ML20084T928

LER BFRO-50-259/7613:on 760807,control Room Annuniciator XA-55-8E for Fire Protection Sys Smoke & Heat Alarms Failed. Caused by Power Supply Transformer Failure in Lundell Controls 310948 Power Supply Card

ML20084T928
Person / Time
Site:	Browns Ferry
Issue date:	09/02/1976
From:	Fox H TENNESSEE VALLEY AUTHORITY
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
LER-BFRO-50-259-761, NUDOCS 8306240287
Download: ML20084T928 (2)

Text

V

~

o LICENSEE EVENT REPORT )f,i.tAtt eniur att a ISanot stocol 1

Vl l  !  !  !

6 I c

'$p'E o k LctNst rauveER

't ltj LA I L l B ! R l F l Il l O! 0l-l0 l0 l0 l 0 l 0 l-l 0 l 025l l264l 1l1l1l1l l0l3l 32 30 31 7 60 14 15 EVEf4T DATE A8'*0AT CATE CA rir.04 F "' ((s# sToS$ cocxtf 74UV WR

@cor,T l l l T

lLl lLl 10 l 51 0 j -l 0 l 215 [ 9 l [0j 8 [ 0j 7 l 7 l 6 l l l l l l l 60 l

68 69 74 75 7 6 57 56 59 60 61 FVEfC GEFCR*TCN j

[3JP l Control room annunciator XA-55-8E which is for fire protection system smoke and 00 7 Uv . l

- @ l heat alarms failed. BFRO-50-259/7613 80 7 09 e;

7 89 f

@lI 7 89 '

60 l

b!

7 89 py,.E c0 COMPetrar covPo mi sesn u Cat.sr SUPPL ER MANUFACTLGiA V.OJTCM C.C CE OODE COMPCtJENT CODE

@) [ AM] lEj l A lN lN l Ul Nl Cl (L l lL l2 l9 l5 l lN l 17 43 44 47 45 7 30 10 11 12 '

j CAUSA. DEECR.FitOt4 310948 power

@ ! A power supply transformer failed in the Lundell Controls part no. 6c 7 st

$ bgly card for the statalarm annunciator. The card was replaced and the annunciator l

60 7 ae l

@ [was returned to normal. e,3 VETHOO CF Ft t w v O SCOvCPY CISC0v6AY CESCaP7 0*J g*A*d  % F Q v'If R SThER STATUS h lHl l0l0l0l12 l13 N/A 44 l W45 lOperatorsmelledhottransformer 46 50 l

7 8 9 10 LOCAT'ON OF HCt. EASE AIF 5 CC AMOUNT CC ACTIVITY l

N/A 7 -8 0 (l lZl LASE l 10 11 N/A 44 l l 45 E3 FERSOffNEL EXPOSURES

?N V009 ftP3 OESC.LPTION J

M 1010101 Iz! l 13 N/A OG 7 89 11 19 PERSONNEL INJU3:ES 74 wh9 cts A.oticN l N/A El10101Ol11 12 7 G9 I 63 OffSITE CONSEQ.ENCES l

h[

7 69 N/A - so LOSS 09 DAM AGE TO FACILITY 8306240287 760902 Ti r.- rctes ncta PDR ADOCK 05000259 N/A S PDR Q 'J 7 a9 10 l

PUBLtCITY -

l

$I8P

'7 N/A b0 AOO!?CNAL FACTORE l

$[

7 P2 N/A _

m LO 7 t.4 11 e _

~. _

• ' _ . rn sm.T; __

d

"** ds99pu

+

O TENNESSEE VALLEY AUTHORITY O

Y g

. A z CHATTANOOGA. TENNESSEE 374ot M/6 *19N September 2, 1976 c C g

b Mr. Noz.cnn C. Moseley, Director SY S U.S. Nuclear Regulatory Cocaission Recion II  ! c,g{p7 IS/gg ;_S 230 Peachtree Street, W., 8th Floor I" Atlanta, coorc,1a 30303 . ka h

Dear Mr. Moseley:

s, THUE:3SEE VALICY AU'HIORITY - E20kTiB FERRY UUCITAR FIANT UNIT 1 -

DOCKET NO. 50-259 - FACILITY orERATIHG LICEISE DPR REPORTABLE OCCURREHOE REPORT BFRO-50-259/7613

'Jhc cnclosed report is to provido details concerning the failure of the control room annunciator XA-55-6E which is for fire protection .

syste.,1 s oke and heat alar:3. This report is submitted in accordance with Brows Ferry Technical Specifications Section 6. This event

, occurred on Browns Ferry I'uclear Plant unit 1.

Very truly yours, TEKNESSEE VALLUY AUTIIORITY H. S. Ibx Director of Pouer Production

(

Enclosure (3)

• CC(Enclosure):

t Director (3)

• Office of Ihnaccment Informtion and Program Control U.S. Huelcar Regulntory Commission Washington, D.C 20555 ,

fuvector- (ld Office of Inspection and Enforcement U.S. Huelcar Regulatory Comission l Washington, D.C. 20555 An Equal Opportunity Employer 9136

! usy SENT REGION '

g