05000259/LER-1979-011-03, /03L-0 on 790628:scram Discharge Level Switch, LS-85-45B,found Failed in Unsafe Direction.Caused by Buildup of Foreign Matl in Pivot Pin Area Which Prevented Movement of Switch Actuator Rod.Swich Was Cleaned

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/03L-0 on 790628:scram Discharge Level Switch, LS-85-45B,found Failed in Unsafe Direction.Caused by Buildup of Foreign Matl in Pivot Pin Area Which Prevented Movement of Switch Actuator Rod.Swich Was Cleaned
ML19242A392
Person / Time
Site: Browns Ferry 
Issue date: 07/27/1979
From:
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19242A389 List:
References
LER-79-011-03L, LER-79-11-3L, NUDOCS 7908010552
Download: ML19242A392 (2)


LER-1979-011, /03L-0 on 790628:scram Discharge Level Switch, LS-85-45B,found Failed in Unsafe Direction.Caused by Buildup of Foreign Matl in Pivot Pin Area Which Prevented Movement of Switch Actuator Rod.Swich Was Cleaned
Event date:
Report date:
2591979011R03 - NRC Website

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REPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h lol2l During normal operation while performine SI 4.1.A-8. scram dischnree 1ew1 M *r b l

[ o 13 l l 1.S-85-45B, was iound f ailed in the unsaf e direction (T. S. table 3.1. A). The inoper-l [o l4 l l able channel was manually tripped in order to allcw centinued operction. The redun- [

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40 41 42 43 44 47 CAUSE bcSCRIPTION AND CORRECTIVE ACTl3NS g i g o l l The r odel SL-305-EI-X was found to have a buildup of foreign caterial in the pivot pin l [3 ;ij area which prevented covement of the switch actuator rod.

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