ENS 57277

v t e ENS Event
04:00 Aug 19, 2024
Title	Gauge Shutters Found Open Without Command
Event Description	The following information was provided by the Tennessee Division of Radiological Health via email: It was discovered on August 19, 2024, that three (3) fixed gauges had shutters that were open without commands to open from the PLC terminal. The area was unoccupied at the time. The facility radiation safety officer (RSO) did not indicate any physical damage to the devices. The event occurred again on the morning of August 20, 2024. No exposure was noted since the gauges were operating in a normal capacity. The RSO had the shutters closed and took the gauges out of service. The gauges were also locked out to prevent reoccurrence. The gauge manufacturer has been contacted for troubleshooting the occurrence. The available device information is as follows: Manufacturer: Mahlo America, Inc. Model: 11-200933 (source holder) Isotope: Kr-85, 260 mCi (as of March 28, 2019) Source SN#: AN-3035, AN-3036, AN-3037 Corrective actions will be updated with a report within 30 days. Tennessee Event Report Number: TN-24-060

ENS 57277 +/-
Where
3M Corporation Clinton, Tennessee (NRC Region 1)
License number:	R-M5003-G29
Organization:	Tennessee Div Of Rad Health
Reporting

Agreement State
Time - Person (Reporting Time:+38.08 h1.587 days <br />0.227 weeks <br />0.0522 months <br />)
Opened:	Andrew Holcomb 18:05 Aug 20, 2024
NRC Officer:	Josue Ramirez
Last Updated:	Aug 20, 2024
57277 - NRC Website
v • d • e

v t e Emergency Notification System
3M Corporation with Agreement State
WEEKMONTHYEAR2024-08-19T04:00:00 [Table view]
[ENS list for 3M Corporation]

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