ML20064H411

/03L-0 on 781114:both Containment Atmosphere Particulate (R-11) & Gaseous (R-12) Radioactivity Monitoring Sys Were Declared Inoperable After Vacuum Pump Tripped & Would Not Restart,Due to Broken Wire in low-flow Relay

ML20064H411
Person / Time
Site:	Farley
Issue date:	12/15/1978
From:	Hairston W ALABAMA POWER CO.
To:
Shared Package
ML20064H409	List: ML20064H407 ML20064H411
References
LER-78-084-03L, LER-78-84-3L, NUDOCS 7812200165
Download: ML20064H411 (1)

Text

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["5T 1 1 At 0700 on 11/14/78 the containment atmosphere particulate radioactivity monitorine I o 3 I system (R-11) and the containment atmosphere gaseous radioactivity monitoring system i f7TT1 1 (R-12) were declared inoperable af ter the vacuum pump tripped and would not restart. I lois( l T/S 3.4.6.1 requires that R-11 and R-12 or a containment air cooler condensate monitor $ng ITTil I system be operable. The T/S 3.4.6.1 action statement requirements were met. R-11 l 1017IIand R-12 were restored to an operable status at 1010 on 11/14/78. The health and I g isj ] safety of the public were not affected. l 80 7 3 9 SYSTEM CAUSE . CAUSE COMP. VALVE CODE CODE SUSCODE COMPONENT CODE SU8 CODE SUSCODE O 9 I si 816 Lsj@ Ls.J@ In it it la IV lx I@ l A l@ L;l;_l @ 13 19 20 7 8 9 10 13 12 13 SEQUENTIAL OCCURPENCE REPORT REVISION g gf po EVENT YEA R REPORT No. CODE TYPE N O.

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41 l vi@ In 43 l@ IP 44 12 l 9 l 7l@ 47 33 34 35 42 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h lilOll Broken wire in low-flow relay caused by vibration in unit. The relay and the vacuum l g jpump/ motor were replaced and the system was satisfactorily tested. Similar occurrenceg

,,,,,gwere reported in LER's 78-045/03L-0 and 78-034/03L-0. A design change will be request 9d

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