Accidental exposure of workers

Print View Posted on: 09 August 2023

Event Date: 24 March 2023 Event Type: Radioisotope Processing/Handling Facility
Event Location: Poland, Radioisotope Centre POLATOM, Otwock-Świerk INES Rating: 1 (Final)

On March 24th 2023 during the unloading of a transport package with a radioactive source of I-131 (4.07 TBq), contamination was detected on the inside of the package. After taking a swab, contamination was determined at the level of 200 Bq/cm^2. Four workers were contaminated (hands, personal protective clothing). Additionally the fork lift, floor in laboratory, foil on the floor and corridor were contaminated. Estimated effective doses to the four persons involved were between 1,01 mSv to 6,08 mSv. The dose constraint for the workers was established on 15 mSv. The contaminated areas were temporarily closed and successfully decontaminated.

INES Rating: 1 - Anomaly (Final) as per 07 June 2023
Release beyond authorized limits? No
Overexposure of a member of the public? No
Overexposure of a worker? Yes

Contamination spread within the facility? Yes
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

Mr. Maciej Krawczyk
Radiation Emergency Centre, National Atomic Energy Agency
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