ENS 45991: Difference between revisions
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| event date = 03/11/2010 CDT | | event date = 03/11/2010 CDT | ||
| last update date = 06/09/2010 | | last update date = 06/09/2010 | ||
| title = Agreement State Report - Radiography Camera Source Failed | | title = Agreement State Report - Radiography Camera Source Failed to Retract | ||
| event text = On June 9, 2010 the Incident Investigation Program was notified via email by the Nuclear Regulatory Commission that the licensee had experienced a failure to retract a radiography source that had occurred on March 11, 2010 somewhere in Texas. A radiography crew out of Sulphur, Louisiana was working in Beaumont, Texas, when the 96 Curie, Iridium 192 radiography source became stuck during the crew's 6th exposure (approximately 1250 Central Daylight Time). The two person radiography team then extended their barricade to about 350 feet from the source. The crew notified their sight representative, as well as the Site Radiation Safety Officer of the Sulphur, Louisiana office. While one of the radiographers verified the 2mR/hr boundary with a survey meter, the other stood behind a large pump at the plant and repeatedly tried to crank the source back into the camera. After approximately 7 minutes, the radiographer was able to return the source to the camera. The radiography crew verified the source local in the shielded position with their survey meter. According to the report submitted by the Louisiana Site RSO (LARSO), no members of the public or workers were overexposed. Later that same day, the LARSO met with the radiographers. The LARSO subsequently sent the radiographers' TLD badges to be read on Friday March 12, 2010. The results were returned on Monday, March 15, 2010. According to the report by the LARSO, it was determined that one of the radiographers received 55mR and the other 210 mR as a result of this event. | | event text = On June 9, 2010 the Incident Investigation Program was notified via email by the Nuclear Regulatory Commission that the licensee had experienced a failure to retract a radiography source that had occurred on March 11, 2010 somewhere in Texas. A radiography crew out of Sulphur, Louisiana was working in Beaumont, Texas, when the 96 Curie, Iridium 192 radiography source became stuck during the crew's 6th exposure (approximately 1250 Central Daylight Time). The two person radiography team then extended their barricade to about 350 feet from the source. The crew notified their sight representative, as well as the Site Radiation Safety Officer of the Sulphur, Louisiana office. While one of the radiographers verified the 2mR/hr boundary with a survey meter, the other stood behind a large pump at the plant and repeatedly tried to crank the source back into the camera. After approximately 7 minutes, the radiographer was able to return the source to the camera. The radiography crew verified the source local in the shielded position with their survey meter. According to the report submitted by the Louisiana Site RSO (LARSO), no members of the public or workers were overexposed. Later that same day, the LARSO met with the radiographers. The LARSO subsequently sent the radiographers' TLD badges to be read on Friday March 12, 2010. The results were returned on Monday, March 15, 2010. According to the report by the LARSO, it was determined that one of the radiographers received 55mR and the other 210 mR as a result of this event. | ||
On March 15, 2010 the crank out assembly was sent to the manufacturer (QSA Global) for inspection and repair. QSA determined that the bearing assembly in the pistol control crank had come apart. Part of the bearing assembly had worked its way into and lodged into the drive gear assembly. The piece of the bearing assembly then caused a tooth of the drive gear assembly to break off. The tooth was large enough to become jammed between the drive gear and the drive cable in the pistol control. This caused the pistol to malfunction. QSA repaired the assembly and all defective parts were replaced, and the assembly passed all tests. | On March 15, 2010 the crank out assembly was sent to the manufacturer (QSA Global) for inspection and repair. QSA determined that the bearing assembly in the pistol control crank had come apart. Part of the bearing assembly had worked its way into and lodged into the drive gear assembly. The piece of the bearing assembly then caused a tooth of the drive gear assembly to break off. The tooth was large enough to become jammed between the drive gear and the drive cable in the pistol control. This caused the pistol to malfunction. QSA repaired the assembly and all defective parts were replaced, and the assembly passed all tests. | ||
Latest revision as of 21:09, 1 March 2018
| Where | |
|---|---|
| Acuren Inspections Inc. Sulphur, Louisiana (NRC Region 4) | |
| License number: | L01774 |
| Organization: | Texas Department Of Health |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+2168.43 h90.351 days <br />12.907 weeks <br />2.97 months <br />) | |
| Opened: | Annie Backhaus 12:26 Jun 9, 2010 |
| NRC Officer: | Pete Snyder |
| Last Updated: | Jun 9, 2010 |
| 45991 - NRC Website | |