ENS 55158: Difference between revisions
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The licensee reported that on February 12, 2021 while using a QSA Global Model 880, Serial # D15520, containing a 128 Curie source of iridium-192, the source failed to fully retract and lock. The technicians secured the area by adjusting their 2 mR/hr boundaries to an unshielded source distance and immediately contacted their company designee. Once on scene, the designee surveyed the scene and device and found elevated readings. Working the crank handle back and forth several times he was able to return the source to the secured and locked position. The device was taken back to the licensee's storage vault in Williamsport, PA for inspection. The cause of the incident is believed to be cold temperature and freezing of the lock mechanism. The Radiation Safety Officer (RSO) subsequently investigated the incident and found that neither the radiographer nor the assistant radiographer had been performing proper radiation surveys during the workday which would have identified the lock failure sooner. As a result, the radiographer received a dose of 876 mR. We are still awaiting a dose on the assistant radiographer. Corrective actions include retraining all radiography employees to follow proper procedure. Also, both the radiographer and assistant radiographer are no longer employed by the licensee. | The licensee reported that on February 12, 2021 while using a QSA Global Model 880, Serial # D15520, containing a 128 Curie source of iridium-192, the source failed to fully retract and lock. The technicians secured the area by adjusting their 2 mR/hr boundaries to an unshielded source distance and immediately contacted their company designee. Once on scene, the designee surveyed the scene and device and found elevated readings. Working the crank handle back and forth several times he was able to return the source to the secured and locked position. The device was taken back to the licensee's storage vault in Williamsport, PA for inspection. The cause of the incident is believed to be cold temperature and freezing of the lock mechanism. The Radiation Safety Officer (RSO) subsequently investigated the incident and found that neither the radiographer nor the assistant radiographer had been performing proper radiation surveys during the workday which would have identified the lock failure sooner. As a result, the radiographer received a dose of 876 mR. We are still awaiting a dose on the assistant radiographer. Corrective actions include retraining all radiography employees to follow proper procedure. Also, both the radiographer and assistant radiographer are no longer employed by the licensee. | ||
PA Event Report ID No: PA210003 | PA Event Report ID No: PA210003 | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2021/ | | URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2021/20210406en.html#en55158 | ||
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Latest revision as of 08:30, 6 April 2021
| Where | |
|---|---|
| Titan Inspection, Inc. Williamsport, Pennsylvania (NRC Region 1) | |
| License number: | PA-1559 |
| Organization: | Pa Bureau Of Radiation Protection |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+1091.82 h45.493 days <br />6.499 weeks <br />1.496 months <br />) | |
| Opened: | John Chippo 14:49 Mar 29, 2021 |
| NRC Officer: | Bethany Cecere |
| Last Updated: | Mar 29, 2021 |
| 55158 - NRC Website | |