Individual monitoring for internal exposure of workers: regulation and practice in Hungary

Decree of Ministry of Health for the enforcement of the Act on Atomic Energy has put special emphasis on the regulation of monitoring for internal exposure in Hungary. The necessarily general prescription of the Decree called for a guidance to assist the work of the competent authority. The Guide was elaborated on the basis of the IAEA Safety Guide No. RS-G-1.2. According to the IAEA Safety Guide the decision factor shall first be determined for the potential radionuclides and practice applied. For routine monitoring the required frequency, method and MDA values, moreover for special monitoring the method and MDA values were derived for over 50 radionuclides considering two basic assumptions: the activity remaining in or excreted from the body could be determined by the given measurement method and the possible underestimation of intake shall be less than a factor of 3 within the monitoring interval.