ML17266A273

LER 80-045/03L-0:on 800826,during Full Power Operation, Control Element Assembly (CEA) 24 Dropped to Full Insertion. Caused by 15-volt Power Supply Unit Failure.Installation of Redundant Power Supplies in Progress

ML17266A273
Person / Time
Site:	Saint Lucie
Issue date:	09/24/1980
From:	Pace P FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17209A207	List: ML17209A206 ML17266A273
References
LER-80-045-03L, LER-80-45-3L, NUDOCS 8010080673
Download: ML17266A273 (2)

Text

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. During, full power operation CEA&4'dropped to full insertion. Action was taken in accordance with T.S'. 3.3..3.le with reactor ower a 1 / POL>>.

~'as reduced to 70/. The power supply unit for CEA 24 had failed.. The

~ "over supply was replaced and CEA .24 was aligned with its CEA. gx'oup

.".eight. 'ilo= .. occux'rences were reported'.as LERs 335-7'6-37, .78-21, 79-6, 80-.2,, 8".-23.

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CI C7 CC C7 CAUS= DESCRIP i icN ANO CORAECPIV E ACTIONS The cause of the CEA drop was due to a failed 15V ower su u UNX-'30A-SV). The CEA was restored to operable condition within 1 hour arid nOrmal OperatiOn WaS reSumed. 'nS talla .

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op j P.L. Pace (305) 552-3801

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