Overexposure to Worker

Print View Posted on: 17 March 2021

Event Date: 11 March 2021 Event Type: Radiation Source
Event Location: United States of America, Livingston, Louisiana / EPIC Piping, LLC INES Rating: 2 (Final)

A radiographer was exposed to Ir-192 sources while working with industrial radiography cameras at a permanent fixed facility. The badge showed the individual involved received a dose of 0.07 Sv (7.2 rem). The radiographer potentially used different radiography cameras with different sources according to which shooting cell was being used on that day and the thickness of the material being exposed. As a corrective action, the radiographers will not be present inside the shooting cell when a source is outside of a shielded condition. Longer control cables will be used to reach the intended exposure location. Alternatively, the shooting cell will be accessed from the rear which will allow for shorter control cables to be used without being inside the cell. Indication lights will be placed on both sides of the wall to mark the entrance of the shooting cell. Personnel received training to prevent the recurrence of this event. The dose received exceeds the U.S. statutory limit for whole body dose of 0.05 Sv (5 rem). NRC EN55133

INES Rating: 2 - Incident (Final) as per 17 March 2021
Release beyond authorized limits? No
Overexposure of a member of the public? No
Overexposure of a worker? Yes

Contamination spread within the facility? No
Damage to radiological barriers (incl. fuel damage) within the facility? No

Degradation of Defence In-Depth No

Person injured physically or casualty? No
Is there a continuing problem? No

Patricia Milligan
Nuclear Regulatory Commission (NRC)

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