ML20091L106
| ML20091L106 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 08/25/1995 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20091L088 | List: |
| References | |
| NUDOCS 9508280302 | |
| Download: ML20091L106 (7) | |
Text
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l ATTACHMENT Byron Unit 2 Cycle 6 Operating Limits Report (OLR)
Revision 1 f
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4 7508280302 950825
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PDR ADDCK 05000455 P
REVISION 1 CYRON UNIT 2 CYCLE 6 i
4 OPERATING LIMITS REPORT - Fxy PORTION This liadial Peaking Factor Limits Report is provided in accordance with paragraph 6.9.1.9 of the Byron Unit 2 Nuclear Plant Technical Specifications.
The Fxy limits for RATED THERMAL POWER within specified core planes for Cycle 6 shall be:
a: For the lower core region from greater than or equal to 0% to less than or equal to 50%:
- 1) For all core planes containing bank "D" control rods:
~
F%"s 2.052 Cycle Bumup 2 0 MWD /MTU
- 2) For all unrodded core planes:
pMPs 1.765 0 s Cycle Bumup s 12M00 MWD /MTU FNs 1.774 Cycle Bumup > 12,000 MWD /MTU b: For the upper core region from greater than 50% to less than or equal to 100%:
- 1) For all core planes containing bank "D" control rods:
F#Ps 1.944 Cycle Burnup 2 0 MWD /MTU 1
- 2) For all unrodded core planes:
i FN's 1.750 0 s Cycle Bumup s 12,000 MWD /MTU F%"s 1.786 Cycle Bumup > 12,000 MWD /MTU These Fxy(z) limits were used to confirm that the heat flux hot channel factor FQ(z) will be limiMd to the Technical Specification values of Fo(z) s I2.50l[K(Z)]
for P > 0.5 and, P
Fo(z) s [5.00][K(Z)]
for P s 0.5 assuming the most limiting axial power distributions expected to result from the insertion and removal of control Banks C and D during operation, including the accompanying variations in the axial xenon and power distributions as described in the " Power Distribution Control and Load Following Procedures," WCAP-8403, September,1974. Therefore, these Fxy limits provide assurance that the initial conditions assumed in the LOCA analysis and the ECCS acceptance criteria of 10 CFR 50.46 are met.
T See Figures 1 and 2 for the plots of [ Fo (z) x P,.i] Versus Axial Core Height and Tables 1 and 2 for the data plotted in Figures 1 and 2.
REVISION 1 BYRON UNIT 2 CYCLE 6 OPERATING LIMITS REPORT-MTC PORTION 4
a)
The Moderator Temperature Coefficient (MTC) limits are:
- 1) The BOL/ARO/HZP-MTC shall be less positive than 0 Ak/k/ F.
- 2) The EOL/ARO/RTP-MTC shall be less negative than -4.1 x 10" Ak/k/ F.
b)
The MTC surveillance limit is:
The 300 ppm /ARO/RTP-MTC should be less negative than or equal to
-3.2 x 10" Ak/k/ F.
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 RTP stands for RATED THERMAL POWER 1
O Figure 1 Byron Unit 2 Cycle 6 FQ(Z) x P versus Core Height Bumup Range of 0 to 12K MWDIMTU (6.0,2.50)
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[
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DI I
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(12.0.2.31)l' e
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-A B-E_E E"E a
2.400 m
g _, e a t
m:-
a a
e a
aa l
g 2.200 m
2.000 l
l m-
=
1.800 a
F.y Limit Analysis Points
{
m g
3 1.600
- - * - - Bottom Surveillance Limit LOCA Limiting Envelope O
n.
$ 1.400 l
- - + - - Top Surveillance Limit l
i=
p 5
un 1.200 DC n
R 1.000 o
s 0.800 5-I f
0.600 l
0.400 -L' l
l k
0.200 0.000 a
4 0.0000 1.0000 2.0000 3.0000 4.0000 5.000t1 6.0000 7.0000 8.0000 9.0000 10.0000 11.0000 12.0000 BOTTOM CORE HEIGHT (FT)
TOP Revision 1 i
t.
' Figure 2 Byron Unit 2 Cycle 6 FQ(Z) x P versus Core Height Burnup Range of > 12K MWDIMTU to EOC (6.0.2.50) l i I I
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i
- 3 (12.0,2. 31) a m"
""E l
ma" a'"
ama e--a, m a 2.4000 s
n-a a
m a
am m;-
l 5
2.2000 m
t 2.0000 a
1.8000 g
a m
3 1.6000 O
a Fry List Analysis Points m
LOCA Limiting Envelope
> 1.4000 i:
- - * - -Bottom Surveillance Linit
- - + - op Summance ht l
1.2000
=
x N^ 1.0000 o
S m
0.8000 0.6000 l
0.4000 l' E
0.2000 0.0000 A
5 0.0000 1.0000 2.0000 3.0000 4.0000 5.0000 6.0000 7.0000 8.0000 9.0000 10.0000 11.0000 12.0000 BOTTOM CORE HEIGHT (FT)
)
Revision 1 i
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REVISION 1 i
GYRON UNIT 2 CYCLE 6 OPERATING LIMITS REPORT
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Table 1 Maximum Fo
- P vs. Axial Core Height During Normal Operation 0 < Cycle Bumup s 12,000 MWD /MTU CORE HEIGHT MAXNUM
- FEET)
Fo
- P BOTTOM 1
0.1252 0.42448 2
0.3756 085152 3
0.6259 1.90810 4
0.8763 2.19180 5
1.1267 2.40480 6
1.3771 2.48700 7
1.6274 2.49890 8
1.8778 2.48990 9
2.1282 2.31040 3
10 2.3786 2.40800 11 2.6290 2.41430 12 2.8793 2.44370 13 3.1297 2.46640 14 3.3801 2.47950 15 3.6305 2.49450 16 3.8808 2.30440 17 4.1312 2.49700 18 4.3816 2.49910 19 4.6320 2.49230 20 4.8823 2.47810 21 5.1327 2.46140 22 5.3831 2.43450 23 5.6335 2.22670 24 5.8839 2.40410 25 6.1342 2.41940 26 6.3846 2.41900 27 6.6350 2.43700 28 6.8854 2.44510 29 7.1357 2.43540 30 7.3861 2.28290 31 7.6365 2.41880 32 7.8869 2.39840 33 8.1372 2.37590 34 8.3876 2.34390 35 8.6380 2.33360 36 8.8884 2.28940 37 9.1388 2.21650 38 9.3891 2.29550 39 9.6395 2.29550 40 9.8899 2.32680 41 10.140 2.35840 42 10.391 2.36080 43 10.641 2.24010 44 10.891 2.17070 45 11.142 1.99350 46 11.392 1.73480 47 11.643 0.80685 TOP 48 11.893 0.43607
REVISION 1 BYRON UNIT 2 CYCLE 6 OPERATING LIMITS REPORT Table 2 Maximum Fo
- P vs. Axial Core Height During Normal Operation Cycle Bumup > 12,000 MWD /MTU CORE HEIGHT MAXIMUM (FEET)
Fo
- P BOTTOM 1
0.1252 0.4253 2
0.3756 0.8531 3
0.6259 1.9117 4
0.8763 2.1960 5
1.1267 2.4069 6
1.3771 2.4892 7
1.6274 2.4987 8
1.8778 2.4896 9
11282 13079 10 2.3786 2.4054 11 2.6290 2.4093 12 2.8793 2.4386 13 3.1297 2.4588 14 3.3801 2.4718 15 3.6305 2.4844 16 3.8808 2.2950 17 4.1312 2.4844 18 4.3816 2.4865 19 4.6320 2.4773 20 4.8823 2.4631 21 5.1327 2.4441 22 5.3831 2.4174 23 5.6335 2.2045 24 5.8839 2.3802 25 6.1342 2.4067 26 6.3846 2.4063 27 6.6350 2.4219 28 6.8854 2.4299 29 7.1357 2.4228 30 7.3861 2.2710 l
31 7.6365 2.4224 32 7.8869 2.4019 33 8.1372 2.3772 34 8.3876 2.3451 35 8.6380 2.3373 36 8.8884 2.2930 37 9.1388 2.2179 38 9.3891 2.2970 39 9.6395 2.2950 40 9.8899 2.3262 41 1C.140 2.3580 42 10.391 2.3604 43 10.641 2.2398 44 10 891 2.1660 45 11.142 2.0071 46 11.392 1.7428 47 11.643 0.7844 TOP 48 11.893 0.4229
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