ML20203D772
| ML20203D772 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 12/09/1997 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20203D644 | List: |
| References | |
| NDIT-970160, NDIT-970160-R03, NDIT-970160-R3, NUDOCS 9712160285 | |
| Download: ML20203D772 (11) | |
Text
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-o Page 2 of 12 2: 8 OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 2 CYCLE 7.-
f 1.0 OPERATING LIMITS REPORT , This Operating Limits Report (OLR) for Braidwood Station Unit 2 Cycle 7 has been prepared in i accordance with the requirements of Technical Specification 6.9.1.9. 4 The Technical Specifications affected by this report are listed below: I' 3/4.1.1.3 Moderator Temperature Coefficient ! 3/4.1.3.5 Shutdown Rod insertion Limit ! 3/4.1.3.6 Control Rod insertion Limits- ' 3/4.2.1 Axlal Flux Difference l i 3/4.2.2 Heat Flux Hot Channel Factor - 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor L 2.0 OPERATING LIMITS i.
- 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 e
specified in Technical Specification 6.9.1.9. F 2.1 Moderator Temoerature Coefficient (Specification 3/4.1.1.3) j- 2.1.1 The Moderator Temperature Coefficient (MTC) limits are: , a. The BOL/ARO/HZP-MTC shall be less positive. than +3.5 x 10-8 Ak/k/*F.
- b. The EOL/ARO/RTP-MTC shall be less negative than -4.1 x 10" Ak/k/*F.
2.1.2 The EOL/ARO/RTP-MTC Surveillance limit is: 4 The 300 ppm /ARO/RTP-MTC should be less negative than or equal to -3.2 x 10" ak/k/*F. I , where: 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 j RTP stands for RATED THERMAL POWER 4
] ... 4 )' 9712160283 971209 ADOCK 0 '
%DR DR a
\
, NDIT 970160
, Rev.3 s
Page 3 of 1.' OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNTT 2 CYCLE 7 2.2 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5) 2.2.1 All shutdown banks shall be withdrawn to at least 228 steps. 2.3 C.grtrol Rod insertion Limits (Specification 3/4.1.3.6) 2.3.1 The control banks shall be limited in physical insertion as shown in Figure 1. 2.4 Axial Flux Difference (Specification 3/4.2.1) 2.4.1 The AXIAL FLUX DIFFERENCE (AFD) target band is +3,-12% of the target flux difference. 2.4.2 The AFD Acceptable Operation Limits are provided in Figure 2.
, NDIT 970160 Rev.3
}.,# Page 4 of 12 OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 2 CYCLE 7 2.5 Heat Flux Hot Chanr,el Factor (Specification 3/4.2.2) 2.5.1 Fo(Z) s [F$"/P)[K(Z)) for P > 0.5 Fo(Z) s [F$"/0.5][K(Z)] for P s 0.5 where: P = the ratio of THERMAL POWER to RATED THERMAL POWER F$" = 2.60 K(Z) is provided in Figure 3. 2.5.2 F'y = F"n"[1 + 0.2(1 P)] F"J' limits within specified core planes shall be: For Core Life from greater than or equal to O MWD /MTU to less than or equal to 4,000 MWD /MTU:
- a. For the lower core region from greater than or equal to 0% to less than 22%:
- 1) F"," s 2.271 for all core planes containing bank "D" control roos
- 2) F"y" s 1.989 for all unrodded core planes .
- b. For the lower core region from greater than or equal to 22% to less than or equal to 50%:
- 1) F"," s 2.271 for all core planes containing bank "D" control rods
- 2) F"n" s 1.942 for all unrodded core planes
- c. For the upper core region from greater than 50% to less than or equal to 100%:
- 1) F"" s 2.271 for all core planes containing bank "D" control rods
- 2) F*n" s 1.925 for all unrodded core planes
, NDIT 970160
, Rev.3
. . Pap 5 of 12 OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 2 CYCLE 7
. For Core Life from greater than 4000 MWD /MTU to End of Core Life:
- e. For the lower core region from greater than or equal to 0% to less than 22%:
- 1) F"[ s 2.271 for all core planes containing bank "O" control rods
- 3) F"[ s 1.779 for all unrodded core planes 4
- f. For the lower core region from greater than or equal to 22% to less than or equal to 50%:
- 1) F"[ s 2.271 for all core planet containing bank "D" control rods
- 2) F"[ s 1.867 for all unrodded core planes
- g. For the upper core region from greater than 50% to less than or equal to 100%;
- 1) F"[ s 2.271 for all core planes containing bank "D" control rods
- 2) F"[ s 1.925 for all unrodded core planes 2.5.3 A plot of [Fo(z)
- Pa.i] vs Axial Core Height for bumups greater than or equal to O MWD /MTU and less than or equal to 4,000 MWD /MTU is provided in Figure 4 and Table 1 contains the data plotted in Figure 4.
' A plot of [Fo(z)
- Pn,] vs Axial Core Height for bumups greater than 4,000 MWD /MTU to End of Com Life is provided in Figure 5 and Table 2 contains the data plotted in Figure 5.
2.6 Nuclear Enthalov Rise Hot Channel Factor (Specification 3/4.2.3) l F1 s F8[1.0 + PFe(1.0 - P)] where: P = the ratio of THERMAL POWER to RATED THERMAL POWER F"8 = 1.70 PF, = 0.3 t r i i i
- ' '~ _ _ . . . _ . . . .-
\ NDIT 970 leu Rev.3 Page 6 of 12 l- OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 2 CYCLE , . Figure 1: Control Bank Insertion Limits Versus Percent Rated Thermal Power (29%.228) (79 %,228) 2s --- - 220 -
/- /
. /
,00 _ /
BANKB 180 - - - - - - - - ~ - - - - - - - - - - 160 -- ---- (100 %,161) l(0%,162) L
'i!?
3 -
!!' 140 -..... . -. . - . . .... .
3 5 t ' g120 ---
--BANKd~ .
' - - ~ ~ ~ ~ ~ -
t o e { 100 - - - - - - - - -- - - - - - - -- -
.at m
T E 80 - - - - - - BANK D 60 - - - -
* (D%,47) 40 - ---
, e 20 - - - . - - . - --. . . - . , ..
(30%,0) 0-- .-
- - . - - - - - ~ ~ - - - - - . __
0 to 20 30 40 50 60 70 80 90 100 Relative Power (Percent)
. NDIT 970160 Rev 3
- ')
? Page 7 of 12 OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 2 CYCLE 7 FIGURE 2: Axial Flux Difference Limits As A Function of Rated Thermal Power r
i- I.. n l6 e
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UNACCEPTXBEE- UNACCEPTABLE --- OPERATION \ OPERATION so -._
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-50 -40 30 20 10 O 10 20 30 40 50 i
Flux Difference (al) % '
*a Figure 3: K(Z)- Norm:lized Fa(Z) Ao A Function of Core Height c.
1.1 , i i :
' l .
l ! + (0.0.1. ) l (6.'0.1.0) ! 14 , t I l (12.0 .925) 0* ! ! i 1 i $
! 1 E 0.8 - - - - - - - - - - - -
-- l ,
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h i-
! l r p
0.7 - l M i O , a
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l -- 2f To 1 -* 3 y 0.5 --- - -- - --- - - - -
- - - - - - - - - - - - ;---------- - -- - - - - - - h U it 0.41 , -
-+-- LOCA Limdeng Envelope" 4 0.3 . - - - - - ---- - - - - - - - -- -- -- --
- - - - - - - - - - - - - 8 n
0.2 -- - - - - - - - -- - - - - - - - -
-N--- I u
t kn - 0.1 - - - -- - - - - - - - --- -
---l- r M
i
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0I , i I
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'n _ 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13- $WD BOTTOM . Q :.
CORE HEIGHT (FT) TOP UYE P
~.
r, Figure 4: FQ(Z)*P versus Core Ileight (0<Bil<4,000 MWD /MTU)
$ (60,240) 2 60 . s:3 m-g i
- ni a=a - p-m m:n ~ -- ~ ~ - --
-I- - ~
m'9 g a-a fa m., : 2.40 --
\~
b .
-f e-a . " '
' c E
2.20 -
-i- - - - - -- - -- - - -
- a. (12.0.2.405) $
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p
- s 2.00 -
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- {- --
M : { w i,80 .__ _; _ ___. _.__. co o
- n. :
I.60 --J -- ---. ----- --- ----- - : i E w d f : 3 M 1.40 --
- LOCA Limiting Envelope g
r - - - I o
--m-Fxy Limit Analysis Points g
@ 1.20 -- * Bodons . :Surveillance Limit 3
, j ; : .
e-+--Top Surveillance . : .Limir . g 3.00 . . _ .
- to o,
A o go _ _ _ . __ {_ . _ G g 0 60 Ib U
-I- .
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- 7 - - -
u 0 20 -
- Q p
0 00
". l : m
^
. ~s 00 1.0 20 30 41) 50 60 7.0 NO 9.0 7 10.0 I I .0 12.0 2 d BorroM CORE IIEIGIIT (FT) 2 H gop e
- 2. ?o3 *,
C L. 8
Figure 5: FQ(Z)*P versus Core licight (4,000 sm
;0.6259Y - ?11702;:: 32.6000.s ;
i0.8763L s
+
2.5542 > 2.60(D l [1.1267{ , (2.8917i : 16000
- 1.37711 42.5665; , 12.6000 ~-
r h il.6274h - -
-Lw 2.5055 m m aa m.2.6000 ma 1.8778 2.5957 2.6000 2.1282 2.4080 2.6000 2.3786 2.5452 2.6000 2.6290 2.5998 2.6000 2.8793 2.5602 2.6000 3.1297 2.5752 2.6000 3.3801 2.5858 2.6000 3.6305 2.5966 2.6000 3.8808 2.3975 2.6000 4.1312 2.5951 2.6000 4.3816 2.5978 2.6000 4.6320 2.5889 2.6000 !
4.8823 2.5761 2.6000 5.1327 2.5587 2.6000 5.3831 2.5313 2.6000 5.6335 2.3075 2.6000 5.8839 2.4798 2.6000 6.1342 2.4664 2.5956 6.3846 2.4872 2.5875 6.6350 2.5104 2.5794 6.8854 2.5274 2.5712 7.1357 2.5224 2.5631 7.3861 2.3752 2.5550 7.6365 2.5435 2.5468 7.8869 2.5369 2.5387 8.1372 2.5219 2.5305 8.3876 2.4990 2.5224 8.6380 2.4699 2.5143 8.8884 2.3954 2.5061 9.1388 '?.2968 2.4980 9.3891 2.3810 2.4899 9.6395 P.3499 2.4817 9.8899 2.3407 2.4736 10.1400 , 2.3202 _ 2.4654_ , , 010.3910;
~
_N, 2.2885 j2A5731 ' 510.6410.: 12.1692s :2.4492: t
. t10.8910: g.w v23871;;- l2.4410;
- lli;1420" s 4 18363
' M2A329E WG 1;39205 h;8502i i '
71 @ 8U, 11:7680s: 10.7079: 2.4125:: Unshaded area shows surveillan:e region. Shaded area (top and bottom 15W is ignored.
NDIT 970160
,9 Rev.3
(,,* Page 12 of 12 OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 2 CYCLE 7 Table 2: IF4z)
- P.,;) vs Axial Core Heightf4.000 MWD /MTU<BU< EOL)
Fq SPIL Core Height (feet) MaxFaxP UMIT c+ :p0.2504# , : 0.80643. . L2.6000 ; s 0.6259 # tisB7364 ?' 12.60005
- 0.87631 " > A2.24772 ?2.60001
- e 31.1267) , . , . 2.3950 <
't e .
~ ,'[L3771$ p; *_?24843 J ,j260001 mall.6274ka 22d d .5589. h wd2.6000L;.a 1.8778 2.5957 2.6000 2.1282 24210 2.6000 2.3786 2.5350 2.6000 2.6290 2.5183 2.6000 2.8793 2.5941 2.6000 3.1297 2.5366 2.6000 3.3801 2.4946 2.6000 3.6305 2.4993 2.6000 3.8808 2.3054 2.6000 4.1312 2.4954 2.6000 4.3816 2.4979 2.6000 4.6320 2.4895 2.6000 4.8323 2.4772 2.6000 5.1327 2.4604 2.@0 5.3831 2.4341 2.6000 5.6335 2.2189 2.6000 5.8839 2.3845 2.6000 6.1342 2.4664 2.5956 6.3846 2.4872 2.5875 6.6350 2.5104 2.5794 6.8854 2.5274 2.5712 7.1357 2.5224 2.5631 7.3861 2.3752 2.5550 7.6365 2.5?35 2.5468 7.8869 2.5369 2.5387 8.1372 2.5219 2.5305 8.3876 2.4990 2.5224 8.6380 2.4699 2.5143 8.8884 2.3954 2.5061 9.1388 2.2968 2.4790 9.3891 2.3810 2.4879 9.6395 2.3753 2.4817 0.8899 2.4020 2.4736 10.1400 2.4166 2.4654 m q qo,39101 w 12.4032 ' 9 2.4573? '
;:110.6410; s2.3189 ) 12.4492:;
Y
- i10.8910':: >
f 2.29491 C . 12.44100
; ifl1;1420l '
,2.2077 pn 42A329; p# M1.39201 M1.8533T
';4242481 f 11.76801 0.8379e r 12.4125!
Unshaded area shows surveillance region. Shaded area (top and bottom 15%) is ignored. __ _______ _ _ - _ - - --- ----- - - - - - - - - - - - "}}