ENS 46940

v t e ENS Event
04:00 Mar 30, 2010
Title	Fixed Process Gauge Shutter Failure
Event Description	The RSO reported a shutter problem on a fixed mounted process gauge manufactured by Ohmart Vega (Model SHF-2) containing a 200mCi CS-137 source. The shutter problem was discovered during a semi-annual shutter test on 3/30/2010 when it was determined that the shutter would not close. The shutter is normally always open to support the manufacturing process and the failure to close did not pose any personnel risk at the time of occurrence. A representative from the gauge manufacturer repaired the shutter onsite and the shutter has functioned acceptably since the repair. The RSO noted that this event occurred over one year ago and he was unaware that it was reportable at the time. The RSO was alerted to the reportability requirements of this incident during his review of NRC Information Notice IN-2011-09.

ENS 46940 +/-
Where
Hemlock Semiconductor Corporation Hemlock, Michigan (NRC Region 3)
License number:	21-32682-01
Organization:	Hemlock Semiconductor Corporation
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+10472.5 h436.354 days <br />62.336 weeks <br />14.345 months <br />)
Opened:	Wallace Millett 12:30 Jun 9, 2011
NRC Officer:	Bill Huffman
Last Updated:	Jun 9, 2011
46940 - NRC Website
v • d • e

v t e Emergency Notification System
Hemlock Semiconductor Corporation with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2016-10-25T11:00:00 [Table view]
[ENS list for Hemlock Semiconductor Corporation]

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