ML18153A526

Rev 0 of COLR Surry 1,Cycle 15 Pattern Lt.

ML18153A526
Person / Time
Site:	Surry
Issue date:	03/31/1997
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18153A525	List: ML18153A524 ML18153A526
References
NUDOCS 9704300004
Download: ML18153A526 (6)

Text

• CORE OPERATING LIMITS REPORT Surry 1 Cycle 15 Pattern LT Rev O March 1997 9704300004 970424 PDR ADOCK 05000280 P PDR S1Cl5/LT COLR Rev 0 Page 1 of 6

1.0 INTRODUCTION

The Core Operating Limits Report (COLR) for Surry 1 Cycle 15 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.l.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 S1Cl5/LT COLR Rev 0 Page 2 of 6

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 TS 6.2.C.

2.1 Moderator T!3mPerature 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-FO(Z) (TS 3.12.B.1)

CFQ FQ(Z) ~ -----

• K(Z) FOR P > 0.5 p

CFQ FQ(Z) ~ -----

• K(Z) for P ~ 0.5 0.5 S1Cl5/LT COLR Rev 0 Page 3 of 6

• THERMAL POWER where: P = --------------

RATED POWER 2.3.1 CFQ = 2.32 2.3.2 K(Z) is provided in Figure 2.

2o4 Nuclear Enthalpy Rise Hot Channel Factor. F~CN) (TS 3.12.B.1)

FLllI(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 S1Cl5/LT COLR Rev 0 Page 4 of 6

-- ---~-

e

• FIGURE 1 CONTROL BANK INSERTION LIMITS FULLY WITHDRAWN= 227 Steps 230

.475, 2l 7) 220 /

/

210 /

200

/

190

/ C BanK 180

.v 11.0. 18:3~

170 V

/ /

/ /v 160 z

0 150 / /

.= (0, 151'

/

en 0

-C 140 /

a.

a.

I 130 /

~ ~ 120

/

~ ~ 110

/ D Bark

.,/

5 g- 100 ffi §_ 90 /

/v 8a: 80 70 V 60

/

/

/

50 40 /

30 /

/(a, 23) 20 10 0

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 FRACTION OF RATED THERMAL POWER S1Cl5/LT COLR Rev 0 Page 5 of 6

FIGURE 2 K(Z) - NORMALIZED FQ AS A FUNCTION OF CORE HEIGHT 1,2 1.1

6. 1.0 1

0.9

-(12. 0.925' r---

0.8 s;

0 u.

C 0.7 w

N

i

< 0.6

e a:

0 ZI 05 N

~

0.4 0.3 0.2 0.1 0

0 2 3 4 5 6 7 8 9 10 11 12 CORE HEIGHT (FT)

S1Cl5/LT COLR Rev 0 Page 6 of 6