ML20195E240

Rev 2 to COLR for SPS Unit 2 Cycle 16 Pattern Ag

ML20195E240
Person / Time
Site:	Surry
Issue date:	05/31/1999
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18152B429	List: ML20195E240
References
NUDOCS 9906110015
Download: ML20195E240 (5)

Text

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. CORE OPERATING LIMITS REPORT (COLR)

SURRY POWER STATION UNIT 2 CYCLE 16 PATTERN AG

' 'l REVISION 2 l

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MAY 1999 1

9 1

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Virginia Electric and Power Company p

9906110015 990603 PDR ADOCK 05000281 4 Page 1 F

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1.0 INTRODUCTION

l This Core Operatin'g Limits Report (COLR) for Surry Unit 2 Cycle 16 has been prepared in accordance with the requirements of Technical Specification 6.2.C.

L The technical specifications affected by this repon are:

TS 3.1.E and TS 5.3.A.6.b - Moderator Temperature Coefficient l

' TS 3.12.A.2 and TS 3.12.A.3 - Control Bank Insertion Limits l

TS 3.12.B.1 and TS 3.12.B.2 - Power Distribution Limits l

l 2.0 OPERATING LIMITS l

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 l

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 l

+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.

i 1

1 4

S2C16/NGCOLR Page 2 of 5

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2.3 Heat Flux Hot Channel Factor-FO(z)(TS 3.12.B.1) 4 CFQ FQ(z) 5 ----

• K(z) for P > 0.5

.P-CFQ l

FQ(z) 5 ----

• K(z) for P s 0.5 0.5 i

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THERMAL POWER where: P =

RATED POWER

-2.3.1 CFQ = 2.32.-

' 2.3.2. K(z)is provided in Figure 2.

l s.

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,2.4 Nuclear Enthalov Rise Hot Channel Factor-FAH(N) (TS 3.12.B.1)

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FAH(N) = CFDH * (1 + PFDH * (1 - P)}

l THERMAL POWER where: P =

i RATED POWER

-2.4.1

.CFDH = 1.56 for Surry Improved fuel (SIF) 2.4.2 PFDH = 0.3 I

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S2C16/AG COLR-Page 3 of 5

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3 Figure 1 S2C16 ROD GROUP INSERTION LIMITS Fully w/d position = 226 steps 230

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(0.4688, 226) 210 200 C-BANK 190 (1.0, 183) 180

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170 f

f 160

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150

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_j (0,151) l

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130 g

I120 f

D-BA NK

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k100

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8

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y 90 7

80

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'70 60 f

50 40

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30 f 20 (0,23) 10 0

' O.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Fraction of Rated Thermal Power S2C16/AG COLR

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Page 4 of 5

Figure 2

' K(Z)- Normalized FQ as a Function of Core Height 1.2 1.1

.;6,1.0) 1.0 N

0.9 (12,.925) 0.8 R

h0.7 O

0.6 8z g0.5 x

0.4 0.3

. 0.2 0.1 0.0 0

1 2

3 4

5

'6 7

8 9

10 11 12 13 CORE HEIGHT (FT)

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S2C16/AG COLR Page 5 of 5 L:.