ML18078A591

LER 78-079/03L-0 on 781201:steam Generator 12,level Channel III Found to Be Inoperable;Channel Bistables Tripped Per Tech Specs.Caused by Partially Clogged Sensing Lines

ML18078A591
Person / Time
Site:	Salem
Issue date:	12/28/1978
From:	Kapple A Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18078A589	List: ML18078A588 ML18078A591
References
LER-78-079-03L, LER-78-79-3L, NUDOCS 7901030173
Download: ML18078A591 (1)

Text

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!During normal operation, No. 12 S/G level Channel III was found to be inoperable.

!)))) !Performance Department was notified and the channel bistables were tripped as

!)))) 1required by T/S 3.3.1.1, Action 7. The channel was repaired and returned to service 09

(())] 112-6-78 and the Action Statement was terminated. Two other 12 S/G level channel

[§))] !redundancy was available throughout this occurrence. This is the first occurrence of

!)):I] !this type.

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[I))] I The level sensor failure was caused by partially clogged sensing lines. The sensing lines were blown down, the transmitter was recalibrated and the channel was returned to service. The other S/G level sensing lines were blown down to prevent reoccurrenc9

[JJ]J I of this problem.

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