ML13324A739
| ML13324A739 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 10/16/1985 |
| From: | Morgan H Southern California Edison Co |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| NUDOCS 8510290133 | |
| Download: ML13324A739 (2) | |
Text
- g Southern California Edison Company SAN ONOFRE NUCLEAR GENERATING STATION P. 0.
BOX 128 SAN CLEMENTE, CALIFORNIA 92672 H.E.MORGAN TELEPHONE STATION MANAGER (714) 368-6241 October 16, 1985 U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596-5368 Attention:
Mr. J. B. Martin, Regional Administrator
Dear Sir:
Subject:
Docket No. 50-206 Special Report San Onofre Nuclear Generating Station Unit 1 In accordance with Technical Specification Section 6.9.3 and Table 3.5.10-1, Action Statement 27, of Provisional Operating License No. DPR-13 for San Onofre Nuclear Generating Station Unit 1, this letter provides the required Special Report for the Plant Vent Stack Wide Range Gas Monitor R-1254 being out of service greater than seven days.
On October 2, 1985, at 0740, with Unit 1 at 93% power, monitor R-1254 was removed from service to perform the routine quarterly surveillance, and a preplanned alternate method of monitoring was initiated as required. On October 7, 1985, the monitor failed during the surveillance test. The failure was intermittent, requiring extensive trouble-shooting, which delayed the return to service of the monitor until October 10, 1985, at 1705.
The monitor was repaired by resoldering connections on a printed circuit card. This is considered an isolated occurrence, and no additional corrective action is planned. Since additional plant vent stack monitors were availablW during the period R-1254 was unavailable, there was no safety significance te' this event. The health and safety of plant personnel or the public was notR affected.
8510290133 851016 PDR ADOCK 05000206 S
Mr. J. B. Martin
-2 Please contact us if we can be of further assistance.
Sincerely, Enclosure cc:
F. R. Huey (USNRC Senior Resident Inspector Units 1, 2 and 3)
U. S. Nuclear Regulatory Commission Document Control Desk Institute of Nuclear Power Operations (INPO)