ENS 47324

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v t e ENS Event
05:00 Oct 4, 2011
Title	Agreement State Report - Stuck Open Shutter on Process Gauge
Event Description	The following report was received from the Kansas Department of Health and Environment via facsimile: The licensee attempted to close the shutter [on a process gauge] in preparation for a job. The shutter would not close. There were no personnel exposures [associated with this event]. Because of the location [of the gauge], there are no likely exposures due to this failure. The source is located approximately 12 feet above the ground on a tank. Access is by portable ladder. Operations and maintenance personnel were notified. The shutter in question is on an Ohmart/VEGA model SHF1 B-45 source holder (S/N 7294CN) containing 100 milli-Curies of Cs-137 in a sealed source. The manufacturer, [Ohmart] VEGA, has been contacted and is working to schedule their service technician to [make repairs]. Sealed Source and Device Registry OH-0522-D-01 02-B states 'Commonly reported device failures associated with this device series includes stuck shutters, shutter handles breaking off, and broken screws. A review of these failures indicate common root cause issues are associated with: operating the devices outside the normal conditions of use; failure to seek appropriate device service when shutters start becoming difficult to operate; shutter binding due to environmental contaminant intrusion into the shutter; and, forcing operation of shutter instead of seeking corrective action. The most commonly involved series is the SH-F2 which is the model typically installed in harsh environmental conditions'. Kansas Report Number: KS110011

ENS 47324 +/-
Where
Frontier El Dorado Refining Company El Dorado, Kansas (NRC Region 4)
License number:	22-B145-01
Organization:	Kansas Dept Of Health & Environment
Reporting

Agreement State
Time - Person (Reporting Time:+55.08 h2.295 days <br />0.328 weeks <br />0.0754 months <br />)
Opened:	James Harris 12:05 Oct 6, 2011
NRC Officer:	Bill Huffman
Last Updated:	Oct 6, 2011
47324 - NRC Website
v • d • e

v t e Emergency Notification System
Frontier El Dorado Refining Company with Agreement State
WEEKMONTHYEAR2011-10-04T05:00:00 [Table view]
[ENS list for Frontier El Dorado Refining Company]

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ENS Notification