ML20085M199

AO BFAO-744W:on 740116,during Routine Surveillance Testing of Diesel Generator,Diesel Engine B Failed to Start W/Left Bank of Starters.Caused by Rust & Possible Inadequate Lubrication.Replacement Starter Installed

ML20085M199
Person / Time
Site:	Browns Ferry
Issue date:	01/25/1974
From:	Eric Thomas TENNESSEE VALLEY AUTHORITY
To:	Oleary J US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20085M206	List: ML20085M199 ML20085M210
References
AO-BFAO-744W, NUDOCS 8311080112
Download: ML20085M199 (2)

Text

~

'1 A

O u

TENNESSEE VALLEY AUTI-lOAITY I~7n, 'r7 '7

' ~~ y CHATTANOOGA, TENNESSEE -

• ' 374O'1 L .ef./ A 3

i b(-[f(^~::.% a t, January 25, 1974 yktyd[

}l&}$'Q'T

.,MfW L r% nrA Mr. John F. O' Leary, Director I Directorate of Licensing .

Office of Regulation ,

U.S. Ato::lic Energy Co= mission

~ Wrishington, DC 20545

Dear Mr. O' Leary:

TEIIITESSEE VALLEY AUTHCRITY - BROWS FERRY ITUCLEAR PLANT iUIT 1 -

DOC:GT 170. 50-259 - FACILITY OPERATIM LICEliSE DPR ABliORMAL  !

OCCURREliCE REPORT BFAO-744W The enclosed report is to provide details concerning start syste:: 1 failure on standby diesel engine which occurred on Browns Ferry IIuelcar Plant unit 1 on Jcnuary 16, 1974, and is submitted in accordance with Appendix A to Reguintory Guide 1.16, Revision 1, October 1973.

Very truly yours, 7 ~N-e s,- .

TEICIESSEE VALLEY AUTHORITY l' , '

4 .. ,

s

,. , . Th_

Jirector of Power Production A .,g% Ng 9> '

/ "U Enclosure  %/g C CC (Enclosuro): - - .

Mr. ITorman C. Moseley,= Director .

Region II Regulatory Operations Office, USAEC '

230 Peachtree Street, liki.

Suite 818 Atlanta, Georgia 30303 8311000112'740125 "

COEy 3F;ST REGIO ( >

S PDR ADOCK 05000259

- PDR _c__ ,

I[/

j

.V6\-

oc

_g wa

6 fJ43 % hiquiL r>Nf%'>' 3 M-f,.h9 r= eM- '

g- 4 b-. +3g *g .. w. .g

.ggg,g_m a' i. 1 - _____m _ _ _. _ _ _i____._______________i__h_~.'_ . IM

F, # _m_-____ .. _._.

J o

=

.O -

ABNORMAL OCCURRENCE REPORT r

Report No.: BFAO-744W Report Date: January 25, 1974 Occurrence Date: January 16, 1974 Facility: Browns Ferry Euclear Plant unit 1 Identification of Occurrence Start system failure on standby diesel engine.

Conditions Prior to Occurrence Reactor was at 50-percent power.

Description of Occurrence On January 16, 1974, during scheduled surveillance testing of the diesel generator, diesel engine B failed to start with the -left bank of starters; however, it did start satisfactorily with the right bank of starters.

Analysis of Occurrence Each diesel engine contains two co=pletely independent air-starting syste=s,-

either of which is capable of starting the engine. When the:left bank of starters did not start the engine in the required time, the right bank of starters was

~

- energized automatically and started the engine. Failure of the left-bank starters threatened the starting capability of the diesel generator but did not render it-inoperable. The left-bank. starters failed to develop enough torque-to: start the engine.. .

Corrective Action The lower starter of the left bank was removed from the engine. IA replacement;

~

starter was installed. The engine started satisfactorily using the replacement. .

c starter. This assembly of the failed starter. revealed rust from air supply piping i and possible lack of adequate lubrication'from the air.line lubricator. The air w

! line lubricator was adjusted to provide. necessary lubrication to the starters, .

!- and all' other diesel generator air line lubricators ' vere inspected for proper :

operation. . Frequency of ' inspection of the diesel starting air' systems will be increased from annual to s eiannual.

i Failure Data .

r L- Starter data: -Ingersoll-Rand, size 150_'BMP,JModel 289RH-49 1.

1 -.

l

~

W b . _u .. __

~

_b