ML20079J138
| ML20079J138 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 01/18/1984 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| 758A, GL-83-41, NUDOCS 8401240225 | |
| Download: ML20079J138 (2) | |
Text
.
VIRGINIA Ex.ncrHic AND POWER COMPANY Ricunoxn, VIRGINIA 23261 W.L. STEWART January 18, 1984 xdf.".Y,*m1'11.
Serial No: 758A Mr. Harold R. Denton, Director N0/DWL: jab Office of Nuclear Reactor Regulation Docket Nos: 50-338 Mr. Darrell G. Eisenhut, Director 50-339 Attn:
Division of Licensing License Nos: NPF-4 U. S. Nuclear Regulatory Commission NPF-7 Washington, D. C.
20555 Gentlemen:
VIRGINIA ELECTIRC AND POWER COMPANY NORTH ANNA POWER STATION RESPONSE TO GENERIC LETTER 83-41 The following is a response to Generic Letter 83-41 which requested voluntary information regarding premature diesel engine degradation caused by starts with rapid acceleration and loading without prelubrication and warmup.
1 and 2 diesel generators have undergone design changes to alleviate problems associated with fast cold starts.
Therefore, for the i
The North Anna Unit 1, 1982 to Dec. 1, 1983) the Unit 1 ciesel generators The period in question (Dec.did not experience any fast cold starts as defined in the Generic 2 diesels, 2H and 2J, have had two fast cold start each.
Both starts signals.
Unit were a result of actual Safety Injection start A review of the maintenance records on the Unit 2 diesels showed n of the fast cold starts.
However, we think detrimental ef fects as a result i
whether the number of starts required by the Unit 2 Technical Specificat ons,the reliability factor increase are excessive and do not hot or cold starts, of the diesels.
1, 1983 the Unit 2 diesels have each been started an average of five times per month.
This frequency of testing results in more From Dec. 1, 1982 to Dec.
preventative maintenance, repair, and downtime.
- Also, trequent testing reduces the amount of time before the diesel reaches its designed 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> rating at 3 MW and would require a maintenance overhaul.
If you have any questions regarding our response, please contact us.
Ve y truly yours, I
b goot W. L. Stewart I o cc's attached 8401240225 840118 PDR ADOCK 05000338 W-_-___-_
s a
VamotxtA EtzeralC AND Powra COMPANY TO Mr. Harold R. Denton cc:
Mr. James R. Miller, Chief Operating Reactor Branch No. 3 Division of Licensing Mr. M. W. Branch NRC Resident Inspector North Anna Power Station i
l
!