ML18153C380

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Forwards Topical Rept VEP-NAF-1, Pdq Two Zone Model. Rept Describes Coarse Mesh 3-D Core Analysis Model.Requests Approval of Rept by End of First Quarter 1991
ML18153C380
Person / Time
Site: Surry, North Anna  Dominion icon.png
Issue date: 10/01/1990
From: Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18153C381 List:
References
90-562, NUDOCS 9010090075
Download: ML18153C380 (2)


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r *. 11 VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 October 1, 1990 United States Nuclear Regulatory Commission Serial No.90-562 Attention: Document Control Desk NO/RFB Washington, D. C. 20555 Docket Nos. 50-280 50-281 50-338 50-339 License Nos. DPR-32 DPR-37 NPF-4 NPF-7 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 NORTH ANNA POWER STATION UNITS 1 AND 2 TOPICAL REPORT - PDQ TWO ZONE MODEL Enclosed for your review and approval is the Virginia Power Topical Report VEP-NAF-1, "PDQ Two Zone Model," July, 1990.

The attached report describes a coarse mesh 3-D core analysis model to be used for in-house nuclear reload design of Surry Unit 1 Cycle 12 which is scheduled to begin in mid 1992. Three dimensional core analysis of Surry Unit 1 Cycle 12 is required because of axially zoned flux suppression inserts which will be loaded. We request your approval by the end of the first quarter of 1991 to support core design analysis of this cycle.

The report has been reviewed by the Station Nuclear and Operating Committee at each station. If you have any questions on the material in this topical report, please contact us.

Very truly yours, dl~

W. L. Stewart Senior Vice President - Nuclear Enclosure

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_ _ _ _ ________-c-cc: U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N. W.

Suite 2900 Atlanta, Georgia 30323 Mr. W. E. Holland NRC Senior Resident Inspector Surry Power Station Mr. M. S. Lesser NRC Senior Resident Inspector North Anna Power Station

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