ML20083H970
| ML20083H970 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 01/06/1984 |
| From: | Clayton F ALABAMA POWER CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| GL-83-41, NUDOCS 8401160084 | |
| Download: ML20083H970 (2) | |
Text
.
Malling Address
- Alibim2 Power Company
- GM North 18th Street Post Office Box 2641
. Birmingham. Alabama 35291 Telephone 205 783-6081 F.1. Clayton, Jr.
Senior Vice President Flintridge Building AlabamaPower Docket Nos. 50-348
"* *'" S*C SA'8
50-364 January 6, 1984
-Director, Nuclear Reactor Regulation U. S. Nuclear Regulatorv Commission Washington, D. C. 20555 Attention:
Mr. D. G. Eisenhut Fast Cold Starts of Diesel Geneistors Generic Letter 83-41 Gentlemen:
Enclosed is Alabama Power Company's response to the subject letter dated December 16, 1983 which relates to cold starts of diesel generators.
If there are any questions, please advise.
Yours truly, y -
F I
h. L. Clayton, Jr.
FLC/0VK:kc/D-324 cc:
Mr. R. A. Thomas Mr. G. F. Trowbridge Mr. J. P. O'Reilly Mr. S. A. Varga Mr. E. A. Reeves Mr. W. H. Bradford h
g o,p 8401160004 840106 PDR ADOCK 05000348 P
e e
e -
ALABAMA POWER COMPANY-RESPONSES TO GENERIC LETTER 83-41 QtTESTIONS 1.
How many times in the past year (December 1, 1982 to December 1, 1983) have your emergency diesel generators been subjected to a fast cold start (without prelubrication and warmup of any moving parts of the diesel generators)? Provide your data on a per machine basis, for each of the following three categories:
(a) surveillance testing, (b) maintenance activities and (c) actual demands.
' Response Cold Starts of Diesel Generators (December 1, 1982 through December 1, 1983)
Inadvertent Starts Diesel Surveillance Test Due to Personnel Generator Cold Starts Error er Equipment Failure Total IC 6
3 9
1B 4
1 5
1-2A 6
2 8
2B 3
1 4
2C 6
2 8
2.
What is your assessment of the effects of frequent fast cold starts on diesel generator reliability and availability? Do you believe that they significantly degrade reliability and availability?
Response
It is the judgement of Alabama Power Company that fast cold starts exacerbate bearing wear due to the lack of prelubrication and that i
operating a " cold" diesel engine loaded will accelerate wear of engine components.
In December 1983, one diesel generator's thrust bearing and another l
diesel generator's upper main bearing were determined to be at the l
point of failure during maintenance inspections. In both cases, the l
vendor technical representative stated that these problems were possibly due to inadequate prelubrication.
It is Alabama Power Company's position that diesel generator fast cold l
starts should be avoided unless required by emergency situations.
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