ML18139A848

Ro:On 801102,during Cold Shutdown,Condenser Cooling Water Outlet Temp Exceeded Max Rate of Change of 3 F/Hr.Caused by Lack of Svc Water Flow Through Unit 1.No Detrimental Evidence Found Re River Environ

ML18139A848
Person / Time
Site:	Surry
Issue date:	11/19/1980
From:	Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Harold Denton, Varga S Office of Nuclear Reactor Regulation
References
936, NUDOCS 8011240091
Download: ML18139A848 (1)

Text

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November 19, 1980 U~i Hitt . .. .

!!;fS TRiGUT !Off S~l1e:ES 1

Mr. Haf~§ff~

• Denton, Director Serial No. 936 Office of Nuclear Reactor Regulation NO/RMT:jmj Attn: Mr. Steven A. Varga, Chief Docket No: 50-281 Operating Reactor Branch No. 1 License No.: DPR-37 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Denton:

This letter report is submitted in accordance with the provisions of Surry Power Station Technical Specification 4.14.C.l.

During the period from 0700 to 0800 on November 2, 1980, the condenser's cooling water outlet temperature exceeded the maximum rate of change of 3° F/Hr permitted by Technical Specification 4.14.A.3. The maximum rate of change during this period was 3.5° F/hr. At the time of this event, Unit No.

1 was at cold shutdown and Unit No. 2 was at 40% power escalating to full power operation.

The lack of service water flow through Unit No. 1 is believed to be a major contributing factor to this event. It should be recognized that all due care and caution were exercised during the power escalation.

A search was conducted to determine if the temperature change had affected the river environment. No detrimental evidence was found.

Very truly yours, 11112-b B. R~ylvia Manager - Nuclear Operations and Maintenance cc: Mr. James P. O'Reilly