ENS 55001

v t e ENS Event
05:00 Nov 16, 2020
Title	Gauge Shutter Stuck Open
Event Description	The following was received from the Iowa Bureau of Radiological Health via email: A maintenance technician at the 3M facility in Knoxville, Iowa discovered that a Thermo Fisher Scientific model SULP-77A fixed gauging device containing 661 milliCuries of krypton-85 had a shutter that was stuck open and would not close. This discovery occurred when the production line was shutdown for routine maintenance. The RSO [Radiation Safety Officer] and backup RSO were notified and the gauge was isolated with caution tape to prevent personnel from getting close to the device. 3M maintenance personnel are authorized to perform shutter repair under the supervision of the RSO or backup RSO by Iowa radioactive materials license number 0042-1-63-FG. The licensee will provide a written follow-up report once repairs have been completed and the cause of the failure identified. Iowa Event Number IA200004

ENS 55001 +/-
Where
3M Knoxville, Iowa (NRC Region 3)
License number:	0042163FG
Organization:	Iowa Department Of Public Health
Reporting

Agreement State
Time - Person (Reporting Time:+9.47 h0.395 days <br />0.0564 weeks <br />0.013 months <br />)
Opened:	Randal Dahlin 14:28 Nov 16, 2020
NRC Officer:	Thomas Kendzia
Last Updated:	Nov 16, 2020
55001 - NRC Website
v • d • e

v t e Emergency Notification System
3M with Agreement State
WEEKMONTHYEAR2022-07-07T20:15:00 [Table view]
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