ML19095A568
| ML19095A568 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 12/31/1976 |
| From: | Stallings C Virginia Electric & Power Co (VEPCO) |
| To: | Rusche B Office of Nuclear Reactor Regulation |
| References | |
| Serial No. 395 | |
| Download: ML19095A568 (1) | |
Text
,.
T VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 December 31', l976 Mr. Benard C. Rusche Director of Nuclear Reactor Regulation
- u. s. Nuclear Regulatory Commission Washington, D. c.
20555 Serial No.
395 PO~/ALH:dgt Docket Nos.
50-280 50-281 ATTN:
Mr. Robert W. Reid, Chief Operating Reactors Branch 4 License Nos. DPR-32 DPR-37
Dear Mr. Rusche:
In accordance with Technical Specification 4.14.C.1 for Surry Power
.Station, this report describes an occurrence during which the cooling water temperature at the discharge control structure exceeded an average rate of 3 degrees F per hour.
On December 19, 1976 from approximately 2100 to 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br /> the rate of change of water temperature at the discharge control structure was 6 degrees F per hour.
From 0400 to 0500 on December 20, 1976 the rate of change of the water temperature at the discharge control structure was 4 degrees F per hour.
The station status at the time of the event was Unit No. 1 at shutdown for refueling outage and Unit No. 2 was maneuvering for power escalation.
The immediate corrective action was to stop the load increase.
The event was caused by having three of Unit No. 1 condenser water boxes open for maintenance and thus not having ideal cooling water flow conditions to accomodate the power escalation rate.
Very truly yours, q;;fj~
- c. M. Stallings~
Vice President-Power Supply and Production Operations iRlegulatory Docket File
- 51. '