ML17300A465

Forwards Staff Evaluation of Operator Performance & Emergency Operating Procedures Re 860712 Reactor Trip. Procedures Program Did Not Appear to Meet Commitments Established During Licensing Process

ML17300A465
Person / Time
Site:	Palo Verde
Issue date:	09/10/1986
From:	Knighton G Office of Nuclear Reactor Regulation
To:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
Shared Package
ML17300A466	List: ML17300A465 ML17300A470 ML20212M495
References
NUDOCS 8609170138
Download: ML17300A465 (6)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 gyp 0

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~qpr Docket No.:

50-528 Nr. E.

E.

Van Brunt, Jr.

Executive Vice President Arizona Nuclear Power Project Post Office Box 52034 Phoenix, Arizona 85072-2034

SUBJECT:

Review of Palo Verde Procedures as Related to the July 12th Trip at Palo Verde Unit 1

In response to questions raised by R.

Zimmerman, Senior Resident Inspector at Palo Verde Nuclear Generating Station, NRR staff members have conducted a

review of actions'aken by the Palo Verde control room staff in dealing with an event that took place at Palo Verde Unit 1 on July 12, 1986.

This review involved an analysis of the Palo Verde Emergency Operating Procedures with the Combustion Engineering Procedures guidelines (CEN-152),

an examination of the post-trip review of the event, and the evaluation of operator actions as the reviewers understood them following discussions with plant staff and the senior resident inspector.

The results of this evaluation have been provided to Region V and are enclosed for your information.

One of these findings is that your procedures program did not appear to meet commitments established during the licensing process.

These "deviations" are related to the EOP's and crew response to the July 12, 1986 event as identified in Section 1.,

page 2 8 3 of the staff evaluation.

Furthermore, actions and instructions in the Diagnostic Flow Chart associated with tripping the reactor coolant pumps appear to be inconsistent with the current approved version of CEN-152 and with the plant's written procedures.

In addition, the use of parameter trending as indicated in CEN-152 to assist in event of diagnosis does not appear to be effectively incorporated into the Diagnostic Flow Chart, as indicated in Section 2 of the evaluation.

The reviewers have offered a number of recommendations for addressing the issues identified.

These recommendations suggest the need for a more reliable power source for instrumentation displaying the parameters necessary for event diagnosis (Section 3), and revisions to the Diagnostic Flow Chart to ensure that the proper sequence of steps are followed and that the Functional Recovery Pro-cedures are used when necessary.

The recommendations are provided for your consideration..

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(It should be noted that recommendations made with respect to possible modification of the CEN-152 will be discussed with Combustion Engineering by NRR staff).

Sincerely, ISI George W. Knighton, Director PWR Project Directorate No.

7 Division of PWR Licensing-B

Enclosure:

As stated cc:

See next page Distribution:

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Van Brunt, Jr.

Arizona Nuclear Power Project Palo Verde CC:

Arthur C. Gehr, Esq.

Snell 5 Wilmer 3100 Valley Center Phoenix, Arizona 85073 Nr. James N. Flenner, Chief Counsel Arizona Corporation Commission 1200 West Washington Phoenix, Arizona 85007 Charles R. Kocher, Esq. Assistant Council James A. Boeletto, Esq.

Southern California Edison Company P. 0.

Box 800

Rosemead, California 91770 Nr. Nark Ginsberg Energy Director Office of Economic Planning and Development 1700 West Washington - 5th Floor Phoenix, Arizona 85007 Nr. Wayne Shirley Assistant Attorney General Bataan Yiemorial Building Santa Fe, New Yiexico 87503 Nr. Roy Zimmerman U.S. Nuclear Regulatory Commission P. 0.

Box 239 Arlington, Arizona 85322 Ns. Patricia Lee Hourihan 6413 S. 26th Street Phoenix, Arizona 85040 Regional Administrator, Region V

U. S. nuclear Regulatory Commission 1450 Naria Lane Suite 210 Walnut Creek, California 94596 Kenneth Berlin, Esq.

Winston 5 Strawn Suite 500 2550 N Street, Nl.'ashington, DC 20037 Ns.

Lynne Bernabei Government Accountability Project of the Institute for Policy Studies 1901 Que Street, NW Washington, DC 20009 Ns. Jill Norrison 522 E. Colgate Tempi, Arizona 85238 Nr. Charles B. Brinkman, Yianager Washington Nuclear Operations Combustion Engineering, Inc.

7910 Woodmont Avenue Suite 1310

Bethesda, maryland 20814 Nr. Ron Rayner P. 0.

Box 1509

Goodyear, AZ 85338

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