ML20004D579

LER 80-047/03L-0:on 801117,RHR Loop a Suppression Pool Cooling Inboard Throttle Valve Found Inoperable.Caused by Key Failure Between Motor Pinion Gear & Shaft Due to Wrong Key Matl Installed.Motor,Pinion Gear & Key Replaced

ML20004D579
Person / Time
Site:	Cooper
Issue date:	12/16/1980
From:	Doan P NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20004D558	List: ML20004D557 ML20004D579
References
LER-80-047-03L, LER-80-47-3L, NUDOCS 8106090549
Download: ML20004D579 (1)

Text

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EVENT OESCRIPnON AND PROSA8LE CONSEQUENCES h H lWhile in Cold shutdown, RHR-MO-34A, the RHR "A" Loop suppression pool cooling in- 1 y lb:ctd throttle valve would not operate. This is a repetitive occurrence (ref. LER {

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u <r CAUSI Od5CSIPTION AND CORRECTIVE ACTIONS 27 g [Op2rator is Limitorque SMB-4. Event due to key failure between motor pinion gear [

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