ENS 53275

v t e ENS Event
08:00 Mar 21, 2018
Title	Gauge Shutter Malfunction
Event Description	On March 21, 2018, at approximately 0300 CDT the shutter on an industrial beta transmission gauge malfunctioned and did not immediately close when commanded to do so. Facility maintenance personnel were able to get the shutter to fully close. The gauge was taken out of service. At approximately 0800 CDT the facility maintenance technician with the most experience working with radiation gauges inspected the device and found that the shutter opened properly, but would not fully close. The licensed service provider under contract to the facility was contacted and provided advice to the facility technician so that the shutter could be fully closed. The facility Radiation Safety Officer verified that the shutter was fully closed using a portable radiation survey meter. Electrical power to the device was locked out to prevent use. The gauge manufacturer was contacted to provide advice and to provide a replacement shutter assembly to be installed by the licensed service provider that the facility uses for more extensive maintenance on radiation gauges. Isotope, quantity, chemical and physical form: Kr-85, 1000 millicuries on January 8, 2007, encapsulated sealed source, serial number 05-709, QSA Global model KAC.D1, in LFE model SULP-77A beta thickness gauge, serial number 9281 The event resulted in no radiation exposure to any individual.

ENS 53275 +/-
Where
3M Corporate Springfield, Missouri (NRC Region 3)
License number:	22-00057-03
Organization:	3M Corporate
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+9.07 h0.378 days <br />0.054 weeks <br />0.0124 months <br />)
Opened:	Michael Lewandowski 17:04 Mar 21, 2018
NRC Officer:	Andrew Waugh
Last Updated:	Mar 21, 2018
53275 - NRC Website
v • d • e

v t e Emergency Notification System
3M Corporate with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2018-03-21T08:00:00 [Table view]
[ENS list for 3M Corporate]

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