ENS Event | |
|---|---|
04:00 Jun 27, 2025 | |
| Title | Ruptured Sealed Source |
| Event Description | The following information was provided by the Georgia Radioactive Materials Program Environmental Protection Division (the State) via email:
On June 27, 2025, a krypton-85 sealed source capsule ruptured while unloading a Honeywell model 2201 series thickness gauge. The manufacturing engineer immediately turned on the fume hood and left the room when it was noticed the radiation monitors in the area rapidly increased in dose. It was determined the capsule had ruptured. The highest dose rate in the area of the source was 7 mR/h. The source was placed in the fume hood to allow gas to escape. The dose rate returned to normal approximately an hour after the source was placed in the fume hood. The dose rate at the source was then indistinguishable from background. The empty capsule was placed in a paint can containing cat litter and placed in their radiation source storage area. As a corrective action, all persons performing this activity have been retrained on loading and unloading the model 2201 source capsule, and regarding the importance of safety when unloading sealed source capsules containing [radioactive material]. The thermoluminescent dosimeter badge of the manufacturing engineer will be sent to Landauer [the manufacturer] and the licensee will notify the State when they receive those results. Respirators are not utilized in their daily operations. The State will continue to investigate the incident and will follow up with new information. Additional information on the sealed source: Model: KAC.D5 Serial number: TW911 Activity: 14.8 GBq of krypton-85 as of December 2, 2011
The following information was provided by the Georgia Radioactive Materials Program (RMP) via email: The licensee submitted the dosimetry report for the manufacturing engineer involved in the incident. The individual received a deep dose equivalent of 36 mrem for the monitoring period of April 1, 2025 - June 30, 2025. RMP considers the incident closed with no further follow up needed. Notified R1DO (Dimitriadis) and NMSS Events Notification (email). Georgia incident number: 101 |
| Where | |
|---|---|
| Honeywell International Inc. Duluth, Georgia (NRC Region 1) | |
| License number: | GA 832-1 |
| Organization: | Georgia Radioactive Material Pgm |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+131.27 h5.47 days <br />0.781 weeks <br />0.18 months <br />) | |
| Opened: | Chelsea Parkerson 15:16 Jul 2, 2025 |
| NRC Officer: | Tenisha Meadows |
| Last Updated: | Aug 19, 2025 |
| 57796 - NRC Website | |
Honeywell International Inc. with Agreement State | |
WEEKMONTHYEARENS 577962025-06-27T04:00:00027 June 2025 04:00:00
[Table view]Agreement State Ruptured Sealed Source 2025-06-27T04:00:00 | |