Overexposure of a worker


Print View Posted on: 20 January 2016

Event Date: 28 January 2015 Event Type: Radioisotope Processing/Handling Facility
Event Location: Poland, National Centre for Nuclear Research INES Rating: 2 (Final)

On the 28th of January 2015, during an inspection of nuclear materials, a radiation worker accompanying the inspectors entered a hot cell containing Ir-192 radioactive sources with total activity of 33.3 TBq. Worker remained inside the cell for about 1 minute. Worker’s personal dosimeter recorded an effective dose of 31 mSv which exceeds the annual statutory dose limit for radiation workers (20mSv). Doses received by the 3 inspectors (considered radiation workers) present at the scene were assessed as 1 mSv, 4 mSv and 8 mSv based on personal dosimetry. The Regulatory Body (PAA) has been notified of the event on the 30th of January 2015. A commission investigating the event issued recommendations to introduce additional safety features and training on safety culture.

INES Rating: 2 - Incident (Final) as per 15 January 2016
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

Maciej Drabent
National Atomic Energy Agency

maciej.drabent@paa.gov.pl
http://www.paa.gov.pl
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