Dosimetry tackles the consideration of changes in a substance at ionising radiation and the measurements of ionising radiation dose in substance and tissues.
An employer must ensure that the exposure of workers is established regularly and that radiation is measured at the work place, in case of emergency exposure or exposure at extraordinary events and that the results of establishing exposure and radiation measurements are recorded and reported to the authority competent for radiation protection.
Exposure of workers and radiation measurements at work places can be performed by legal entities that acquire the authorisation to pursue dosimetry tasks from the authority competent for radiation protection.
The authorisation is issued to a legal entity that fulfils the prescribed conditions, i.e. for maximum five years for one or several areas of dosimetry:
- establishing the exposure to external radiation and giving expert opinions that base on measurements and/or calculations;
- establishing the exposure to internal radiation at work with open sources and giving expert opinions that base on measurements and/or calculations;
- establishing radon and thoron exposure and giving expert opinions that base on measurements and/or calculations.