ML20096B239
| ML20096B239 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/17/1995 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20096B235 | List: |
| References | |
| NUDOCS 9601160118 | |
| Download: ML20096B239 (14) | |
Text
.. .
t u vmoc so" QARECORD l
SEQUOYAH NUCLEAR PLANT UNIT 2, CYCLE 7 I
CORE OPERATING LIMITS REPORT l
REVISION 1 November 17, 1995 l
Prepared:
c- , M / tl-12-95 NucleaiNfuel Date l
Reviewed:
/ //- 2 7- 9 S~
qq f
React 15r En ineering Supervisor Date l
b $k / 1(
Technical Support Manager Date
/
PORC dh' air %sn
'Ddte l
l Revision 1 Pages affected 4. 9 - 16 Reason for Revision To: (1) allow the use of an upda'ad calculational method to Derform Heat Flux Hot Channel Factor I surveillance. (2) to provide revised W(z) information to allow l implementation of Technical Suecification chance 95-03. and (3) to delete W(z) information which is no loncer acolicable.
SEQUOYAH - UNIT 2 Page 1 of 14 Revision 1 l
9601160118 960102 PDR ADOCK 05000328 P PDR L
l COLR FOR SEQUOYAH UNIT 2 CYCLE 7 l l
l l
1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Sequoyah Unit 2 cycle 7 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)
I 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 Nuclear Enthalpy Hot Channel Factor (F NAH)
I 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 l 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 Temeerature coefficient - MTC (Specification l 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 -1.9 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
~4 equal to -4.5 x 10 Ak/k/ F.
SEQUOYAH - UNIT 2 Page 2 of 14 Revision 1
COLR FOR SEQUOYAH UNIT 2 CYCLE 7 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. ,
2.2 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5) 2.2.1 The shutdown rods shall be withdrawn to a position as defined below: ;
Cycle Burnuo (MWD /MTU) Stens Withdrawn
, l 1 1 4,000 2 226 to $ 231
> 4,000 to < 14,000 2 222 to 1 231 2 14,000 2 226 to 5 231 2.3 Control Rod Insertion Limits (Specification 3/4.1.3.6) 2.3.1 The control rod banks shall be limited in physical insertion as shown in Figure 1.
l l
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.
2.5 Heat Flux Hot Channel Factor - F g (Specification 3/4.2.2) pqRTP Fg(z) 6
- K(z) for P > 0.5 P
pqRTP Fg(z) $
- K(z) for P $ 0.5 THERMAL POWER where P =
RATED THERMAL POWER SEQUOYAH - UNIT 2 Page 3 of 14 Revision 1
. . _ _ _ . . _ _ _ _ . _ _ _ _ _ _ - - _ _ _ _ _ _ _ _ _ _ . - . _ __ _ _ _ . _ . . . _ . = _ _ _ _ _ ..
l '.
i l
COLR FOR SEQUOYAH UNIT 2 CYCLE 7 l 1
i
) I 2.5.1 FgRTP = 2.40 2.5.2 K(Z) is provided in Figure 3.
f 2.5.3 The W(z) values required by TS SR 4.2.2.2 are ,
provided in Figures 4 through 9. These figures j
- provide a complete set of conservative W(z) values
- and provide sufficient information to determine W(z) ;
j versus core height for all cycle burnups. j t
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 Fg (z) as per j Surveillance Requirement 4.2.2.2.e. A 24 penalty j
factor shall be used at all cycle burnups that are outside the range of Table A.1.
J
- 2.6 Nuclear Enthalov Rise Hot Channel Factor - FAH N !
j (Specification 3/4.2.3) j FAH $FAHRTP * (1 + pyAH * [1 - P])
THERMAL POWER l
where P = ;
4 RATED THERMAL POWER I
f 2.6.1 FAH = 1.62 2.6.2 PFAH = 0.3 Page 4 of 14 Revision 1 SEQUOYAH - UNIT 2
4 . .
COLR FOR SEQUOYAH UNIT 2 CYCLE 7 i
TABLE A.1 l
l l Fg Margin Decreases In Excess of 2% Per 31 EFPD l
i
' Burnup Max % decrease (MWD /MTU) in Fg Margin 889 2.40 1037 2.63 1185 2.68 1333 2.54 1481 2.30 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 l
burnups.
SEQUOYAH - UNIT 2 Page 5 of 14 Revision 1
1 COLR For Sequoyah Unit 2 Cycle 7
(.65,231) 2 3 1 (.09,231) , ,
, (Fuuy Withdrawn Region). ., ,
220 ;/(.oe.2223: - - - - ,
, t.s t,2 2 2r ,- - - -
l
/ o BANK B . .
(0,210) ' '
200 : 1 i--- --:
(1.0,182) 180 - - - -
c 160 :
.a . . . . ,
[
'" 140 -- -
- n. o BANK C .
a . .
.e . . . .
us . . . .
j i --
,5 100 .
(0,85) l ',
.a ,
80 - - - ----- -
o
- : : c: BANK D 60
- -l - -
---}-
40 --- - - - - --- ---
20 -- - -
(.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 reglon shall be the condition where shutdown and control banks are at a position within the interval of A 222 and 1231 steps withdrawn, inclusive.
Fully withdrawn shall be the poeltion as defined below, Cvele Burnuo (mwd /MTUI Sten Withdrawri 1 4000 1228 to 1231
> 4000 to < 14,000 1222 to 1231 1 14,000 1226 to 1231 SEQUOYAH - UNIT 2 Page 6 of 14 Revision 1
J
- t. . .
! COLR For Saquoyah Unit 2 Cycle 7 1,
0 120 . . . . . . .
I
- j
' -...........a ... ... ....s ...s . . . . . . . . . . . .
1
)
. . (,15,100) (6,10'0) . . .
100 --
90 thrac'ceptable 3
- - Unacdeptable -
l[; Op:eration : Ope, ration g 80 -
- : - -: - - - i -: -
- n. -
Accepiable. -
. . . peration . . . . .
N -. . ., . . .,. . . . . . . ,. . . . . . . . , . . , . . , . . . . , .
E
. e -;-- ; -;
lE 60 -
a . . . . . . .
e . . . . . .
iii 50 --
(-31;50) : -
- (20;50)
Et . , ,
o 40 --
30 - . . .
20 - - '. -.-i:-- -
i- :- :--
10 --; ; ;:- --: i --:---; -
i i r i i i i r g
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 Power SEQUOYAH - UNIT 2 Page 7 of 14 Revision 1
1 COLR For Sequoyah Unit 2 Cycle 7 1.2 . . . . .
1.1 -'.--
1 . . .
0.9 - -
(
J
. . . . i g . .
l o.
. 0.. '
C . : : :
- u. . . . . .
c e
o.6 --
-l----
-l.-
.t!
- g Oa5
- : --:- Core Height: K(2) I w - - -
0.000 1.000 o . . . .
0 **0 . ' 000 -
z 0.4 -:---- . .
.. 10.800 .' O.940 12.000 0.925 0.3 .- . . . . . . . . . . . ..
0.2 - -- - - - -
0.1 --
0 O 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 1
)
- COLR FOR SEQUOYAH UNIT 2 CYCLE 7
' ' HF.IGirr m ^
(FEET) w(z) 1.50 0.0000 1.0000 0.2000 1.0000 0.4000 1.0000 0.6000 1.0000 02000 1.0000 ,
1.45 1.0000. 1.0000 l 1.2000 1.0000 !
1.4000 1.0000 1.6000 1.0000 1 A000 1.2504 1.40 2.0000 1.2305 2.2000 1.2103 2.4000 1.1901 2.6000 1.1699 1.35 2.8000 1.1489 3.0000 1.1339 3 2000 1.1288 CSI 3.4000 1.1300 3M 1.13n 3 1*30 3 2000 1.1315
- 4.0000 1.1311
- 4 2000 1.1300 4.4000 1.1281 i
- f 4.6000 1.1253 l 1.25 * ....*
- 43000 1.1245 l '
5.0000 1.1274 l f4 - 5.2000 1.1359 O
- 5.4000 1.1499
- 5.6000 1.1648 h 1.20 5.8000 1.1787 6.0000 1.1915 6.2000 1 2032 6.4000 1.2135 l 6.6000 1.2225 1.15 -
6.8000 1 2299 g ,
^^
7.0000 12352 7.2000 12395 7.4000 1.2443 7.6000 1 2477 1.10 7.8000 1.2488 8.0000 1.2475 '
8.2000 1.2438 -
8.4000 12374 #
1.05 8.6000 12282 I 8.8000 1.2197 9.0000 1.2276 f t
9.2000 1.2435 9,4000 1.2553 )
1.00 i 10 12 9.6000 1.2722 2 4 6 8 92000 1.2845 i 0
10 2 13037 l CORE HEIGHT (FEET) 10.2000 13381 !
)
10.4000 1.0000 i
10.6000 1.0000 tom 1** l Fi Eure 4 u.0000 1.0000 11.2000 1.0000 e
} 46000j SEQUOYAH UNIT 2 CYCLE 7
}[.h000j,.N0 f RAOC
SUMMARY
OF MAX W(Z) AT 150 MWD /MTU j aum wnowncmuo a mucumeuna
\
l Page 9 of 14 Revision 1 i SEQUOYAH-UNn 2 i i
. COLR FOR SEQUOYAH UNIT 2 CiCLE 7 nalcar au WEET) W(z) 1.50 '
O.0000 1.0000 0.2000 1.0C00 0.4000 1.0000 0.6000 1.0000 1*45 Om 1.0000 1.0000 1.0000 1.2000 1.0000
. 1.4000 1.0000 1.6000 1.0000 1.40 1.8000 1.2795 2.0000 12557 22000 1.2311 2.4000 1.2064 2.6000 1.1815 1.35 . 2.8000 1.1552
^ 3.0000 1.1389 tg 3 2000 1.1331 v 3.4000 1.1303 3.6000 1.1279 3 1.30
- 3.8000 1.1248 4.0000 1.1204 4.2000 1.1175 4.4000 1.1176 4.6000 1.1165 1.25 -
4.8000 1.1149 E4 - 5.0000 1.1159 O
- 5 2000 1.1234
^
5.4000 1.1372 N 5.6000 1.1505 l'.20 5.8000 1.1629 6.0000 1.1738 6.2000 1.1856 6.4000 1m 1*15 6.6000 1 2135
- 6.8000 12255 CO '- .
7.0000 1.2359
"**" 7.2000 1.2446 7.4000 1.2517 1.10 7.6000 1 2568 7.8000 1.2593 8.0000 12f93 8.2000 1.2564 8.4000 1.2506 1.05 -
8.6000 1.2419 8.8000 12296 9.0000 1.2344 9.2000 1.2496 9.4000 1.2601 1.00 9.6000 1.2753 0 2 4 6 8 10 12 9.8000 1.2958 10 N 13184 CORE HEIGHT (FEET) 10.2000 1 3425 10.4000 1.0000 10.6000 1.0000 to 8* ta Fi Sure 5 11.0000 1.0000 11.2000 1.0000 SEQUOYAH UNIT 2 CYCLE 7 }f,h fh RAOC
SUMMARY
OF MAX W(Z) AT 3000 MWD /MTU }[8] {$ TOP AND BCrtTOM 13% EXCLUDED AS PERTECH SPEC A2.110 Revision 1 Page 10 of 14 SEQUOYAH - UNIT 2
! " ' COLR FOR SEQUOYAH UNIT 2 CYCLE 7 2 . .
HEIGHT MAX (FEET) W(2)
- 1.50 0.0000 L0000 0 1000 1.0000 0.4000 1.0000 0.6000 1.0000
- 1.45 0.8000 1.0000 4 1.0000 1.0000 .
1.2000 1.0000
. 1.4000 .1.0000 1.6000 1.0000 1.40 1.8000 1.2729 2.0000 1.2549 2.2000 1.2372 2.4000 1.2210 2.6000 1.2051 1.35 2.8000 1.1884 n 3.0000 1.1756
.tg 3.2000 1.1679 v 3.4000 1.1634 3.6000 1.1613
. 3 1.30 3.8000 1.1578 4.0000 1.1552
- 4 2000 1.1549 4.4000 1.1554 4.6000 1.1547 1.25 42000 1.1525 1
g .
,' . . 5.0000 1.1508 O -
5.2000 1.1494
. 5.4000 1.1515
> . ^
5.6000 1.1640 4 1.20 .
- 5.8000 1.1759
- 6.0000 1.1855
, 6.2000 1.1952
.^ . i 6.4000 1.2054
.....* ^
1.15 6.6000 1.2144 6.8000 12217 i m 7.0000 1.2273 7.2000 12309 7.4000 12322 1.10 7.6000 1.2311 l 7.8000 1.2275 8.0000 1.2214 8.2000 1.2127 ' 8.4000 1.2012 1 1.05 8.6000 1.1865 8.8000 1 1694 9.0000 1.1666 9.2000 1.1776 9.4000 1.1927
.00 0 2 4 6 8 10 12' 9.6000 1.2085 9.8000 1.2271 10.m 1.2457
- - CORE HEIGHT (FEET) 10.2000 1.2624 10.4000 1.0000 10.6000 1.0000 Figure 6 ,- 10.8000 t0000 11.0000 1.0000 11.2000 1.0000 SEQUOYAH UNIT 2 CYCLE 7 }};h '};$ RAOC
SUMMARY
OF MAX W(Z) AT 7000 MWD /MTU } };$ 10P AND BOTTOW 13% EXCLUDED AS PtA TECH SPEC d 111C J Page 11 of 14 Revision 1 SEQUOYAH - UNIT 2
COLR FOR SEQUOYAH UNIT 2 CYCLE 7
- HEIGHT MAX (FEET) W(Z) 1.50 0.C000 1.0000 0.2000 1.0000 1
0.4000 1.0000 0.6000 1.0000 1*45 0.8000 1.00C0 1.0000 1.0CC0 12000 1.0CCO 1.4000 1.0000 1.6000 1.cc00 1.40 1.8000 1.2591 2.0000 1.2480 2.2000 12379 2.4000 12301 2m 12226 1.35 23000 1.2149 3.0000 1.2047 l h m 3.2000 1.1968 3.4000 1.1966 1 3.6000 1 2004 3 1.30 3.8000 12025 4.0000 12066 , 4 2000 1.2114 4.4000 1.2132 4.6000 12136 1.25 , . . 4 3000 1.2127 (2a ^ - 5.0000 12098 O .
. ^^**
- - 5.2000 1.2051 5.4000 12051
.* l
- 5.6000 1.2188 M 1.20 .. ^
53000 1.2312 l 6.0000 1.2409 6.2000 1.2486 6.4000 1.2530 1.15 , , 6.6000 12552
- 6.8000 12552 g * . 7.0000 12528 7.2000 12479 7m 12405 1*10 7.6000 1.2304
, 7.8000 -1.2176 1 8.0000 1.2022 8 2000 1.1839 8.4000 1.1634 1.05 8.6000 1.1437 8 3000 1.1268 9.0000 1.1198 9.2000 1.1239 9.4000 1.1366 1.00 9.6000 1.1499 0 2 4 6 8 10 12 9.8000 1.1632
~
10m 1.1767 CORE HEIGHT (FEET) 10.2000 1.1909
. 10.4000 1.0000 10.6000 1.0000 1
Figure 7 10.8000 1.0000 11.0000 1.0000 t 11.2000 1.0000 fj4[j,0000 SEQUOYAH UNIT 2 CYCLE 7 RAOC
SUMMARY
OF MAX W(Z) AT 12000 MWD /MTU }},8g jh TCP AND B01 TOM 13% EXCLUDED AS PEP; TECH SPEC 41110 l SEQUOYAH - UNIT 2 Page 12 of 14 Revision 1
~^ ~ ~'
COLRFOR SEQUOYAH UOIT 2 C CLE 7 ascar sux ZI 1.50 0m00 1.0000 0.2000 1.0000 0.4000 1.0000 0.6000 1 2 00 0.8000 1.0C00 l 1.45 '
. 1.0000 1.0000 1.2000 1.00C0 1 A000 1.0000 1 M 1.0000 1.40 '
1.8000 1.2643 2.0000 12526 l 2.2000 1.2415 l I 2A000 12317 2.6C00 12219 1.35 2.8000 1.2116
,, 3.0000 1.2001 3.2000 1.1935 g
v 3.4000 1.1968 3.6000 1.2041 3 1.30 3.8000 1.2102
. .. " 4.0000 1 2167 41000 12229
. ^ 4.4000 12264 4.6000 1.2282 1.25 . ^
4.8000 12285 N , 5.0000 1.2262 51000 12261 O '. 5.4000 1.2343 5.6000 1.2490 N 1.20 , 5.8000 1.2618 6.0000 1.2720 6.2000 1.2798
- 6.4000 12844 1*15 * ..- 6.6000 1.2865 6.8000 12859 CO 7.0000 1.2827 72000 1.2766 7.4000 1.2676 7.6000 12557 1.10 ..- l 7.8000 1.2407 I 8.0000 1 2229 82000 12017 8.4000 1.1787 1.05 8.6000 1.1600 8.8000 1.1459 9.0000 1.1407 9.2000 1.1418 9.4000 1.1479 1.00 9.6000 1.1582 4 6 8 10 12 0 2 9.8000 1.1717 10 0000 1 1857 CORE. HEIGHT (FEET) 10.2000 1 2002 10.4000 1.0000 10.6000 1.0000 Figure 8 10m00 1m00 11.0000 1.0000 11.2000 1.0000 SEQUOYAH UNIT 2 CYCLE 7
}}',h }$
RAOC
SUMMARY
OF MAX W(Z) AT 14000 MWD /MTU jj;8j};0 l mp AND BOTTOW lM EXCWDED AS PERTECH $PEC 41110 SEQUOYAH - UNIT 2 Page 13 of14 Revision 1
. ; COLR FOR SEQUOYAH UNIT 2 CYCLE 7 ' ' HEfCMT W ,
1 (FEET) w(z)
- 1.50 0.0000 1.0000 0.2000 1.0000
' 0.4000 1.0000 O.6000 1.0000 i 1.45 03000 1.0000 1.0000 1.0000 1.2000 1.0000 1.4000 1.0000 1.6000 1.0000 1.40 1.8000 1.2765 2.0000 1.2632 2.2000 1.2493 2.4000 '1.2342
, 2.6000 1.2183 1.35 . 2.8000 1.2014
^ . . 3.0000 1.1863 3.2000 1.1831 t4
- 3.4000 1.1950 v
3m 1.2107 3 1*30 ' 3.8000 1.2260 4.0000 1.2384 4.2000 1.2478
-. , 4.4000 1.2552 i
- 4m 1.2602 1.25 -
4.8000 1.2636 N . 5.0000 1.2626 5.2000 1.2740 O - 5m 13027
- 5.6000 1 3197
>f 1. 20 .
5.8000 13335 6.0000 13451 6.2000 13533 6m 13586 1.15 6.6000 1.3605 6.8000 13591 CO 7.0000 13542 7.2000 1 3456 l 7.4000 1 3334 l 7.6000 1 3174 j 1.10 7.8000 1.2975 l 8.0000 1.2746 8.2000 1.2468 8.4000 1.2182 1.05 8.6000 1.2024 8.8000 1.1955 9.0000 1.1951 9.2000 1.1896 9.4000 1.1794 1.00 9.6000 1.1827 , 4 6 8 10 12 ' 0 2 9.8000 1.1966 10m 1.2119 CORE' HEIGHT (FEET) 10.2000 1.2278 10.4000 1.0000 to m 2 "
; Fioure e 9 10.8000 1.0000 11.0000 1.0000 11.2000 1.0000 SEQUOYAH UNIT 2 CYCLE 7 }} $ } $
RAOC
SUMMARY
OF MAX W(Z) AT 18400 MWD /MTU jj,8y jy Tor AND 801 TOW Im EXCLUDED A3 PEIL TECH SPEC 4.2.2.2.0 Page 14 of 14 Revision 1 SEQUOYAH - UNIT 2
. - _ _ _ _ . _}}