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{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 JAN22 200?U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Gentlemen:
{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 JAN22 200?
In the Matter of the ) Docket No. 50-390 Tennessee Valley Authority WATTS BAR NUCLEAR PLANT (WBN) UNIT 1 -CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 8, REVISION 3 The purpose of this letter is to provide Revision 3 of the Cycle 8 COLR in accordance with WBN Technical Specification 5.9.5.d. Revision 3 updates the axial flux difference limits and was in effect as of January 19, 2007.There are no regulatory commitments associated with this submittal.
U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Gentlemen:
If you have any questions concerning this letter, please contact me at (423) 365-1824.Sincerely, J. D. Smith Manager, Site Licensing and Industry Affairs (Acting)
In the Matter of the                                     )                               Docket No. 50-390 Tennessee Valley Authority WATTS BAR NUCLEAR PLANT (WBN) UNIT 1 - CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 8, REVISION 3 The purpose of this letter is to provide Revision 3 of the Cycle 8 COLR in accordance with WBN Technical Specification 5.9.5.d. Revision 3 updates the axial flux difference limits and was in effect as of January 19, 2007.
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, J. D. Smith Manager, Site Licensing and Industry Affairs (Acting)


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


Watts Bar Nuclear Plant Unit 1, Cycle 8 Core Operating Limits Report, Revision 3 cc: See Page 2 Prnted on recycled paper U.S. Nuclear Regulatory Commission Page 2 JAN 2 2 2007 Enclosure cc (Enclosure):
Watts Bar Nuclear Plant Unit 1, Cycle 8 Core Operating Limits Report, Revision 3 cc: See Page 2 Prnted on recycled paper
NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Mr. B. T. Moroney, 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 1 Cycle 8 Core Operating Limits Report, Revision 3 COLR for Watts Bar Unit 1, Cycle 8 QA Record L36 070117 805 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 8 CORE OPERATING LIMITS REPORT Revision 3 January 2007 Prepared by: Nuclear Fuel Date/#1 Date Reviewed bI& '/I-/7-67 Manager, Ntýýar Fuel Design Date/-/?- 0 7 Date Approved-ky\J,\
 
I I r --POC ./ Da I't e POROCha n rj Date Chairs/ Plant Manager/ o Date Date of PORC PORC Meeting Affected Revision Approval Number Pages Reason for Revision 0 N/A N/A N/A Not issued i N/A N/A 1, 9-13 Updated W(z) values, not issued 2 11/9/06 4178 3 Clarified text in 2.3.1 3 4 1q2 IAI 1 8-13 Increased postive AFD limit Unit I WATTS BAR Cycle 8 Revision 3 Page 1 of 19 COLR for Watts Bar Unit 1, Cycle 8 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 8 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 (FQ(Z))3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FAHN)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.
U.S. Nuclear Regulatory Commission Page 2 JAN 2 2 2007 Enclosure cc (Enclosure):
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 8 WATTS BAR Page 2 of 19 Revision 3 COLR for Watts Bar Unit 1, Cycle 8 2.1 MODERATOR TEMPERATURE COEFFICIENT  
NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Mr. B. T. Moroney, 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 (LCO 3.1.4)2.1.1 The MTC limits are: The BOL/ARO/HZP  
 
-MTC shall be less positive than or equal to 0 Ak/k/IF (upper limit). With the measured BOL/ARO/HZP  
Enclosure Watts Bar Nuclear Plant Unit 1 Cycle 8 Core Operating Limits Report, Revision 3
-MTC more positive than-0.20 x 10-5 Ak/k/°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 EOL/ARO/RTP  
 
-MTC shall be less negative than or equal to-4.5 x 10-4 Ak/k/°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 10-4 Ak/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 10-4 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.
COLR for Watts Bar Unit 1, Cycle 8 QA Record L36 070117 805 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 8 CORE OPERATING LIMITS REPORT Revision 3 January 2007 Prepared by:
2.3 CONTROL BANK INSERTION LIMITS (LCO 3.1.7)2.3.1 The control banks are fully withdrawn or shall be limited in physical insertion as shown in Figure 1.2.3.2 Table 1 shows the control rod overlap positions.
Nuclear Fuel       /               #1                         Date Date Reviewed bI&
Unit 1 Cycle 8 WATTS BAR Page 3 of 19 Revision 3 COLR for Watts Bar Unit 1, Cycle 8 2.4 HEAT FLUX HOT CHANNEL FACTOR -FQ(Z) (LCO 3.2.1)FQ(Z) _ [CFQ/P]
                                '                                   /I-/7-67 Manager, Ntýýar Fuel Design                                   Date
* K(Z) for P> 0.5 FQ(Z) _ [CFQ/ 0.5]
                                                                      /-/?- 0 7 Date Approved-ky\J,\
* 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) = FQM(Z)
I     I r --
POC
          **i                    .                           Da e  /   I't POROCha       rj n                                           Date Chairs/                                             (1(1(*07 Plant Manager       /   o                                   Date Date of     PORC PORC     Meeting     Affected Revision   Approval   Number       Pages     Reason for Revision 0           N/A       N/A         N/A     Not issued i           N/A       N/A       1, 9-13   Updated W(z) values, not issued 2       11/9/06     4178         3       Clarified text in 2.3.1 3                 4IAI1q2* 1 8-13         Increased postive AFD limit Unit I                                                                                 Cycle 8 WATTS BAR                                   Page 1 of 19                             Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 1.0   CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 8 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 (FQ(Z))
3.2.2 Nuclear Enthalpy Rise Hot Channel Factor     (FAHN) 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 8 WATTS BAR                                 Page 2 of 19                           Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 2.1   MODERATOR TEMPERATURE COEFFICIENT - MTC (LCO 3.1.4) 2.1.1 The MTC limits are:
The BOL/ARO/HZP - MTC shall be less positive than or equal to 0 Ak/k/IF (upper limit). With the measured BOL/ARO/HZP - MTC more positive than
                -0.20 x 10-5 Ak/k/&deg;F (as-measured MTC limit), establish control rod withdrawal limits to ensure the MTC remains less positive than or equal to 0 Ak/k/&deg;F (upper limit) for all times in core life.
The EOL/ARO/RTP - MTC shall be less negative than or equal to
                -4.5 x 10-4 Ak/k/&deg;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 10-4 Ak/k/&deg;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 10-4 Ak/k/&deg;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 are fully withdrawn or 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 8 WATTS BAR                                 Page 3 of 19                       Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 2.4   HEAT FLUX HOT CHANNEL FACTOR - FQ(Z) (LCO 3.2.1)
FQ(Z) _ [CFQ/P]
* 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) = 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.
* 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)
2.4.4 FQW(Z) = FQC(Z)
* W(Z)where: W(Z) values are provided in Figures 4 through 8. The figures 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 WATTS BAR Cycle 8 Revision 3 Page 4 of 19 COLR for Watts Bar Unit 1, Cycle 8 2.5 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR -FAHN (LCO 3.2.2)FAHlN <- FAHlRTP * ( 1 + PF * (1-P))where P = Thermal Power / Rated Thermal Power FAH RTP = 1.65 for RFA-2 fuel, and PF = 0.3 2.6 AXIAL FLUX DIFFERENCE -AFD (LCO 3.2.3)2.6.1 The AFD limits for Cycle 8 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 8.2.9 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 8.Unit 1 Cycle 8 WATTS BAR Page 5 of 19 Revision 3 COLR for Watts Bar Unit 1, Cycle 8 250 231 225 200<C0 I-a.U)0~0 I--(I-z',.0 a-0 0&#xfd;175 150 125 100 75 (0l074, 231) (0.632, 231)(0. 04 8, 225) 1 (0.606, 225)(0.0, 214) ...(1.0, 187)(0. 8 6)018,)-....I....0i OF: : 50 25 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.
* W(Z) where:   W(Z) values are provided in Figures 4 through 8.       The figures provide sufficient information to determine W(Z) versus core height for all cycle burnups.
Unit 1 WATTS BAR Cycle 8 Revision 3 Page 6 of 19 COLR for Watts Bar Unit 1, Cycle 8 (.0 0 Z N 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 Core Height K(Z)0.000 1.000 6.000 1.000 12.000 0.9256 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 WATTS BAR Cycle 8 Revision 3 Page 7 of 19 COLR for Watts Bar Unit 1, Cycle 8 120 110 100 90 80 70 60 50 a-F0 I-0 01 n0 40 30 20 10 0-50 30 10 0 10 Flux Difference (AI) %20 30 40 50 Figure 3 Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC)Unit 1 WATTS BAR Cycle 8 Revision 3 Page 8 of 19 COLR for Watts Bar Unit 1, Cycle 8 1.50 1.40 1.30 1.20 1.10! i I i i I i I I I I I I II I I i I II I I I I II I I I I I II I I I I i ! I I I I I I I I ,~ I I I I I I I I I I I 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 P ! I I ! I I I I ! I ! I I i ! I ! i i i I I I I I ! ! I I I r iI IL ! i , I I I ! AI I I iI I LI II I I I iI iI iiii ! ! i ii i I I i i ! I I I I I I I I I I I I I I I I I ! I I i ! i i i i -&#xfd;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 1.4289 1.4000 1.4092 1.6000 1.3863 1.8000 1.3613 2.0000 1.3348 2.2000 1.3075 2.4000 1.2793 2.6000 1.2506 2.8000 1.2279 3.0000 1.2080 3.2000 1.1925 3.4000 1.1863 3.6000 1.1836 3.8000 1.1807 4.0000 1.1772 4.2000 1.1732 4.4000 1.1686 4.6000 1.1634 4.8000 1.1575 5.0000 1.1512 5.2000 1.1438 5.4000 1.1362 5.6000 1.1364 5.8000 1.1443 6.0000 1.1538 6.2000 1.1614 6.4000 1.1681 6.6000 1.1735 6.8000 1.1775 7.0000 1.1800 7.2000 1.1811 7.4000 1.1816 7.6000 1.1807 7.8000 1.1782 8.0000 1.1739 8.2000 1.1678 8.4000 1.1599 8.6000 1.1495 8.8000 1.1409 9.0000 1.1390 9.2000 1.1417 9.4000 1.1411 9.6000 1.1425 9.8000 1.1436 10.0000 1.1448 10.2000 1.1492 10.4000 1.1551 10.6000 1.1599 10.8000 1.1628 11.0000 1.0000 11.2000 1.0000 11.4000 1.0000 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000!i i i LII i 'i I LiI i i ii I i i i i i I iI I i I I II II I II II iiiii i i i i ! i i i i i i i i i i- a i i i i i ! i j i i i 6 It, 14 '1111 i i i i i i i ! i i i ! i i ! i I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1!I i i i i i I I ! I I ! I I ! I IL I II I I I II I II I I ! i II !i ! !! i i i !! I 0 BOTTOM f 2 3 4 5 6 7 8 CORE HEIGHT (FEET)9 10 11 12 TOP Figure 4 RAOC Summary of Max W(z) at 150 MWD/MTU with HFP AFD Band of -12/+7 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Cycle 8 Revision 3 Page 9 of 19 COLR for Watts Bar Unit 1, Cycle 8 1.50 1,40 1,30 1,20 110 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 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!111!111!111!111!1111ill!lll!lll!lll!lll!lll!lm I! Il~ II II II I III Ill III I I Height (feet)0.0000 0.2000 0.4000 0.6000 0.8000 1.0000 1.2000 1.4000 1.6000 1.8000 2.0000 2.2000 2.4000 2.6000 2.8000 3.0000 3.2000 3.4000 3.6000 3.8000 4.0000 4.2000 4.4000 4.6000 4.8000 5.0000 5.2000 5.4000 5.6000 5.8000 6.0000 6.2000 6.4000 6.6000 6.8000 7.0000 7.2000 7.4000 7.6000 7.8000 8.0000 8.2000 8.4000 8.6000 8.8000 9.0000 9.2000 9.4000 9.6000 9.8000 10.0000 10.2000 10.4000 10.6000 10.8000 11.0000 11.2000 11.4000 11.6000 11.8000 12.0000 Max.W(z)1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.4122 1.3929 1.3705 1.3459 1.3200 1.2930 1.2656 1.2381 1.2095 1.1880 1.1763 1.1702 1.1676 1.1653 1.1625 1.1592 1.1554 1.1511 1.1462 1.1409 1.1345 1.1280 1.1290 1.1397 1.1532 1.1644 1.1748 1.1838 1.1914 1.1974 1.2018 1.2044 1.2052 1.2040 1.2007 1.1953 1.1877 1.1776 1.1675 1.1642 1.1691 1.1735 1.1753 1.1756 1.1785 1.1850 1.1892 1.1929 1.1942 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000.....[. I i i ...................... .....1 1 ; 1 1 1 1 1 1 1 1 1 1 1 1 1 + A 1 1 1 i 1 1 1-4 1 1 1 1 1 1 1 1 1 i T 1 1 1 1 1 1 1 1 1 1 1 'II II III I I II I III III I I liii CIII III I III II I I I I i ! I II I ! I i ! I I ! i ! i i i i i i i i ! i I I I iII I ; I I 111111 II II 111111 11111 III 1.BoTo BOTTOM 3 4 5 6 7 8 CORE HEIGHT (FEET)9 10 1 12 TOP Figure 5 RAOC Summary of Max W(z) at 2000 MWD/MTU with HFP AFD Band of -12/+7 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Cycle 8 Revision 3 Page 10 of 19 COLR for Watts Bar Unit 1, Cycle 8 1.50 1.40 1.30 1.20 1.10 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 III 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 t-' ' 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= [ M l I IFI I 11 1! 1 1 11 11 111 I !1i1!i1r r r Heioht 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 1.3388 1.4000 1.3226 1.6000 1.3035 1.8000 1.2826 2.0000 1.2603 2.2000 1.2378 2.4000 1.2168 2.6000 1.1980 2.8000 1.1795 3.0000 1.1606 3.2000 1.1467 3.4000 1.1423 3.6000 1.1413 3.8000 1.1403 4.0000 1.1389 4.2000 1.1372 4.4000 1.1352 4.6000 1.1327 4.8000 1.1298 5.0000 1.1266 5.2000 1.1226 5.4000 1.1216 5.6000 1.1324 5.8000 1.1447 6.0000 1.1546 6.2000 1.1640 6.4000 1.1722 6.6000 1.1790 6.8000 1.1846 7.0000 1.1885 7.2000 1.1911 7.4000 1.1933 7.6000 1.1938 7.8000 1.1925 8.0000 1.1895 8.2000 1.1843 8.4000 1.1772 8.6000 1.1725 8.8000 1.1695 9.0000 1.1671 9.2000 1.1635 9.4000 1.1581 9.6000 1.1636 9.8000 1.1720 10.0000 1.1779 10.2000 1.1830 10.4000 1.1864 10.6000 1.1902 10.8000 1.1923 11.0000 1.0000 11.2000 1.0000 11.4000 1.0000 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 II I II~ 111111111 II 111111111 11111 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 IN i i i i i i i i, I is i i i P i i i i i i i i i i i i I i i I i i i ' i i I' -? i i ill i i i i i i i I i i I I i i I I I=1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1 1 1 1 1: 1 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 1.00 1 jj.I 0 BOTTOM f 2 3 4 5 6 7 8 CORE HEIGHT (FEET)9 10 11 12 TOP Figure 6 RAOC Summary of Max W(z) at 4000 MWD/MTU with HFP AFD Band of -12/+7 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Cycle 8 Revision 3 Page 11 of 19 COLR for Watts Bar Unit 1, Cycle 8 1.50 1.40 1.30 1.20 1.10 1 1 1 1 1 .1i 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 III!ill 1 !111111 M! 1111 ill 11111 i ~ ~ ~ 1 1 1 i;;iiiii i i i i i ii![ I I I I [ I I C I I I i !1 .1 11 .11 1 0 i 1 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ! 1 1 1 ! 1 1 1 ! 1 1 ,I I I , I I,1 1 11 1 111111111 1 1. 1"11 1 1 1 .,! I I I 1 Height Max.(feeD 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 1.2433 1.4000 1.2346 1.6000 1.2237 1.8000 1.2116 2.0000 1.1988 2.2000 1.1856 2.4000 1.1721 2.6000 1.1584 2.8000 1.1443 3.0000 1.1328 3.2000 1.1289 3.4000 1.1301 3.6000 1.1312 3.8000 1.1317 4.0000 1.1323 4.2000 1.1339 4.4000 1.1397 4.6000 1.1444 4.8000 1.1483 5.0000 1.1509 5.2000 1.1539 5.4000 1.1619 5.6000 1.1778 5.8000 1.1936 6.0000 1.2072 6.2000 1.2194 6.4000 1.2299 6.6000 1.2385 6.8000 1.2451 7.0000 1.2499 7.2000 1.2534 7.4000 1.2552 7.6000 1.2548 7.8000 1.2519 8.0000 1.2467 8.2000 1.2391 8.4000 1.2292 8.6000 1.2157 8.8000 1.2071 9.0000 1.2043 9.2000 1.2031 9.4000 1.2034 9.6000 1.2044 9.8000 1.2034 10.0000 1.2027 10.2000 1.2053 10.4000 1.2172 10.6000 1.2344 10.8000 1.2530 11.0000 1.0000 11.2000 1.0000 11.4000 1.0000 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 I l l 11 1 it ! 1 1 1 1 1 13 1 1 1 1 1 7 lI i 1 1 a !I1 1 1 .4 !1 111 1 1 1 1 1 L= 1 111111111 1111 11 !111 lii........1.00 I j.1.1. 1 11 1 1 1 11 1 1 i I 1 111 1 1 1 1 1 1 1 1 1 11 1 1 ! 11 1 111 1 1 1 1 1 =0 BOTTOM I 4 5 6 7 8 CORE HEIGHT (FEET)9 10 1 12 TOP Figure 7 RAOC Summary of Max W(z) at 10000 MWD/MTU with HFP AFD Band of -12/+7 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Cycle 8 Revision 3 Page 12 of 19 COLR for Watts Bar Unit 1, Cycle 8 Height Max.(feel W(z)0.0000 1.0000 1.50 0.2000 1.0000 10.4000 1.0000 0.6000 1.0000 0.8000 1.0000 1.0000 1.0000 1.2000 1.2407 1.4000 1.2317 1.6000 1.2205 1.8000 1.2082 2.0000 1.1954 2.2000 1.1822 1.40 2.4000 1.1687 2.6000 1.1549-i --2.8000 1.1429 3.0000 1.1369-----,3.2000 1.1366 3.4000 1.1380 3.6000 1.1410 3.8000 1.1467 4.0000 1.1528 4.2000 1.1578 1.30 ---4.4000 1.1619 1.30 4.6000 1.1648 4.8000 1.1687 5.0000 1.1719----5.2000 1.1787 5.4000 1.1950 5.6000 1.2090 5.8000 1.2208 z l6.0000 1.2312+6.2000 1.2397 6.4000 1.2462 1.20 A 1 6.6000 1.2507 6.8000 1.2529 7.0000 1.2538 7.2000 1.2537 7.4000 1.2512 7.6000 1.2465 7.8000 1.2395 8.0000 1.2301 8.2000 1.2187---: 8.4000 1.2051 8.6000 1.1882 1.10 8.8000 1.1814 9.0000 1.1796 9.2000 1.1760 9.4000 1.1808 9.6000 1.1885 9.8000 1.1965 10.0000 1.2037 10.2000 1.2101&#xfd;F- 10.4000 1.2157 1 1 1 1 !10.6000 1.2202 1 .0010.8000 1.2224 1.00 r L 11.0000 1.0000 0 1 2 3 4 5 6 7 8 9 10 11 12 11.2000 1.0000 BOTTOM TOP 11.4000 1.0000 CORE HEIGHT (FEET) 11.6000 1.0000 I 1.8000 1.0000 12.0000 1.0000 Figure 8 RAOC Summary of Max W(z) at 14000 MWD/MTU with HFP AFD Band of -12/+7 %(Top and Bottom 10% Excluded)Unit 1 Cycle 8 WATTS BAR Page 13 of 19 Revision 3 COLR for Watts Bar Unit 1, Cycle 8 Table A.1 FQw(Z) Penalty Factor Core Burnup (MWD/MTU)All burnups FQW(Z)Penalty Factor 1.0200 Note: 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 FQw(Z) is expected to increase per 31 Effective Full Power Days (EFPD) starting from the burnup at which the FQw(Z)was determined.
2.4.5 FQw(Z)   Penalty Factor The FQW(Z) penalty factor is provided in Table A. 1.
Unit 1 WATTS BAR Cycle 8 Revision 3 Page 14 of 19 COLR for Watts Bar Unit 1, Cycle 8 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank 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 98 100 100 102 102 104 104 106 106 108 108 110 110 112 112 114 114 116 116 118 118 120 120 122 122 124 124 126 126 128 128 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 8 Revision 3 Page 15 of 19 COLR for Watts Bar Unit 1, Cycle 8 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 1150 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 92 222 222 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 10 268 140 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 BARPae1of9 Cycle 8 Revision 3 Page 16 of 19 COLR for Watts Bar Unit 1, Cycle 8 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 1174 46 1 304 176 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 A Bank B Bank C Bank D Bank 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 8 394 138 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 WATTS BARPae1of9 Cycle Revision 8 3 Page 17 of 19 COLR for Watts Bar Unit 1, Cycle 8 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Overlap Counter (steps)444 188 60 446 190 62 448 192 64 450 1194 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 A Bank B Bank C Bank D Bank 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 1 WATTS BARPae1of9 Cycle 8 Revision 3 Page 18 of 19 COLR for Watts Bar Unit 1, Cycle 8 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Overlap Counter (steps)592 208 594 210 596 212 598 214 600 216 602 218 604 220 606 222 608 224 610 226 612 228 614 230 616 232 This information is provided in 2 step increments.
Unit 1                                                                               Cycle 8 WATTS BAR                                 Page 4 of 19                           Revision 3
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.
COLR for Watts Bar Unit 1, Cycle 8 2.5   NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR                   - FAHN (LCO 3.2.2)
The Table indicates a maximum step of 232 to be consistent with 2 step increments.
FAHlN <- FAHlRTP * ( 1 + PF * (1-P))
Unit 1 WATTS BAR Cycle 8 Revision 3 Page 19 of 19}}
where P = Thermal Power / Rated Thermal Power FAH RTP = 1.65 for RFA-2 fuel, and PF       = 0.3 2.6   AXIAL FLUX DIFFERENCE -AFD (LCO 3.2.3) 2.6.1 The AFD limits for Cycle 8 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 8.
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 8.
Unit 1                                                                         Cycle 8 WATTS BAR                                     Page 5 of 19                   Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 250 (0l074, 231)                                (0.632, 231) 231 225 (0. 048, 225) 1                            (0.606, 225)
                                                                  .    .  .
(0.0, 214) 200 (1.0, 187)
    <    175 I-C0 150
: a.                                                                   . .         I
                                                                  . .
U)
I--
0~
125 (I-0                                                            . .0i ..
z',.                                        OF:                      :
100 0
a-75 0
0&#xfd; 50 (0. 8 6)018,)-
25 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 _ 225 and < 231 steps withdrawn.
Unit 1                                                                                             Cycle 8 WATTS BAR                                       Page 6 of 19                                 Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 1.2 1.1 1.0 0.9 0.8
(.
0 0.7 Core Height   K(Z) 0 0.6 0.000     1.000 N                                          6.000     1.000 Z                                        12.000     0.9256 0.5 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 8 WATTS BAR                           Page 7 of 19                     Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 120 110 100 90 80 a-F0   70 I-   60 01 n0 50 0
40 30 20 10 0
            -50 -40    -30   -20    -10       0       10 20 30      40    50 Flux Difference (AI) %
Figure 3 Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC)
Unit 1                                                                       Cycle 8 WATTS BAR                               Page 8 of 19                     Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 Height Max.
(feet) W(z) 0.0000 1.0000 1.50                                                                                                                                        0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 0.8000 1.0000
              ! i I i i I i             I   I I I I I i II     I I       I     II I   I I I         II I I Ii    I I II !     I I I I     I 1.0000 1.0000 1.2000 1.4289 1.4000 1.4092 1.6000 1.3863 1.8000 1.3613 2.0000 1.3348 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 2.2000 1.3075 1.40                                                                                                                                        2.4000 1.2793 2.6000 1.2506 2.8000 1.2279 3.0000 1.2080 i I I I i      i    IP !        !      I I ! I I!    I i I     I !         I II          I! i iI I Ii I         I I !!       I r    3.2000 1.1925 3.4000 1.1863 3.6000 1.1836 3.8000 1.1807 4.0000 1.1772 iI      ! iIL            !, AII I iII            I iIiI I iiii        I !LI        II        I     I   I         !        i ii 4.2000 1.1732 4.4000 1.1686 1.30                                                                                                                                        4.6000 1.1634 4.8000 1.1575 5.0000 1.1512 i I   I i    i!            I I I I I I       I I I I        I ! I I I I Ii I      ! I Ii          i       ii            - &#xfd;       5.2000 1.1438 5.4000 1.1362 5.6000 1.1364 5.8000 1.1443
              !ii    LII        i i'i        I LiI    i i    ii I i i      i i i  I iI i    I      I      I    II      II iiiii  I II        II    6.0000 1.1538 6.2000 1.1614 6.4000 1.1681 1.20                                                                                                                                        6.6000 1.1735 6.8000 1.1775 7.0000 1.1800 i i  i i !    i i i i i i i i        i i- a i i i i i  ! i j i i i 6 It,14'1111        i i i i i i i ! i i i ! i i ! i I 7.2000 1.1811 7.4000 1.1816 7.6000 1.1807 7.8000 1.1782 8.0000 1.1739 11111111 1 1 1 1 1 1 1 1 1 1 1 1 1 111111                                                                      8.2000 1.1678 8.4000 1.1599 8.6000 1.1495 1.10                                                                                                                                        8.8000 1.1409 9.0000 1.1390
              !I  i  i i i i !I            I!    I I!    I I    I IL I        II  I I! i I II    I!iII      I !I        !! II        i i i  !! I    9.2000 1.1417 9.4000 1.1411 9.6000 1.1425 9.8000 1.1436 10.0000 1.1448 10.2000 1.1492 10.4000 1.1551 10.6000 1.1599 10.8000 1.1628 0                                                                                                                                    11.0000 1.0000 f            2          3          4      5          6        7            8           9        10        11      12  11.2000 1.0000 BOTTOM                                                                                                                            TOP 11.4000 1.0000 CORE HEIGHT (FEET)                                                                          11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 Figure 4 RAOC Summary of Max W(z) at 150 MWD/MTU with HFP AFD Band of -12/+7 %
(Top and Bottom 10% Excluded)
Unit 1                                                                                                                                                     Cycle 8 WATTS BAR                                                                Page 9 of 19                                                                Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 Height    Max.
(feet)  W(z) 0.0000 1.0000 1.50                                                                                                          0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 0.8000 1.0000 1.0000 1.0000 iii! i i     i i I     I i i   I I i i ! ! i Ii Ii i i     !          I iI I! i i i        I I Ii            Iii I   1.2000 1.4000 1.4122 1.3929 1.6000  1.3705 1.8000  1.3459 2.0000  1.3200 2.2000  1.2930 1,40                                                                                                          2.4000  1.2656 2.6000  1.2381 2.8000  1.2095 3.0000  1.1880 3.2000  1.1763 I I   I I I I   I I I  I I I I I I   II         I IIII    I II I I       I I    II I I    IIIII      3.4000  1.1702 3.6000  1.1676 3.8000  1.1653 4.0000  1.1625 4.2000  1.1592 1,30  !111!111!111!111!1111ill!lll!lll!lll!lll!lll!lm                                                        4.4000 4.6000 1.1554 1.1511 4.8000  1.1462 5.0000  1.1409 I!       Il~            II II            II I III                Ill III I               I   5.2000 5.4000 5.6000 1.1345 1.1280 1.1290 5.8000  1.1397 6.0000  1.1532 6.2000  1.1644
                .....[.      ...... ..I . ..            i i . .. .. . .. . ..                    .....              6.4000 6.6000 1.1748 1.1838 1,20                                                                                                          6.8000  1.1914 7.0000  1.1974 7.2000  1.2018 7.4000  1.2044 11  ; 1 1 1 1 1 1 1 1 1 1 1 1 1 + A 1 1 1 i 1 1 1-4 1 1 1 1 1 1 1 1 1 i T    1 1 1 1 1 1 1 1 1 1 1 '  7.6000  1.2052 7.8000  1.2040 8.0000 1.2007 8.2000 1.1953 II    II      III      I  I  II  I  III    III    I  I liii      CIII III I          III  II    8.4000 1.1877 8.6000 1.1776 110                                                                                                          8.8000 1.1675 9.0000 1.1642 I  i !I    I  !I i !    I II! i ! I      I      II    ii i i i Ii Ii Ii ! i    I iII    ;II 9.2000  1.1691 9.4000  1.1735 9.6000 1.1753 9.8000 1.1756 10.0000   1.1785 10.2000   1.1850 1.1892 111111                II II            111111          11111 III                                      10.4000 10.6000 10.8000 1.1929 1.1942 1.BoTo                                                                                                      11.0000  1.0000 3        4      5          6    7        8        9       10      1      12  11.2000   1.0000 BOTTOM                                                                                                TOP 11.4000   1.0000 CORE HEIGHT (FEET)                                                        11.6000   1.0000 11.8000   1.0000 12.0000  1.0000 Figure 5 RAOC Summary of Max W(z) at 2000 MWD/MTU with HFP AFD Band of -12/+7 %
(Top and Bottom 10% Excluded)
Unit 1                                                                                                                       Cycle 8 WATTS BAR                                                Page 10 of 19                                                  Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 Heioht Max.
(f*e    W(z) 0.0000 1.0000 1.50                                                                                                            0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 0.8000 1.0000 i  i i i i i i i  I  i i i      i Ii      I I    iiiiii          ii        i      i ii              1.0000 1.0000 1.2000 1.3388 1.4000 1.3226 1.6000 1.3035 1.8000 1.2826 2.0000 1.2603 2.2000 1.2378 1.40  III                                                                                                      2.4000 1.2168 2.6000 1.1980 2.8000 1.1795 3.0000 1.1606 i ii i i i i i    i i i  I    i    i i Iii            I II  II i            iii    i      t-        3.2000 1.1467 3.4000 1.1423 3.6000 1.1413 3.8000 1.1403
                          ''I I I    I I I    I I  I    III        IIIIII    II I          I II II      I            4.0000 1.1389 4.2000 1.1372 4.4000 1.1352 1.30                                                                                                            4.6000 1.1327 4.8000 1.1298
                = I[ M      IFIl      11I 1!1111 11 111                        !1i1!i1r r r                      I  5.0000 1.1266 5.2000 1.1226 5.4000 1.1216 5.6000 1.1324 5.8000 1.1447 6.0000 1.1546 6.2000 1.1640 II I              II~ 111111111                    II      111111111                11111        II    6.4000 1.1722 6.6000 1.1790 1.20                                                                                                            6.8000 1.1846 7.0000 1.1885 7.2000 1.1911 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 IN i i i i i i i i, I is i i i P i i i i 7.4000 1.1933 7.6000 1.1938 7.8000 1.1925 8.0000 1.1895 i i    i i i i i i  i i I i i i Ii i  '- ? i i ill I' i i i i i i i    i i        i Ii        II        I  8.2000 1.1843 8.4000 1.1772 8.6000 1.1725 1.10                                                                                                           8.8000 1.1695 I I=      9.0000 1.1671 1111111111111 11111111                        1 11 1 11 1 11 1 11 1                                      9.2000 1.1635 9.4000 1.1581 9.6000 1.1636 9.8000 1.1720 10.0000 1.1779 10.2000 1.1830
:1 I      I II I I     I I I I   I II I I I I     I   II  I   II            II      I   I I II I I I 10.4000 1.1864 10.6000 1.1902 10.8000 1.1923 1.00 1 jj.I                                                                                                    11.0000 1.0000 0
BOTTOM      f        2      3        4      5          6    7      8          9      10      11    12 TOP 11.2000 1.0000 11.4000 1.0000 CORE HEIGHT (FEET)                                                        11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 Figure 6 RAOC Summary of Max W(z) at 4000 MWD/MTU with HFP AFD Band of -12/+7 %
(Top and Bottom 10% Excluded)
Unit 1                                                                                                                           Cycle 8 WATTS BAR                                                          Page 11 of 19                                            Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 Height Max.
(feeD W(z) 0.0000 1.0000 1.50                                                                                                    0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 111 111i11.1 1111 1 11111 1 1 11 1 1 1                                                           0.8000 1.0000 1.0000 1.0000 1.2000 1.2433 1.4000 1.2346 1.6000 1.2237 III            1.8000 1.2116 2.0000 1.1988 2.2000 1.1856 1.40                                                                                                    2.4000 1.1721
                                  !ill 1!111111 M! 1111 ill 11111                                            2.6000 1.1584 2.8000 1.1443 3.0000 1.1328 3.2000 1.1289 3.4000 1.1301 i
                  ~ ~ ~ii;;iiiii    i 1 i1  i1    iii![ i  I    I    I  I  [  I  I  C !1 .1 I  11 I .11I 1    3.6000 1.1312 3.8000 1.1317 4.0000 1.1323 4.2000 1.1339 4.4000 1.1397 1.30                                                                                                    4.6000 1.1444 0 i 1 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ! 1 1 1 ! 1 1 1 ! 1 1 4.8000 1.1483 5.0000 1.1509 5.2000 1.1539 5.4000 1.1619 5.6000 1.1778 5.8000 1.1936
            ,I I I, I I,1        111 1111111111 11.              1"11 111 .,! II1                  I        6.0000 1.2072 6.2000 1.2194 6.4000 1.2299 6.6000 1.2385 1.20 I l l 11   1  it !1 1 1 1 1 13 1 1 1 1 17                                                        6.8000 1.2451 7.0000 1.2499 7.2000 1.2534 7.4000 1.2552 lI1 i 1 a !I1 1 1.4 !1 111 1 1 1 1 1                                                              7.6000 1.2548 7.8000 1.2519 8.0000 1.2467 8.2000 1.2391 8.4000 1.2292 8.6000 1.2157 1.10        L= 1              111111111            11lii1111                  !111                    8.8000 1.2071 9.0000 1.2043 9.2000 1.2031 9.4000 1.2034 9.6000 1.2044 9.8000 1.2034
                                                                                          ........            10.0000 1.2027 10.2000 1.2053 10.4000 1.2172 10.6000 1.2344 10.8000 1.2530 1.00  Ij.1.1. 111 11111 11iI1111 11111111111 11!11 1111 11111=                                        11.0000 1.0000 0      I                      4        5      6          7  8        9    10      1     12  11.2000 1.0000 BOTTOM                                                                                        TOP 11.4000 1.0000 CORE HEIGHT (FEET)                                                  11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 Figure 7 RAOC Summary of Max W(z) at 10000 MWD/MTU with HFP AFD Band of -12/+7 %
(Top and Bottom 10% Excluded)
Unit 1                                                                                                                     Cycle 8 WATTS BAR                                                   Page 12 of 19                                           Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 Height      Max.
(feel    W(z) 0.0000 1.0000 1.50                        10.4000                                            0.2000 1.0000 1.0000 0.6000 1.0000 0.8000 1.0000 1.0000 1.0000 1.2000 1.2407 1.4000 1.2317 1.6000 1.2205 1.8000 1.2082 2.0000 1.1954 2.2000 1.1822 1.40                                                                            2.4000 1.1687 2.6000 1.1549
                                                                        -i--          2.8000 1.1429 3.0000 1.1369
                                                      -----  ,3.2000                          1.1366 3.4000 1.1380 3.6000 1.1410 3.8000 1.1467 4.0000 1.1528 4.2000 1.1578 1.30                  -      -    -4.4000                                  1.1619 1.30                                                                4.6000 1.1648 4.8000 1.1687 5.0000 1.1719
                                                                              ----    5.2000 1.1787 5.4000 1.1950 5.6000 1.2090 5.8000 1.2208 z            l6.0000                                                        1.2312
                            +6.2000                                                            1.2397 6.4000 1.2462 1.20                                                            A1              6.6000 1.2507 6.8000 1.2529 7.0000 1.2538 7.2000 1.2537 7.4000 1.2512 7.6000 1.2465 7.8000 1.2395 8.0000 1.2301 8.2000 1.2187
                                                                                --- :  8.4000 1.2051 8.6000 1.1882 1.10                                                                            8.8000 1.1814 9.0000 1.1796 9.2000 1.1760 9.4000 1.1808 9.6000 1.1885 9.8000 1.1965 10.0000 1.2037 10.2000 1.2101
                              &#xfd;F-                                                    10.4000 1.2157 111        !10.6000                                                           1.2202 1.00  r    *a-1L      .0010.8000                                               11.0000 1.2224 1.0000 0    1     2    3      4    5    6  7      8    9    10    11  12  11.2000 1.0000 BOTTOM                                                                  TOP 11.4000 1.0000 CORE HEIGHT (FEET)                                  I11.6000 1.8000 1.0000 1.0000 12.0000 1.0000 Figure 8 RAOC Summary of Max W(z) at 14000 MWD/MTU with HFP AFD Band of -12/+7 %
(Top and Bottom 10% Excluded)
Unit 1                                                                                             Cycle 8 WATTS BAR                                      Page 13 of 19                                  Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 Table A.1 FQw(Z) Penalty Factor Core          FQW(Z)
Burnup          Penalty (MWD/MTU)        Factor All burnups      1.0200 Note:
: 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 FQw(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 8 WATTS BAR                              Page 14 of 19                      Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 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) 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    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 8 WATTS BAR                            Page 15 of 19                      Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 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    1150  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                              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            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 8 WATTS BARPae1of9                    Page 16 of 19                       Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 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    1174          46    1                 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                    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 8 WATTS BARPae1of9                      Page 17 of 19                        Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 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    1194                  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 1                                                                     Cycle 8 WATTS BARPae1of9                    Page 18 of 19                      Revision 3
 
COLR for Watts Bar Unit 1, Cycle 8 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                                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 *231 steps withdrawn. The Table indicates a maximum step of 232 to be consistent with 2 step increments.
Unit 1                                                                      Cycle 8 WATTS BAR                              Page 19 of 19                      Revision 3}}

Revision as of 11:10, 23 November 2019

Core Operating Limits Report for Cycle 8, Revision 3
ML070260163
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 01/22/2007
From: James Smith
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML070260163 (22)
v • d • e


Text

Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 JAN22 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 1 - CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 8, REVISION 3 The purpose of this letter is to provide Revision 3 of the Cycle 8 COLR in accordance with WBN Technical Specification 5.9.5.d. Revision 3 updates the axial flux difference limits and was in effect as of January 19, 2007.

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, J. D. Smith Manager, Site Licensing and Industry Affairs (Acting)

Enclosure:

Watts Bar Nuclear Plant Unit 1, Cycle 8 Core Operating Limits Report, Revision 3 cc: See Page 2 Prnted on recycled paper

U.S. Nuclear Regulatory Commission Page 2 JAN 2 2 2007 Enclosure cc (Enclosure):

NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Mr. B. T. Moroney, 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 1 Cycle 8 Core Operating Limits Report, Revision 3

COLR for Watts Bar Unit 1, Cycle 8 QA Record L36 070117 805 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 8 CORE OPERATING LIMITS REPORT Revision 3 January 2007 Prepared by:

Nuclear Fuel / #1 Date Date Reviewed bI&

' /I-/7-67 Manager, Ntýýar Fuel Design Date

/-/?- 0 7 Date Approved-ky\J,\

I I r --

POC

    • i . Da e / I't POROCha rj n Date Chairs/ (1(1(*07 Plant Manager / o Date Date of PORC PORC Meeting Affected Revision Approval Number Pages Reason for Revision 0 N/A N/A N/A Not issued i N/A N/A 1, 9-13 Updated W(z) values, not issued 2 11/9/06 4178 3 Clarified text in 2.3.1 3 4IAI1q2* 1 8-13 Increased postive AFD limit Unit I Cycle 8 WATTS BAR Page 1 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit 1 Cycle 8 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 (FQ(Z))

3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (FAHN) 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 8 WATTS BAR Page 2 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 2.1 MODERATOR TEMPERATURE COEFFICIENT - MTC (LCO 3.1.4) 2.1.1 The MTC limits are:

The BOL/ARO/HZP - MTC shall be less positive than or equal to 0 Ak/k/IF (upper limit). With the measured BOL/ARO/HZP - MTC more positive than

-0.20 x 10-5 Ak/k/°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 EOL/ARO/RTP - MTC shall be less negative than or equal to

-4.5 x 10-4 Ak/k/°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 10-4 Ak/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 10-4 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 are fully withdrawn or 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 8 WATTS BAR Page 3 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 2.4 HEAT FLUX HOT CHANNEL FACTOR - FQ(Z) (LCO 3.2.1)

FQ(Z) _ [CFQ/P]

  • 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) = 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 8. The figures 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 8 WATTS BAR Page 4 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 2.5 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR - FAHN (LCO 3.2.2)

FAHlN <- FAHlRTP * ( 1 + PF * (1-P))

where P = Thermal Power / Rated Thermal Power FAH RTP = 1.65 for RFA-2 fuel, and PF = 0.3 2.6 AXIAL FLUX DIFFERENCE -AFD (LCO 3.2.3) 2.6.1 The AFD limits for Cycle 8 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 8.

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 8.

Unit 1 Cycle 8 WATTS BAR Page 5 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 250 (0l074, 231) (0.632, 231) 231 225 (0. 048, 225) 1 (0.606, 225)

. . .

(0.0, 214) 200 (1.0, 187)

< 175 I-C0 150

a. . . I

. .

U)

I--

0~

125 (I-0 . .0i ..

z',. OF:  :

100 0

a-75 0

0ý 50 (0. 8 6)018,)-

25 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 _ 225 and < 231 steps withdrawn.

Unit 1 Cycle 8 WATTS BAR Page 6 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 1.2 1.1 1.0 0.9 0.8

(.

0 0.7 Core Height K(Z) 0 0.6 0.000 1.000 N 6.000 1.000 Z 12.000 0.9256 0.5 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 8 WATTS BAR Page 7 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 120 110 100 90 80 a-F0 70 I- 60 01 n0 50 0

40 30 20 10 0

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

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

Unit 1 Cycle 8 WATTS BAR Page 8 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 Height Max.

(feet) W(z) 0.0000 1.0000 1.50 0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 0.8000 1.0000

! i I i i I i I I I I I I i II I I I II I I I I II I I Ii I I II ! I I I I I 1.0000 1.0000 1.2000 1.4289 1.4000 1.4092 1.6000 1.3863 1.8000 1.3613 2.0000 1.3348 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 2.2000 1.3075 1.40 2.4000 1.2793 2.6000 1.2506 2.8000 1.2279 3.0000 1.2080 i I I I i i IP !  ! I I ! I I! I i I I ! I II I! i iI I Ii I I I !! I r 3.2000 1.1925 3.4000 1.1863 3.6000 1.1836 3.8000 1.1807 4.0000 1.1772 iI  ! iIL  !, AII I iII I iIiI I iiii I !LI II I I I  ! i ii 4.2000 1.1732 4.4000 1.1686 1.30 4.6000 1.1634 4.8000 1.1575 5.0000 1.1512 i I I i i! I I I I I I I I I I I ! I I I I Ii I  ! I Ii i ii - ý 5.2000 1.1438 5.4000 1.1362 5.6000 1.1364 5.8000 1.1443

!ii LII i i'i I LiI i i ii I i i i i i I iI i I I I II II iiiii I II II 6.0000 1.1538 6.2000 1.1614 6.4000 1.1681 1.20 6.6000 1.1735 6.8000 1.1775 7.0000 1.1800 i i i i ! i i i i i i i i i i- a i i i i i  ! i j i i i 6 It,14'1111 i i i i i i i ! i i i ! i i ! i I 7.2000 1.1811 7.4000 1.1816 7.6000 1.1807 7.8000 1.1782 8.0000 1.1739 11111111 1 1 1 1 1 1 1 1 1 1 1 1 1 111111 8.2000 1.1678 8.4000 1.1599 8.6000 1.1495 1.10 8.8000 1.1409 9.0000 1.1390

!I i i i i i !I I! I I! I I I IL I II I I! i I II I!iII I !I  !! II i i i  !! I 9.2000 1.1417 9.4000 1.1411 9.6000 1.1425 9.8000 1.1436 10.0000 1.1448 10.2000 1.1492 10.4000 1.1551 10.6000 1.1599 10.8000 1.1628 0 11.0000 1.0000 f 2 3 4 5 6 7 8 9 10 11 12 11.2000 1.0000 BOTTOM TOP 11.4000 1.0000 CORE HEIGHT (FEET) 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 Figure 4 RAOC Summary of Max W(z) at 150 MWD/MTU with HFP AFD Band of -12/+7 %

(Top and Bottom 10% Excluded)

Unit 1 Cycle 8 WATTS BAR Page 9 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 Height Max.

(feet) W(z) 0.0000 1.0000 1.50 0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 0.8000 1.0000 1.0000 1.0000 iii! i i i i I I i i I I i i ! ! i Ii Ii i i  ! I iI I! i i i I I Ii Iii I 1.2000 1.4000 1.4122 1.3929 1.6000 1.3705 1.8000 1.3459 2.0000 1.3200 2.2000 1.2930 1,40 2.4000 1.2656 2.6000 1.2381 2.8000 1.2095 3.0000 1.1880 3.2000 1.1763 I I I I I I I I I I I I I I I II I IIII I II I I I I II I I IIIII 3.4000 1.1702 3.6000 1.1676 3.8000 1.1653 4.0000 1.1625 4.2000 1.1592 1,30 !111!111!111!111!1111ill!lll!lll!lll!lll!lll!lm 4.4000 4.6000 1.1554 1.1511 4.8000 1.1462 5.0000 1.1409 I! Il~ II II II I III Ill III I I 5.2000 5.4000 5.6000 1.1345 1.1280 1.1290 5.8000 1.1397 6.0000 1.1532 6.2000 1.1644

.....[. ...... ..I . .. i i . .. .. . .. . .. ..... 6.4000 6.6000 1.1748 1.1838 1,20 6.8000 1.1914 7.0000 1.1974 7.2000 1.2018 7.4000 1.2044 11  ; 1 1 1 1 1 1 1 1 1 1 1 1 1 + A 1 1 1 i 1 1 1-4 1 1 1 1 1 1 1 1 1 i T 1 1 1 1 1 1 1 1 1 1 1 ' 7.6000 1.2052 7.8000 1.2040 8.0000 1.2007 8.2000 1.1953 II II III I I II I III III I I liii CIII III I III II 8.4000 1.1877 8.6000 1.1776 110 8.8000 1.1675 9.0000 1.1642 I i !I I !I i ! I II! i ! I I II ii i i i Ii Ii Ii ! i I iII ;II 9.2000 1.1691 9.4000 1.1735 9.6000 1.1753 9.8000 1.1756 10.0000 1.1785 10.2000 1.1850 1.1892 111111 II II 111111 11111 III 10.4000 10.6000 10.8000 1.1929 1.1942 1.BoTo 11.0000 1.0000 3 4 5 6 7 8 9 10 1 12 11.2000 1.0000 BOTTOM TOP 11.4000 1.0000 CORE HEIGHT (FEET) 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 Figure 5 RAOC Summary of Max W(z) at 2000 MWD/MTU with HFP AFD Band of -12/+7 %

(Top and Bottom 10% Excluded)

Unit 1 Cycle 8 WATTS BAR Page 10 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 Heioht Max.

(f*e W(z) 0.0000 1.0000 1.50 0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 0.8000 1.0000 i i i i i i i i I i i i i Ii I I iiiiii ii i i ii 1.0000 1.0000 1.2000 1.3388 1.4000 1.3226 1.6000 1.3035 1.8000 1.2826 2.0000 1.2603 2.2000 1.2378 1.40 III 2.4000 1.2168 2.6000 1.1980 2.8000 1.1795 3.0000 1.1606 i ii i i i i i i i i I i i i Iii I II II i iii i t- 3.2000 1.1467 3.4000 1.1423 3.6000 1.1413 3.8000 1.1403

I I I I I I I I I III IIIIII II I I II II I 4.0000 1.1389 4.2000 1.1372 4.4000 1.1352 1.30 4.6000 1.1327 4.8000 1.1298

= I[ M IFIl 11I 1!1111 11 111 !1i1!i1r r r I 5.0000 1.1266 5.2000 1.1226 5.4000 1.1216 5.6000 1.1324 5.8000 1.1447 6.0000 1.1546 6.2000 1.1640 II I II~ 111111111 II 111111111 11111 II 6.4000 1.1722 6.6000 1.1790 1.20 6.8000 1.1846 7.0000 1.1885 7.2000 1.1911 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 IN i i i i i i i i, I is i i i P i i i i 7.4000 1.1933 7.6000 1.1938 7.8000 1.1925 8.0000 1.1895 i i i i i i i i i i I i i i Ii i '- ? i i ill I' i i i i i i i i i i Ii II I 8.2000 1.1843 8.4000 1.1772 8.6000 1.1725 1.10 8.8000 1.1695 I I= 9.0000 1.1671 1111111111111 11111111 1 11 1 11 1 11 1 11 1 9.2000 1.1635 9.4000 1.1581 9.6000 1.1636 9.8000 1.1720 10.0000 1.1779 10.2000 1.1830

1 I I II I I I I I I I II I I I I I II I II II I I I II I I I 10.4000 1.1864 10.6000 1.1902 10.8000 1.1923 1.00 1 jj.I 11.0000 1.0000 0

BOTTOM f 2 3 4 5 6 7 8 9 10 11 12 TOP 11.2000 1.0000 11.4000 1.0000 CORE HEIGHT (FEET) 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 Figure 6 RAOC Summary of Max W(z) at 4000 MWD/MTU with HFP AFD Band of -12/+7 %

(Top and Bottom 10% Excluded)

Unit 1 Cycle 8 WATTS BAR Page 11 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 Height Max.

(feeD W(z) 0.0000 1.0000 1.50 0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 111 111i11.1 1111 1 11111 1 1 11 1 1 1 0.8000 1.0000 1.0000 1.0000 1.2000 1.2433 1.4000 1.2346 1.6000 1.2237 III 1.8000 1.2116 2.0000 1.1988 2.2000 1.1856 1.40 2.4000 1.1721

!ill 1!111111 M! 1111 ill 11111 2.6000 1.1584 2.8000 1.1443 3.0000 1.1328 3.2000 1.1289 3.4000 1.1301 i

~ ~ ~ii;;iiiii i 1 i1 i1 iii![ i I I I I [ I I C !1 .1 I 11 I .11I 1 3.6000 1.1312 3.8000 1.1317 4.0000 1.1323 4.2000 1.1339 4.4000 1.1397 1.30 4.6000 1.1444 0 i 1 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ! 1 1 1 ! 1 1 1 ! 1 1 4.8000 1.1483 5.0000 1.1509 5.2000 1.1539 5.4000 1.1619 5.6000 1.1778 5.8000 1.1936

,I I I, I I,1 111 1111111111 11. 1"11 111 .,! II1 I 6.0000 1.2072 6.2000 1.2194 6.4000 1.2299 6.6000 1.2385 1.20 I l l 11 1 it !1 1 1 1 1 13 1 1 1 1 17 6.8000 1.2451 7.0000 1.2499 7.2000 1.2534 7.4000 1.2552 lI1 i 1 a !I1 1 1.4 !1 111 1 1 1 1 1 7.6000 1.2548 7.8000 1.2519 8.0000 1.2467 8.2000 1.2391 8.4000 1.2292 8.6000 1.2157 1.10 L= 1 111111111 11lii1111 !111 8.8000 1.2071 9.0000 1.2043 9.2000 1.2031 9.4000 1.2034 9.6000 1.2044 9.8000 1.2034

........ 10.0000 1.2027 10.2000 1.2053 10.4000 1.2172 10.6000 1.2344 10.8000 1.2530 1.00 Ij.1.1. 111 11111 11iI1111 11111111111 11!11 1111 11111= 11.0000 1.0000 0 I 4 5 6 7 8 9 10 1 12 11.2000 1.0000 BOTTOM TOP 11.4000 1.0000 CORE HEIGHT (FEET) 11.6000 1.0000 11.8000 1.0000 12.0000 1.0000 Figure 7 RAOC Summary of Max W(z) at 10000 MWD/MTU with HFP AFD Band of -12/+7 %

(Top and Bottom 10% Excluded)

Unit 1 Cycle 8 WATTS BAR Page 12 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 Height Max.

(feel W(z) 0.0000 1.0000 1.50 10.4000 0.2000 1.0000 1.0000 0.6000 1.0000 0.8000 1.0000 1.0000 1.0000 1.2000 1.2407 1.4000 1.2317 1.6000 1.2205 1.8000 1.2082 2.0000 1.1954 2.2000 1.1822 1.40 2.4000 1.1687 2.6000 1.1549

-i-- 2.8000 1.1429 3.0000 1.1369

,3.2000 1.1366 3.4000 1.1380 3.6000 1.1410 3.8000 1.1467 4.0000 1.1528 4.2000 1.1578 1.30 - - -4.4000 1.1619 1.30 4.6000 1.1648 4.8000 1.1687 5.0000 1.1719

5.2000 1.1787 5.4000 1.1950 5.6000 1.2090 5.8000 1.2208 z l6.0000 1.2312

+6.2000 1.2397 6.4000 1.2462 1.20 A1 6.6000 1.2507 6.8000 1.2529 7.0000 1.2538 7.2000 1.2537 7.4000 1.2512 7.6000 1.2465 7.8000 1.2395 8.0000 1.2301 8.2000 1.2187

--- : 8.4000 1.2051 8.6000 1.1882 1.10 8.8000 1.1814 9.0000 1.1796 9.2000 1.1760 9.4000 1.1808 9.6000 1.1885 9.8000 1.1965 10.0000 1.2037 10.2000 1.2101

ýF- 10.4000 1.2157 111 !10.6000 1.2202 1.00 r *a-1L .0010.8000 11.0000 1.2224 1.0000 0 1 2 3 4 5 6 7 8 9 10 11 12 11.2000 1.0000 BOTTOM TOP 11.4000 1.0000 CORE HEIGHT (FEET) I11.6000 1.8000 1.0000 1.0000 12.0000 1.0000 Figure 8 RAOC Summary of Max W(z) at 14000 MWD/MTU with HFP AFD Band of -12/+7 %

(Top and Bottom 10% Excluded)

Unit 1 Cycle 8 WATTS BAR Page 13 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 Table A.1 FQw(Z) Penalty Factor Core FQW(Z)

Burnup Penalty (MWD/MTU) Factor All burnups 1.0200 Note:

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 FQw(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 8 WATTS BAR Page 14 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 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) 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 46 118 118 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 8 WATTS BAR Page 15 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 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 1150 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 64 268 140 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 74 278 150 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 8 WATTS BARPae1of9 Page 16 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 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 1174 46 1 376 120 304 176 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 64 394 138 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 8 WATTS BARPae1of9 Page 17 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 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 1194 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 1 Cycle 8 WATTS BARPae1of9 Page 18 of 19 Revision 3

COLR for Watts Bar Unit 1, Cycle 8 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Overlap Counter (steps) 592 208 594 210 596 212 598 214 600 216 602 218 604 220 606 222 608 224 610 226 612 228 614 230 616 232 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 *231 steps withdrawn. The Table indicates a maximum step of 232 to be consistent with 2 step increments.

Unit 1 Cycle 8 WATTS BAR Page 19 of 19 Revision 3

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