ML19332B336
| ML19332B336 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 09/12/1980 |
| From: | Novak T Office of Nuclear Reactor Regulation |
| To: | Ferguson J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| NUDOCS 8009260529 | |
| Download: ML19332B336 (2) | |
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A UNITED STATES "1
NUCLEAR REGULATORY COMMISSION Q
W ASHINGTO N, D. C. 20555 b
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September 12, 1980 Docket Nos. 50-338 50-339 Mr. J. H. Ferguson Executive Vice President - Power Virginia Electric and Power Company Post Office Box 26666 Richmond, Virginia 23261
Dear Mr. Ferguson:
On February 11, 1980 the Atomic Safety and Licensing Board issued a Decision (ALAB-578) concerning the pumphouse settlement issue for the North Anna Power Station, Units 1 and 2.
In ALAB-578, the Board suggested that the NRC staff consider direct monitoring for the movement of the service water pipe exposion joints in lieu of the presently used indirect method based on surveying measurements.
We have concluded that the flexible joints that have been installed at North Anna can acconmodate significant pumphouse settlement before any over-stress condition could occur in either the pipes leading to the spray system or in the flexible joints themselves.
Further, we have concluded that the presently used survey measurement method provides sufficient early warning of any significant additional settlement.
However, in light of the Board's suggestion, we request that you submit an analysis of the precision obtainable from a direct measurement system for the service water pipe expansion joints as compared with the existing indirect system, and the cost estimate for implementing a direct measurement system.
Based on your submittal, we will perform an independent evaluation of the specific system to determine if installation of such a system is justified.
We request that your submittal be provided for our review not later than December 31, 1980.
Sincerely, R
n&
T mas M. Novak, Assistant Director for Operating Reactors Division of Licensing cc:
See next page 8 009260 WRq i
Mr. J. H. Ferguson Virginia Electric and Power Company cc:
Richard M. Foster, Esq.
Mrs. June Allen Musick, Williamson, Schwartz, North Anna Environmental Coalition Leavenworth & Cope, P.C.
1105-C Olive Street P. O. Box 4579 Greensboro, North Carolina 27401 o
Boulder, Colorado 80306
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Michael W. Maupin, Esquire Mr. James Torson Hunton, Williams, Gay and Gibson 501 Leroy P. O. Box 1535 Socorro, New Mexico 87801 Richmond, Virginia 23212 Mrs. Margaret Dietrich Route 2, Box 568 Alderman Library Gordonsville, Virginia 22042 Manuscripts Department University of Virginia Charlottesville, Virginia 22901 Mr. James C. Dunstance State Corporation Comission Mr. Edward Kube Comonwealth of Virginia Board of Supervisors Blandon Building Louisa County Courthouse Richmond, Virginia 23209 P. O. Box 27 Louisa, Virginia 23093 U. S. Environmental Protection Agenc3 Region III Office Ellyn R. Weiss, Esquire ATTN:
EIS COORDINATOR Sheldon, Harmon, Roisman and Weiss Curtis Building 1725 I Street, N.W., Suite 506 6th and Walnut Streets Washington, D. C.
20006 Philadelphia, Pennsylvania 19106 Mr. W. R. Cartwright, Station Manager Director, Technical Assessment Divis P. O. Box 402 Office of Radiation Programs (AW-459 Mineral, Virginia 23117 U. S. Environmental Protection Agenc; Crystal Mall #2 Mr. Anthony Gambardella Arlington, Virginia 20460 Office of the Attorney General 11 South 12th Street - Room 30S Mr. Paul W. Purdom Environmental Studies Institute Richmond, Virginia 23219 Drexel University 32nd and Chestnut Streets Mr. Allan Tattersall Philadelphia, Pennsylvania 19104 Resident Inspector / North Anna c/o U.S. NRC Atomic Safety and Licensing P. O. Box 128 Appeal Board Panel
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Spotsylvania, Virginia 22553 U. S. Nuclear RegJlatory Comission Washington, D. C.
20555 Comonwealth of Virginia Council on the Environment 903 Ninth Street Office Building Richmond, Virginia 23129