Exposure of workers in excess of statutory annual dose limits

Print View Posted on: 18 January 2022

Event Date: 23 November 2021 Event Type: Radiation Source
Event Location: Sweden, Norrköping INES Rating: 2 (Final)

On November 23, 2021 two workers were carrying out a pipe inspection using a portable X-ray generator. While trying to start up the X-ray generator after adjusting some parameters, the workers realized that the device was already on. The workers could not remember exactly when the X-ray generator had been started and they had early on been in its vicinity. Furthermore none of the two workers was wearing a dosimeter while being the vicinity of the X-ray generator.

According to a dose reconstruction of the incident the workers may have received an effective dose of 44 mSv, twice the annual limit of 20 mSv.

INES Rating: 2 - Incident (Final) as per 18 January 2022
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

Maria Gabrielsson
Swedish Radiation Safety Authority

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