05000368/LER-1980-022-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Upon Receipt of Low Steam Generator Level Signal.Caused by Design Deficiency.Governor Valve Control Modified

Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Upon Receipt of Low Steam Generator Level Signal.Caused by Design Deficiency.Governor Valve Control Modified

ML19350E487
Person / Time
Site:	Arkansas Nuclear
Issue date:	06/19/1981
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19350E481	List: 05000368/LER-1979-104-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Upon Receipt of Low Steam Generator Level Signal.Caused by Design Deficiency.Governor Valve Control Modified 05000368/LER-1980-022-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Upon Receipt of Low Steam Generator Level Signal.Caused by Design Deficiency.Governor Valve Control Modified 05000368/LER-1980-030-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Following Manual Start.Caused by Design Deficiency.Governor Valve Control Modified 05000368/LER-1980-036-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Following Manual Start.Caused by Design Deficiency.Governor Valve Control Modified 05000368/LER-1980-050-03, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Following Manual Start.Caused by Design Deficiency.Governor Valve Control Modified 2CAN068113, Forwards Updated LERs 79-104/03X-1,80-022/03X-2, 80-030/03X-1,80-036/03X-1 & 80-050/03X-4
References
LER-80-022-03X, LER-80-22-3X, NUDOCS 8106230160
Download: ML19350E487 (1)

LER-1980-022, Steam Driven Emergency Feedwater pump,2P7A,turbine driver,2K3,tripped on Overspeed Upon Receipt of Low Steam Generator Level Signal.Caused by Design Deficiency.Governor Valve Control Modified

Event date:
Report date:
3681980022R03 - NRC Website

text

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i REVISEDREPORT-PREVIOUSREPORTDATE6f2/80 9

seRC FOnM M4 U.S.'fUCLE AR RECULATORY COMMIS$60N 1.lCENSEE EVENT REPORT EXHIBIT A

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(PLE ASE PRINT OR TYPE ALL REQUIRED.NFORMAf tONI CONTROL 8tOCutl l l l l l g1 11 l

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,oa,o.1, EVENT DE$CR6, VION AND PR0e A8LE CONSEQUE4CES h rim Ilmmediately following a plant trip, the Emergency Feedwater (EFW) Pump, I

f5Trl IPP7A. turbine drivor. 2K3. tripped nn nyerennnd nnnn enenint nf Fra ano 1 g o i.i lto low Steam Generator level.

The Electric Driven EFW PumD. 2P7B. and as-l filT) Isociated valves wre onorablo A connlind (officinnt fi ni., fnr the transientl o.

iresponse.

The overspeed trip was reset & the pump was successfully started s o lii 1 3 times, then declared operable.

Occorronen einilar te tgpe t 50-368/78-1 I o le 1 I 032.79-05E.__7S-072. 74 nR1. 74 1{L4 pennrtable ner T_S 6.9_1.9.b 1

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A testina orogram verified EFW turbine I g [ reliability. Refer to LER 50-368/80-050/03X-4 for further informatinn 1

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