Text

Forwards Rev 0 to COLR Surry 2 Cycle 13 Pattern Ug
	ML18153A832
Person / Time
Site:	Surry
Issue date:	06/01/1995
From:	Bowling M; VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18153A833	List: ML18153A832; ML20084Q903;
References
	95-273, NUDOCS 9506090116
	Download: ML18153A832 (8)
	v • d • e

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR~9506090116 DOC.DATE: 95/06/01 NOTARIZED: NO DOCKET#

FACIL:50-281 Surry Power Station, Unit 2, Virginia Electric & Powe 05000281 AUTH.NAME AUTHOR AFFILIATION BOWLING,M.L.

Virginia Power (Virginia Electric & Power Co.)

p RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECr_r:: Forwards Rev o to "COLR Surry 2 Cycle 13 Pattern UG."

DISTRIBUTION CODE: A001D COPIES RECEIVED:LTR _l ENCL 1.L SIZ~-~---./,r(o TITLE: OR Submittal: General Distribution NOTES:

05000281 RECIPIENT COPIES RECIPIENT ID CODE/NAME LTTR ENCL ID CODE/NAME PD2-1 LA 1

1 PD2-1 PD BUCKLEY,B 1

1 INTERNAL: ACRS 6

6C F~~bo1 NRR/DE/EMCB 1

1 N

C HICB NRR/DSSA/SPLB 1

1 NRR/DSSA/SRXB NUDOCS-ABSTRACT 1

1 OGC/HDS2 EXTERNAL: NOAC 1

1 NRC PDR NOTES:

1 1

NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCL'.rvttNT CO!'\\"TROL DESK, ROOM Pl-37 (EXT 504-2083) TO ELil\\*H'.\\IATE YOUR :\\fA'.\\1E FROM DISTRIBUTION LISTS FOR DOCLME'.\\JTS YOU DO~'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 19 ENCL 18 COPIES LTTR ENCL 1

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VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 June 1, 1995 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Gentlemen:

VIRGINIJ!l ELECTRIC AND POWER COMPANY SURRY !POWER STATION UNIT 2 CYCLE 113 CORE OPERATING LIMITS REPORT Serial No.95-273 NA&F/RTR-CGL RO Docket Nos.

50-281 License Nos.

DPR-37 As required by Technical Specification 6.2.C, attached is a copy of the Core Operating Limits Report (COLR) for Surry Unit 2 Cycle 13 Pattern UG. The COLR contains limits for the Moderator Temperature Coefficient, Control Bank Insertion, and Power Distribution Limits (i.e., Heat Flux Hot Channel Factor and Nuclear Enthalpy Rise Hot Channel Factor).

If you have questions or require additional information, please contact us.

Very truly yours,

$11~

M. L. Bowling, Manager Nuclear Licensing & Programs cc:

U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N. W.

Suite 2900 Atlanta, Georgia 30323 Mr. M. W. Branch NRC Senior Resident Inspector Surry Power Station 95060901*f6 950601 ___ - ~-~]

.. PDR - ADOCK - 05000281.*

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CORE OPERATING LIMITS REPORT SURRY 2 CYCLE 13 PATTERN UG Revision O February, 1995 S2C13/UG COLR, Rev. 0 (Feb. 95) 9506090119 950601 PPDR

.ADOCK Op000281 PDR Page 1 of 6

1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Surry Unit 2 Cycle 13 has been prepared in accordance with the requirements of Technical Specification (TS) 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 S2Cl3/UG COLR, Rev. 0 (Feb. 95)

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 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:

+3.0 pcm/°F at less than 50 percent of RATED POWER, or

+3.0 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)

FQ(Z) s FQ(Z) s CFQ p

CFQ 0.5

K(Z) FOR P > 0.5

K(Z) for P s 0.5 THERMAL POWER where:

P = --------------

RATED POWER 2.3.1 CFQ = 2.32

2.3.2 K(Z) is provided in Figure 2.

S2C13/UG COLR, Rev. 0 (Feb. 95)

Page 3 of 6

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2.4 Nuclear Enthalpy Rise Hot Channel Factor -

FaH(N)

(TS 3.12.B.1)

FaH{N) s CFDH * (1 + PFDH * (1 - P))

2.4.1 2.4.2 THERMAL POWER where:

P = -------------

RATED POWER CFDH = 1.56 PFDH = 0.3 S2Cl3/UG COLR, Rev. 0 (Feb. 95)

Page 4 of 6

FIGURE 1 CONTROL BANK INSERTION LIMITS FULLY WITHDRAWN = 227 Steps

/

.475, 2, 7)

/

C Bank

,;v 11.0, 18::)

/

/v

/"

z 230 220 2*io 200 190 18.o*

170 160 0

150 j::

V V

ci5 -

140 0

C

c. I 130 C...

~ i 120

. ~ ~ 110 5 g. 100 ffi §_ 90

§ 80 a:

70 60 50 40 30 20 10 0.

(0, 151

/

/ca. 23) 0 0.1

/

D Bark

,;v

/

/'

/

/ /

0.2 0.3 0.4 0.5 0.6

0. 7 0.8 FRACTION OF RATED THERMAL POWER S2C13/UG COLR, Rev. 0 (Feb. 95) 0.9 Page 5 of 6

I-**.

I

\\it 1.2 1.1 0.9 0.8 N' -

0 u.

0 0.7 UJ N

'.j < 0.6

l: a:

O

. ~ 0.5 8:

~

0.4 0.3 0.2 0.1 D

D FIGURE 2 K(Z) - NORMALIZED FQ AS A FUNCTION OF CORE HEIGHT

6. 1.0 (12. 0.925; --

~-

2 3

4 5

6 7

8 9

10 11 12 CORE HEIGHT (Ff)

S2C13/UG COLR, Rev. 0 (Feb. 95)

Page 6 of 6

ML18153A832

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