ML19276E458

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Forwards Safety Evaluation Rept Re Water Hammer Potential. Tech Evaluation by Consultant Encl
ML19276E458
Person / Time
Site: Beaver Valley
Issue date: 02/12/1979
From: Schwencer A
Office of Nuclear Reactor Regulation
To: Dunn C
DUQUESNE LIGHT CO.
Shared Package
ML19276E459 List:
References
TAC-7313, NUDOCS 7903140189
Download: ML19276E458 (2)


Text

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UNITED STATES

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'l NUCLEAR REGULATORY CCMMISSION

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WASHINGTON, D. C. 20555 February 12, 1979

,,,g Docket No. 50-334 Mr. C. N. Dunn,. Vice President Operations Division Duquesne Light Company 435 Sixth Avenue Pittsburgh, ~e nnsylvania 15219

Dear Mr. Dunn:

We have completed our review of the potential for steam generator water hammer at the Beaver Valley Power Station (SVPS) Unit No.1.

Our review was based on the information Duquesne Light Company provided in letters dated July 9,1975 and January 25, 1978. We have detemined that the design of the feedwater lines and the feed-water ring and the licensing condition, C.7 Steam Generator Water Rise Rate, are adequate to reduce the potential for water hammer. A copy of our evaluation and the evaluation prepared by our consultant, EG&G Idaho, Inc., is enclosed for your infomation.

Sincerely,

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A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors

Enclosure:

Safety Evaluation cc: w/ enclosure See next page 7903140181 P

2

Duquesne Light Company 2

February 12, 1979 cc: Gerald Charnoff, Esquire Mr. James A. Werling Jay E. Silberg, Esquire Plant Superintendent Shaw, Pittman, Potts & Trowbridge Beaver Valley Power Station 1800 M Street, N.W.

P. O. Box 4 Washington, D. C.

20036 Shippingport, Pennsylvania 15077 Karin Carter, Esquire Special Assistant Attorney General Bureau of Administrative Enforcement 5th Floor, Executive House Harrisburg, Pennsylvania 17120 Mr. J. M. Cumiskey Stone & Webster Engineering Corporation P. O. Box 2325 Boston, Massachusetts 02107 Mr. J. D. Woodward R&D Center Westinghous.e Electric Corporation Building 7-303 Pittsburgh, Pennsylvania 15230

8. F. Jones Memorial Library 663 Franklin Avenue Aliquippa, Pennsylvania 15001 Mr. Jack Carey Technical Assistant Duquesne Light Company P. O. Box 4 Shippingport, Pernsylvania 15077 Mr. R. E. Martin Duquesne Light Company 435 Sixth Avenue Pittsburgh, Pennsylvania 15219 Marvin Fein Utility Counsel City of Pittsburgh 313 City-County Building Pittsburgh, Pennsylvania 15219