05000272/LER-1980-012-03, /03L-0:on 800205,air Particulate Detector Was Declared Inoperable When Shear Pins & Microswitch Failed. Caused by Normal Degradation of Pins & Probable Bump of Switch by Personnel.Pins Replaced & Switch Repaired

/03L-0:on 800205,air Particulate Detector Was Declared Inoperable When Shear Pins & Microswitch Failed. Caused by Normal Degradation of Pins & Probable Bump of Switch by Personnel.Pins Replaced & Switch Repaired

ML18081B157
Person / Time
Site:	Salem
Issue date:	03/03/1980
From:	Murphy M Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18081B156	List: 05000272/LER-1980-012, Forwards LER 80-012/03L-0 05000272/LER-1980-012-03, /03L-0:on 800205,air Particulate Detector Was Declared Inoperable When Shear Pins & Microswitch Failed. Caused by Normal Degradation of Pins & Probable Bump of Switch by Personnel.Pins Replaced & Switch Repaired
References
LER-80-012-03L, LER-80-12-3L, NUDOCS 8003060572
Download: ML18081B157 (1)

LER-1980-012, /03L-0:on 800205,air Particulate Detector Was Declared Inoperable When Shear Pins & Microswitch Failed. Caused by Normal Degradation of Pins & Probable Bump of Switch by Personnel.Pins Replaced & Switch Repaired

Event date:
Report date:
2721980012R03 - NRC Website

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[Q]1J I At-1037 hours, a filter failure alarm was received for the Air Particulate Detector (APD) and the APD was declared inoperable (T.S. 3.4.6.1).

An investigation showed the shear pins and a micro switch had failed.

The shear pins were replaced at once and the micro switch jumpered until the following day because of the unavailability of parts.

(77-68, 78-12, 78-54).

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43 1c 44 The cause was the failure of the shear pins as a normal degradation of the pins and IJTIJ DTIJ OE the micro switch failed probably by being bumped when personnel were in close proximity.

The pins were replaced, and the micro switch repaired.

The Action Statement was terminated at 200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> on February 5, 1980.

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