ML20127J386

Confirmatory Action Ltr Re Understanding of Actions to Be Taken Concerning Unusual Event Occurring at Plant on 890303

ML20127J386
Person / Time
Site:	Palo Verde
Issue date:	03/08/1989
From:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:	Karner D ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
Shared Package
ML20127G485	List: ML20127G480 ML20127G512 ML20127J296 ML20127J361 ML20127J386 ML20127J403 ML20127J416
References
FOIA-92-87 CAL, NUDOCS 9301250122
Download: ML20127J386 (2)

Text

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% / WALNUT CREEgyoRg 5300 CONFIRMATORY ACTION LETTER Docket No. 50-530 License No. NPF-?4 Arizona Nuclear Power Project P.O. Box 52034 Phoenix, Arizona 85071-2034 Atte. tion: Mr. Donald B. Karner Executive Vice President Gentlemen:

The purpose of this letter is to confirm our understanding of the actions you intend to take regarding the Unusual Event which occurred on March 3,1989.

Based on the discussions held between Mr. A. E. Chaffee, of my staff, and you, it is our understanding that your actions will include, but will not recessarily be limited to, the following:

1. You will develop a plan for investigating this event and present it to the NRC prior to commencing troubleshooting of the atmospheric dump valves; reactor coolant pump fast transfer circuitry; steam bypass control system; offsite and onsite power supply breakers, switches and interlocks associated with this event; all valves and dampers which failed to automatically activate when called upon during this event; and, the power supply to the Control Room radiation monitor. This plan will include provisions for prior notice to-the NRC of your intent to release equipment from quarantine for troubleshooting or other essential purposes.

This notice shall provide sufficient time for NRC representatives to arrange for review of your specific troubleshooting procedures and to be present at the job site. None of the above shall preclude those ANPP actions needed to maintain and ensure plant safety.

2. You will conduct a thorough investigation and obtain a full understanding of the March 3,1989, Unusual Event and define the pre-restart and post-restart corrective actions needed as a result of this event. ,

3. You will brief the NRC upon completion of your investigation and will not restart (enter Mode 2) the Palo Verde Unit 3 facility prior to receiving NRC concurrence.

The NRC intends to review this event and your investigation of it with an Augmented Ihspection Team (AIT) led by Mr. D. F. Kirsch of Region V. He will arrive onsite at 8:00 a.m., March 4, 1989, to introduce his team and discuss the scope of the AIT inspection with ANPP management representatives.

l 9301250122 920e28 PDR FOIA l , JONES 92-B7 PDR y

Es- 03/03'1999- 16331 REACTOR SACETY 8. PPOJ PS 415 943 3755 P.03

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2 is not correct,-you should promptly ng ify this office in writing Since ely,

'd ? /%t' chn B. Martin Regional Acministrator cc: J. leylor, DEDO T. Murley, NRR E. Jordan, AE00 G. Knighton, NRR G. Holahan, NRR M. Virgilio, HRR Document Control Desk (RIDS) l-L l

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