05000324/LER-1979-105-03, /03L-0:on 791201,while Replacing Indicating Light Bulb During Rod Block Monitor Rod Block Test,Bulb Broke & Rod Block Monitor B Tripped.Caused by Base of Broken Bulb Coming in Contact W/Ground.Bulb Replaced

/03L-0:on 791201,while Replacing Indicating Light Bulb During Rod Block Monitor Rod Block Test,Bulb Broke & Rod Block Monitor B Tripped.Caused by Base of Broken Bulb Coming in Contact W/Ground.Bulb Replaced

ML19256G159
Person / Time
Site:	Brunswick
Issue date:	12/14/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19256G151	List: 05000324/LER-1979-105, Forwards LER 79-105/03L-0 05000324/LER-1979-105-03, /03L-0:on 791201,while Replacing Indicating Light Bulb During Rod Block Monitor Rod Block Test,Bulb Broke & Rod Block Monitor B Tripped.Caused by Base of Broken Bulb Coming in Contact W/Ground.Bulb Replaced
References
LER-79-105-03L, LER-79-105-3L, NUDOCS 7912270536
Download: ML19256G159 (1)

LER-1979-105, /03L-0:on 791201,while Replacing Indicating Light Bulb During Rod Block Monitor Rod Block Test,Bulb Broke & Rod Block Monitor B Tripped.Caused by Base of Broken Bulb Coming in Contact W/Ground.Bulb Replaced

Event date:
Report date:
3241979105R03 - NRC Website

text

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LICENSEE EVENT REPORT CONTROLBLOCK: l l

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60 61 DOLKET NUYSER Gd 69 EVENT DATE

,4 75 REPORT O ATE SQ EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l While performing PT 1.5.1, RBM Rod Block Test, the operator noticed an indicating I

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light that was not lit as required.

While attempting *o replace the indicating o,, [ bulb, it broke and RBM "B" tripped.

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8 9 SYSTEM

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10 11 12 13 16 rd 20 SEOVENTIAL QCCURRENCE R8 PORT REVISION

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44 47 CAUSE DESCRIPTION AND CORRE0TtvE ACTIONS

] The base of the broken bulb came in contact with ground and tripped the RBM "B" 20 l

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l. volt power siipply breaker. The bulb was replaced, the power supoly was checked for i

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2 l problems (none were found), and the breaker was reset and closed. This is considered i 3 l an isolated event.

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NAME OF PREPARER