ML18139B499
| ML18139B499 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 08/25/1981 |
| From: | Leasburg R VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Varga S Office of Nuclear Reactor Regulation |
| References | |
| 515, NUDOCS 8108270651 | |
| Download: ML18139B499 (1) | |
Text
VIRGINIA ELECTRIC.AND POWER Co:M.PANY RICHMOND.,. VXRGINIA 23261 R.H.LEASBURO VrcB PR:EsrnBNT NUCLEAR 0PERATXQNS August 25, 1981 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. 515 NO/RMT:acm Docket No. 50-281 License No. DPR-37 This letter report is submitted in accordance with the provisions of Surry Power Station Technical Specification 4.14.C.1.
During the period of 0100 to 0200 on August 13, 1981, the condenser cooling water outlet temperature exceeded the maximum rate of change of 3F/hr permit-ted by Technical Specification 4.14.A.3.
The average rate of change during this period was 4F/hr.
At the time of this event, Unit No. 1 was operating at approximately 100% power and Unit No. 2 was ramping down in power as a result of problems with a feedwater pump.
During the Unit No. 2 ramp, a shear pin on one of the condenser inlet screens sheared, causing perturbations which resulted in the outlet temperature rate of change exceeding that allowed* in the Technical Specifications.
It should be noted that all due care and caution were exercised during the power de-escalation.
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
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