ML20043F453

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Forwards, Core Surveillance Rept for North Anna 2,Cycle 7 W/Extended License Burnup Limit. Rept Contains Specific Power Distribution Limits Applicable for Cycle 7 Operation W/Burnup Limit Extension
ML20043F453
Person / Time
Site: North Anna Dominion icon.png
Issue date: 06/08/1990
From: Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20043F454 List:
References
89-001B, 89-1B, NUDOCS 9006150027
Download: ML20043F453 (2)


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VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 June 8,1990 1

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United States Nuclear Regulatory Commission Serial No.

89 001B Attention: Document Control Desk NL&P/JYR:vlh Washington, D. C. 20555 Docket No. 50 339 i

License No. NPF 7 I

Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNIT 2 RELOAD INFORMATION FOR CYCLE 7 LICENSE BURNUP LIMIT EXTENSION The North Anna Unit 2 Cycle 7 reload core has been analyzed for an extension of the license burnup limit from 17700 MWD /MTU to 18700 MWD /MTU. Unit 2 is expected to exceed 17700 MWD /MTU burnup on August 9,1990 based on current loading projections. The purpose of this letter is to transmit to you the Core Surveillance Report containing specific power distribution limits applicable for Cycle 7 operation with this burnup limit extension.

The Cycle 7 core was analyzed in accordance with the methodology dwumenteo in the approved topical report VEP-FRD 42, Revision 1-A, " Reload Nuclear Design.

Methodology," using NRC approved codes as referenced in the topical.

The information in the report was developed in accordance with our topical report VEP-NE-1-A, " Relaxed Power Distribution Control Methodology and Associated FO Surveillance Technical Specifications."

These analyses were performed and reviewed by our technical staff. The results of these analyses indicated that no key j

analysis parameters would become more limiting during Cycle 7 operation with the i

burnup limit extension than the values assumed in the applicable safety analyses.

A review has been performed by the Station Nuclear Safety and Operating Committee.

It has been determined that no unreviewed safety question as defined in 10 CFR 50.59 will exist as a result of the burnup limit extension.

The Core Surveillance Report, which consists of the Cycle 7 N(z) function and the Axial Flux Difference Limits, is included as an Attachment. These limits are based upon the current total peaking factor (Fo) limit of 2.19.

9006150027 900608 PDR ADOCK 05000339

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' This letter.'is'provided for your information and planning. However, should you have-

. questions, please contact us at your earliest convenlonce.

.~Very t uly y s,

.-W. L. S art Senior Vice President - Nuclear

. Attachment L

Core Surveillance Report for North Anna 2, Cycle 7 i

cc:

U. S. Nuclear Regulatory Commission Region 11 101 Marietta Street, N. W.

Suite 2900 Atlanta, Georgia 30323 i

Mr. M. S. Lesser NRC Senior Resident inspector North Anna Power Station

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