ENS 51105
ENS Event | |
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06:10 May 30, 2015 | |
Title | Radiography Source Stuck in Guide Tube |
Event Description | The equipment supporting the collimator, guide tube, and extension tube fell from a height of 9 feet causing the guide tube to become entangled in the piping below. [The guide tubes fell on equipment below and the short radius bends prevented source retrieval.]
Equipment Involved: 7 foot flexible guide tube Serial Number GT060 7 foot flexible extension tube serial number EXT-15 Exposure device model: Sentinel Delta 880D, serial # D11876 Isotope: Ir-192, source Serial Number 17211G Source Activity: 102.3 Ci 35 foot Control Assembly S/N 16681 Place: Salt Water Treatment Plant, Central Operating Area, Prudhoe Bay, Alaska Actions taken to establish normal operations: The radiographer extended his restricted area and contacted the plant operator to inform him of the situation. He and the assistant radiographer then maintained security of the restricted area throughout the duration of the event. At no time did any member of the public enter the restricted area. The Radiation Safety Officer was contacted by the radiographer and arrived on the scene at 2320 hours [AKDT]. Remote handling tools were used to untangle the guide tube and extension tube. Once the equipment was properly laid out the source was retracted to the shielded position using the control assembly. Corrective actions taken and planned to prevent reoccurrence: Retrain personnel on setup techniques with an increased focus on the stabilization of equipment. Qualifications [and dose] of personnel involved in incident: (1) IRRSP card holder, dose received, 7mR (2) Assistant Radiographer, dose received, 17mR (3) IRRSP card holder, dose received, 2mR (4) Jeremey A. Dunning, Site Radiation Safety Officer, IRRSP card holder, Source Retrieval trained by LAMCO & Associate February 25, 2011, dose received, 23mR (Dosimeter) |
Where | |
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Mistras Group Prudhoe Bay, Alaska (NRC Region 4) | |
License number: | 12-16559-02 |
Organization: | Mistras Group |
Reporting | |
10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure | |
Time - Person (Reporting Time:+9.48 h0.395 days <br />0.0564 weeks <br />0.013 months <br />) | |
Opened: | Jeremy Dunning 15:39 May 30, 2015 |
NRC Officer: | Mark Abramovitz |
Last Updated: | May 30, 2015 |
51105 - NRC Website
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Mistras Group with 10 CFR 30.50(b)(2) | |
WEEKMONTHYEARENS 570892024-04-23T03:30:00023 April 2024 03:30:00
[Table view]10 CFR 30.50(b)(2) Radiography Camera Source Retrieval ENS 553442021-07-07T21:00:0007 July 2021 21:00:00 10 CFR 30.50(b)(2) Source Retrieval ENS 548092020-07-31T16:55:00031 July 2020 16:55:00 10 CFR 30.50(b)(2) Non-Agreement State Report - Damaged Radiography Camera Guide Tube ENS 511052015-05-30T06:10:00030 May 2015 06:10:00 10 CFR 30.50(b)(2) Radiography Source Stuck in Guide Tube 2024-04-23T03:30:00 | |