ML17266A142

LER 80-002/03L-0:on 800104,during Normal Operations,Control Element Assembly Dropped to Full Insertion,Causing Tq to Exceed Core Limits.Caused by Failure of 15-volt Power Supply in Coil Power Programmer.Power Supply Replaced

ML17266A142
Person / Time
Site:	Saint Lucie
Issue date:	02/01/1980
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A833	List: ML17207A832 ML17266A142
References
LER-80-002-03L, LER-80-2-3L, NUDOCS 8002210386
Download: ML17266A142 (1)

Text

0 NRC FORM 144 U. S. NUCLEAR RECULATORY COMMISS'ION I7 77 I o>> o~ll LICENSEE EVENT REPORT

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Qi (Pl EASE PRINT OR TYPE AI.L RECUIRED INFORMATIONI

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EVENT OESCRIPTIQN ANO FRCBABI.E CONSKCUENCES Qlo

~0 ro ed to full insertion. Action in

~03 accordance with T. S. 3 ~ 1 ~ 3. 1. e was initiated and REACTOR POWER was REDUCED CEA 22 was restored to it's normal position within 1 hour. Tq was found to be .044 and action on TS 3.2.4.a was initiated.. T was determined to be within limits in less than 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />. No other core limits were'exceeded.

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~0 1 The reactor was return'ed to 100% power. Similar occurrences were reported

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~re ER 44 MANUFACTUAEA 47 CAUSE OESCRIPTION ANO CORRECTIVE ACTIONS 22 d ed due to a failed 15V ower su 1 ( ower rate mod SU-UNI-30A-BV) in the coil power programmer. No cause for this failure could be determined. Immediate corrective action was to replace the power supply.

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4 9 SO M. A. Scho man . PHONE:

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