ML17266A094

LER 79-026/03L-0:on 790801,minus 18 Volt Power Supply Found at Minus 13 Volts.Cause Unknown;Probably Normal end-of-life Failure of Electronic Component.New Power Supply Installed. No Addl Action Required

ML17266A094
Person / Time
Site:	Saint Lucie
Issue date:	08/31/1979
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A380	List: ML17207A379 ML17266A094
References
LER-79-026-03L, LER-79-26-3L, NUDOCS 7909190389
Download: ML17266A094 (1)

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NRC FORM 388 U. S. NUCLEAR RGCVLATORY COMMISSION P TTI LICEirISEE EYENT REPORT CONTROI. BLOCXI ) ) ) IQI (PLEASE PRLNTOR TYPh ALL REOUIRED INFORs,IATION)

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~03 rocedure 1400050 the minus 1 8 vol t ower su 1 PS-1 in Channel A RPS Cszt" CPC-2 core rotection calculato~rwas found to be at a roximat~el medius l IOO I I . 0 I I 0 I 5 I I I I I 3. ~i:1

~QB initiated and the ower su 1 was re laced. The CPC channel was re-

~or stored to o erable status within the time limit specified. No adverse

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CAUSS OGSCRIPTION ANO CORRSCfiVE ACTIONS Q22 0 LThe ss ecific root cause of the ower su I failure is not known It is mose likel that a normal end of life fai lure of an electronic corn onent was the cause. A new ower sup 1 was installed. No additional action is reouired. This itas the second occurrence of a failed power supp~ly in the CPC. refer to LER 335-79-25 .

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