ML20117H353
| ML20117H353 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 05/03/1996 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20117H348 | List: |
| References | |
| NUDOCS 9605280169 | |
| Download: ML20117H353 (14) | |
Text
{{#Wiki_filter:' L 36 9 60429 800 QA RECORD l SEQUOYAH NUCLEAR PIANT UNIT 2, CYCLE 8 CORE OPERATING LINITS REPORT I I REVISION O April 23, 1996 i Prepared: l
/ 4-2.3 -96 Nuclear Fue\V Date l
Reviewed
- i Y& / V-Ju -96 Reactor Efttfineering Supervisor Date D0 / TSS&
Technical S 'poft Manager Date s AW / $b Ol h PORC ChaiY1 nan Date Revision 0 Pages affected Reason for Revision SEQUOYAH - UNIT 2 Page 1 of 14 Revision 0 9605280169 960521 PDR ADOCK 05000328 p PDR
COLR FOR SEQUOYAH UNIT 2 CYCLE 8 1.0 CORE OPERATING LIMITS REPOEI This Core Operating Limits Report (COLR) for Sequoyah Unit 2 Cycle 8 has been prepared in accordance with the requirements of Technical Specification (TS) 6.9.1.14. The TSs affected by this report are listed below: 3/4.1.1.3 Moderator Temperature Coefficient (MTC) 3/4.1.3.5 Shutdown Rod Insertion Limit 3/4.1.3.6 Control Rod Insertion Limits 3/4.2.1 Axial Flux Difference (AFD) 3/4.2.2 Heat Flux Hot Channel Factor (Fg(z)) 3/4.2.3 N Nuclear Enthalpy Hot Channel Factor (F AH) 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 TS 6.9.1.14. The following abbreviations are used in this section: BOL stands for Beginning of Cycle Life ARO stands for All Rods Out HZP stands for Hot Zero THERMAL POWER EOL stands for End of Cycle Life RTP stands for RATED THERMAL POWER 2.1 Moderator Temperature Coefficient - MTC (Specification 3/4.1.1.3) 2.1.1 The MTC limits are: The BOL/ARO/HZP-MTC shall be less positive than 0 Ak/k/ F (BOL limit). With the measured BOL/ARO/HZP-MTC more positive than -0.71 x 10-5 Ak/k/ F (as-measured MTC limit), establish control rod withdrawal limits to ensure the MTC remains less positive than 0 Ak/k/ F 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. SEQUOYAH - UNIT 2 Page 2 of 14 Revision 0 I
. l l COLR FOR SEQUOYAH UNIT 2 CYCLE 8 l 1 ' l , 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. l 2.2 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5) I i l 2.2.1 The shutdown rods shall be withdrawn to a position
- as defined below:
Cycle Burnuo (MWD /MTU) Sters Withdrawn 2 0 to 5 17,450 2 225 to 5 231 2.3 Control Rod Insertion Limits (Specification 3/4.1.3.6) l 2.3.1 The control rod banks shall be limited in physical insertion as shown in Figure 1. , 1 i 2.4 Axial Flux Difference - AFD (Specification 3/4.2.1) 2.4.1 The axial flux difference (AFD) limits are provided in Figure 2. I 2.5 Heat Flux Hot Channel Factor - Fg111 (Specification 3/4.2.2) p RTP
- Fg(z) $
- K(z) for P > 0.5 i
pqRTP l Fg(z) 5
- K(z) for P 5 0.5 0.5 THERMAL POWER where P =
RATED THERMAL POWER 4 SEQUOYAH - UNIT 2 Page 3 of 14 Revision 0
. . = _ - . - = - - - , - -
COLR FOR SEQUOYAH UNIT 2 CYCLE 8 2.5.1 Fg RTP = 2.40 2.5.2 K(Z) is provided in Figure 3. 2.5.3 The W(z) values required by TS SR 4.2.2.2 are provided in Figures 4 through 9. These figures provide a complete set of conservative W(z) values and provide sufficient information to determine W(z) versus core height for all cycle burnups. 2.5.4 Table A.1 shows Fo margin decreases that are greater than 2% per 31 Effective Full Power Days EFPD). These values shall be used to increase Fo (z) as per Surveillance Requirement 4.2.2.2.e. A 2% penalty factor shall be used at all cycle burnups that are outside the range of Table A.1. 2.6 Nuclear Enthalov Rise Hot Channel Factor - FAH (Specification 3/4.2.3) FAH $ FAH RTP * (1 + ppAH * [1 - P]) THERMAL POWER where P = RATED THERMAL POWER 2.6.1 RTP = 1.62 FAH 2.6.2 PFAH = 0.3 SEQUOYAH - UNIT 2 Page 4 of 14 Revision 0
COLR FOR SEQUOYAH UNIT 2 CYCLE 8 TABLE A.1 Fg Margin Decreases In Excess of 2% Per 31 EFPD Burnup Max % decrease (MWD /MTU) in Fg Margin 4733 2.03 4881 2.05 5029 2.06 5177 2.08 5325 2.11 5473 2.12 5620 2.11 5768 2.09 5916 2.06 6064 2.01 Note: All cycle burnups outside the range of the table shall use a 2% decrease in Fg margin for compliance with the 4.2.2.2.e Surveillance Requirements. Linear interpolation is adequate for intermediate cycle burnups. SEQUOYAH - UNIT 2 Page 5 of 14 Revision 0 l
COLR For Sequoyah Unit 2 Cycle 8 (.0s,231) (.as,231)
/' (Fuuv Wilhelrawn Itaghnf /
220 -
.os.225)'- -- -
. t.82,22 5)-
o BANK B : . . (0,210) ' '
- 200 - - - -
(1.0,182) l 180 - c160 -- R
- i
= . .
g 349 1 o BANK C . .
- a . . . .
- 2120 us i . . . .
j .2 g 5100 --
.a (0,85) ,
l o 80 - - - 4 o: BANK D - - g _ . . i 40 --
. . e .
- 20 - - -
1- - -- '- - (.19,0) ' j j j 0 0.2 0.4 0.6 0.8 1 (Fully inserted) Fraction of Rated Thermal Power FIGURE 1 Rod Bank Insertion Limits Versus Thermal Power Four Loop Operation Fully withdrawn region shall be the condltion where shutdown and control banks are at a position within the Interval of a 225 and s 231 steps withdrawa, inclusive. SEQUOYAH - UNIT 2- Page 6 of 14 Revision 0
J l COLR For Sequoyah Unit 2 Cycle 8 120 . . . . . . . . j i 110 -- ! : : (-1s,100) (e,100) : : : . 100 -- 90 unac' c epta'ble : - : --
- unace' eptatsle- -
I g Operation '
- Operation
$ 80 --
g, - . Accept able . ' a . : : ..dperation : : I E 70 - . . . 1 , e . l i c 60 --
- { {--[
, .a. 5g . . . . E : (-31,50) : : . (20,50) : :
- O 40 - - - -
g . 30 - - :- - - . - l - :- l 20 l
. . 1 10 - - -
0 40 20 -10 0 10 20 30 40 50 Flux Difference (delta 1) % FIGURE 2 Axial Flux Difference Limits As A Function Of Rated Thermal Dower SEQUOYAH - UNIT 2 Page 7 of 14 Revision 0
- COLR For Sequoyah Unit 2 Cycle 8 1
1 i
- 1.2 . . . .
j j ,j -. 4 . . . . l 1
- ----i-i 0.9 - - -
! li;0.8 --
- y . . .
o ' ' ' '
- n. 0.7 - - -
! O : : : :
- u. .
- e 0.6 --
e . . . . . ! m . . . . . I jO.5 w
- -l - - -{- - - - l- 6ohe ifeigh't!~ k(z)~
0.000 1.000 S0.4 - . . . .... : . . . . . . .s.000. . 1.000
; 10.800 , 0.940 12.000 0.925 0.3 --
0.2 - - - 1 0.1 - - -
' i i i i 0
0 2 4 6 8 10 12 Core Height (Feet) FIGURE 3 K(Z) - Normalized Fq(Z) as a Function of Core Height SEQUOYAH . UNIT 2 Page 8 of 14 Revision 0
COLR FOR CEQU3YAH UNIT 2 CYG3 8
=
HEIGHT MAX (Feet) W(z) 0.000 1.0000 ! 0.200 1.0000 0.400 1.0000 0.600 1.0000 0.800 1.0000 1.45 1.000 1.0000 1.200 1.0000 I 1.400 1.0000
^ -
1.600 1.0000 ; 1.800 1.2702 N- - 1.40 2.000 1.2485 v 2.200 1.2262 2.400 1.2039 2.600 1.1815 2.800 1.1575 3.000 1.1435 1.35 3.200 1.1400 3.400 1.1384 3.600 1.1357 3.800 1.1329 4.000 1.1325 o 4.200 1.1327 1.30 4.400 1.1318 o 4.600 1.1303 o 4.800 1.1284 O o 5.000 1.1272 v 5.200 1.1314 6000~ 1.25 o v o," 5.400 1.1497 I 5.600 1. u S2 l o 5.800 1.1795 o o 6.000 1.1930 o 6.200 1.2052 s
- 6.400 1.2161 1.20 o 6.600 1.2255 )
6.800 1.2334 a _ 7.000 1.2391 , 7.200 1.2436 i o 7.400 1.2483 C o I- 7.600 1.2520 1.15 " 7.800 1.2535 l
- v 8.000 1.2524
,o'Co-vo ^ 8.200 1.2527 8.400 1.2503 8.600 1.2451 1.10 8.800 1.2404 9.000 1.2467 9.200 1.2587 9.400 1.2666
- 9.600 1.2770 05 10.000 1.2901 10.200 1.3035 10.400 1.0000 10.600 1.0000 10.800 1.0000 1.00 11.000 1.0000 0 2 4 6 8 10 12 11.200 1 0000 11.400 1.0000 CORE HE::GET (FEET) ;;:':: :::::
12.000 1.0000 Figure 4 Sequoyah Unit 2 Cycle 8 RAOC Siimmary of Max W( z) at 150 MWD /MTU Page 9 of 14 Revision 0 SEQUOYAH - UNIT 2 (Top and Bottom 15% Excluded per Tech Spec 4.2.3.2 g)
.-s COLR FOR CEQUOYAH UNIT 2 CYCLE 8 RE3GHT MAX
' 50 0.000 1.0000 0.200 1.0000 0.400 1.0000-0.600 1.0000 0.800 1.000, 1.45 1.000 1.00f0 1.200 1.0003 1.400 1.0000
^ 1.600 1.0000 ,
N 1.40 1.800 2.06-1.2673 1.2459 I 1 v 2.200 1.2240 I 2.400 1.2019 l 2.600 1.1799 i 2.800 1.1560 1 3.000 1.1429 1.35 3.200 1.1403 3.'400 1.1385 3s600 1.1357 1 3.800 1.1332 4,000 1.1328 1*30 4.400 1.1320 a 4.600 1.1304 o 4.800 1.1244 O O 5.000 1.1267 5.20C 1.1298 j 1.25 m j % 9 5.u0 1.1466 5.600 1.1619
; 5.800 1.1761 l
0 a 6.000 1.1895 o 6.200 1.2015
^ ^
- 0 6.600 1.2217 6.800 1.2294
; 7.000 1.2350 o
7.200 1.2397
^ 7.400 1.2447 C 1.15 o g
o
- 7. 6u 1.2485 7.800 1.2500 O 8.000 1.2491 oooe m .
I vo- 8.200 1.2495 8.400 1.2472 8.600 1.2423 1.10 8.800 1.2381 9.000 1.2442 9.200 1.2551 9.400 1.2623 9.600 1.2732 9.800 1.2811
- 10.000 1.2886 10.200 1.3000 10.400 1.0000 10.600 1.0000 10.800 1.0000 1.00 11.000 1.0000 0 2 4 6 8 10 12 11.200 1.nu 11.400 1.0000 CORE EE::GET (FEET) it::: t::::
12.000 1.0000 Figure 5 Sequoyah Unit 2 Cycle 8 RAOC Summary of Max W(z) at 2000 MWD /MTU Page 10 of 14 Revision 0 SEQUOYAH - UNIT 2 (Top and Bottom 15% Excluded per Tech Spec 4.2.2.2 g)
COLR FOR CEQUOYAH UNIT 2 CYCLE 8 HEIGHT MAX l'*50 " * * * ' " 0.000 1.0000 0.200 1.0000 L. 0.400 1.0000 _, 0.600 1.0000 0.800 3. 0000 1.45 v. 1.000 1.0000 1.200 1.0000 1.400 1.0000
- e. 1.600 1.0000 1.800 1.2754
. 1.40 2.000 1 2502 v 2.200 1.2445 2.400 1.2284 p 2.600 1.2119
@ 2.800 1.1956 3.000 1.1758 N 1.35 3.200 1.1675 3.400 1.1714 3.600 1.1767 3.800 1.1811 4.000 1.1846 4.200 1.1867
.t.30 4.400 1.1875 l 4.600 1.1871 0 4.800 1.1854 5.000 1.1823
,v o 5.200 1.1801
- o e 5.400 1.1818 o
5.600 1.1978 v y S.800 1.2127 6.000 1.2252
- 6.200 1.2365
^ o o, ,n o 6.400 1.2459 4
1.20 o o - o 6.600 1.253s
~l 6.800 1.2589 a" * *0 o.o 7.000 1.2622 0
"3 7.200 1.2629 0
7.400 1.2611 C 1.15 v.600 7.800 1.2566 1.2491 8.000 1.2388 8.200 1.2288
.} 8.400 1.2162
~
~
8.600 1.2051 1.10 8.800 1.2006 9.000 1.2010 9.200 1.2015 9.400 1.1986
- 9.600 1.1962
,.800 1.2055 ;
1.05 10.000 1.2212 10.200 1.2355 10.400 1.0000 10.600 1.0000 10.800 1.0000 1.00 , 11.000 '1.0000 0 2 4 6 8 10 12 11.200 1.0000 11.400 1.0000 CORE HEIGHT (FEET) ;;:::: :::::: 12.000 1.0000 Figure 6 Sequoyah Unit 2 Cycle 8 RAOC Summary of Max W(z) at 8000 MWD /MTU SEQUOYAH - UNIT 2 Page 11 of 14 Revision 0 (Top and Bottom 15% Excluded per Tech Spec 4.2.2.2 g)
COLR FOR SEQUOYAH UNIT 2 CYCLE 8 HEIGHT MAX 1*.50 ** o " 0.000 1.0000 0.200 1.0000 0.400 1.0000 0.600 1.0000 1*45 " " ' "" 1.000 1.0000 i l 1.200 1.0000 1.400 1.0000
^ 1.600 1.0000 l N 1,40
- 1. 8 u 1.2a3 2.000 1.2545 v 2.200 1.2405 1 2.400 1.2261 6 2.600 1.2112 h 2.800 1.1960 3.000 1.1802 1.35 3.200 1. u a 3.400 1.1830 3.600 1.1901 3.800 1.1983 4.000 1.2059 ;
4.200 1.2117 1.30 y o _ 4.400 1.2158 o ^ 4.600 1.2182 i o 4.800 1.2187 O *
, o 5.000 1.2185 5.200 1.2231 1.25 o
- 5.400 1.2331 5.600 1.2493
)
o 0 { 5.800 1.2637 ' o o 6.000 1.2755 o vv" o o 6.200 1.2853 I o 6.400 1.2928 1.20- o e
. 6.600 1.2978 v
ob 6.800 1.3003
, 7.000 1.3001
- 7.200 1.2968 7.400 1.2902 7.600 1.2803
~
7.800 1.2670 8,000' 1.2508 8.200 1.2342 8.400 1.2155 8.600 1.2028 1.10 8.800 1.1955 9.000 1.1905 9.200 1.1879 9.400 1.1866 9.C00 1.1837
' ' " 2*"
1.05 10.000 1.2004 10.200 1.2147 10.400 1.0000 10.600 1.0000
- 10. u 0 1.0000 1.00 11.000 1.0000 0 2 4 6 8 10 12 11.200 1. 0 0 u 11.400 1.0000 '
CORE HEIGHT (FEET) ;;;':: :::::: 12.000 1.0000 Figure 7 Sequoyah Unit 2 Cycle 8 RAOC Summary of Max W(z) at 12000 MWD /MTU Page 12 of 14 Revision 0 SEQUOYAH - UNIT 2 (Top and Bottom 15% Excluded per Tech Spec 4.2.2.2 g)
. ~ . . . - , . . - - _ _ _ . . _ = - -
COLR FOR CEQUOYAH UNIT 2 CYCLE 8 HEIGHT MAX i 1 .50 g (Feet) W(s) 0.200 1.0000 0.400 1.0000 0.600 1.0000 0.800 1.0000 1.45 1. 0 n 1.000, 1.200 1.0PJO 1.400 1. r 0 0 0 A 1.600 1.0000 1.800 1.2605 1.40 2.no 1. 2 u S v 2.200 1.2323 2.400 1.2180 2.600 1.2033 2.800 1.1871 , 3.000 1.1763 1.35 3.200 1.1768 3.400 1.1849 3.600 1.1916 o ,," 3.800 1.2013 y 4.000 1.2114 4.200 1.2196 1.30 o o 4.400 1.2260 o n 4.600 1.2305 4.800 1.2326 O ^ o ' 5.000 5.200 1.2352 1.2464 1.25 e o 5.400 1.2666 5.600 1.2828 -
, 5.800 1.2965 e
o 6.000 1.3080 o y o 6.269 1.3168 o 6.4. 1.3230 1, *) Q a n yo 6.600 1.3:264 a
- c V 6.800 1.3269 oo 7.000 1.3244 7.200 1.3187 7.400 1.3098 7.600 1.2975 1.15 7.800 1.2816 8.000 1.2628 8.200 1.2431 8.400 1.2221 8.600 1.2093 1.10 ..,n 1.1,,,
9.000 1.1916 9.200 1.1889 9.400 1.1911
'.. 9.600 1.1911 9.800 1.1930 1.05 -
'10.000 1.1989 10.200 1.2123 l
10.400 1.0000 10.600 1.0000
*00 11.000 1.0000 t
! 0 2 4 6 8 10 12 11.200 1. n u 11.400 1.0000 CORE HEIGHT (FEET) ;;:::: :::::: 12.000 1.0000 Figure 8 Sequoyah Unit 2 Cycle 8 RAOC Summary of Max W(z) at 14000 MWD /MTU SEQUOYAH - UNIT 2 Page 13 of 14 Revision 0 (Top and Bottom 15% Excluded per Tech spec 4.2.2.2 g)
COLR FOR SEQt/0YAH UNIT 2 CYCLE 8
- HEIGHT MAX 1.50 """ "
0.000 1.0000 0.200 1.0000 0.400 1.0000 0.600 1.0000 0.000 1.0000 1.000 1.0000 1.200 1.0000 1.400 1.0000 A 1.600 1.0000 1.800 1.2564 1,4Q 2:000 1.2427 v 2.200 1.2290 2.400 1.2151 2.600 1.2009 2.800 1.1848 3.000 1.1765 1.35 ,oo, 3.200 1.1793 v 3.400 1.1886 3.600 1.1957 O
; 3.800 1.2068 4.000 1.2188 0 '*" * " ' '
. 4.400 1.2366 4.600 1.2424 4.800 1.2456 o 5.000 1.2498 o 5.200 1.2647 1.25 " o o 5.400 1.2899 5.600 1.3062 y y 5.800 1.3795 C 6.000 1.3307
. 6.200 1.3388 0 0
^ 6.400 1.3441 1.20 o ;
' 6.600 1. 3 u .
v "o v 6.800 1.3456 os 7.000 1.3415 7.200 1.3341 7.400 1.3232 C 1.15 ' ' " 7.800 1.2905 8.000 1.2694 8.200 1.2471 8.400 1.2237
. 8.600 1.2104 1.10 8.800 1.1993 9.000 1.1891 9.200 1.1854 9.400 1.1891 o 9.600 1.1897 1.05 ) 10.000 1.1927 10.20C 1.2060 10.400 1.0000 10.600 1.0000 10.800 1.0000 1.00 11.000 1.0000 0 2 4 6 8 10 12 11.200 1.0000 11.400 1.0000 CO:RE HEIGET (FEET) :::::: ::::::
12.000 1.0000 Figure 9 i Sequoyah Unit : Cycle 8 i RAOC Summary of Max W( ) at 15650 MWD /MTU ) SEQUOYAH - UNIT 2 Page 14 of 14 Revision 0 i (Top and Bottom 15% Excluded per Tech Spec 4.2.2.2 g) !
)}}