ENS Event | |
|---|---|
15:04 Jun 11, 2025 | |
| Title | |
| Event Description | The following is a summary of information provided by the licensee via phone and email:
On June 11, 2025, at 1104 EDT, the licensee discovered a stuck open shutter while performing daily checks on an x-ray gauge. The gauge is in an area that is taped off and poses no exposure risk to personnel or the public. The manufacturer is planning an on-site inspection and assessment of the gauge. Gauge Model Number: Thermo Rm200EM Gauge Serial Number: 543893 Source Activity: 1000 mCi (Americium-241) Source Model Number: AM1.GXX Source Serial Number: G44/004/09
The following is a summary of information received from the licensee via phone and email: The manufacturer (Thermo EGS Gauging) was on-site and inspected the unit. They identified that the magnetic coil position holding the shutter flag when it de-energized needed to be adjusted. Adjustments to its position were made, and the shutter is now working as designed. Notified R3DO (Ziolkowski) and NMSS Events Notifications via email. |
| Where | |
|---|---|
| Cleveland Cliffs Dearborn, Michigan (NRC Region 3) | |
| License number: | 21-26151-01 |
| Organization: | Cleveland Cliffs |
| Reporting | |
| 10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure | |
| Time - Person (Reporting Time:+-0.73 h-0.0304 days <br />-0.00435 weeks <br />-9.99954e-4 months <br />) | |
| Opened: | Wayne Langdon 14:20 Jun 11, 2025 |
| NRC Officer: | Kerby Scales |
| Last Updated: | Jun 12, 2025 |
| 57756 - NRC Website | |
Cleveland Cliffs with 10 CFR 30.50(b)(2) | |
WEEKMONTHYEARENS 577562025-06-11T15:04:00011 June 2025 15:04:00
[Table view]10 CFR 30.50(b)(2) Stuck Open Shutter 2025-06-11T15:04:00 | |