Overexposure to Radiation Worker

Print View Posted on: 30 July 2012

Event Date: 30 September 2011 Event Type: Irradiation/Accelerator Facility
Event Location: United States of America, Wichita, Kansas/ PFI, LLC INES Rating: 2 (Final)

One of the licensee's cyclotron operators received an extremity acute overexposure of 530 mSv (53.01 rem) to the right finger during the month of September as a result of cyclotron operations. The acute exposure brought the individual's total extremity exposure to 690 mSv (69 rem) for the year. The Regulatory Authority for this cyclotron, the State of Kansas, is continuing their investigation of the incident.

The final calculated dose to the fingers of the worker's right hand was determined to be 764 mSv (76.4 rem) for the year 2011.

INES Rating: 2 - Incident (Final) as per 20 June 2012
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

Dr. Cynthia Jones
Nuclear Regulatory Commission (NRC)

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