ML17304B065

Confirmatory Action Ltr Re Actions Util Intends to Take Concerning Unusual Event on 890303

ML17304B065
Person / Time
Site:	Palo Verde
Issue date:	03/03/1989
From:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:	Karner D ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
References
NUDOCS 8903150021
Download: ML17304B065 (8)

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ACCESSION NBR:8903150021 DOC.DATE: 89/03/03 NOTARIZED: NO DOCKET FACIL:STN-50-530 Palo Verde Nuclear Station, Unit 3,'Arizona Publi 05000530 AUTH.NAME AUTHOR AFFILIATION MARTIN,J.B.

Region 5, Ofc of the Director RECIP.NAME RECIPIENT AFFILIATION KARNER,D.B.

Arizona Nuclear Power Project (formerly Arizona Public Serv

SUBJECT:

Confirmatory action ltr re actions util intends to take re unusual event on 890303.

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O n Jfypy 4 UNITED STATES NUCLEAR REGULATORY COMMISSION REGION V 1l60 MARIALANE, SUITE 210 WALNUTCR EEQ@lfORlgf4596.6368 CONFIRMATORY ACTION LETTER yp,+ 0 19')

Docket No. 50-530

'License No. NPF-74 Arizona Nuclear Power Project P.O.

Box 52034 Phoenix, Arizona 85071-2034 Attention:

Mr. Donald B. Karner Executive Vice President 6entlemen:

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 necessarily be limited to, the following:

1.

You will develop a plan for investigating this event and present it to the NRC prior to comencing troubleshooting of the atmospheri'c 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 Inspection Team (AIT) led by Mr. D. F. Kirsch of Region V.

He-.will ar rive 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.

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If our understanding concerning your proposed actions, as summarized

above, is not correct, you should promptly notify this office in writing..

Since ely, cc:

J. Taylor, DEDO T. Hurley, NRR E. Jordan, AEOD G. Knighton, NRR G. Holahan, NRR M. Virgilio, NRR Document Control Desk (RIDS)

I hn B. Hartin Regional Administrator

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-J RV/jk REQUEST C

PY RE EST COPY REQUEST C

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NO YES /

NO REQUEST COPY "NO SN'ES' NO

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MILLER 3/$

'89 ZIMMERMAN g~/'/3

/89 CHAFFEE MARTIN:

3/M /89 3/ '/89 bcc:

Project Inspector Resident Inspector docket file G.

Cook B. Faulkenberry J. Martin M. Smith J. Zollicoffer

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