ML20085M554

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Forwards Second Interim Rept of Vibrations Detected in Torus & torus-ring Header on 731128.Rept Describes Plans for Relief Valve Tailpipe Mod,Interim Inservice Insp & Planned Confirmatory Testing.W/O Encl
ML20085M554
Person / Time
Site: Browns Ferry Tennessee Valley Authority icon.png
Issue date: 05/07/1974
From: Eric Thomas
TENNESSEE VALLEY AUTHORITY
To: Oleary J
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20085M537 List:
References
NUDOCS 8311080629
Download: ML20085M554 (1)


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ANN"iDCCt5ih AY May 7, 1974 ,,

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Mr. John F. O' Leary, Director j_ ,,

Directorate of Licensing Office of Regulation

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Dear Mr. O' Leary:

b f TENNESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLANT UNIT 1 -

DOCKET NO. 50-259 - FACILITY OPERATING LICENSE DPR SECOND INTERIM REPORT ON VIBRATIONS IN TORUS AND TORUS-RING HEADER Please refer to my letters dated November 28, 1973, enclosing abnormal occurrence report BFAO-7343W, and December 17, 1973, enclosing an interim report on the vibrations in the torus and torus-ring header. Enclosed is a second interim report which documents the chronology of the problem; summarizes the. testing and test results to date; and describes our plans for relief valve tailpipe modification, interim inservice inspection, and planned contirmatory testing. A final report will be submitted upon completion of the unit i relief valve tailpipe modifications and subsequent confirmatory testing.

Very truly yours, TENNESSEE VALLEY AUTHORITY E. F. Thomas

. Director of Power Production Enclosure -

CC (Enclosure):

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Mr. Norman C. Moseley, Director Region II Regulatory Operations Office, USAEC 230 Peachtree Street, NW.

Atlanta, Georgia 30303 1

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