ML20113B510
| ML20113B510 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 04/30/1996 |
| From: | VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | |
| Shared Package | |
| ML18153A474 | List: |
| References | |
| NUDOCS 9606270183 | |
| Download: ML20113B510 (6) | |
Text
CORE OPERATING LIMITS REPORT SURRY 2 Cycle 14 Revision 0 l
l April 1996 l
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l 9606270183 960624 page 1 of 6 PDR ADOCK 05000281 p
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1.0 INTRODUCTION
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This Core Operating Limits Report (COLR) for Surry Unit 2 Cycle 14 has been prepared in accordance with the requirements of Technical Specification 6.2.C.
The Technical Specifications affected by this report are:
TS 3.1.E and TS 5.3.A.6.b - Moderator Temperature Coefficient TS 3.12.A.2 and TS 3.12.A.3 - Control Bank Insertion Limits TS 3.12.B.1 and TS 3.12.B.2 - Power Distribution Limits i
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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 Technical Specification 6.2.C.
2.1 Moderator Temperature Coefficient (TS 3.1.E and TS 5.3.A.6.b) 2.1.1 The Moderator Temperature Coefficient (MTC) limits are:
+6.0 pcm/ F at less than 50 percent of RATED POWER, or
+6.0 pcm/ F at 50% of Rated Power and linearly decreasing to O pcm/ F at Rated Power 2.2 Control Bank Insertion Limits (TS 3.12.A.2) 2.2.1 The control rod banks shall be limited in physical insertion as shown in Figure 1.
2.3 Heat Flux Hot Channel Factor-FO(Z) (TS 3.12.B.1)
CFQ FQ (Z) s ---
- K(Z) FOR P > 0.5 P
CFQ FQ (Z) s ----
- K(Z) for P s 0.5 0.5 THERMAL POWER where:
P=
RATED POWER 2.3.1 CFQ = 2.32 2.3.2 K (Z) is provided in Figure 2.
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2.4 Nuclear Enthalov Rise Hot Channel Factor - FAH (N) (TS 3.12.B.1)
FAH(N) s CFDH * (1 + PFDH * (1 - P))
THERMAL POWER where:
P= -------------
RATED POWER 2.4.1.a CFDH = 1.56 for Surry Improved fuel (SIF) 2.4.1.b CFDH = 1.346 for LOPAR fuel 2.4.2 PFDH = 0.3 Page 4 of 6
a FIGURE 1 CONTROL BANK INSERTION LIMITS FULLY WITHDRAWN = 227 Steps 230
- .475, 22 7) 220
/
210
/
200
/ C Bank 190 p
,,,o,,33) 180
/
/
170 e
f 160 /
/
zO 150
/
p (c.151)
E 140 7
k 130
- o. e
/
gg120 Q. y 110 to
/
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$$100~
bO 90 f
O
/
o 80 70 60
/
50 40 30 20 10 0
1 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 08 0.9 1
FRACTION OF RATED THERMAL POWER i
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4 FIGURE 2 K(Z) - NORMALIZED FO AS A FUNCTION OF CORE HEIGHT 1.2 1.1
- 6,1.0 1
g0.925) 0.9 1
I 0.8
$o
' O.7 O
N k0.6 2
tto y0.5 E
u 0.4 0.3 0.2 0.1 0
0 1
2 3
4 5
6 7
8 9
10 11 12 CORE HEIGHT (FT) l l
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