ML20085G575

Interim Deficiency Rept Re Potential Design Deficiency in Valve Yoke to Motor Mount Weld.Initially Reported on 740514. Investigation & Tests Continuing.Final Rept Expected by 750303

ML20085G575
Person / Time
Site:	Browns Ferry
Issue date:	01/15/1975
From:	Gilleland J TENNESSEE VALLEY AUTHORITY
To:	Knuth D US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20085G493	List: ML20085G489 ML20085G504 ML20085G551 ML20085G575
References
NUDOCS 8308290148
Download: ML20085G575 (1)

Text

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O O -e TENNESSEE VALLEY AUTHORITY CH ATTANOOG A. TENNESSEE 374o1 January 15, 1975 Mr. Donald F. Knuth, Director Directorate of Regulatory Operations U.S. Atomic Energy Commission Washington, DC 20545

Dear Mr. Knuth:

BROWNS FERRY NUCLEAR PLANT. UNITS 2 AND 3 - POTENTIAL DESIGN DEFICIENCY IN VALVE YOKE TO MOTOR MOUNT WELD Initial report of the subject potential deficiency was made on Iby 14, 1974, and was followed by our June 14, July 15, August 12, and September 13, letters, J. E. Gilleland to Donald F. Knuth. Because the yoke to motor base welds of FCV-74-58 in unit 1 failed, similar valves (FCV's 74-58 and 74-72) in units 2 and 3 may be subject to the same type of failure.

The investigation of the problem is contitiuing; tests were conducted in December 1974. After the test results have been analyzed, we will forward to you the final report on this potential deficiency. We expect that we should be able to provide the report by Ibrch 3,1975.

Very truly yours, p . . . -

Nb *

]J. E. Gilleland '

Assistant to the Ihnager of Power CC: Mr. Norman C. Moseley, Directcr Directorate of Regulatory Operations U.S. Atomic Energy Commission Region II - Suite 818 230 Peachtree Street NW.

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