ML17303A303
| ML17303A303 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 02/11/1987 |
| From: | Marlone Davis Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8702250036 | |
| Download: ML17303A303 (6) | |
Text
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FEB 11 SN Docket No.:
50-530 S702250036 S70211 PDR ADOCK 05000530 8
PDR LICENSEE:
Arizona Public Service Company FACILITY:
Palo Verde, Unit 3 S~Z p$
SUBJECT:
SUMMARY
OF MEETING ON PALO VERDE, UNIT 3, DIESEL GENERATOR FAILURE A meeting was held in Bethesda, Maryland on January 20, 1987, with representa-tives of the licensee.
The purpose of the meeting was to discuss the failure, on December 23, 1986, of the 3B Emergency Diesel Generator on Palo Verde, Unit 3, and corrective actions.
Enclosure 1 lists the meeting attendees which included NRC technical staff and consultants.
The meeting is summarized as follows:
SUMMARY
The licensee's presentation was based on the viewgraphs provided as Enclosure
- 2. The licensee's conclusion was that the failure of the 89 MASTER ROD was caused by the use of crack-prone iron plating for repair of overmachined surfaces during manufacture.
The master rod fracture mode was high cycle fatigue, with very low overstress.
Part 21 reports are being filed by the licensee and by the diesel manufacturer.
All rods with iron plating in high stress areas have been removed (connecting rod cylinder number 9 in diesel 2A, and cylinder number 2 in diesel 3B).
One nickel spray plated rod was removed from the'A diesel and replaced due to some slight disbonding of the repair material.
The licensee agreed to ultrasonically inspect the three nickel spray repaired rods on the 2B diesel.
This technique appeared to detect cracking on the 3B diesel inspections.
Based upon the briefing, the staff feels that the investigation has been well organized, involved appropriately qualified personnel of the licensee, its contractors and the diesel manufacturer.
Final staff judgment will be reserved on the root cause and repair until the the final report is received.
j5/
Enclosures:
As stated cc:
See next page Michael J. Davis, Project Manager PWR Project Directorate No.
7 Division of PWR Licensing-B PBD7 MJDavis 2/1 ) /87
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Mr. E. E.
Van Brunt, Jr.
Arizona-. )uclear Power Project Palo Verde CC:
Arthur C. Gehr, Esq.
Snell 8 Wilmer 3100 Valley Center Phoenix, Arizona 85073 Yir. James M. Flenner, Chief Counsel Arizona Corporation Comnission 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, Cal ifornia 91770 Mr. Yark Ginsberg Energy Director Office of Economic Planning and Development 1700 West Washington - 5th Floor Phoenix, Arizona 85007 Mr. Wayne Shirley Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503 Mr. Roy Zimmerman, U.S. Nuclear Regulatory Commission P. 0.
Box 239 Arlington, Arizona 85322 Kenneth Berlin, Esq.
Winston 8 Strawn Suite 500 2550 M Street, NW Washington, DC 20037 Yis. Lynne Bernabei Government Accountability Project of the Institute for Policy Studies 1901 gue Street, NW Washington, DC 20009 Mr. Ron Rayner P. 0.
Box 1509
- Goodyear, AZ 85338 Mr. Charles B. Brinkman, Manager Washington Nuclear Operations
'Combustion Engineering, Inc.
7910 Woodmont Avenue Suite 1310
- Bethesda, Maryland 20814 Ms. Patricia Lee Hourihan 6413 S. 26th Street Phoenix, Arizona 85040 Regional Administrator, Region V
U. S. Nuclear Regulatory Commission 1450 Maria Lane A'uite 210 Walnut Creek, California 94596
MEETING
SUMMARY
DISTRIBUTION Docket No(s):
5Q 53Q NRC PDR Local PDR PBD-7 Reading JPartlow
'GWKnighton BGrimes ACRS (10)
EJordan
- Attorney, OELD Project Manager M. Davis JLee NRC PARTICIPANTS
I'.',X icitza M. Davis C. Miller E. Tcmlinson' L. Ruth R. Wright D. Sellers J. Calvo G. Knighton J. Raleigh bcc:
Applicant 8 Service List
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