ML17266A062

LER 79-010/03L-0 on 790311:during Power Operation,Control Element Assembly 62 Slipped Twice.Caused by Faulty 15 Volt Power Supply.Supply Replaced

ML17266A062
Person / Time
Site:	Saint Lucie
Issue date:	04/11/1979
From:	James D FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17206A736	List: ML17206A734 ML17266A062
References
LER-79-010-03L, LER-79-10-3L, NUDOCS 7904230317
Download: ML17266A062 (2)

Text

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>>9 ai sa t 60 dl COCKET NUMSCA drt 69 EV EN T 0*TC tc I5 Ac)CAT OA 9 5 30 PVCNT DESCRIPTION AND PROaaaLP CQNSCCUSiVCSS lo COOZI Durin ower o eration 3/ll/79 CEA 62 sli ed twice 14 and 12 inches ACTION er TS 3.1.3.1 was taken. No a arent cause was found. On 3-14-79 CEA 62 a ain sli ed twice 16 and ll inches . A ro riate ACTION was ke . The CAUSE noted below was found and corrected. No more sli s occurred in the. 2 weeks of o eration before shutdown for refueling.

This is the second occurrence of slipped CEA's (LER 335-78-43).

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~99 "S o The 15V. ower su ol was determined to be at fault and was re laced. The timin module was also re laced as a recaution. It is robable that this corn onent was also the caus f h sli or i 335- -43. It is intended to re lace those ower su Ties with a modified model as s are parts and plant conditions-permit.

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