ENS Event | |
|---|---|
15:48 Aug 28, 2025 | |
| Title | |
| Event Description | The following is a summary of information provided by the licensee via phone:
On August 28, 2025, an authorized user notified the radiation safety officer that the shutter of a fixed Ohmart/Vega SHF1A source holder with a 50 mCi Cs-137 source could not be closed while preparing for a routine inspection of a process vessel. The entrance to the process vessel was barricaded. A do-not-operate tag was placed on the source holder shutter handle. Communication of the event to facility personnel is in progress. The manufacturer stated that the model of source holder is no longer in production and must be replaced. There were no overexposures due to this event. |
| Where | |
|---|---|
| Weyerhaeuser Columbia Falls, Montana (NRC Region 4) | |
| License number: | 25-15644-01 |
| Organization: | Weyerhaeuser |
| Reporting | |
| 10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure | |
| Time - Person (Reporting Time:+1.87 h0.0779 days <br />0.0111 weeks <br />0.00256 months <br />) | |
| Opened: | Hunter Kent 17:40 Aug 28, 2025 |
| NRC Officer: | Sam Colvard |
| Last Updated: | Aug 28, 2025 |
| 57889 - NRC Website | |
Weyerhaeuser with 10 CFR 30.50(b)(2) | |
WEEKMONTHYEARENS 578892025-08-28T15:48:00028 August 2025 15:48:00
[Table view]10 CFR 30.50(b)(2) Stuck Open Shutter 2025-08-28T15:48:00 | |