ML20084U119

LER BFRO-50-296/769:on 760923,RHR Pump 3C Failed to Start on Normal Power.Caused by Open Cable in RHR Logic.Cable Replaced

ML20084U119
Person / Time
Site:	Browns Ferry
Issue date:	10/07/1976
From:	Fox H TENNESSEE VALLEY AUTHORITY
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
LER-BFRO-50-296-769, NUDOCS 8306270056
Download: ML20084U119 (2)

Text

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ENSEE EVENT REPORT

• CONTnOt8tOCi:l l-l l l l l c,t ase Paiur att atOuivo impoamario=3 1 6 Auf OcENst NuvsER vE Tv a l A{ LlB l. Rl Fl3 l l0 l0 l-l 0l 0l 0l 0l 0l-l0 l0 l l4 l1 l1 l1 l1 l l0l3l 7 89 14 15 25 26 30 31 32 Cartoont tN $$ coCxET NuusEn EVENT Dart MPORT DATE O

7 8 CON'i l 57 l l 50 59

[LJ 60 l061l5 l0 l-l 0 l 2 l 9 l 668 l l(.30l 9l 2l 3l 7l 6l l l l l l l l 74 75 80 EVENT DESCAiPTION

@ l During the performance of a surveillance test, the RHR pump 3C failed to start on l 7 8u 80 39 l nonnal power. The other three RHR pumps were operable. RHR pumo 3C would have 1 7 89 -

80 l operated on emerstency nower.

0 (BFRO- 50-296 /769) . I 7 89 60 8I

e9 80 I

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7 89 peu, 80 NDE CODE COMPONENT CCDE VIOLATCN 8 I Cl Fl lF_j lX lX lX l Xl Xl Xl [3] l El 9l 9l 9l [,N.]

7 89 10

12 17 43 44 47 48 CAUSE DESCAIPTION DE l A cable in the RHR logic was found open. l 7 89 80 ne l l~

7 89 80 DE I I SA  % POWER CTHER STATUS DtSC VERY OrSCOVERY DESCRiPTON 7 8 9 Q 10 l0l2l5l12 l13 NA l W l NA l 44 45 46 80 EE50 0 AMOUNT OF ACTivffY LOCATON OF RELEASE H Lgj La_jLEASEl NA l l n  ! -

7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES Nuver n TYPE DESCAipf0N 8 101 01 0l11 La J 7 89 l NA l 12 13 . 80 PERSONNEL INJURIES NUMBEA ' OESCRsPTON i4 101010l l n I 7 89 11 12 80 OFFSITF CONSEOUENCES El 7 89 n l l 80 LOSS OR OAMAGE TO FACluTY

? v PE otsCastON -

. hfA l 7 89 10 8306270056 761007 83 PUBUCITY PDR ADOCK 05000296 DE I S PDR , g 7 no 80 ADOiiiONAL f ACTORS

@ lThe open cable was replaced and the surveillance test performed satisfactorily. l 7 89 80 3i

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i 80 NIVE: PHONE:

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!- $ . TEN,NESSEE VALLEY AUTHORITY CH ATTANOOG A, TENNESSEE 37401 Or -n16 s

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t October 7, 1976 <

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e 0G e p Mr. Norman C. Moseley, Director U.S. Nuclear Regulatory Commission p. g58* g

, Office of Inspection and Enforcement '

Region II 230 Peachtree Street, NW., 8th Floor f

4 <% d pp Atlanta, Georgia 30303 -

Dear Mr. Moseley:

TENNESSEE VA1 ti'* ArtTHORITY - BROWNS FERRY NUCLEAR PLANI UNIT 3 -

DOCKETNO.f50-29[-FACILITYOPERATINGLICENSEDPR-68-REPORTABLE i.

OCCURRENCEMT BFRO-50-296/769 I The enclosed report is to provide details concerning the RHR pump 3C that failed to start on normal power during the performance of a surveillance test. This report is submitted in accordance with Browns s.

Ferry Technical Specifications Section 6. This event occurred'on Browns Ferry Nuclear Plant unit 3.

Very truly yours, TENNESSEE VALLEY AUTHORITY H. S. Fox

'd Director of Power Production Enclosure (3)

CC (Enclosure):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, D.C. 20555 g

Director (40)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 10507 i i i

l Af1 EQuJ1 Opporturoty Empicyer

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