ML19093B585
| ML19093B585 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 12/31/1976 |
| From: | Stallings C Virginia Electric & Power Co (VEPCO) |
| To: | Reid R, Rusche B Office of Nuclear Reactor Regulation |
| References | |
| Download: ML19093B585 (1) | |
Text
_,.,~
e VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 December 31, 1976 Mr. Benard c. Rusche Serial No.
395 PO&M/Alli:dgt Director of Nuclear Reactor Regulation
- u. s. Nuclear Regulatory Commission Washington, D. c.
20555
- Docket Nos~
50-280.,
50-281 ATTN:
Mr. Robert W. Reid, Chief Operating Reactors Branch 4 Lice~se Nos. DPR-32 DPR-37
Dear Mr. Rusche:
In accordance with Technicai Specification 4.14.C.l 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.
Ort 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 hou.r.
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,
@tPr-:-
- c. M. Stallings~
. Vice President-Power Supply and Production Operations
- 51..
C