ENS 52596
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ENS Event | |
|---|---|
05:00 Mar 7, 2017 | |
| Title | Radiography Camera Source Did Not Lock in the Shielded Position When Retracted |
| Event Description | While performing radiography in arctic conditions at the Alpine oil field between ice roads CD1 and CD5, the radiographer retracted the source after an exposure and failed to recognize that the source was not in the locked position. Prior to moving the radiography camera to the next area for an exposure, the survey indicated the source was in the shielded position. The radiographer picked up the camera to take it to the next weld location for an exposure. When the radiographer placed the radiography camera down, his dosimeter rate alarm sounded, his survey meter (on the 10 scale setting) was off scale and his pocket dosimeter was off scale. It is believed that during the moving of the camera to the next shot location the source came out of the fully shielded position. The exact time and distance of the exposure is not known. Calculations show that the radiographer may have received between 3.5R - 39R of exposure. The radiographer's dosimeter has been sent for processing and results are expected in approximately 2 days. The assistant radiographer was not in the direct vicinity and received no exposure due to this event. The radiography camera involved was a QSA Global Model 880D with a 84.6 Ci Ir-192 source.
The badge reading of the radiographer indicated that he received 452 mR exposure for the month therefore no overexposures occurred due to this event. Notified R4DO (O'Keefe), NMSS (McIntosh) and NMSS Events Notification email. |
| Where | |
|---|---|
| Kakivik Asset Management Anchorage, Alaska (NRC Region 4) | |
| License number: | 50-27667-01 |
| Organization: | Kakivik Asset Management |
| Reporting | |
| 10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure | |
| Time - Person (Reporting Time:+8.73 h0.364 days <br />0.052 weeks <br />0.012 months <br />) | |
| Opened: | Patton Pettijohn 13:44 Mar 7, 2017 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Mar 13, 2017 |
| 52596 - NRC Website | |
Kakivik Asset Management with 10 CFR 30.50(b)(2) | |
WEEKMONTHYEARENS 540502019-05-05T08:18:0005 May 2019 08:18:00
[Table view]10 CFR 30.50(b)(2) Stuck Radiography Camera Source ENS 526912017-04-18T10:30:00018 April 2017 10:30:00 10 CFR 30.50(b)(2) Failure of the Radiography Camera Locking Mechanism ENS 525962017-03-07T05:00:0007 March 2017 05:00:00 10 CFR 30.50(b)(2) Radiography Camera Source Did Not Lock in the Shielded Position When Retracted ENS 515822015-12-01T10:00:0001 December 2015 10:00:00 10 CFR 30.50(b)(2) Radiography Camera Fails to Lock Source Automatically When Retracted ENS 481192012-07-02T07:45:0002 July 2012 07:45:00 10 CFR 30.50(b)(2) Unable to Retract Source Into Radiography Camera ENS 474282011-11-10T20:10:00010 November 2011 20:10:00 10 CFR 30.50(b)(2) Radiography Camera Source Fails to Completely Retract ENS 474182011-11-06T07:00:0006 November 2011 07:00:00 10 CFR 30.50(b)(2) Radiography Camera Source Lock Malfunction ENS 465332011-01-11T08:59:00011 January 2011 08:59:00 10 CFR 30.50(b)(2) Locking Mechanism Malfunction on Radiography Camera ENS 463232010-10-10T00:00:00010 October 2010 00:00:00 10 CFR 30.50(b)(2) Locking Mechanism Malfunction on Radiography Camera ENS 462332010-09-04T08:00:0004 September 2010 08:00:00 10 CFR 30.50(b)(2) Locking Mechanism Malfunction on Radiography Camera ENS 460522010-06-29T09:00:00029 June 2010 09:00:00 10 CFR 30.50(b)(2) Lock Malfunction on a Radiography Camera ENS 460512010-06-29T08:00:00029 June 2010 08:00:00 10 CFR 30.50(b)(2) Source Locking Malfunction of Radiography Camera ENS 456482010-01-22T09:00:00022 January 2010 09:00:00 10 CFR 30.50(b)(2) Failure to Fully Retract the Source of a Radiography Camera ENS 456092010-01-06T10:50:0006 January 2010 10:50:00 10 CFR 30.50(b)(2) Failure to Fully Retract the Source of a Radiography Camera ENS 455442009-12-07T13:30:0007 December 2009 13:30:00 10 CFR 30.50(b)(2) Failure to Fully Retract the Source of a Radiography Camera ENS 455242009-11-27T17:00:00027 November 2009 17:00:00 10 CFR 30.50(b)(2) Failure to Fully Retract the Source of a Radiography Camera ENS 454962009-11-13T00:30:00013 November 2009 00:30:00 10 CFR 30.50(b)(2) Failure to Fully Retract the Source of a Radiography Camera ENS 454692009-10-27T08:45:00027 October 2009 08:45:00 10 CFR 30.50(b)(2) Radiography Source Unable to Fully Retract ENS 453842009-09-27T10:00:00027 September 2009 10:00:00 10 CFR 30.50(b)(2) Radiography Camera Source Fails to Fully Retract Into Camera ENS 437692007-11-03T23:00:0003 November 2007 23:00:00 10 CFR 30.50(b)(2) Radiography Camera Source Fails to Fully Retract Into Camera ENS 431172007-01-13T21:30:00013 January 2007 21:30:00 10 CFR 30.50(b)(2) Failure of Radiography Camera Source to Fully Retract ENS 430672006-12-28T11:30:00028 December 2006 11:30:00 10 CFR 30.50(b)(2) Failure of Radiography Camera Source to Fully Retract ENS 426822006-03-08T08:00:0008 March 2006 08:00:00 10 CFR 30.50(b)(2) Radiography Source Pigtail Disconnected from Drive Cable 2019-05-05T08:18:00 | |
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