 RAOC Summary of Max W(z) at 16000 MWDIMTU 11.0000 1. 0000 112000 1. 0000 with HFP AFD Band of -121+6 % 11.4000 1.10000 11.6000 1.'0000 (Top and Bottom 10% Excluded) 11.8000 1. 0000 12.0000 1. 0000 Unit 1 Cycle 6 WA1TS BAR Page 12 of 18 Revision 1

I a

COLR for Watts Bar Unit I, Cycle 6 - TPC Design Table A-1 FQW(Z) Penalty Factor Core FQ'W(Z)

Burnup Penalty (MWD/MTU) Factor 8149 1.0200 8300 1.0208 8450 1.0212 8601 1.0203 8752 1.0200 Notes:

1. The Penalty Factor, which is applied to FQW(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 Fw(Z) was determined.
2. Linear interpolation is adequate for intermediate cycle burnups.
3. For all cycle burnups outside the range of the table, a penalty factor of 1.020 shall be used for compliance with Surveillance Requirement 3.2.1.2.a.

Unit 1 Cycle 6 WATTS BAR Page 13 of 18 Revision 3

I COLR for Watts Bar Unit 1, Cycle 6 - TPC Design Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Band ABank BBank CBank D Bank Overlap Overlap Counter Counter (steps) __ _ _ _ __ _ _ _ _ (steps) o o 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 8 100 100 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 46 118 118 48 48 120 120 60 60 122 122 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 6 WA[TS BAR Page 14 of 18 Revision 3

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Band A Bank B Bank CBank D Bank Overlap Overlap Counter Counter (steps) (steps) 144 144 16 220 220 92 146 1 146 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 23G 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 50 254 126 160 180 52 256 -128 0 182. 182 54 258 130 2 184 184 56 260 132 4 186 186 68 262 134 6 188 188 60 264 136 B 190. 190 62 266 138 10 192 192 64 268 140 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 IS0 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 B6 290 162 34 216 216 88 292 164 36 218 218 90 294 166 38 Unit 1 Cycle 6 WAITS BAR Page 15 of 18 Revision 3

COLR for Watts Bar Unit 1, Cycle 6 - TPC Design 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) 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 66 386 130 2 314 186 58 388 132 4 316 188 60 390 134 6 318 190 62 392 136 a 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 j 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 62 364 108 438 182 54 366 110 440 184 6 368 112 442 186 58 Unit 1 Cycle 6 WATTS BAR Page 16 of 18 Revision 3

COLR for Watts Bar Unit 1. Cycle 6- TPC Design Table 1: Control Rod Overlap Band ABank BlBank CBank DIBank Band A Bank B Bank C Bank D Bank 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 i 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 94 652 168 480 224 96 664 170 482 226 98 556 172 484 228 100 558 174 486 230 102 560 176 488 . 232 104 562 178 490- 106 564 180 492 108 566 182 494 110 568 184 496 112 570 186 498 114 572 188 500 116 574 190 502 118 576 192 604 120 578 194 506 122 680 196 508 124 582 198 510 126 584 200 512 128 586 202 514 130 588 204 516 132 590 206 Unit 1 Cycle 6 WATTS BAR Page 17 of 18 Revision 3

COLR for Watts Bar Unit 1. Cycle 6 - TPC Design

- 7 Table 1: Control Rod Overlap Band ABank B Bank CBank DRank Overlap Counter (steps) 592 208 594 210 596 212 698 _ _ _ _ _ _ 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 225 and 5231 steps withdrawn. The Table indicates a maximum step of 232 to be consistent with 2 step increments.

Unit 1 Cycle 6 WAITS BAR Page 18 of 18 Revision 3

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