ML13308B530
| ML13308B530 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 04/19/1976 |
| From: | Fogarty D SOUTHERN CALIFORNIA EDISON CO. |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| IEB-76-02, IEB-76-03, IEB-76-2, NUDOCS 8103110149 | |
| Download: ML13308B530 (3) | |
Text
April 19, 1976Z.
U. S. Nuclear Regulatory Commission Recion V Office of Inspection and Enforcement Suite 202, Walnut Creek Plaza 1990 North California Boulevard Walnut Creek, CA 94596 Docket No.
50-206 Attention:
R. H. Engelken Director
Dear Mr. Engelken:
IE Bulletin Nos.
76-02/76-03 General Electric Relay Failures Reference is made to your correspondence of March 17, 1976 concerning IE Bulletin No. 76-02, General Electric Relay Coil Failure and Relay Malfunctions.
A review of plant electrical circuits confirms the subject relays are not utilized in our reactor control or reactor protection systems.
Approximately 76 HFA type relays, however, are utilized in other electrical schemes.
Due to difficulties experienced with this relay coil at other Edison generating stations, an order was placed with General Electric for replacement coils.
These coils were subsequently received in January, 1976.
It is our intention to replace as many HFA relay coils as practical during a plant outage scheduled for April, 1976.
The remaining coils will be replaced during our refueling outage scheduled for August, 1976.
In reference to IE Bulletin No. 76-03, General Electric Type STD Relays, we have reviewed the plant electrical schemes, including reactor control and protection functions and find that the subject relays are not utilized in any circuits at this facility.
Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE DAVID J. FOGARTY ROSEMEAD, CALIFORNIA 91770 TELEPHONE v..t...
n 213 -572-2796 April 19, 1976 U. S. Nuclear Regulatory Commission Region V Office of.Inspection and'Enforcement Suite 202, Walnut Creek Plaza 1990 North California Boulevard Walnut Creek, CA 94596 Docket No. 50-206 Attention:
R. H. Engelken Director Dear Mr.
Engelken:
IE Bulletin Nos. 76-02/76-03 General Electric Relay Failures Reference is made to your correspondence of March 17, 1976 concerning IE Bulletin No. 76-02, General Electric Relay Coil Failure and Relay Malfunctions. A review of plant electrical.
circuits confirms the subject relays are not utilized in our reactor control or reactor protection systems.
Approximately 76 HFA type relays, however, are utilized in other electrical schemes. Due to difficulties experienced with this relay coil at other Edison generating stations, an order was placed with General Electric for replacement coils.
These coils were subsequently received in January, 1976.
It is our intention to replace as many HFA relay coils as practical during a plant outage scheduled for April, 1976.
The remaining coils will be replaced during our refueling outage scheduled for August, 1976.
In reference to IE Bulletin No. 76-03, General Electric Type STD Relays, we have reviewed the plant electrical schemes, including reactor control and protection functions and find that the subject relays are not utilized in any circuits at this facility.
E Response covering Dockets Nos. 50-361 and 50-362 will be provided under separate cover.
Sincerely, cc:
U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Division of Reactor Inspection Programs Washington, D.C.
20555