ML20092P162

Advises That While Power Removed Manually from Three of Four RHR Suction Isolation Valves for App R & Security Reasons, Deviation from Branch Technical Position Described in SER, Section 5.4.4.1 Justified

ML20092P162
Person / Time
Site:	Catawba
Issue date:	07/03/1984
From:	Tucker H DUKE POWER CO.
To:	Adensam E, Harold Denton Office of Nuclear Reactor Regulation
References
NUDOCS 8407060014
Download: ML20092P162 (2)

Text

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/. 8 DUKE POWER GOMPANY P.O. BOX 03180 CHARLOTTE. N.C. 2824 2 "I"J.EN"

-- - July 3, 1984 (JE7IMEn Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Ms. E. G. Adensam, Chief Licensing Branch No. 4 Re: Catawba Nuclear Station Docket Nos. 50-413 and 50-414

Dear Mr. Denton:

Section 5.4.4.1 of the Catawba Safety Evaluation Report discusses compliance with BTP RSB 5-1. Therein it was requested that any necessary operator actions from outside the control room that are necessary to achieve cold shutdown be suitably justified.

Power is normally removed from three of the four RHR suction isolation valves during normal operation for Appendix R and security purposes. This is accomplished by opening and tagging the breakers at the respective motor control centers located outside the main control room.

This deviates from strict compliance with BTP RSB 5-1 which requires that cold shutdown be achievable from the main control ' room. However, it should be recog-nized that while opening these valves does require manual action outside the main control room (i.e., restoring power), there is ample time to accomplish this (several hours),and access to the breakers will not be restricted since they need be opened only during a normal (non-accident) shutdown.

We feel that operability of these valves is not significantly reduced as a result of the present method of power lockout.

Very truly yours, JA Hal B. Tucker ROS/php cc: Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 hD

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./ 0 Mr. Harold R.-Denton, Director July 3,1984

.Page 2' cc: NRC Resident Inspector Catawba Nuclear Station Robert Guild, Esq.

Attorney-at-Law P. O. Box 12097 Charleston, South Carolina 29412 Palmetto Alliance 21351 Devine Street Columbia, South Carolina 29205 Mr. Jesse L. Riley Carolina Environmental Study Group 854 Henley Place Charlotte, North Carolina 28207 4