05000325/LER-1978-069-03, Ler 78-069/03L-1 on 780716:outboard Main Steamline Drain Isolation Valve B21-F019 Would Not Operate.Caused by Motor Brushes Not Making Proper Contact W/Commutator

Ler 78-069/03L-1 on 780716:outboard Main Steamline Drain Isolation Valve B21-F019 Would Not Operate.Caused by Motor Brushes Not Making Proper Contact W/Commutator

ML19269C748
Person / Time
Site:	Brunswick
Issue date:	02/05/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19269C745	List: 05000325/LER-1978-069, Forwards LER 78-069/03L-1 05000325/LER-1978-069-03, Ler 78-069/03L-1 on 780716:outboard Main Steamline Drain Isolation Valve B21-F019 Would Not Operate.Caused by Motor Brushes Not Making Proper Contact W/Commutator
References
LER-78-069-03L, LER-78-69-3L, NUDOCS 7902120145
Download: ML19269C748 (2)

LER-1978-069, Ler 78-069/03L-1 on 780716:outboard Main Steamline Drain Isolation Valve B21-F019 Would Not Operate.Caused by Motor Brushes Not Making Proper Contact W/Commutator

Event date:
Report date:
3251978069R03 - NRC Website

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69 EVENT DATE le 75 REPORT DATE 80 EVENT DESCillPTION AND PROB ABLE CONSEQUENCES h 1 o l 21 l Durine the performance of Periodic Test 25.0. outbcard main steamline drain isolationi o

a i valve B21-F019 would not operate.

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44 47 33 34 35 31 40 41 42 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 11 l o l l The main t teamline drain line was isolated by closing and deactivating the inbcard l

11 11l l drain line valve (B21-F016).

Valve B21-F019 is located inside the FB1V pit which I

i 7 l is not accessible during power operations.

During the next reacter shutdown, the l

i 3 l valve operator motor was found inoperable duc 'to the motor brushes not making proper i 4 l contact with the commutator. A f aulty brush holder caused the brushes not to make l

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