05000368/LER-1980-022-03, /03L-0:on 800424,immediately Following Plant Trip, Emergency Feedwater Pump Turbine 2K3 for Pump 2P7A Tripped on Overspeed.Caused by Low Steam Generator Level.Root Cause Is Being Investigated.Water Drained from Turbine Casin

/03L-0:on 800424,immediately Following Plant Trip, Emergency Feedwater Pump Turbine 2K3 for Pump 2P7A Tripped on Overspeed.Caused by Low Steam Generator Level.Root Cause Is Being Investigated.Water Drained from Turbine Casing

ML19316A754
Person / Time
Site:	Arkansas Nuclear
Issue date:	05/20/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19316A753	List: 05000368/LER-1980-022, Forwards LER 80-022/03L-0
References
LER-80-022-03L, LER-80-22-3L, NUDOCS 8005270459
Download: ML19316A754 (1)

LER-1980-022, /03L-0:on 800424,immediately Following Plant Trip, Emergency Feedwater Pump Turbine 2K3 for Pump 2P7A Tripped on Overspeed.Caused by Low Steam Generator Level.Root Cause Is Being Investigated.Water Drained from Turbine Casing

Event date:
Report date:
3681980022R03 - NRC Website

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HF,oHYDait 80 EVENT OESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l Inunediately following a plant trip, the Emergency Feedwater Pump turbine i fBTr1 i (2K3) for pump 2P7A tripped on overspeed upon receipt of ESFAS due to lowi I steam generator level.

The electric driven EFW pump, 2P7B, and associated o.

iois,i valves were operable and supplied sufficient flow for the transient i

o. i response.

The overspeed trip was reset and the pump was successfully i

istarted three times then declared operable. This occurrence is similar i

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i o n i i to 50-368/79-055,79-072, 79-031 & 79-104.

Reportable per T.S. 6.9.1.96.i

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CAUSE OESCR.PTION AND CORRECflVE ACTIONS h li io t 1 The root cause of the occurrence is beina investicated.

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w I corrective action has been to manually start the EFW pump once every

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Successful starts have been completed with the exception of i

m Ion 4/26/80 and 4/27/80. Water was drained from the turbine casing and i

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