ENS 58081

v t e ENS Event
19:25 Nov 4, 2025
Title	Shutter Failure
Event Description	The following is a summary of information provided by the licensee via phone: On November 4, 2025, at 1425 EST, the licensee radiation safety officer (RSO) was performing a tagout of the facility's kiln, which contains a 150 mCi Co-60 source in a Berthold model LB7444 device. When attempting to close the device shutter, the RSO observed no confirmation of the beam being broken and assumed the shutter was not turning. The shutter is normally open. Access to the kiln was restricted. There were no unexpected exposures. Replacement parts have been ordered, and the device will be serviced in the coming week.

ENS 58081 +/-
Where
Carmuse Lime, Inc. River Rouge, Michigan (NRC Region 3)
License number:	21-32513-01
Organization:	Carmuse Lime, Inc.
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+905.9 h37.746 days <br />5.392 weeks <br />1.241 months <br />)
Opened:	Alex Pogasic 13:19 Dec 12, 2025
NRC Officer:	Sam Colvard
Last Updated:	Dec 12, 2025
58081 - NRC Website
v • d • e

v t e Emergency Notification System
Carmuse Lime, Inc. with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2025-11-04T19:25:00 [Table view]
[ENS list for Carmuse Lime, Inc.]

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