ML20084U096

LER BFRO-50-296/7611:on 761001,RCIC Failed to Control Speed. Caused by Broken Wire to Magnetic Speed Sensor in Governor Control Circuit Due to Stress.Wire Repaired

ML20084U096
Person / Time
Site:	Browns Ferry
Issue date:	10/18/1976
From:	Fox H TENNESSEE VALLEY AUTHORITY
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
LER-BFRO-50-296-761, NUDOCS 8306270050
Download: ML20084U096 (2)

Text

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. o. LICENSEE EVENT. REPORT CONTAOL BLOCK:[ l l l l l LEAZE CRiiJT ALL CEIUIRED INFORM'. TION) 1 6 LCENSE EVENT LCENSEE TYPE TYPE NAVE LCEf43E NUYSEA O1 AlLlBlRlFl3_l l 0l 0l-l O!0 l0 I O I O l-l 0 ! 025l l4l1l1l1l1l 26 30 l n! tl 31 32 7 89 14 15 EVENT DATE REPOAT DATE Typ a DOCKET NUV8EA CATECORY 101 sI DI-1012I o161 11 10 i n i ,121 s l i I I I I i 1 E]Cos t i57 I 56 I Lt]

53 L2J 60 61 66 69 74 75 60 7 0 EVENT DESCn PTiON

{ During a surveillance test, RCIC failed to control speed because of a broken wire to thel **

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PERSONNEL !N JtJR:ES NUVBER ' O E SC A.PTION b l01010l11 12l 7 89 NA 60 OFFSITE CONSEQUENCES NA l M l 80 7 09 LOSS DA DAMAGE TO FACILITY n rE oESCn pr.c N ,

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s q-October 18, 1976

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x Hr.'Nornr.n C. Moseley, Director '

U.S. Nuclear Roguintory Commission Office of Inspection and Enforcement

• Region II 230 Peachtree Street, NW., 8th Floor Atlanta, Georgia 30303 TENNESSEE VALLEY AUT110RITY - BROWNS FERRY NUCLEAR PLANT UNIT 3 -

DOClu!T NO. 50-296 - FACIL1 t' RATING LICENSE DPR REPORTABLE '

OCCURRENCE REPORT BFRO-50 296/761 The enclosed report is to provide details concerninS the RCIC thut failed during a surveillance test to control speed because of a broken wire to the magnetic opeed censor in the governor control circuit. This report in.oub.aitted in accordance with Browns Ferry Technical Specifications Section 6. This event occurred on Browns Ferry Nuclear Plant unit 3.

Very truly yours, .

TENNESSEE VALLEY AUT!!ORITY ..

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11. S. Fox Director of Power Production Enclosure (3) .

CC (Enclosure):

Director (3)

Of fice of !!anageracnt Information and Progra:a Control

. U.S. Nuclear Regulatory Commionion 4

Washington,D.b. 20555 j "

nirector__{40).I Offics of Innpoetion and Enforcement

' U.S. Nuclear itegulatory Corraission Vanhington, D.C. 20555 l\ h%he$ $I II%l $III - ll$ hI $ I y' h$ g