Personal dosimetry TLD for low doses : feasibility study os readings

Monthly dosimetric readings from professionally exposed workers in medical centres offer values lower than 1 mSv. These values appear in a small range and with an apparently random distribution for each type of activity. As a part of the quality assurance programme of the Radiological Protection Unit of our Hospital, it seems appropriate to verify the reliability of the readings of TLD-100 dosimeter for low integrated doses. The procedure described in this work allows the evaluation of the reliability of the obtained results for those doses. It also shows the possible influence in the results of different dose rates in different irradiation conditions as well as the possible difference in the readings when the time intervals between irradiation and reading moments are different. (Author)