ENS Event | |
|---|---|
18:00 May 20, 2009 | |
| Title | Minnesota Agreement State Report - Unable to Retract Radiography Camera Source |
| Event Description | The following information was obtained from the State of Minnesota via email:
On Wednesday, May 20, 2009, at approximately 1300 hrs, a licensee was performing radiography at a temporary job site using a 41 Curie Ir-192 source when the stand holding the guide tube fell from its secured position and landed on the guide tube near the camera, crimping the guide tube. The radiographer attempted numerous times to retract the source and was unsuccessful. The radiographer performed radiation surveys to reset the boundaries and contacted the management. The Radiation Safety Officer was also contacted. The NDT [Non-Destructive Testing] manager used steel plates for shielding in order to disconnect the guide tube from the camera. Once disconnected, the NDT manager proceeded to the collimator end of the guide tube and pulled the guide tube to allow the source to pass through the crimped portion. When the source passed through the kink, the radiographer cranked the source into its shielded position. The NDT manger received 121 mrem, the radiographer received approximately 40 mrem. Leak tests results indicate that the source was not effected. The guide tube has been discarded. The root cause of the event was determined to be that the radiographers failed to ensure that all four legs of the magnets on the ring stand used to support the guide tube were not in contact with metal due to the curvature of the surface. The weight of the guide tube caused the stand to fall and to crimp the guide tube. |
| Where | |
|---|---|
| American Engineering And Testing Minnesota (NRC Region 3) | |
| License number: | 1089-204-62 |
| Organization: | Minnesota Department Of Health |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+1293 h53.875 days <br />7.696 weeks <br />1.771 months <br />) | |
| Opened: | George Johns 15:00 Jul 13, 2009 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Jul 13, 2009 |
| 45201 - NRC Website | |
American Engineering And Testing with Agreement State | |
WEEKMONTHYEARENS 450832009-05-20T20:30:00020 May 2009 20:30:00
[Table view]Agreement State Agreement State Report - Stuck Radiography Source ENS 452012009-05-20T18:00:00020 May 2009 18:00:00 Agreement State Minnesota Agreement State Report - Unable to Retract Radiography Camera Source ENS 436282007-09-10T08:00:00010 September 2007 08:00:00 Agreement State Agreement State Report - Damaged Moisture Density Gauge 2009-05-20T20:30:00 | |