ML20084T935

LER BFRO-50-259/7611W:on 760714,temp Indicator TI-64-55A Became Inoperable.Caused by Broken Lead Wire to Thermocouple Where Wire Terminates at Crimp Connector

ML20084T935
Person / Time
Site:	Browns Ferry
Issue date:	08/11/1976
From:	Fox H TENNESSEE VALLEY AUTHORITY
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
LER-BFRO-50-259-761, NUDOCS 8306240296
Download: ML20084T935 (2)

Text

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. 1 OlLI ENSEE EVENT REPORT

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l SE 97.18117 f.LL REQUIRED INFORMATitN)

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PE TvFE AME LEENSE NUMIIER j 01 l Al Ll El RlF l1 l l0 l0 l-l 0l 0l 0l 0l 0l-l 0] 0l l4 l1 l1l1l1l 30 l0 l3 l 31 32 15 25 2G 7 89 ,14 EVENT DATE REPORT DATE CATEGCAY S DOCKET NUMBER j 01 CON'i l l l T

l Ll lL l l0 l5 l0 l-l 0 l 2 l 5 l 968l l0 l7 l1 l 4l 7l 6l 74 l

75 l l l l l 60 l

60 61 69

'7 8 57 58 59 EVENT DESCR:PTION l

g l Lead wire to thermocouple broke, making TI-64-55A inoperable (torus water temperatu 80 (7 89 TIS-64-55 was operable with four (4) redundant thermo- l

' Q l Fuel loading was in progress. 80 4 7 89 The wire, broken in the l l @ l couples to monitor. This is the first failure of this type. 60 J 7 89 l f $ l weatherhead'. was reterminated. (BFRO-50-259/7611) 60 5 7 89 ' l 1 3G I pwg 80

7 89 VOLATON MA AC R COMPONENT CODE l! Q OE lIlFl l El OCE l1lNlSlTlRlUl17 d 44 lC l5 l9 l5 l 47 b48 12

• 43 7 89 10 11

! CAUSE DESC9'PTION l

j g l Temperature indicator TI-64-55A was inoperable due to a break at a point where 60 th

}7 89 Cable is 2 conductor # 16 TVA l

g l thermocouple lead wire terminates at a crimp connector. ,

eO 7 89 l j @ l type WUB. Wire was reterminated without a crimp connector.

METHOD oF FACILITY DISCOVERY OfSCOVEAY OESCAGTCf4

% POWER OTHER STATUS j Q STATUS y l 0l 0l 0l 12 13 l

NA 44 l Q 45 46 l TI INDICATED FULL SCALE 80 l

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AMCUNT OF ACTMTY 4 RELEASED NA NA l (Q

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45 l so I PERSONNEL EXFOSURES NUMBER TYPE DESCRIPTON '

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PERSONNEL INJURIES NUMBEA DEbORIPTON l

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( 7 89 11 12 1

l OFFSITE CCNSECUENCES l NA i Hl 7.89 80 '

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LOSS OR OAMAGE TO FACluTY '

TYPE oESCRIPTICN

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. 8306240296 760811 PO8UCITY PDR ADOCK 05000259 PDR g NA- S gl 60 l 7 89 ADDIT 8CNAL FACTORS "A i EI 7 89

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, MICNE:

.NAME;% _ - - - ~-._ -.._-.__._. ,.__ _._ , _ _ _op o es t . e : T

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$ TENNESSEE VALLEY AUTHORITY 6 5

'd $ CHATTANOOG A. TCNNESSEE 37401 ,

$ #7 6 7 -19N

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August 11, 1716 '4 ' O A* 'O L

• Mr. Nor:nn C. Moselcy, Director l M]g jg7g, Si U.S. Naclear Regulatory Cosaission '

Region II 7, we,gy

%,,[,****r 230 reachtrco Street, IM., 6th Floor b At.lanta, Georgia 30303 s g C Doar Mr. lioscley:

'i2:ICCSSEE VM AU1HOETI - BR0;lIiG Ir.:RRY s NUCLIRR FIANT LCIIT 1 -

DOCKET NO. 50-259 - FACIIJTY OILATIIU LICElGE DPR REPORTABLE OCCUaT::rCE REPoar BFRO-50-259/76uW

'Iho cnclosed report is to provide details concerning the load wire <

to thozzocotolo uhich broke, mting TI-64-55A inoperable (torus water temperaturo), and is cub.dtted in accordanco with Appendix E to Regulator / Guide 1.16, Revision 4, August 1975. This event occurred on Brcr.ms Ferry Hucicar llant unit 1.

Very truly yours, TEIElH3SEE VAILEI AUTHOETI H. S. Fox Director of Fover Froduction Enclosure (3)

CC(Enclosure):

Directc,e (3)

Office of I/.inacccent Infor.:ation.and Progran Control

• U.S. Huc1 car Rog11atorf Coatission Washington, D.C. 20555 .

Director (14)/ Ng gNE EN10 '

. Office of Ingcction and Enforecent U.S. Unt'1rme Regulatory Co. mission Washizy; ton, D.C. 20555 8T/9 An Equal Opportunity Employer l l

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