Doses Recorded Through Occupational Exposures Using Two Enshrined Passive Dosimetry Methods and Personal Monitoring Option

In this paper, are presented the occupational exposure monitoring results from different nuclear areas, such as: research, industry, medicine, safety and inspection nuclear units recorded during the period 2009 – 2013, using two passive dosimetry methods. A part from the personnel occupational exposure was double monitored using both halide film dosimeter HFD and thermoluminescent dosimeter TLD. The statistical analysis on the number of workers and the collective dose values on dose ranges were performed. The customer preferences regarding the dosimetric method were especially highlighted. In the case of the TLD monitoring, the results show that the most workers are situated in the dose range of 1.0 and 2.0 mSv because the environmental dose was not subtracted from the occupational doses; above these limits too few workers have recorded doses. The most number of workers with doses above HFD limit of detection, almost 30 in 271 workers was recorded in 2011 in nuclear industry area. In 2009, after the TLD method accrediting, approximately 360 persons were radiological monitored by this relatively new method for the nuclear industry from Romania, and in 2013 the number of persons increased to 954; the number of workers monitored by HFD decrease from 798 in 2009 to 619 in 2013. (author)