ML18152B708
| ML18152B708 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 11/30/1998 |
| From: | CENTERIOR ENERGY |
| To: | |
| Shared Package | |
| ML18152B707 | List: |
| References | |
| NUDOCS 9812070247 | |
| Download: ML18152B708 (6) | |
Text
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9812070247 981130'.
PDR. ADOCK 05000280<
P PDR S1Cl6/UN COLR CORE OPERATING LIMITS REPORT Surry 1 Cycle 16 Pattern UN RevO October 1998 Page 1 of 6
1.0 INTRODUCTION
The Core Operating Limits Report (COLR) for Surry 1 Cycle 16 has been prepared in accordance with the requirements of Technical Specification 6.2.C.
The technical specifications (TS) affected by this report are:
TS 3.1.E.l & TS 5.3.A.6.b - Moderator Temperature Coefficient TS 3.12.A.2 & TS 3.12.A.3 - Control Bank Insertion Limits TS 3.12.B.1 & TS 3.12.B.2 - Power Distribution Limits S1C16/UN COLR Page 2 of 6
2.0 OPEIµ.TING 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 6.2.C.
2.1 Moderator Temperature Coefficient (TS 3.1.E.l & 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-FQ(z) (TS 3.12.B.1)
S1C16/UN COLR CFQ FQ(z) ~ -------
- K(z) for P > 0.5 p
CFQ FQ(z) ~ -------
- K(z) for P ~ 0.5 0.5 Page 3 of 6
where: P =
2.3.1 CFQ = 2.32 THERMAL POWER RATED POWER 2.3.2 K(z) is provided in Figure 2.
2.4 Nuclear Enthalpy Rise Hot Channel Factor, F~H(N) (TS 3.12.B.1)
F~H(N) ~ CFDH * {1 + PFDH*(l - P)}
THERMAL POWER where: P =
RATED POWER 2.4.1 CFDH = 1.56 for Surry Improved fuel (SIF) 2.4.2 PFDH = 0.3 S1C16/UN COLR Page 4 of 6
230 220 210 200 190 180 170 160 150
"'C j 140 U)
C.
Q) iii 130
- i:i:
i:: 120 0 E
~ 110 a..
C.
- I 100 0...
(!)
90
"'C 0
0:::
80 70 60 50 40 30 20 10 0
Figure 1 51C16 ROD GROUP INSERTION LIMITS Fully w/d position = 229 steps
/
0.4875, e29)
V
/
/
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C-BA ~K
/v
/
vv
/
/
(0, 151)
/
/
/
/
/
D-BANK
//
/
//
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/
/
/
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(0, 23) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Fraction of Rated Thermal Power (1.0 183)
/
/
//
0.9 1.0 S1C16/UN COLR Page 5 of 6
1.2 1.1 1.0 0.9 0.8 g
fl 0.7 C w N
- i
<C 0.6
~
a::
0 z
.!.. 0.5
~
- s:::
0.4 0.3 0.2 0.1 0.0 0
1 S1C16/UN COLR Figure 2 K(Z) - Normalized FQ as a Function of Core Height (5, 1.0) - r---r---r---r---r---.~
t*1z,. ~,OJ 2
3 4
5 6
7 8
9 10 11 12 13 CORE HEIGHT {FT)
Page 6 of 6