ENS 51641
ENS Event | |
|---|---|
06:00 Dec 19, 2015 | |
| Title | Agreement State Report - Human Error Prevents a Radiography Source from Retracting |
| Event Description | The following report was received via e-mail:
On December 19, 2015, a crew from Mistras was working at a temporary jobsite [Donaldsonville, LA] located at CF Industries. The crew set up 2 mR boundaries for the duration of the 'shots'/exposures. The crew cranked out the source and made the exposure. When the crew tried to retract the source into the shielded position, [the source] would not [retract] because the guide tube was improperly connected to the exposure device. The source assembly remained out of the shielded position. When it was determined the source could not be retracted, immediately the area was cleared and the boundaries were reestablished for the 2 mR/hr distance. The lead radiographer contacted the RSO, and received instructions on how to secure/shield the area from potential/unnecessary exposures. The unshielded source and incident duration was from 1.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. The initial notice to the Department [LA Department of Environmental Quality] was made at approximately 1257 CST after the source was secured in the shielded position. The RSO did the actual retrieval and securing of the source. His time in the radiation field was approximately 30 to 40 minutes. He used the standards of time, distance and shielding to protect himself. His direct read pocket dosimeter reading was approximately 60 mR. The crew members pocket dosimeter readings were 50 mR and 20 mR. The exposure device and associated equipment (crank out control and source guide tube) were SPEC 150 exposure device S/N 1106 and a SPEC G-60 source. The source was 61 Ci of Ir-192. The equipment was evaluated and passed the quality assurance requirements. The radiography staff was reinstructed in the Mistras' Operation and Equipment Manual. Specifically the setup and equipment assembly, connecting and cranking out of the source and operating in potentially occupied areas. Louisiana Report: LA-150023 |
| Where | |
|---|---|
| Marathon Martinez Renewable Fuels Geismar, Louisiana (NRC Region 4) | |
| License number: | LA-10986-L01 |
| Organization: | Louisiana Radiation Protection Div |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+466.75 h19.448 days <br />2.778 weeks <br />0.639 months <br />) | |
| Opened: | Joseph Noble 16:45 Jan 7, 2016 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Jan 7, 2016 |
| 51641 - NRC Website
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Martinez Refining Company with Agreement State | |
WEEKMONTHYEARENS 580622025-11-24T06:00:00024 November 2025 06:00:00
[Table view]Agreement State Extremity Exposure Exceeding Limits ENS 571702024-06-04T17:34:0004 June 2024 17:34:00 Agreement State Agreement State Report - Stuck Source ENS 564882023-04-25T04:00:00025 April 2023 04:00:00 Agreement State Damaged Radiography Camera ENS 559712022-06-16T07:00:00016 June 2022 07:00:00 Agreement State Lost Shipment ENS 558722022-05-02T05:00:0002 May 2022 05:00:00 Agreement State Radiography Source Disconnect ENS 557172022-01-28T05:00:00028 January 2022 05:00:00 Agreement State Radiography Camera Equipment Failure ENS 556672021-12-17T03:00:00017 December 2021 03:00:00 Agreement State Radiography Device Safety Latch Failure ENS 530332017-10-19T16:05:00019 October 2017 16:05:00 Agreement State Agreement State Report - Whole Body Monitor Exceeded the Annual Occupational Exposure Limit ENS 527042017-04-20T17:30:00020 April 2017 17:30:00 Agreement State Agreement State Report - Unsecured Radiography Camera ENS 521992016-08-24T05:00:00024 August 2016 05:00:00 Agreement State Agreement State Report - Potential Radiographer Overexposure ENS 521102016-07-18T23:05:00018 July 2016 23:05:00 Agreement State Agreement State Report - Radiographer Unplanned Exposure ENS 516412015-12-19T06:00:00019 December 2015 06:00:00 Agreement State Agreement State Report - Human Error Prevents a Radiography Source from Retracting ENS 516082015-12-11T22:38:00011 December 2015 22:38:00 Agreement State Agreement State Report - Unattended Radiographic Exposure Device ENS 503422014-05-30T00:30:00030 May 2014 00:30:00 Agreement State Agreement State Report - Failure of Source to Retract ENS 498162014-02-09T18:35:0009 February 2014 18:35:00 Agreement State Agreement State Report - Radiography Camera Left Unattended ENS 498172014-02-09T14:00:0009 February 2014 14:00:00 Agreement State Agreement State Report - Radiography Camera Source Disconnect ENS 496362013-12-14T08:00:00014 December 2013 08:00:00 Agreement State Agreement State Report - Stuck Radiography Source ENS 490092013-05-06T05:00:0006 May 2013 05:00:00 Agreement State Agreement State Report - Stuck Radiography Source 2025-11-24T06:00:00 | |