ML17266A139

LER 79-036/03L-0:on 791203,while Operating at Full Power, Control Room Operator Discovered Mb Linear Power Range Channel High Voltage Was Lower than Other Three Channels. Caused by Failed +15 Volt Power Supply.Supply Replaced

ML17266A139
Person / Time
Site:	Saint Lucie
Issue date:	01/02/1980
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A787	List: ML17207A786 ML17266A139
References
LER-79-036-03L-01, LER-79-36-3L-1, NUDOCS 8002040535
Download: ML17266A139 (2)

Text

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channel hi Qh vol tR I w. 41 = 50V lover than the

~o ~ othe channels. The "MB" lin r ~~~4 - n was declared ino er-able and the "Hi Pover>> IITM Lptt 'ILoss of Lo dtt It PPCF trips vere placed in b ass in accordance with Technical S e The 15V power su 1 was re37laced and the "hlB" channel re f'.3.1.1.

r within the time limit s ecified. Thre~ o erable.

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IRIS LRS I IS CAUSE DESCRIPTION ANO CORRECF IVK ACTIONS Q27 The "HB" linear over ran e hi h voltage failed low due to a failed +15V

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over su 1 Techni Power Model I,"PL 14.5-3.0 . Ho cause could be deter-mined for this failure. Immediate corrective action was to reolace the over su 1 . No further corrective action is reouired.

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