ML18153D383

From kanterella
Jump to navigation Jump to search
Cycle 12 Core Operating Limits Rept.
ML18153D383
Person / Time
Site: Surry Dominion icon.png
Issue date: 05/25/1993
From:
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18152A452 List:
References
NUDOCS 9307150089
Download: ML18153D383 (7)


Text

e SURRY 1 CYCLE 12 CORE OPERATING LIMITS REPORT May 25th, 1993 Prepared By:f,t'/.~.ul s(z~/'fj Reviewed By: ~p), O. tJ £/7..,5/q_J

-- 9307150089- -930525 PDR ADOCK 05000280 l /1 p PDR I 'I L

e e CORE OPERATING LIMITS REPORT (COLR) FOR SURRY 1 CYCLE 12 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Surry Unit 1 Cycle 12 has been prepared in accordance with the requirements of Technical Specification (TS) 6.2.C.

The Technical Specifications affected by this report are listed below:

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 Page 2 of 7.

-* e CORE OPERATING LIMITS REPORT (COLR) FOR SURRY 1 CYCLE 12 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. I. I The Moderator Temperature Coefficient (MTC) limits are:

The MTC. shall be less positive than or equal to

+3.0 pcm/°F below 50 percent of RATED POWER The MTC shall be less positive than or equal to 0.0 pcm/°F at or above 50 percent of RATED POWER Page 3 of 7

  • ' e e CORE OPERATING LIMITS REPORT (COLR) FOR SURRY 1 CYCLE 12 2.2 Control Bank Insertion Limits (TS 3.12.A.2) 2.3.1 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) 5

  • K(Z) for P > 0.5 p

CFQ FQ(Z) 5 ---

  • K(Z) for P 5 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.

Page 4 of 7

e CORE OPERATING LIMITS REPORT {COLR) FOR SURRY 1 CYCLE 12 2.4 Nuclear Enthalpy Rise Hot Channel Factor - FAH..(Nl (TS 3.12.B.1)

FAH(N) 5 CFDH * (1 + PFDH * (1 - P))

THERMAL POWER where: P -*-------------

RATED POWER 2.4.1 CFDH = 1.56 2.4.2 PFDH = 0.3 Page 5 of 7

e e CORE OPERATING LIMITS REPORT (COLR) FOR SURRY 1 CYCLE 12 FIGURE 1 CONTROL ROD BANK INSERTION LIMITS VS. PERCENT RATED THERMAL POWER FULLY Wl1HDRAWN = 225 230 I (D~,225) 220:

210 ,

200 *

,183) 190 '

180 :

170 :

z 0 160 :

E U) 150 0 140 ,

a.

a. 130 w 120 ,

ti 110 '

a.

~ 100, 0

a: 90+

CJ 80+

Q 0 70' a:

60-t--

50+

20 +-m:o.m I  :

10+~,- - ~ ~ - - - - . . : , ._ ____;,.._ _ _ _----r~---:-~---r~

0 --'-:_ ____:,----"-----,__...:--'--~----.:,..._-:----:---

u ~ ~ u u ~ u ~ u u u FULLY INSERTED FRACTION OF RATED THERMAL POWER Page 6 of 7

e e

. CORE OPERATING LIMITS REPORT (COLR) FOR SURRY 1 CYCLE 12 FIGURE 2 K(Z) - NORMALIZED FQ AS A FUNCTION OF CORE HEIGHT 1.2-,--------------------

1.0 -r----------~:-----------

(6,1.0)

N' (12, 0.925) 0 o.s u.

Q w

N

i

< 0.6+------------------

E a:

0 z

I

@ 0.4 + - - * - - - - - - - - - - - - - - - - - - -

~-

0.2 *

  • t - - - - - - - - - - - - - - - - - - - - - - - - -

0 1 2 3 4 5 6 7 8 9 10 11 12 CORE HEIGHT IN FT Page 7 of 7