Radiation exposure of a hospital employee beyond the statuary annual dose limit

Print View Posted on: 21 January 2021

Event Date: 31 January 2020 Event Type: Other
Event Location: Germany, Hospital, Bavaria, Germany INES Rating: 2 (Final)

The evaluation of the OSL (Optically Stimulated Luminescence) whole-body dosimeter of a hospital employee showed a reading of 24.2 mSv. This exceeds the German statuary annual dose limit for the whole-body dose of exposed radiation personnel of 20 mSv. The person concerned showed no deterministic effects. The dosimeter was worn by the employee for one calendar month before reading. Neither the radiation protection supervisor nor the person concerned could explain a possible exposure scenario. The hospital and the employee stated that necessary radiation protection measures have always been applied. The evaluation of the dosimeter readings of preceding 12 months showed no recorded exposure. The competent authority instructed the hospital that the whole-body dose of the concerned employee accumulated within 5 years (including the dose of 24.2 mSv) must not exceed 100 mSv.

INES Rating: 2 - Incident (Final) as per 21 January 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

Michael Maqua
Gesellschaft für Anlagen und Reaktorsicherheit

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