ML13331B435
| ML13331B435 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/15/1980 |
| From: | Ottoson H SOUTHERN CALIFORNIA EDISON CO. |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| IEB-80-19, NUDOCS 8009160521 | |
| Download: ML13331B435 (1) | |
Text
Southern California Edison Company P.0 BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD.
CALIFORNIA 91770 August 15, 1980 Ff U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V Suite 202, Walnut Creek Plaza 1990 North California Boulevard Walnut Creek, California 94596 Attention: Mr. R. H. Engelken, Director Docket No. 50-206 San Onofre Unit 1
Dear Sir:
IE Bulletin No. 80-19 Failures of Mercury-Wetted Matrix Relays in Reactor Protective Systems of Operating Nuclear Power Plants Designed by Combustion Engineering Reference is made to your correspondence of July 31, 1980, forwarding the subject IE Bulletin. Identified therein were potential deficiencies of mercury-wetted matrix relays used in the logic matrix of the reactor protective system (RPS) of certain nuclear power plants.
Mercury-wetted matrix relays are not used in the reactor protective system of San Onofre Nuclear Generating Station, Unit 1.
Should you have any further questions regarding this matter, please do not hesitate to contact me.
Since H. L. Ottoson Manager of Nuclear Operations cc:
Director, Office of Inspection and Enforcement Division of Reactor Operations Inspection 8009160521