ML19274D218

LER 78-051/03L-0 on 781212:during Normal Operation,The Containment Atmosphere Sampling Pump Tripped,Rendering Both Particulate & Gaseous Radioactivity Monitors Inoperable. Caused by Failed Pump Bearing

ML19274D218
Person / Time
Site:	Calvert Cliffs
Issue date:	01/11/1979
From:	Carroll J, Miernicki M BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19274D217	List: ML19274D216 ML19274D218
References
LER-78-051-03L-01, LER-78-51-3L-1, NUDOCS 7901160287
Download: ML19274D218 (1)

Text

NRC F 0451366 U. S. NUCLEAR REGULA10HY COMMISSION LICENSEE EVENT REPORT CoranOL otoco ] l l l l l@ (PLEASE PRINT OR TYPE ALL REOUIRED INFORMATION)

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EVENT DFSCRIPTION AND PROBABLE CONSEQUENCES h

[c ;:1 l Durina nomal operation the containment atmosphere samnling pump tripped i O 3 ] at 0100 renderino both the particulate and gaseous radioactivity monitors O 4 l inoperable. The standby pump was started at 0230 terminating the event. J o s I The containment sump level alam system remained operable throughout. LER l 0 6 l 78-49 (U-1) describes a similar event. I O 7 l l 0 H l  !

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& l110 l l Bearino on cump had failed causino oumn to seize. It annears that granhite I f i i I particles from pump vanes wera deoosited in the bearing causing the coivrira-1 I. , , l This is a nomal end of life failure. No further corrective action is t

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, 3 ; necessary. (Conde Pump Model #6) 1 4 l 7 8 9 80 S  % POWER OTHER STATUS OIS O RY DISCOVERY OESCRIPTION

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NAME OF PREPARER

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