05000368/LER-1950-368, /03L-0 on 790514:during Mode 3,supply Valves to Steam Generator Would Not Respond to Control Room Demand Signal.Caused by Blown Fuse & Stuck Relay.Similar to LER 50-368/79-026.Repairs Made & Valves Proven Operable

/03L-0 on 790514:during Mode 3,supply Valves to Steam Generator Would Not Respond to Control Room Demand Signal.Caused by Blown Fuse & Stuck Relay.Similar to LER 50-368/79-026.Repairs Made & Valves Proven Operable

ML19273B960
Person / Time
Site:
Issue date:	06/12/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19273B940	List: 05000368/LER-1979-035-03, /03L-0 on 790514:during Mode 3,emergency Feedwater Flow Control Valve Failed to Open or Respond to Demand Signal.Similar to LERs 50-368/78-028 & 50-368/78-009. Caused by Pressure Switch Malfunction.Switch Repaired 05000368/LER-1979-036-03, /03L-0 on 790514:during Mode 3,emergency Feedwater Supply Valve Did Not Meet Required Limiting Value of Stroke Time.Caused by Tripper Bar Pickup Out of Adjustment & Low Oil Level.Repairs Made ML19273B939
References
LER-79-037-03L, LER-79-37-3L, NUDOCS 7906180587
Download: ML19273B960 (1)

LER-1950-368, /03L-0 on 790514:during Mode 3,supply Valves to Steam Generator Would Not Respond to Control Room Demand Signal.Caused by Blown Fuse & Stuck Relay.Similar to LER 50-368/79-026.Repairs Made & Valves Proven Operable

Event date:
Report date:
3681950368R00 - NRC Website

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.N RC FORM 366 O 771 U. S. NUCLE AR REGULATORY COMMISSION LICENSEE EVENT REPORT EXHIBIT A CONTROL etOcic [

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Steam Generator, 2E24B, would not respond to a Control c

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