ML20147E742

Diesel Generator Annual Rept 1987

ML20147E742
Person / Time
Site:	San Onofre
Issue date:	02/29/1988
From:	Morgan H SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8803070140
Download: ML20147E742 (2)

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$AN ONOFRE NUCLEAR GENERATING STAT)ON e.o.soxias

$AN CLEMENTE. CALIFORNIA 92672 H.E. MORGAN tstre. cows esas on uu sagn man ue-ow February 29, 1988 U. 3. Nucimu Regulatory carmission W= ant control Desk Washington, D.C. 20555 SubM: Docket No. 50-362 Diesel Generator Annual Report - 1987 San Onofre Nucl. ear Generating Station, Unit 3 Pursuant to Sections 6.9.1.4 and 4.8.1.1.3 of Technical Specifications Appendix A of Facility Operating License No. NPF-15 for San Onofre Nuclear Generating Station Unit 3, this submittal provides the required Diesel Generator Annual Report for a valid failure of a diesel generator. 'Ihis report is in conformance with the requirements of Regulatory Ibsitica C.3.b of Regulatory Guide 1.108.

If you require any additional information, please so advise.

Sincerely, SDQ ^

Enclosure cx:: F. R. Huey (USNRC Senior Resident Inspector, Units 1, 2 and 3)

J. B. Martin (Regional Administrator, USNRC Region V)

Instit11te of Nuclear Power Operaticos (INEO) 8803070140 800229 PDR ADOCK 05000362 R DCD- t g

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DIESIL (ENE!#GVR ANNUAL REEORT SOUIHERN ('ALIFORNIA EDISON CINPANY SAN CHOF1tE 10CIEAR GDERATING STATICH UNIT 3 t DX3ET NO. 50-362 EVENT IKIE: namsunhat- 9, 1987 he following informatim is prtwi$ed in accordance with Technical Specification i Surveillance Requirunent 4.8.1.1.3 and Regulatory Position c.3.b of Regulatory Guide 1.108:

1. %e diesel generator involved was 3G003.

2. mis failure was the first in the last 100 valid tests.

3. %e cause of the failure was a faulty relay which actuates the radiator fan autcmatically upon a start of the dieral.

4. S e faulty relay was replaced, and an analysis will be performed to determine !

the root cause of the failure. If any (*urther corrective actions are warranted as a result of this evaluation, a supplemental report will be subnitted.

5. Se diesel generator was not available for operation frun 2305 on 12/9/87 to 1715 on 12/11/87.

6. Se surveillance test interval remains at 31 days.

7. %e above surveillance test interval is in conformance with the schedule of Regulatory Position C.2.d of Regulatory Guide 1.108. {

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