ML20138N558

Forwards LERs 84-002-02,84-023-01 & 85-019-01

Date released: 05/31/2020	Download: ML20138N558

:on 840130,containment Purge Isolation Sys Spuriously Actuated Because of Electrical Noise Spike on Containment Airborne Monitor.Insp of Detector for Proper Grounding Planned

ML20138N589
Person / Time
Site:	San Onofre
Issue date:	11/01/1985
From:	Morgan H SOUTHERN CALIFORNIA EDISON CO.
To:
References
Download: ML20138N589 (2)

:on 840524,spurious Actuation of Control Room Isolation Sys Occurred Because of Noise Spike on Control Room Airborne Radiation Monitor.Monitor Detector Replaced & Preamplifier Properly Grounded

ML20138N579
Person / Time
Site:	San Onofre
Issue date:	11/01/1985
From:	Morgan H SOUTHERN CALIFORNIA EDISON CO.
To:
References
Download: ML20138N579 (1)

:on 850517,fuel Handling Isolation Sys Actuated by Spurious Airborne Monitor Alarm.Probably Caused by Radiation Monitor Detector Sensitivity.Spurious Actuations Also Occurred on 850519,26 & 0607

ML20138N568
Person / Time
Site:	San Onofre
Issue date:	11/01/1985
From:	Morgan H SOUTHERN CALIFORNIA EDISON CO.
To:
References
Download: ML20138N568 (1)

Forwards LERs 84-002-02,84-023-01 & 85-019-01

ML20138N556
Person / Time
Site:	San Onofre
Issue date:	11/01/1985
From:	Morgan H SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF ADMINISTRATION (ADM)
References
Download: ML20138N556 (2)