ML20079A574
| ML20079A574 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 02/23/1995 |
| From: | Marsh W SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9503010263 | |
| Download: ML20079A574 (1) | |
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Southem Califomia Edison Company 23 PARKER STREET IRVINE, CALIFORNI A 92718 WALTER C. MARSH TELEPHONE MOP'.AGEM OF NUCLF" 8tEGULATORY AFF AfRS (714) 454-4403 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C.
20555
Subject:
Docket Nos. 50-361 and 50-362 Special Report - Inoperable Meteorological Instrumentation San Onofre Nuclear Generating Station, Units 2 and 3 In accordance with Technical Specification 3.3.3.4 (a) of Facility Operating Licenses NPF-10 and NPF-15 for San Onofre Units 2 and 3, respectively, Edison is submitting this letter to report one or more channels of the meteorological monitoring instrumentation being inoperable for more than 7 days.
-On February'7,' 1995, the' two delta temperature instrument readings began'to deviate from each other and were declared inoperable.
This failure was caused by ele'ctrical~ current i
leakage in outdoor signal. wire connectors due to continued California. winter storms.
All other meteorological instrumentation remained operable.
Edison replaced the defective connectors upon the return of fair 4
weather, and restored the delta temperature instruments to service on February 21, 1995.
If you require any additional information, please let me know.
i Sincerely, ah e.
9503010263 950223 PDR ADOCK 05000361 S
PDR-cc:
L.'J.
Callan, Regional Administrator, NRC Region IV A'.
B. Beach, Director, Division of Reactor Projects, NRC Region IV K. E. Perkins, Jr.,
Director, Walnut Creek Field Office, NRC Region IV M. B.
Fields, NRC Project Manager, Units 2 and 3 J. A. Sloan, Senior NRC Resident Inspector, San Onofre Units 2& 3-f"f?PD 010043 t