ML18283B454

LER 1977-006-00 for Browns Ferry, Unit 3, Start Circuit 1 of D/G 3D Was Found Inoperable Because of Relay Failure in Speed Sensing Circuit During Performance of Scheduled Maintenance Test

ML18283B454
Person / Time
Site:	Browns Ferry
Issue date:	12/14/1976
From:	Fox H Tennessee Valley Authority
To:	Moseley N NRC/RGN-II
References
LER 1976-019-00
Download: ML18283B454 (6)

Text

NRC FoRM 196 U.S. NUCLEAR REGULATORY Co ION DOCKET NUMBER I2.76 I 5O-296 FILE NUMBER NRC DISTRIBUTION FoR PART 50 DOCKET MATERlAL INCXDENT REPORT-orman C. Mose ey FROM: Tennessee Valley Authority DATE OF DOCUMENT Chattanooga. Tenn. 37401 12-1II-76 H. S. Fox DATE RECEIVED 12-16-76 Pg LETTER ONOTORIZED PROP INPUT FORM NUMBER OF COPIES RECEIVED QORIGINAL 4rkJNCLASSIFIED 1 cy

~Ot Y DEscRI~TIoN Ltr. Trans The Following: " E Licensee Event Report (AFROgp296/

7619) on 11-26-76 concering start circuit 1 found inoperable because of relay failure...

ACKNOVG EDGED OOX0X',anrOVE (X encl rec I R)

PLANT NAME. 3RQWNS FERE UNIT g 3 NOTE: IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J COLLINS FOR ACTION/INFORMATION BRANCH CHXEF W 3 CYS FOR ACTION LIC ~ ASST,:

W CYS ACRS CYS on INTERNAL D IST Rl BUTION REG F C it X&E(2 MXPC SCHROEDER/IPPOLITO HOUSTON NOVAK/CHECK GRIMES CASE BUTLER TEDESCO/MACCARY EISENHUT BAER SHAO VOL~R/BUNCH KREGER/J ~ COLLXNS EXTERN'AL DISTRIBUTION CONTROL NUMBER LPDR:

N

.~7+peg

4'

'l (+I J' /f'I k

pl UTIQy

~ 0 -p z TENNESSEE VALLEY AUTHORITY V rn CHATTANOOGA. TENNESSEE 37401

~P

'~~a-19<~

December 14, 1976 ICUietory Docket File Mr. Norman C. Moseley, Director U.S. Nuclear Regulatory Commission Office of Xnspection and Enforcement I'.egion IX

'= <tI'""

1S76~

pic 4 0 gogtATO~

230 Peachtree Street, bU., 8th Floor Atlanta, Georgia 30303 ~

U,s, t ~Uhtee ttgI ~0+

Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY - BROI~NiS PERRY NUCLEAR PLANT DOCKET NO. 50-296 - PACXLXTY OPERATXHG LXCEHSE DPR<<6S - REPORTABLE OCCURRENCE REPORT BFRO-50-296/7619 Thc enclosed report is to provide details concerning start circuit l of D/G 3D that was found inoperable because of a relay failure in the speed sensing circuit during the performance of a scheduled maintenance test. This report is submitted in accordance 1rith Brows Perry.

Technical Specifications Section 6. This event occurred on Bromts Pert'y Huc1ear Plant tlnit 3, Very truly yours, TEIVESSEE VALLEY AUTIIORITY 6',~l H. S. Fox Director of Po1rer Production El 0 Enclosure (3)

CC (Enclosure):

Director (3)

Office of Ma agement Information and Program Control U,S. Nuclear Regulatory Commission washington, .C. 20555 Office of Inspection and Enforcement U,S. Nuclear Regulatory Commission washington, D.C. 20555 iw c'6y An Equal Opportunity Employer

e'J l

g)~,

l,~l 5 l ll N 1

4~ I, jyl II p

/

~ ~ JV.PP

'g'yi; ~ ~

e ',~

)I C.

H J.

EVENT REPORT LICENSEE

'Ip,CONTROL BLOCK:

1 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE Jog d L E R P 3 0 0 0 0 0 0 0 0 0 O 1 1 1 1 ~03

~

7 89 14 15 25 26 30 31 32 REPORT REPORT "CATEGORY TYPE SOURCE OOCKET NUMOER EVENT DATE REPORT OATS Ion~tooer 0 5 0 0 2 9 6 1 1 2 6 7 6 7 8 57 58 59 , 60 61 68 69 74 75 80 EVENT DESCRIPTION,

'uring the performance of a scheduled maintenance test. start circuit of 89',

Ionst 1 0/G .3~0lsac 89 80

~03 found ino erable because of a rela failure in the s eed sen~in ci cu 7 ~ 80 Qp 4 redundant start circuit 2 was operable. The relay was replaced. (BFRO-SO-296/7619) 7 8 9 80 Jog 7 8 9

~06 7 8 9 P$ vME 60 SYSTEM CAUSE COMPONENT COMPONENT CODE COOE COMPONENT COOE SUitPUER MANUFACTUAER VIOLATION Ioort ~EB E R E 1 6 0 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION

~0 8 An Electromotive Division m'odel 8327263 rela failed in start circuit 1 s eed 7 8 9 80 tQ8 9 sensin circuit reventin the circuit from sensin diesel eed 7 80 Q1 $ I Tsras rePlaced and the test in Progress was completed.

7 89 METHOO OF FACILITY STATUS %i POWER OTHER STATUS OISCOVERY OISCOVERY OESCRIPTION gg8 . 3 ~oa 3 NA NA 7 9 10 12 13 44 45 46 FORM OF ACTIVITY CONTENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE tiiat 3 ~a NA NA 7 8 9 10 11 44 45 80

, PERSONNEL EXPOSURES NUMOER TYPE OESCRIPTION Q~g ~00 0 ~g NA 7 8 9 11 12 13 PERSONNEL tN JIJRIES NUMOER OESCRIPTION

~~~ ~oo o NA 80 7 8 9 11 12 OFFSITE CONSEGUENCES 7 8 9 80 LOSS OR DAMAGE TO FACILtl'Y TYPE OESCRIPTION EBB L>J 7 89 10 80 PUBLICITY 7 89 60 ADDITIONAL FACTORS Q~ g lhis nas a random failure and no additional action is re uired.

7 89 s Q~g 7 89 80 PHOt IE:

m ~