05000325/LER-1981-015-03, /03L-0:on 810127,rod Block Monitor B Failed to Initiate RTGB Downscale Alarm & Rod Out Block at Downscale Alarm Setpoint.Caused by Mechanically Stuck Contacts in Control Relay K-2 in Cabinet Circuitry.Relay Replaced

/03L-0:on 810127,rod Block Monitor B Failed to Initiate RTGB Downscale Alarm & Rod Out Block at Downscale Alarm Setpoint.Caused by Mechanically Stuck Contacts in Control Relay K-2 in Cabinet Circuitry.Relay Replaced

ML19341C562
Person / Time
Site:	Brunswick
Issue date:	02/24/1981
From:	Pastva M CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19341C558	List: 05000325/LER-1981-015, Forwards LER 81-015/03L-0 05000325/LER-1981-015-03, /03L-0:on 810127,rod Block Monitor B Failed to Initiate RTGB Downscale Alarm & Rod Out Block at Downscale Alarm Setpoint.Caused by Mechanically Stuck Contacts in Control Relay K-2 in Cabinet Circuitry.Relay Replaced
References
LER-81-015-03L, LER-81-15-3L, NUDOCS 8103030748
Download: ML19341C562 (1)

LER-1981-015, /03L-0:on 810127,rod Block Monitor B Failed to Initiate RTGB Downscale Alarm & Rod Out Block at Downscale Alarm Setpoint.Caused by Mechanically Stuck Contacts in Control Relay K-2 in Cabinet Circuitry.Relay Replaced

Event date:
Report date:
3251981015R03 - NRC Website

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EVENT DESCRIPTION AND PROS A8LE CONSEQUtNCES hcontrol rod withdrawal block l

E l During the performance of Rod Block Monitor (RBM) 0 3 l channel and functional test, PT-1.5T::, RBM "B" failed to initiate an RTGB RBM down-l ITTTl I scale alarm and a rod out block at the downscale alarm seepoint, thereby making the l

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