DOI: 10.36347/sjams.2019.v07i08.052

Pages: 2898-2901

Objective: The purpose of this study is to estimate the annual dose received by the different categories of personnel following their exposure to ionizing radiation during their exercise at the external radiotherapy department of the Regional Center for Oncology in Agadir. Materials and methods: Operational dosimeters and a TERRA Survey meter were used to measure the dose rate and the dose around equipment operating with ionizing radiation. An Inspector detector is used to evaluate the reliability of these two measuring instruments. It is 7% and 7.83% respectively for operational dosimeters and the TERRA Survey meter. The annual exposure dose was calculated by multiplying the dose rate by the occupational treatment time. Results: The relative error recorded during simultaneous measurements at the same points by both measuring devices ranges from 5.88 to 9.78% with an average error of 7.83%. The average dose rate measured for category A ranges from 0.108µSv/h to 0.158µSv/h with an average value of 0.132µSv/h. It is 0.101µSv/h for category B. For category C, it is 0.073µSv/h. The estimated annual doses for the three categories of personnel are 0.185mSv for category a, 0.141mSv for category B and 0.102 mSv for category C. Conclusion: The estimated annual exposure doses for the three categories of personnel are well below the dose limits set by national regulations and by the International Commission on Radiological Protection (ICRP). Consequently, the RCO in Agadir provides convenient radiation protection conditions for staff and patients.