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| number = ML062350165
| number = ML062350165
| issue date = 08/17/2006
| issue date = 08/17/2006
| title = Watts Bar, Unit 1 - Core Operating Limits Report (Colr) for Cycle 7, Revision 6
| title = Core Operating Limits Report (COLR) for Cycle 7, Revision 6
| author name = Pace P L
| author name = Pace P
| author affiliation = Tennessee Valley Authority
| author affiliation = Tennessee Valley Authority
| addressee name =  
| addressee name =  
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=Text=
=Text=
{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 AUG 1.7 2006 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 AUG 1.7 2006 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 7, REVISION 6 The purpose of this letter is to provide Revision 6 of the Cycle 7 COLR in accordance with WBN Technical Specification 5.9.5.d. Revision 6 revises the axial flux difference (AFD)limit and the W(z) values. This revision was effective as of August 10, 2006.There are no regulatory commitments associated with this submittal.
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 7, REVISION 6 The purpose of this letter                         is   to provide Revision 6 of the Cycle 7 COLR in accordance with WBN Technical Specification 5.9.5.d.           Revision 6 revises the axial flux difference (AFD) limit and the W(z) values.                           This revision was effective as of August 10, 2006.
If you have any questions concerning this letter, please contact me at (423) 365-1824.Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs  
There are no regulatory commitments associated with this submittal.           If you have any questions concerning this letter, please contact me at (423) 365-1824.
Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs


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


Watts Bar Nuclear Plant Unit 1, Cycle 7 Core Operating Limits Report, Revision 6 cc: See Page 2 Printed on rcycd pa U.S. Nuclear Regulatory Commission Page 2 AUG !17 2006 Enclosure cc (Enclosure):
Watts Bar Nuclear Plant Unit 1, Cycle 7 Core Operating Limits Report, Revision 6 cc: See Page 2 onrcycd pa Printed
NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Douglas V. Pickett, Senior Project Manager U.S. Nuclear Regulatory Commission MS 08G9a One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303 Enclosure Watts Bar Nuclear Plant Unit 1 Cycle 7 Core Operating Limits Report, Revision 6 COLR for Watta Bar Unit 1, Cycle 7 QA Record L36 060809 802 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 7 CORE OPERATING LIMITS REPORT Revision 6 August 2006 Prepared by:-Nuclear Fuel Design Date'Nuclear Fuel design Date Reviewed  Manager, Nucler/ I esign Date Reactor Engineering Supenor Date Approved by: PORC Chairman 7 Date Plant Manager ( Date Date of PORC PORC Meeting Affected Revision Approval Number Pages Reason for Revision 0 3111/05 4073 All Initial issue 1 3/18/05 4075- All Revised to remove cycle 7 restriction to mode 6 2 5/31/05 4089 1,9-12 Revised maximum W(z) values 3 9/19/05 4107 1, 9- 12 Revised maximum W(z) values 4 3/13/06 4127 1,10-12 Revised maximum W(z) values 5 6/28/06 4144 1,4,8,12 Revised AFD Limit and W(z)I values 6 1, 8,12 Revised AFD Limit and W(z)values Unit 1 WATTS BAR Cycle 7 Revision 6 Page I of 18 COLR for Watts Bar Unit 1, Cycle 7 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit I Cycle 7 has been prepared in accordance with the requirements of the Technical Specifications 5.9.5.The Technical Specifications affected by this report are listed below: 3.1.4 Moderator Temperature Coefficient (MTC)3.1.6 Shutdown Bank Insertion Limits 3.1.7 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor (FQ(Z))3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (Pal')!3.2.3 Axial Flux Difference (AFD)3.5.1 Accumulators


====3.5.4 Refueling====
U.S. Nuclear Regulatory Commission Page 2 AUG !17 2006 Enclosure cc (Enclosure):
NRC Resident Inspector Watts Bar Nuclear Plant 1260 Nuclear Plant Road Spring City, Tennessee 37381 Douglas V. Pickett, Senior Project Manager U.S. Nuclear Regulatory Commission MS 08G9a One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, Georgia 30303


Water Storage Tank (RWST)3.9.1 Boron Concentration Z.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed In section 1.0 are presented in the following subsections.
Enclosure Watts Bar Nuclear Plant Unit 1 Cycle 7 Core Operating Limits Report, Revision 6
These limits have been developed using the NRC approved methodologies specified in the Technical Specifications Section 5.9.5.The following abbreviations are used in this section: BOL -Beginning of Cycle Life ARO -- All Rods Out HZP -- Hot Zero Thermal Power EOL -End of Cycle Life RTP Rated Thermal Power Unit I Cycle 7 WATTS BAR Page 2 of 18 Revision I v COLR for Watts Bar Unit 1, Cycle 7 2.1 MODERATOR TEMPERATURE COEFFICIENT
-MTC (LCO 3.1.4)2.1.1 The MTC limits are: The BOLJAR1O/H-ZP
-MTC shall be less positive than or equal to 0 Ak/k/*F (upper limit). With the measured BOLJARO/HZP
-MTC more positive than-0.B0 x 10- 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/0 F (upper limit) for all times In core life.The EOIJARO/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 104 Ak/k/PF.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' 0'k/kIF.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===
COLR for Watta Bar Unit 1, Cycle 7 QA Record L36 060809 802 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 7 CORE OPERATING LIMITS REPORT Revision 6 August 2006 Prepared by:-
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.
Nuclear Fuel Design                                                        Date
Unit I Cycle 7 WATTS BAR Page 3 of 18 Revision I COLR for Watts Bar Unit 1, Cycle 7 2.4 HEAT FLUX HOT CHANNEL FACTOR -VQ(Z) (LCO 3.2.1)F(Z) !; [CFQ, / P* K(Z) for P >0.5 Fo(Z) S [CFQI 0.5]
'Nuclear Fuel design                                                        Date Reviewed by:/*S Manager, Nucler/      I esign                                            Date Reactor Engineering Supenor                                                Date Approved by:
* K(Z) for P 5 0.5 Where P %- Thermal Power/Rated Tharmal Power 2.4.1 CFQ-= 2.50 2.4.2 K(Z) is provided in Figure 2.2.4.3 Fe(Z) = FoQ(Z)* 1 .01s where: F 0 1 (ZT) is the measured valuc of F 0 (Z) obtaincd ior incote flux map msults and 1.0815 Is a factor that accounts for fuel manufacwri.g tolerances and flux map measurtement uncertainty.
PORC Chairman      7                                                       Date Plant Manager        (                                                    Date Date of       PORC PORC        Meeting    Affected Revision       Approval      Number      Pages      Reason for Revision 0        3111/05        4073          All      Initial issue 1         3/18/05        4075-        All      Revised to remove cycle 7 restriction to mode 6 2         5/31/05        4089      1,9-12      Revised    maximum W(z) values 3         9/19/05        4107      1, 9- 12    Revised    maximum W(z) values 4        3/13/06        4127      1,10-12      Revised    maximum W(z) values 5         6/28/06        4144      1,4,8,12      Revised    AFD Limit and W(z)
2.4.4 FcW(Z) -F(Z)
I values 6                                  1, 8,12      Revised AFD Limit and W(z) values Unit 1                                                                                Cycle 7 WATTS BAR                                Page I of 18                              Revision 6
* w(Z)where: W(Z) values are provided in Figures 4 through 7, only use W(7) values provided in Figure 7 for bwuups greater than 16,000 MWD/MTU. The Figures providc sufficicni inrotmation to determine W(Z) venus core height for all cycle burnups.2.4.5 Fow(Z) Penalty Factor The FJ 4 w(Z) penalty factor is providcd in Table A. 1.Unit I Cy^1c 7 WATfS BAR Page 4 of 18 Revison/5"&#xfd;/O COLR for Watts Bar Unit 1, Cycle 7 2.5 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR -Fan (LCO 3.2.2)FaN < Fain I + PF I (-P))where P = Thermal Power / Rated Thermal Power Famh = 1.65 for RFA-2 fuel, and FA = 1.62 for VANTAGE+IPERFORMANCE+
 
fuel PF = 0.3 2.6 AXIAL FLUX DIFFERENCE
COLR for Watts Bar Unit 1, Cycle 7 1.0    CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit I Cycle 7 has been prepared in accordance with the requirements of the Technical Specifications 5.9.5.
-AFD (LCO 3.2.3)2.6.1 The AFD itmits for Cycle 7 are provided in Figt re 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 (rPBARs) in the reactor core for Cycle 7.2.9 REFUELING WATER STORAGE TANK -RWST (LCO 3.5.4)2.9.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7.Unit I Cycle 7 WATTS BAR Page 5 of 18 Revision I lw COLR for Watts Bar Unit 1, Cycle 7 0 F-0I 0 0.Se 0 0 0 250 231 225 200 175 150 125 100 InImlI nIT (0.074,231) 1 (0.632,231) 11111~~~~
The Technical Specifications affected by this report are listed below:
ffJ~~~iIiii~
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))
IA I I .(0M8,25 (0.506, 225) 'H.11111111-11zl 11: Jillvr~i 111-1111 I I i ! i i 1==1 1 oil !!=7=11 I I I I in 1111111 fl (1.0. 1E i 11111111111 i iii iiiii MM-_,6 i iiiii.......... .........I I Nli 1112-1 iii... ............: i ' L.--!!3=F;j (0 6) 1 1 1 1 !M 75 50 25 I;:: :1.............................
3.2.2  Nuclear Enthalpy Rise Hot Channel Factor (Pal')!
S--&11 11 I I I I I-LA--L -FA 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.
3.2.3  Axial Flux Difference (AFD) 3.5.1  Accumulators 3.5.4 Refueling Water Storage Tank (RWST) 3.9.1  Boron Concentration Z.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.
Unit I WATTS BAR Cycle 7 Revision I Page 6 of 18 COLR for Watts Bar Unit 1, Cycle 7 10 0 LI 1.2 .. ...... ... .-1.1 1.0 ......---0.9 0.8 0.7 0.6 C- -H-ld.b0 is 0.000 1.000 6.000 1.000 12.000 0.9256 0.4 0.3 ----0.2 -...0.1 0 0 2 4 6 8 10 Core Height (feet)Figure Z K(Z) -Normalized F,(Z) as a Function of Core Height I!!Unit 1 WATTS BAR Cycle 7 Revision I Page 7 of 18 COLR for Watts Bar Unit 1, Cycle 7 U 0 w U (U a 120 110, 100 90 80 70 60 50 40 30 20 10 0: I ,: II.1 (-8. 100) I-- (10, 100 .....L .. .... I." .' "*' ..r ..---I --!........4
The following abbreviations are used in this section:
..... Acceptable Operation Unaeptable1
BOL  -    Beginning of Cycle Life ARO  --    All Rods Out HZP  --    Hot Zero Thermal Power EOL  -    End of Cycle Life RTP        Rated Thermal Power Unit I                                                                            Cycle 7 WATTS BAR                                Page 2 of 18                          Revision I v
~ ~etable..L ..~ ..Oer .... .ation.-... ....-( ,0 (24. 50)... .. .L ...II-50 30 10 0 10 Flux Difference
 
(&l) %I 20 30 40 50 Figure 3 Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC)Unit 1 WATTS BAR Page 8 of 18 Cycle 7 Revision/4-trvf COLR for Watts Bar Unit 1, Cycle 7.6 .40----------L 4 --- ----.20 ]UL111-- 1H 111F I I A LLUL Hasht (bet)0.0000 0.2000 0.4000 0.6000 0.8000 1.0000 2.2000 1.4000 1.6000 2.8000 2.0000 12000 2.4000 2.5000 3.0000 3.2000 3.4000 3.9000 8.8000 4.0000 4.2000 4.4000 4.6000 4.8O00 0.0000 6.2000 5.4000 3.60000 0.8000 O0000 6.2.000 6.4000 6.6O000 7.0000 7.2000 7.4000 7.6000 7.O000 8.0000 8P.200 8.8000 9,0000 9,2000 9.4000 9.6000 9,8000 1o.oooo 10.2000 10.4000 10.6000 10.8000 11.0000 11.2000 11.4000 11.0000 11.2000 12..0000 Cycle 7 WtI)1.0000 1,0000 1.0000 1.0000 1.0000 1.0000 1.0000 2.2512 1.2321 1.2167 1.1931 3.1793 1.1606 1.1410 1.1210 1.1104 1.1062 1019 1.1008 1.0998 1.1001 1.1030 1.1088 1.2132 1.1173 1.1206 1.1251 1.2549 1.1603 1.1648 1.1804 1.1972 1.2185 1.2283 1.2416 1.2531 1.262"/1.2708 1.27O8 1.276a 1.2765 1.2714 12,833 M.216 12402 1.2404 1.28481.2381 1.2446 1.2503 1.2541 3.0000 3.0000 2.0000 2.0000 1,0000 1.0000 11 11 111 11 1111 111 11 A 111 11 111 1..Is I I I I I ILLI IT IMIA JJ-U I I I ia.a 3 4 3 '7 a 1.0 11 .2 CORE HIZGHT (FEET)Figure 4 RAOC Summary of Max W(z) at 150 MWDIMTU with HFP AFD Band of -12/+6 %(Top and Bottom 10% Excluded)Unit 1 WATIS BAR Page 9 of 18 Revision 3 1 COLR for Watts Bar Unit 1, Cycle 7 ,L. sU tEIttt 11 11111113-. .I IF I I I I I I I I I I I I I I I I I 1 1.40*1* IIE*IuI*I~
COLR for Watts Bar Unit 1, Cycle 7 2.1    MODERATOR TEMPERATURE COEFFICIENT - MTC (LCO 3.1.4) 2.1.1 The MTC limits are:
I umr 1 f 1 1 -JJ-U I 1 1 1 1 1 1-1 1 1.......---------------------
The BOLJAR1O/H-ZP - MTC shall be less positive than or equal to 0 Ak/k/*F (upper limit). With the measured BOLJARO/HZP - MTC more positive than
I -I I 1 11 11TI I I I I I I I I I-I I 1 13 ,,  I III 11 111 I II 11114 1 [ilIII N k..Helghtft)0.0000 0.2MOO 0.4000 0.800O 1.0000 1200D 1.4000 1.6000 1.8000 9-0000 2.4000 18000 2.8000 3.0000&40W0 3.8000 18S000 4.0000 4.2000 4.4000 4.8000 5.4000 5*4000..8000 8.0000&2000 6.40W 8.8000 68A000 7.0000 7.4000 7.401*7.600D 7.8000 6.0000 6.2000 8.4300 5.9000 9.0000 92000 9.4000 9.60o0 10.0o000 10.2000 10.4o000 10.0000 o0.8000 11.0000 11.2000 11.4000 11.8000 11.8000 It.0000 Max W(z)1.0000 1.0000 I'OODO 1.0000 1.000 1.1439 1.1319 1.1182 1.1033 1.008" 1.0722 1.0679 1.0425 1.0331 1.=G9 1.0304 1.0344 1.0387 1.OSW 1.07V" 1.1001 1.12SO 1.1463 1.,60" 1.1664 1.2104 1.2475 1.2040 12791 I -"W 1X61 1.3168 1.3241 1.3291 1.3316 1.3207 1.320-1.284 1.3W0 1..351B 1-63 1 I *3775 13600 1.4076 1.421 5 1.4340 1.4441 1.W000 1.0000 1,0000 tom00 1.0000 1.0=0 1.10 3: -------------------
                  -0.B0 x 10- 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/ 0F (upper limit) for all times In core life.
31 iI H H ! H i I I I I I 1 11 1 1 1 1 1 11 111]H! i i I I 1 I1 11111 i 1 ii!-H::l... ..............................1111# 11 1 ! I lm l 11 1 1 1 11 1 1 1 N-9-,-II~lI~4~+H~4 1.00 poem" 1 1 11-11 1 11 1 1. 1. IM 1 1 I.1 2 3 13 5 6 7 U (FEET)10 .LU .L.j CORE IE IGHT Figure 5 RAOC Summary of Max W(z) at 3000 MWDIMTU with HFP AFD Band of -12/+6 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Cycle 7 Ravision 4 Page 10 of 18!!i I COLR for Watts Bar Unit 1, Cycle 7 1 1.50 1.40 1.30 1.20 1.10 s1o.if fill, 1113=13== IfTij ni .:I: .~..11111111111
The EOIJARO/RTP - MTC shall be less negative than or equal to
!!! 11! 11 !!!! 111 Lirn I I I I 1 111 1 111111 1111 1 11111 11 1 III[ It-L.UJIL111 11111 1_111 I JIM 1 ! 1111 1 1 1 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 171711 11 1 1 11 1 1 1 1 1 LJ I I 1 1-11'Illi IIf 11JL11111 11111 111I itif111114.111111 fill Jill0 111 111111 1111ft17111111 1111111 1111111 111 1=:1-I-mr;:7,7- z 7--;.j j j j j i , L- n -- = -.----.4L M1i:1 3M 13 11114.1111
                  -4.5 x 10*4 Ak/k/*F (lower limit).
!!! !!! il I Holght(ft)
2.1.2 The 300 ppm surveillance limit is:
Max W(z)o.00Oo 11M000 0.2000 1.0000 0.4000 1.0000 0.0000 1.0000 0.6000 1.oooo 1.0000 10000 1.2000 1.1684 1.4000 1.1576 1.80=0 1.1467 1.8000 1.1349 2.0000 1.1240 2000 1.1125 2.4000 1.1009 2.6000 1.0IM1 2.1000 1.0786 3.0000 I.071G 3.2000 1.0736 14000 1.0756 3.0000 1.0773 ISM00 1,0792 4.0000 1.0m29 4.2000 1.0661 4.40m0 1.0047 4.6000 1.1005 4.0000 1.1071 5. 0000 1.113t 5.2000 1,1216&4000 I.1300 5.OO00 1,1572 6.9000 1.1743 8.MO00 1,1890 6.2000 1.2042 6.4000 1.2163 6.W000 1.2269 6.9000 1.2356 7.0000 1.2425 7.2000 1.2486 7.4000 1.2632 7.0000 1.2w9 7.6000 12573 8.0000 1.2558 892000 12627&.4000 1.2480 8.0O00 1.2488 8.0000 1.2478 9.OOO 1.2611 9.2000 1.256N 9.4000 1.234 9.6000 1.2686 D.000 10.2670 10.0000 i.=087 10.2000 1.2677 10.4000 1.2669 10.6000 1.2aw 10.000 1.285 11.0000 1.0000 11,2000 1,o0000 11.4000 1.0000 11.4000 1.0000 11.J000 1,0o000 12.0000 t.omoo Cycle 7 Revision 4 r:z 111 I-Tt I I I 11111 1 M.1 1 111 112M I I I I I I I I I I I I I I I I J! 1111111 1111*ff I 11ji-111 111111 lit M3 I-i--A-&.A -.. I -- F I ram7 a .* ) I CORE EEIGRT (FEET)Figure 6 RAOC Summary of Max W(z) at 10000 MWDJMTU with HFP AFO Band of -12/+6 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Page 11 of 18 COLR for Watts Bar Unit 1, Cycle 7 1.501........ I ..... -... -...... 1 1t~ltWzjz.... I H Il Hill!11 Ill111111 MMi 1111111 111111 1.4I I 1.3011 rl 111111111 M 111111111111 111111 rwtiiiiii............I &#xfd; ........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 1.3795 1.3678 1.3543 1.3395 1.3232 1.3069 1.2876 1.2675 1.2466 1.2248 1.2105 1.2053 1.2007 1.1965 3.1916 1.1856 1.1790 1.1714 1.1639 1.1586 1.1552 1.1537 1.1540 1.1552 1.1558 1.1542 1.1523 1.1491 1.1441 1.1392 1.1331 1.1279 1.1215 1.1137 1.1060 1.0961 1.0866 1.0780 1.0781 1.0827 1.0839 1.0838 1.0877 1.0983 1.1183 1.1369 1.1575 1.1782 1.1957.1.0000 1.0000.1.0000 1.0000 1.0000 1.0000 I fl...-4--.--4-4 I iir E 1.16 1--11itt....0 , i-1 1 1 1 L lit=Iht J.-11Ud -2. 2 3 4 5 1 8 9 10 11 CORE HEIGHT (FEET)Figure 7 RAOC Summary of Max W(z) at 16000 MWD/MTU with HFP AFD Band of -8/+10 %(Top and Bottom 10% Excluded)Unit 1 WATTS BAR Cycle 7 Revision 6 Page 12 of 18 I COLR for Watts Bar Unit 1, Cycle. 7 Table A.1.Few(Z) Penalty Factor Core Burnup"MWDMFL All bunups FQWCL)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 FoWCZ) is expected to Increase per 31 Effective Full Power Days (EFPD) starting from the burnup at which the FQw(Z) was determined.
The measured 300 ppm /ARO/RTP-MTC should be less negative than or equal to
Unit 1 WATTS BAR Cycle 7 Revision 1 Page 13 of i8 COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Overlap Counter (steps)o 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 ABank BBank CBank DBank Overlap Counter (steps) _ _72 72 74 74 76 76 78 78 so so 82 82 84 84 86 86 88 88 90 _o 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 7 Revision I Page 14 of 18 COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band ABank B Bank CBank DBank Overlap Counter (3teps)144 144 16 146 146 18 148 148 20 150 150 22 152 152 24 154 154 26 156 156 28 158 158 30 160 160 32 162 162 34 164 164 36 166 166 38 168 168 40 170 170 42 172 172 44 174 174 46 176 176 48 178 178 50 180 180 52 182 182 54 184 184 56 186 186 5 .188 188 60 190 190 62 192 192 64 194 194 66 196 ING 68 198 198 70 200 200 72 20z 202 74 204 204 76 206 206 78 208 208 80 210 210 82 212 212 84 214 214 86 216 216 8 218 218 90 Band A Bank B 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 0 259 130 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 I WATTS BAR Cycle 7 Revision 1 Page 15 of 18 COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Overlap Counter 296 168 40 298 170 42 300 172 44 302 174 46 304 176 48 308 178 50 308 180 152 310 182 54 31Z 154 56 314 ISO 58 316 188 60 318 190 62 320 192 64 322 194 66 324 196 68 326 198 70 328 200 72 330 202 74 332 204 76 334 206 78 336 208 80 338 210 82 340 212 84 342 214 86 344 216 88 346 218 90 348 220 92 350 222 94 352 224 96 354 226 98 356 228 100 358 230 102 360 232 104 362 106 364 108 366 110 368 112 Band ABank BBank CBank DBank Overlap Counter (steps)370 114 372 116 374 118 376 120(378 122 380 124 38Z 126 384 128 0 386 130 2 388 132 4 390 134 6 392 136 8 394 138 10 396 140 12 398 3 142 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 BAR Cycle 7 Revision I Page 16 of 18  
                  -3.75 x 104 Ak/k/PF.
" *COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band ABank BBank CBank DBank Overlap Counter (Steps)444 188 60 446 190 62 448 192 64 450 194 68 452 196 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 95 482 226 98 484 228 100 486 230 102 488 232 104 400 106 492 108 494 110 496 112 498 114 500 116 502 118 504 120 506 122 508 124 510 126 512 128 514 130 516 132 Band ABank BBank CBank DBank Overlap Counter (steps)518 134 520 138 522 138 524 140 526 142 528 144 530 146 532 148 534 150 536 152 538 154 540 156 542 158 544 160 546 162 548 164 550 166 552 168 554 170 556 172 558 174 560 176 562 178 564 ..10 566 182 568 184 570 186 572 188 574 190 576 192 578 194 580 196 582 198 584 200 586 202 588 204 590 206 Unit I WATTS BAR Cycle 7 Revision I Page 17 of 18 4 COLR for Watts Bar Unit 1, Cycle,7 Table 1: Control Rod Overlap Band ABank BBank CBank DBank Overlap Counter (steps)592 208 594 210 506 212 598 214 600 216 602 218 604 220 606 222 608 224 610 226 612 228 614 230 616 232 This information is provided in 2 step increments.
2.1.3 The 60 ppm surveillance limit Is:
One step increments can be derived by interpolation.
The measured 60 ppm /ARO/RTP-MTC should be less negative than or equal to 0'k/kIF.
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.
                  -4.28 x 10' 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.
The Table indicates a maximum step of 232 to be consistent with 2 step increments.
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.
Unit 1 WATTS BAR Cycle 7 Revision I Page 18 of 18}}
2.3.2 Table 1 shows the control rod overlap positions.
Unit I                                                                            Cycle 7 WATTS BAR                                  Page 3 of 18                        Revision I
 
COLR for Watts Bar Unit 1, Cycle 7 2.4  HEAT FLUX HOT CHANNEL FACTOR - VQ(Z) (LCO 3.2.1)
F(Z) !; [CFQ,/ P* K(Z)         for P>0.5 Fo(Z) S [CFQI 0.5]
* K(Z)      for P 5 0.5 Where P %-Thermal Power/Rated Tharmal Power 2.4.1 CFQ-= 2.50 2.4.2 K(Z) is provided in Figure 2.
2.4.3 Fe(Z) = FoQ(Z)* 1.01s where: F01 (ZT)is the measured valuc of F0(Z) obtaincdior incote flux map msults and 1.0815 Is a factor that accounts for fuel manufacwri.g tolerances and flux map measurtement uncertainty.
2.4.4 FcW(Z)  - F(Z)
* w(Z) where: W(Z) values are provided in Figures 4 through 7, only use W(7) values provided in Figure 7 for bwuups greater than 16,000 MWD/MTU. The Figures providc sufficicni inrotmation to determine W(Z) venus core height for all cycle burnups.
2.4.5 Fow(Z) Penalty Factor The FJ4 w(Z) penalty factor is providcd in Table A. 1.
Unit I                                                                                     Cy^1c 7 WATfS BAR                                    Page 4 of 18                              Revison/5"
                                                                                                      &#xfd;/O
 
COLR for Watts Bar Unit 1, Cycle 7 2.5    NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR - Fan (LCO 3.2.2)
FaN < Fain        I + PF  (-P))
I where P = Thermal Power / Rated Thermal Power Famh    = 1.65 for RFA-2 fuel, and FA      = 1.62 for VANTAGE+IPERFORMANCE+ fuel PF      = 0.3 2.6    AXIAL FLUX DIFFERENCE - AFD (LCO 3.2.3) 2.6.1 The AFD itmits for Cycle 7 are provided in Figt re 3.
2.7    REFUELING BORON CONCENTRATION (LCO 3.9.1) 2.7.1 The refueling boron concentration shall be &#x17d; 2000 ppm.
2.8    ACCUMULATORS (LCO 3.5.1) 2.8.1 There are 240 tritium producing burnable absorber rods (rPBARs) in the reactor core for Cycle 7.
2.9    REFUELING WATER STORAGE TANK - RWST (LCO 3.5.4) 2.9.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7.
Unit I                                                                        Cycle 7 WATTS BAR                                    Page lw 5 of 18                  Revision I
 
COLR for Watts Bar Unit 1, Cycle 7 250 InImlI nIT 231 (0.074,231)                                                  1   (0.632,231) 225                                                        11111~~~~      (0.506, 225) 'H IAI I ffJ~~~iIiii~
i !i i (0M8,25
                                          .11111111-11zl 11:                            Jillvr~i  111-1111 II 200 1==1 1oil !!=7=11 flII(1.0.II1Ein 1111111 175                                              i                              11111111111 i                                  iii 150                    MM iiiii                -_,6 i
iiiii                ...................I 125                                                  I Nli 1112-1                                   iii 0                               ... . . . . . . . . . . . .
F-                          : i  '  L.--
0 0I                                                !!                                                3=
: 0. 100 Se F;j  (0  6) 1 0
0    75                                                                                            11  1 !M 0
I;:: :1.............................
50 S--&
25                                                                                                1111 I III 0  I-LA--L        -FA 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 I                                                                                                          Cycle 7 WATTS BAR                                          Page 6 of 18                                              Revision I
 
COLR for Watts Bar Unit 1, Cycle 7 1.2  .. ......         ...   .-
1.1 1.0       .     .   .   .       . .               -    -      -
0.9 0.8 10 0.7 0.6              -                            C-    H-ld.b0      is 0.000        1.000 6.000        1.000 0
LI                                                12.000          0.9256 0.4 0.3     ----
0.2      -...
0.1 0
0             2         4        6        8          10 Core Height (feet)
Figure Z K(Z) - Normalized F,(Z) as a Function of Core Height I
Unit 1                                                                            Cycle 7 WATTS BAR                                  Page 7 of 18                          Revision I
 
COLR for Watts Bar Unit 1, Cycle 7 120
:                                        I                            ,
110,                  :      II
                      . L... . . ...
                                                .1  (-8. 100) I--
I." .' "*'
(10, 100          .       .     .
100
: r.       .         -    -- I                  - -
90            !........4 .....                     Acceptable Operation 80        Unaeptable1                ~                                ~etable U
0
                . L      .                 ..~          ..                       ....           . Oeration 70 w
60 U
(U 50                                              -  ( ,0                        (24. 50) a 40
                                  ...   ..                                 .L .       .     .
30 II 20 10 I
0
              -50      -40            -30      -20      -10        0        10        20          30      40  50 Flux Difference (&l) %
Figure 3 Axial Flux Difference Acceptable Operation Limits as a Function of Rated Thermal Power (RAOC)
Unit 1                                                                                                           Cycle 7 WATTS BAR                                                Page 8 of 18                                          Revision/4
                                                                                                                      -trvf
 
COLR for Watts Bar Unit 1, Cycle 7 Hasht (bet)        WtI) 0.0000      1.0000 0.2000      1,0000
      .6
        .40                                                                                  1.0000 0.4000      1.0000 0.6000      1.0000
              ----------                                                        0.8000 1.0000 1.0000 1.0000 2.2512 2.2000 1.4000        1.2321 1.6000      1.2167 2.8000      1.1931 L                      2.0000       3.1793 12000        1.1606 2.4000        1.1410 1.1210 2.5000        1.1104 3.0000       1.1062 3.2000          1019 3.4000        1.1008 4                           --- ----                        3.9000      1.0998 8.8000      1.1001 4.0000      1.1030 4.2000      1.1088 4.4000      1.2132 1H                                            4.6000      1.1173
      .20      ]UL111--                                                       4.8O00      1.1206 111F  I 0.0000      1.1251 6.2000      1.2549 5.4000      1.1603 3.60000      1.1648 0.8000      1.1804 O0000    1.1972 6.2.000      1.2185 I     A  LLUL                                      6.4000        1.2283 6.6O000      1.2416 1.2531 7.0000        1.262"/
7.2000        1.2708 11 11 111 11     1111 111 11 A 111 11 111 1    7.4000        1.27O8 7.6000        1.276a 7.O000
                              .. Is              II III                      8.0000       1.2765 8P.200        1.2714 12,833 ILLI                                                        M.216 IT                              IMIA                          8.8000      12402 JJ-U I I I i    9,0000 9,2000 9.4000       1.2404 a0rt*  a. a    3       4   3    '    7    a        1.0  11 . 2 9.6000 9,8000       1.2848 CORE HIZGHT (FEET) 1o.oooo      1.23*
10.2000       1.2381 10.4000        1.2446 10.6000        1.2503 10.8000        1.2541 Figure 4                            11.0000        3.0000 11.2000       3.0000 RAOC Summary of Max W(z) at 150 MWDIMTU                      11.4000        2.0000 with HFP AFD Band of -12/+6 %                        11.0000       2.0000 11.2000       1,0000 (Top and Bottom 10% Excluded)                        12..0000      1.0000 Unit 1                                                                              Cycle 7 WATIS BAR                                  Page 9 of 18                    Revision 3            1
 
COLR for Watts Bar Unit 1, Cycle 7 Helghtft)    Max W(z) 0.0000         1.0000 0.2MOO        1.0000
      ,L. sU                                                                                                            0.4000          I'OODO 0.6*00 0.800O        1.0000 tEIttt                                                                        11 11111113 1.0000 1200D 1.000 1.1439 1.4000        1.1319 1.6000        1.1182 I                                                                                        1.8000        1.1033 IF                                I I I I I I I I I I I    I I I I I I 1               9-0000        1.008" 1.0722 1.40 *1*      IIE*IuI*I~            I                                                                            2.4000        1.0679 18000 umr                                    1 f 1 1-JJ-U I 1   1 1     1   1   1-1 1 1                            2.8000 3.0000 1.0425 1.0331 1.=G9 1.0304
                                    .... ...                     --------------------- I        -
                                                                                                                        &40W0 3.8000 1.0344 1.0387 18S000 I I 111 11TI I I I                    I I I I I I-I I 113        4.0000 1.OSW 4.2000        1.07V"
        ,, 20*D I        4.4000 N
III  11        111  III        11114[ilIII 1                                                              4.8000 5.4000          1.1001 1.12SO k..                                                                                                     5*4000
                                                                                                                          ..8000        1.1463 1.,60" 8.0000          1.1664
                                                                                                                        &2000          1.2104 3:                ------------------- 31                          6.40W 8.8000          1.2475 iI                                        H  H  !H    i I I I I I 1 11 1 1 1 1 1 11 111]            68A000 1.2040 7.0000          12791 I -"W 7.4000 7.401*        1X61 7.600D        1.3168 ii I1I I111111 1 i H!                                    ii 1.10
                          !-H::                                                                                        7.8000 6.0000 6.2000 1.3241 1.3291 8.4300        1.3316 l                                                                                                      5.9000
                                  . ... ..... .                          . . .. . . . . . . . . .. . . . . .                          1.3207
                    . .. .                                                                                                            1.320 1111#N 11 1 ! I lm              l 11 1 1   1 11      11      1                                                 -1.284 9.0000
                                        ,-                                                                          92000          1.3W0 9.4000        1..351B 9.60o0          1-63 1 II~lI                                  9.8*0          I*3775 1.00
              ~4~+H~4                                                                                                10.0o000 10.2000 10.4o000 13600 1.4076 11 1 5 1.
1 13            1.                     IM        1            1    I 10.0000        1.421 5
                      .1       2 1 1 11-11 3                      6        7      U                                                      1.4340 j
poem"                                                                              10
                                                                                              .LU    .L.              o0.8000 1.4441 CORE IE IGHT (FEET)                                                      11.0000 11.2000 1.W000 11.4000        1.0000 1,0000 11.8000        tom00 11.8000 It.0000        1.0000 Figure 5                                                                    1.0=0 RAOC Summary of Max W(z) at 3000 MWDIMTU with HFP AFD Band of -12/+6 %
(Top and Bottom 10% Excluded)
Unit 1                                                                                                                          Cycle 7 WATTS BAR                                                        Page 10 of 18                                              Ravision 4 i
I
 
COLR for Watts Bar Unit 1, Cycle 7 Holght(ft) Max W(z) o.00Oo       11M000 1    0.2000       1.0000 1.50 if fill,        1113=13=                                    = IfTij                              0.4000        1.0000 0.0000       1.0000 ni          .:I:        .  ~..
0.6000       1.oooo 1.0000       10000 11111111111 !!! 11! 11 !!!! 111                      1.2000       1.1684 1.4000       1.1576 1.80=0       1.1467 Lirn I I I I 1 111 1 111111 1111 1 11111 11 1 III[ It-L.UJIL111 11111 1_111 I              JIM          1.8000 2.0000 1.1349 1.1240 1.40 1 ! 1111 1 11 111 111111 111 11 1 111171711 11 1 111 1 1 111                                        2000 2.4000 2.6000 1.1125 1.1009 1.0IM1 2.1000       1.0786 LJ I          I1      1-11        3.0000 3.2000 I.071G 1.0736 fill Jill0 14000         1.0756 1.30
              'Illi 11JL11111      IIf              111I 11111  itif111114.11111                                      3.0000 ISM00 4.0000 4.2000 1.0773 1,0792 1.0m29 1.0661 111 111111                1111ft17111111 1111111 1111111 111        1=                4.40m0 4.6000 1.0047 1.1005
                          -I-                                                                                    4.0000       1.1071
:1
                          .4L                              mr                  ;:7,7-z 7--;.j j j j j i
                                                                                , L-n --= - . ----
5.0000 5.2000
                                                                                                                  &4000 1.113t 1,1216 I.1300 5.OO00       1,1572 6.9000       1.1743 1.20 M1i                                      :1            3M                              13        8.MO00 6.2000 1,1890 1.2042 6.4000       1.2163 6.W000       1.2269 6.9000       1.2356 11114.1111 !!! !!! il I                                                                          7.0000 7.2000 1.2425 1.2486 7.4000       1.2632 7.0000       1.2w9 7.6000       12573 r:z                      111 I-Tt                                              8.0000 892000 1.2558 12627 1.10                                                                                                                    1.2480 I I I11111 1M.1 1111 112M II II I IIII IIIIII IJ!1111111 1111                                      &.4000 8.0O00        1.2488
                                            *ff                                                                8.0000       1.2478 9.OOO         1.2611 I          I-i-        11ji-111 111111 lit                      M3          9.2000 9.4000 1.256N 1.234 9.6000       1.2686 D.000       10.2670
                              -A-&.                                                                            10.0000       i.=087 10.2000       1.2677 s1o.                                                                                                    10.4000       1.2669
                                                                  -..                --A  I            F I ram7              a        .      *  )        I                                                10.6000      1.2aw 10.000       1.285 CORE EEIGRT              (FEET)                                    11.0000       1.0000 11,2000       1,o0000 11.4000       1.0000 11.4000       1.0000 11.J000       1,0o000 12.0000       t.omoo Figure 6 RAOC Summary of Max W(z) at 10000 MWDJMTU with HFP AFO Band of -12/+6 %
(Top and Bottom 10% Excluded)
Unit 1                                                                                                                   Cycle 7 WATTS BAR                                                      Page 11 of 18                                        Revision 4
 
COLR for Watts Bar Unit 1, Cycle 7 Height      Max.
(feet)      W(z) 0.0000      1.0000 0.2000      1.0000 0.4000      1.0000 0.6000      1.0000 1.501                                                                                     0.8000      1.0000 1.0000      1.0000
                                                    ........ I .....  -   ... -    ...... 1 1.2000      1.3795 1.4000      1.3678 1t~                                .... I    1.6000      1.3543 1.3395 ltWzjz                  1.8000 2.0000      1.3232 2.2000      1.3069 1.4I    HIl Hil !11 Ill111111MMi 1111111 111111                                          2.4000 2.6000 1.2876 1.2675 2.8000      1.2466 3.0000     1.2248 3.2000     1.2105 3.4000     1.2053 I                                                              3.6000      1.2007 3.8000      1.1965 4.0000     3.1916 4.2000     1.1856 1.3011 4.4000      1.1790 4.6000     1.1714 rl 111111111 M 111111111111 111111                                                4.8000     1.1639 rwtiiiiii                                    ............I &#xfd; . . . . . . . .
5.0000 5.2000 1.1586 1.1552 5.4000     1.1537 5.6000     1.1540 5.8000     1.1552 Ifl...-4--.--4-4                                                                  6.0000     1.1558 6.2000     1.1542 6.4000     1.1523 6.6000     1.1491 iir E
I 6.8000     1.1441 7.0000     1.1392 7.2000     1.1331 7.4000      1.1279 7.6000      1.1215 1.1137 1.16 1--11itt                                        7.8000 8.0000     1.1060
                                                                                  . . . . 0, i 8.2000      1.0961 8.4000      1.0866 8.6000      1.0780 8.8000      1.0781 9.0000      1.0827 9.2000    1.0839
                                          -1   1 1 1 L J.
          - 11Ud 3    4      5 1         8    9  10 lit=Iht 11 9.4000 9.6000 1.0838 1.0877
: 2. 2 9.8000      1.0983 CORE HEIGHT (FEET)                                    10.0000*    1.1183 10.2000      1.1369 10.4000      1.1575
                                                                                                .10.6000      1.1782 10.8000      1.1957.
11.0000    1.0000 Figure 7                                    11.2000    1.0000.
RAOC Summary                of  Max    W(z) at 16000 MWD/MTU                  11.4000    1.0000 11.6000    1.0000 with HFP AFD Band of -8/+10 %                                  11.8000    1.0000 12.0000     1.0000 (Top and Bottom 10% Excluded)
Unit 1                                                                                               Cycle 7 WATTS BAR                                              Page 12 of 18                            Revision 6 I
 
COLR for Watts Bar Unit 1, Cycle. 7 Table A.1.
Few(Z) Penalty Factor Core          FQWCL)
Burnup        Penalty "MWDMFL          Factor All bunups        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 FoWCZ) is expected to Increase per 31 Effective Full Power Days (EFPD) starting from the burnup at which the FQw(Z) was determined.
Unit 1                                                                           Cycle 7 WATTS BAR                               Page 13 of i8                        Revision 1
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band    A Bank B Bank C Bank  D Bank          Band    ABank BBank CBank  DBank Overlap                                      Overlap Counter                                      Counter (steps)                                      (steps)             _  _
o      0                                    72      72 2      2                                     74      74 4      4                                    76      76 6      6                                    78      78 so      so 8      8 10      10            ___      ___            82      82 12      12                                    84      84 14      14                                    86      86 16      16                                    88      88 18      18                                    90                            _o 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 7 WATTS BAR                          Page 14 of 18                    Revision I
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band    ABank B Bank  CBank  DBank            Band    A Bank B Ba*k C Bank  D Bank Overlap                                        Overlap Counter                                        Counter (3teps)                                        (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  26                              230    230    102                   "
154 156    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                              259            130   2 184    184  56                              260            132   4 186    186  5      .                        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    ING  68                              272            144  16 198    198  70                              274            146  18 200    200  72                              276            148   20 20z    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  8                                292            164   36 218    218  90                              294            166   38 Unit I                                                                      Cycle 7 WATTS BAR                            Page 15 of 18                      Revision 1
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band    A Bank B Bank  C Bank D Bank          Band    ABank BBank CBank    DBank Overlap                                      Overlap Counter                                      Counter (steps) 296            168    40                    370                  114 298            170    42                    372                  116 300            172    44                    374                  118 302            174    46                    376                  120(
304            176    48                    378                  122 308            178    50                    380                  124 308            180    152                    38Z                  126 310            182    54                    384                  128      0 31Z            154    56                    386                  130      2 314            ISO    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          3      142      14 326            198    70                    400                  144      16 328            200    72                    402                  146      18 330            202    74                    404                  148      20 332            204    76                    406                  150      22 334            206    78                    408                  152      24 336            208    80                    410                  154      26 338            210    82                    412                  156      28 340            212    84                    414                  158      30 342            214    86                    416                  160      32 344            216    88                    418                  162       34 346            218    90                    420                  164       36 348            220    92                    422                  166       38 350            222    94                    424                  168       40 352            224    96                    426                  170       42 354            226    98                    428                  172       44 356            228    100                    430                  174       46 358            230    102                    432                  176       48 360            232    104                    434                  178       50 362                    106                    436                  180       52 364                    108                    438                  182       54 366                    110                    440                  184      56 368                    112                    442                  186      58 Unit 1                                                                    Cycle 7 WATTS BAR                          Page 16 of 18                      Revision I
 
COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band    ABank BBank CBank  DBank          Band    ABank BBank CBank  DBank Overlap                                    Overlap Counter                                    Counter (Steps)                                    (steps) 444                188    60              518                        134 446                190    62              520                        138 448                192    64              522                        138 450                194    68              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    95              554                        170 482                226    98              556                        172 484                228    100            558                        174 486                230    102            560                        176 488                232    104            562                        178 400                        106            564      ..                  10 492                        108            566                        182 494                        110            568                        184 496                        112            570                        186 498                        114            572                        188 500                        116            574                        190 502                        118            576                        192 504                        120            578                        194 506                        122            580                        196 508                        124            582                        198 510                        126            584                        200 512                        128            586                        202 514                        130            588                        204 516                        132            590                        206 Unit I                                                              Cycle 7 WATTS BAR                        Page 17 of 18                   Revision I
 
4 COLR for Watts Bar Unit 1, Cycle,7 Table 1: Control Rod Overlap Band     ABank   BBank   CBank DBank Overlap Counter (steps) 592                              208 594                              210 506                              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 7 WATTS BAR                            Page 18 of 18                    Revision I}}

Latest revision as of 02:28, 14 March 2020

Core Operating Limits Report (COLR) for Cycle 7, Revision 6
ML062350165
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 08/17/2006
From: Pace P
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML062350165 (21)
v • d • e


Text

Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 AUG 1.7 2006 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 7, REVISION 6 The purpose of this letter is to provide Revision 6 of the Cycle 7 COLR in accordance with WBN Technical Specification 5.9.5.d. Revision 6 revises the axial flux difference (AFD) limit and the W(z) values. This revision was effective as of August 10, 2006.

There are no regulatory commitments associated with this submittal. If you have any questions concerning this letter, please contact me at (423) 365-1824.

Sincerely, P. L. Pace Manager, Site Licensing and Industry Affairs

Enclosure:

Watts Bar Nuclear Plant Unit 1, Cycle 7 Core Operating Limits Report, Revision 6 cc: See Page 2 onrcycd pa Printed

U.S. Nuclear Regulatory Commission Page 2 AUG !17 2006 Enclosure cc (Enclosure):

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

Enclosure Watts Bar Nuclear Plant Unit 1 Cycle 7 Core Operating Limits Report, Revision 6

COLR for Watta Bar Unit 1, Cycle 7 QA Record L36 060809 802 WATTS BAR NUCLEAR PLANT, UNIT 1, CYCLE 7 CORE OPERATING LIMITS REPORT Revision 6 August 2006 Prepared by:-

Nuclear Fuel Design Date

'Nuclear Fuel design Date Reviewed by:/*S Manager, Nucler/ I esign Date Reactor Engineering Supenor Date Approved by:

PORC Chairman 7 Date Plant Manager ( Date Date of PORC PORC Meeting Affected Revision Approval Number Pages Reason for Revision 0 3111/05 4073 All Initial issue 1 3/18/05 4075- All Revised to remove cycle 7 restriction to mode 6 2 5/31/05 4089 1,9-12 Revised maximum W(z) values 3 9/19/05 4107 1, 9- 12 Revised maximum W(z) values 4 3/13/06 4127 1,10-12 Revised maximum W(z) values 5 6/28/06 4144 1,4,8,12 Revised AFD Limit and W(z)

I values 6 1, 8,12 Revised AFD Limit and W(z) values Unit 1 Cycle 7 WATTS BAR Page I of 18 Revision 6

COLR for Watts Bar Unit 1, Cycle 7 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Watts Bar Unit I Cycle 7 has been prepared in accordance with the requirements of the Technical Specifications 5.9.5.

The Technical Specifications affected by this report are listed below:

3.1.4 Moderator Temperature Coefficient (MTC) 3.1.6 Shutdown Bank Insertion Limits 3.1.7 Control Bank Insertion Limits 3.2.1 Heat Flux Hot Channel Factor (FQ(Z))

3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (Pal')!

3.2.3 Axial Flux Difference (AFD) 3.5.1 Accumulators 3.5.4 Refueling Water Storage Tank (RWST) 3.9.1 Boron Concentration Z.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed In section 1.0 are presented in the following subsections. These limits have been developed using the NRC approved methodologies specified in the Technical Specifications Section 5.9.5.

The following abbreviations are used in this section:

BOL - Beginning of Cycle Life ARO -- All Rods Out HZP -- Hot Zero Thermal Power EOL - End of Cycle Life RTP Rated Thermal Power Unit I Cycle 7 WATTS BAR Page 2 of 18 Revision I v

COLR for Watts Bar Unit 1, Cycle 7 2.1 MODERATOR TEMPERATURE COEFFICIENT - MTC (LCO 3.1.4) 2.1.1 The MTC limits are:

The BOLJAR1O/H-ZP - MTC shall be less positive than or equal to 0 Ak/k/*F (upper limit). With the measured BOLJARO/HZP - MTC more positive than

-0.B0 x 10- 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/ 0F (upper limit) for all times In core life.

The EOIJARO/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 104 Ak/k/PF.

2.1.3 The 60 ppm surveillance limit Is:

The measured 60 ppm /ARO/RTP-MTC should be less negative than or equal to 0'k/kIF.

-4.28 x 10' 2.2 SHUTDOWN BANK INSERTION LIMITS (LCO 3.1.6) 2.2.1 The shutdown banks shall be withdrawn to a position greater than or equal to 225 steps withdrawn.

2.3 CONTROL BANK INSERTION LIMITS (LCO 3.1.7) 2.3.1 The control banks shall be limited in physical insertion as shown in Figure 1.

2.3.2 Table 1 shows the control rod overlap positions.

Unit I Cycle 7 WATTS BAR Page 3 of 18 Revision I

COLR for Watts Bar Unit 1, Cycle 7 2.4 HEAT FLUX HOT CHANNEL FACTOR - VQ(Z) (LCO 3.2.1)

F(Z) !; [CFQ,/ P* K(Z) for P>0.5 Fo(Z) S [CFQI 0.5]

  • K(Z) for P 5 0.5 Where P %-Thermal Power/Rated Tharmal Power 2.4.1 CFQ-= 2.50 2.4.2 K(Z) is provided in Figure 2.

2.4.3 Fe(Z) = FoQ(Z)* 1.01s where: F01 (ZT)is the measured valuc of F0(Z) obtaincdior incote flux map msults and 1.0815 Is a factor that accounts for fuel manufacwri.g tolerances and flux map measurtement uncertainty.

2.4.4 FcW(Z) - F(Z)

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

2.4.5 Fow(Z) Penalty Factor The FJ4 w(Z) penalty factor is providcd in Table A. 1.

Unit I Cy^1c 7 WATfS BAR Page 4 of 18 Revison/5"

ý/O

COLR for Watts Bar Unit 1, Cycle 7 2.5 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR - Fan (LCO 3.2.2)

FaN < Fain I + PF (-P))

I where P = Thermal Power / Rated Thermal Power Famh = 1.65 for RFA-2 fuel, and FA = 1.62 for VANTAGE+IPERFORMANCE+ fuel PF = 0.3 2.6 AXIAL FLUX DIFFERENCE - AFD (LCO 3.2.3) 2.6.1 The AFD itmits for Cycle 7 are provided in Figt re 3.

2.7 REFUELING BORON CONCENTRATION (LCO 3.9.1) 2.7.1 The refueling boron concentration shall be Ž 2000 ppm.

2.8 ACCUMULATORS (LCO 3.5.1) 2.8.1 There are 240 tritium producing burnable absorber rods (rPBARs) in the reactor core for Cycle 7.

2.9 REFUELING WATER STORAGE TANK - RWST (LCO 3.5.4) 2.9.1 There are 240 tritium producing burnable absorber rods (TPBARs) in the reactor core for Cycle 7.

Unit I Cycle 7 WATTS BAR Page lw 5 of 18 Revision I

COLR for Watts Bar Unit 1, Cycle 7 250 InImlI nIT 231 (0.074,231) 1 (0.632,231) 225 11111~~~~ (0.506, 225) 'H IAI I ffJ~~~iIiii~

i !i i (0M8,25

.11111111-11zl 11: Jillvr~i 111-1111 II 200 1==1 1oil !!=7=11 flII(1.0.II1Ein 1111111 175 i 11111111111 i iii 150 MM iiiii -_,6 i

iiiii ...................I 125 I Nli 1112-1 iii 0 ... . . . . . . . . . . . .

F-  : i ' L.--

0 0I  !! 3=

0. 100 Se F;j (0 6) 1 0

0 75 11 1 !M 0

I;:: :1.............................

50 S--&

25 1111 I III 0 I-LA--L -FA 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 I Cycle 7 WATTS BAR Page 6 of 18 Revision I

COLR for Watts Bar Unit 1, Cycle 7 1.2 .. ...... ... .-

1.1 1.0 . . . . . . - - -

0.9 0.8 10 0.7 0.6 - C- H-ld.b0 is 0.000 1.000 6.000 1.000 0

LI 12.000 0.9256 0.4 0.3 ----

0.2 -...

0.1 0

0 2 4 6 8 10 Core Height (feet)

Figure Z K(Z) - Normalized F,(Z) as a Function of Core Height I

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

COLR for Watts Bar Unit 1, Cycle 7 120

I ,

110,  : II

. L... . . ...

.1 (-8. 100) I--

I." .' "*'

(10, 100 . . .

100

r. . - -- I - -

90  !........4 ..... Acceptable Operation 80 Unaeptable1 ~ ~etable U

0

. L . ..~ .. .... . Oeration 70 w

60 U

(U 50 - ( ,0 (24. 50) a 40

... .. .L . . .

30 II 20 10 I

0

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

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

Unit 1 Cycle 7 WATTS BAR Page 8 of 18 Revision/4

-trvf

COLR for Watts Bar Unit 1, Cycle 7 Hasht (bet) WtI) 0.0000 1.0000 0.2000 1,0000

.6

.40 1.0000 0.4000 1.0000 0.6000 1.0000

0.8000 1.0000 1.0000 1.0000 2.2512 2.2000 1.4000 1.2321 1.6000 1.2167 2.8000 1.1931 L 2.0000 3.1793 12000 1.1606 2.4000 1.1410 1.1210 2.5000 1.1104 3.0000 1.1062 3.2000 1019 3.4000 1.1008 4 --- ---- 3.9000 1.0998 8.8000 1.1001 4.0000 1.1030 4.2000 1.1088 4.4000 1.2132 1H 4.6000 1.1173

.20 ]UL111-- 4.8O00 1.1206 111F I 0.0000 1.1251 6.2000 1.2549 5.4000 1.1603 3.60000 1.1648 0.8000 1.1804 O0000 1.1972 6.2.000 1.2185 I A LLUL 6.4000 1.2283 6.6O000 1.2416 1.2531 7.0000 1.262"/

7.2000 1.2708 11 11 111 11 1111 111 11 A 111 11 111 1 7.4000 1.27O8 7.6000 1.276a 7.O000

.. Is II III 8.0000 1.2765 8P.200 1.2714 12,833 ILLI M.216 IT IMIA 8.8000 12402 JJ-U I I I i 9,0000 9,2000 9.4000 1.2404 a0rt* a. a 3 4 3 ' 7 a 1.0 11 . 2 9.6000 9,8000 1.2848 CORE HIZGHT (FEET) 1o.oooo 1.23*

10.2000 1.2381 10.4000 1.2446 10.6000 1.2503 10.8000 1.2541 Figure 4 11.0000 3.0000 11.2000 3.0000 RAOC Summary of Max W(z) at 150 MWDIMTU 11.4000 2.0000 with HFP AFD Band of -12/+6 % 11.0000 2.0000 11.2000 1,0000 (Top and Bottom 10% Excluded) 12..0000 1.0000 Unit 1 Cycle 7 WATIS BAR Page 9 of 18 Revision 3 1

COLR for Watts Bar Unit 1, Cycle 7 Helghtft) Max W(z) 0.0000 1.0000 0.2MOO 1.0000

,L. sU 0.4000 I'OODO 0.6*00 0.800O 1.0000 tEIttt 11 11111113 1.0000 1200D 1.000 1.1439 1.4000 1.1319 1.6000 1.1182 I 1.8000 1.1033 IF I I I I I I I I I I I I I I I I I 1 9-0000 1.008" 1.0722 1.40 *1* IIE*IuI*I~ I 2.4000 1.0679 18000 umr 1 f 1 1-JJ-U I 1 1 1 1 1 1-1 1 1 2.8000 3.0000 1.0425 1.0331 1.=G9 1.0304

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

&40W0 3.8000 1.0344 1.0387 18S000 I I 111 11TI I I I I I I I I I-I I 113 4.0000 1.OSW 4.2000 1.07V"

,, 20*D I 4.4000 N

III 11 111 III 11114[ilIII 1 4.8000 5.4000 1.1001 1.12SO k.. 5*4000

..8000 1.1463 1.,60" 8.0000 1.1664

&2000 1.2104 3: ------------------- 31 6.40W 8.8000 1.2475 iI H H !H i I I I I I 1 11 1 1 1 1 1 11 111] 68A000 1.2040 7.0000 12791 I -"W 7.4000 7.401* 1X61 7.600D 1.3168 ii I1I I111111 1 i H! ii 1.10

!-H:: 7.8000 6.0000 6.2000 1.3241 1.3291 8.4300 1.3316 l 5.9000

. ... ..... . . . .. . . . . . . . . .. . . . . . 1.3207

. .. . 1.320 1111#N 11 1 ! I lm l 11 1 1 1 11 11 1 -1.284 9.0000

,- 92000 1.3W0 9.4000 1..351B 9.60o0 1-63 1 II~lI 9.8*0 I*3775 1.00

~4~+H~4 10.0o000 10.2000 10.4o000 13600 1.4076 11 1 5 1.

1 13 1. IM 1 1 I 10.0000 1.421 5

.1 2 1 1 11-11 3 6 7 U 1.4340 j

poem" 10

.LU .L. o0.8000 1.4441 CORE IE IGHT (FEET) 11.0000 11.2000 1.W000 11.4000 1.0000 1,0000 11.8000 tom00 11.8000 It.0000 1.0000 Figure 5 1.0=0 RAOC Summary of Max W(z) at 3000 MWDIMTU with HFP AFD Band of -12/+6 %

(Top and Bottom 10% Excluded)

Unit 1 Cycle 7 WATTS BAR Page 10 of 18 Ravision 4 i

I

COLR for Watts Bar Unit 1, Cycle 7 Holght(ft) Max W(z) o.00Oo 11M000 1 0.2000 1.0000 1.50 if fill, 1113=13= = IfTij 0.4000 1.0000 0.0000 1.0000 ni .:I: . ~..

0.6000 1.oooo 1.0000 10000 11111111111 !!! 11! 11 !!!! 111 1.2000 1.1684 1.4000 1.1576 1.80=0 1.1467 Lirn I I I I 1 111 1 111111 1111 1 11111 11 1 III[ It-L.UJIL111 11111 1_111 I JIM 1.8000 2.0000 1.1349 1.1240 1.40 1 ! 1111 1 11 111 111111 111 11 1 111171711 11 1 111 1 1 111 2000 2.4000 2.6000 1.1125 1.1009 1.0IM1 2.1000 1.0786 LJ I I1 1-11 3.0000 3.2000 I.071G 1.0736 fill Jill0 14000 1.0756 1.30

'Illi 11JL11111 IIf 111I 11111 itif111114.11111 3.0000 ISM00 4.0000 4.2000 1.0773 1,0792 1.0m29 1.0661 111 111111 1111ft17111111 1111111 1111111 111 1= 4.40m0 4.6000 1.0047 1.1005

-I- 4.0000 1.1071

1

.4L mr  ;:7,7-z 7--;.j j j j j i

, L-n --= - . ----

5.0000 5.2000

&4000 1.113t 1,1216 I.1300 5.OO00 1,1572 6.9000 1.1743 1.20 M1i :1 3M 13 8.MO00 6.2000 1,1890 1.2042 6.4000 1.2163 6.W000 1.2269 6.9000 1.2356 11114.1111 !!! !!! il I 7.0000 7.2000 1.2425 1.2486 7.4000 1.2632 7.0000 1.2w9 7.6000 12573 r:z 111 I-Tt 8.0000 892000 1.2558 12627 1.10 1.2480 I I I11111 1M.1 1111 112M II II I IIII IIIIII IJ!1111111 1111 &.4000 8.0O00 1.2488

  • ff 8.0000 1.2478 9.OOO 1.2611 I I-i- 11ji-111 111111 lit M3 9.2000 9.4000 1.256N 1.234 9.6000 1.2686 D.000 10.2670

-A-&. 10.0000 i.=087 10.2000 1.2677 s1o. 10.4000 1.2669

-.. --A I F I ram7 a . * ) I 10.6000 1.2aw 10.000 1.285 CORE EEIGRT (FEET) 11.0000 1.0000 11,2000 1,o0000 11.4000 1.0000 11.4000 1.0000 11.J000 1,0o000 12.0000 t.omoo Figure 6 RAOC Summary of Max W(z) at 10000 MWDJMTU with HFP AFO Band of -12/+6 %

(Top and Bottom 10% Excluded)

Unit 1 Cycle 7 WATTS BAR Page 11 of 18 Revision 4

COLR for Watts Bar Unit 1, Cycle 7 Height Max.

(feet) W(z) 0.0000 1.0000 0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 1.501 0.8000 1.0000 1.0000 1.0000

........ I ..... - ... - ...... 1 1.2000 1.3795 1.4000 1.3678 1t~ .... I 1.6000 1.3543 1.3395 ltWzjz 1.8000 2.0000 1.3232 2.2000 1.3069 1.4I HIl Hil !11 Ill111111MMi 1111111 111111 2.4000 2.6000 1.2876 1.2675 2.8000 1.2466 3.0000 1.2248 3.2000 1.2105 3.4000 1.2053 I 3.6000 1.2007 3.8000 1.1965 4.0000 3.1916 4.2000 1.1856 1.3011 4.4000 1.1790 4.6000 1.1714 rl 111111111 M 111111111111 111111 4.8000 1.1639 rwtiiiiii ............I ý . . . . . . . .

5.0000 5.2000 1.1586 1.1552 5.4000 1.1537 5.6000 1.1540 5.8000 1.1552 Ifl...-4--.--4-4 6.0000 1.1558 6.2000 1.1542 6.4000 1.1523 6.6000 1.1491 iir E

I 6.8000 1.1441 7.0000 1.1392 7.2000 1.1331 7.4000 1.1279 7.6000 1.1215 1.1137 1.16 1--11itt 7.8000 8.0000 1.1060

. . . . 0, i 8.2000 1.0961 8.4000 1.0866 8.6000 1.0780 8.8000 1.0781 9.0000 1.0827 9.2000 1.0839

-1 1 1 1 L J.

- 11Ud 3 4 5 1 8 9 10 lit=Iht 11 9.4000 9.6000 1.0838 1.0877

2. 2 9.8000 1.0983 CORE HEIGHT (FEET) 10.0000* 1.1183 10.2000 1.1369 10.4000 1.1575

.10.6000 1.1782 10.8000 1.1957.

11.0000 1.0000 Figure 7 11.2000 1.0000.

RAOC Summary of Max W(z) at 16000 MWD/MTU 11.4000 1.0000 11.6000 1.0000 with HFP AFD Band of -8/+10 % 11.8000 1.0000 12.0000 1.0000 (Top and Bottom 10% Excluded)

Unit 1 Cycle 7 WATTS BAR Page 12 of 18 Revision 6 I

COLR for Watts Bar Unit 1, Cycle. 7 Table A.1.

Few(Z) Penalty Factor Core FQWCL)

Burnup Penalty "MWDMFL Factor All bunups 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 FoWCZ) is expected to Increase per 31 Effective Full Power Days (EFPD) starting from the burnup at which the FQw(Z) was determined.

Unit 1 Cycle 7 WATTS BAR Page 13 of i8 Revision 1

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Band ABank BBank CBank DBank Overlap Overlap Counter Counter (steps) (steps) _ _

o 0 72 72 2 2 74 74 4 4 76 76 6 6 78 78 so so 8 8 10 10 ___ ___ 82 82 12 12 84 84 14 14 86 86 16 16 88 88 18 18 90 _o 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 7 WATTS BAR Page 14 of 18 Revision I

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band ABank B Bank CBank DBank Band A Bank B Ba*k C Bank D Bank Overlap Overlap Counter Counter (3teps) (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 26 230 230 102 "

154 156 156 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 54 259 130 2 184 184 56 260 132 4 186 186 5 . 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 ING 68 272 144 16 198 198 70 274 146 18 200 200 72 276 148 20 20z 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 8 292 164 36 218 218 90 294 166 38 Unit I Cycle 7 WATTS BAR Page 15 of 18 Revision 1

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band A Bank B Bank C Bank D Bank Band ABank BBank CBank DBank Overlap Overlap Counter Counter (steps) 296 168 40 370 114 298 170 42 372 116 300 172 44 374 118 302 174 46 376 120(

304 176 48 378 122 308 178 50 380 124 308 180 152 38Z 126 310 182 54 384 128 0 31Z 154 56 386 130 2 314 ISO 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 3 142 14 326 198 70 400 144 16 328 200 72 402 146 18 330 202 74 404 148 20 332 204 76 406 150 22 334 206 78 408 152 24 336 208 80 410 154 26 338 210 82 412 156 28 340 212 84 414 158 30 342 214 86 416 160 32 344 216 88 418 162 34 346 218 90 420 164 36 348 220 92 422 166 38 350 222 94 424 168 40 352 224 96 426 170 42 354 226 98 428 172 44 356 228 100 430 174 46 358 230 102 432 176 48 360 232 104 434 178 50 362 106 436 180 52 364 108 438 182 54 366 110 440 184 56 368 112 442 186 58 Unit 1 Cycle 7 WATTS BAR Page 16 of 18 Revision I

COLR for Watts Bar Unit 1, Cycle 7 Table 1: Control Rod Overlap Band ABank BBank CBank DBank Band ABank BBank CBank DBank Overlap Overlap Counter Counter (Steps) (steps) 444 188 60 518 134 446 190 62 520 138 448 192 64 522 138 450 194 68 524 140 452 196 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 95 554 170 482 226 98 556 172 484 228 100 558 174 486 230 102 560 176 488 232 104 562 178 400 106 564 .. 10 492 108 566 182 494 110 568 184 496 112 570 186 498 114 572 188 500 116 574 190 502 118 576 192 504 120 578 194 506 122 580 196 508 124 582 198 510 126 584 200 512 128 586 202 514 130 588 204 516 132 590 206 Unit I Cycle 7 WATTS BAR Page 17 of 18 Revision I

4 COLR for Watts Bar Unit 1, Cycle,7 Table 1: Control Rod Overlap Band ABank BBank CBank DBank Overlap Counter (steps) 592 208 594 210 506 212 598 214 600 216 602 218 604 220 606 222 608 224 610 226 612 228 614 230 616 232 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 7 WATTS BAR Page 18 of 18 Revision I

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