05000302/LER-1981-056-01, /01T-0:on 810815,atmospheric Radiation Monitor RM-45 Was Inoperable.Caused by Failed Sample Vacuum Pump Due to Broken Carbon Vanes

/01T-0:on 810815,atmospheric Radiation Monitor RM-45 Was Inoperable.Caused by Failed Sample Vacuum Pump Due to Broken Carbon Vanes

ML20010H461
Person / Time
Site:	Crystal River
Issue date:	09/16/1981
From:	Hernandez V FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010H451	List: 05000302/LER-1981-056, Forwards LER 81-056/01T-0.Detailed Event Analysis Encl 05000302/LER-1981-056-01, /01T-0:on 810815,atmospheric Radiation Monitor RM-45 Was Inoperable.Caused by Failed Sample Vacuum Pump Due to Broken Carbon Vanes
References
LER-81-056-01T, LER-81-56-1T, NUDOCS 8109240498
Download: ML20010H461 (1)

LER-1981-056, /01T-0:on 810815,atmospheric Radiation Monitor RM-45 Was Inoperable.Caused by Failed Sample Vacuum Pump Due to Broken Carbon Vanes

Event date:
Report date:
3021981056R01 - NRC Website

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8 60 61 DOC AET NUMBER 68 69 EVENT D ATE 74 75 REPORT D ATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h l o l 21 l At 1000, during nor mal operation, it was discovered that atmospheric radiation monitorl [Ol3l l RM-A5 was inoperable. This created an event contrary to T.S. 3.7.7.1.

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10l4l l 9/3/81,it was determined T.S. 3.0.3 was cpplicable to the occurrence.but operation l

lo ls] l did not comply with requirements There was no effect upon the health or safety l

l o l6 ] l of the general public. This was the sixth occurrence for RM-A5_and this is the l

lo J 7l l eighth event reported under this Specification.

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40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l1 l o I l The cause of this event is attributed to failure of the sample vacuum pump.

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[ijil l pump failed due to broken carbc.. vanes in the pump. Grab samples were initiated.

l l The pump was repaired and functionally tested. Lngineering evaluation REI 79-10-9 l

li;7i [ig3j lis investigating pump failures. Modification MAR 80-2-7 will initiate full emergency l [ii4l l recirc upon initiation or a flow alarm for RM-AS.

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