ML18139B846
| ML18139B846 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 04/16/1982 |
| From: | Leasburg R VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Varga S Office of Nuclear Reactor Regulation |
| References | |
| 229, NUDOCS 8204190218 | |
| Download: ML18139B846 (1) | |
Text
VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND.., VIRGINIA 23261 R.H.LEASBUBG VxcE PREsXDENT NucLEAR OPERATIONS April 16, 1982 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn:
Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Gentlemen:
Serial No. 229 NO/RMT:acm Docket Nos. 50-280 50-281 License Nos. DPR-32 DPR-37 This letter report is furnished in accordance with the provisions of Surry Power Station Technical Specification 4.14.C.1.
During the period of 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> to 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br />, April 3, 1982, the average rate of change of the Condenser Cooling Water Outlet Temperature was 4°F/hr. which exceeds the 3°F/hr. rate of change permitted by Technical Specification 4.14.A.3.
At the time of this event, Unit 1 was at 100% power and Unit 2 was at 95%
power.
After removal of Unit 1 "C" water box from service for cleaning a seventh circulating water pump was started.
In response to an increasing canal level the the water box outlets were throttled opened and the groin temperature dropped at a rate greater than 3°F/hr.
The operator then stopped water box throttling to allow groin temperature to stabilize.
Personnel involved have been re-instructed on the importance of making gradual changes in flow through the water boxes.
A search was conducted to determine if the temperature change had affected the river environment.
No detrimental evidence was found.
cc:
Mr. James P. O'Reilly Regional Administrator Region II 0~.-8204190218 820416 -
.:.. PDR ADOCK 05000 280
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Very truly yours,
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l R. H. Leasburg