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Radiation exposure of uranium miners in Příbram area
KOSTKOVÁ, Martina
The uranium mining was operated in Příbram's region in the years 1950-1991. There were 41 pits, 42 exploratory shafts, 4 shafts and horizontal works in length of 2 188,3 km and the whole mining stretch covered the area of 57,6 km2 producing the quantity of 48 432,2 t of uranium (Příbram, 2017). The basic facts needed for writing this thesis were obtained and further processed over a period of time from June 2016 to March 2017 and contain the data referring to the years 1966-1999. The items were drawn from the individual dosimetric registers provided by Professor Dr.rer.nat. Friedo Zölzer, DSc. who had acquired them before from the DIAMO state enterprise. The dosimetric items were submitted by the miners who took part in the project implemented in 2008-2011 under the title "Biological dosimetry of persons exposed to alfa radiation at work" (2B08001within The National Research Project II.). The purpose of the thesis was to determine average radiation doses emitted by single kinds of radiation, which was achieved by a collection of statistically processed data extracted from the above mentioned dosimeric registers. It has been found out that some decrease in radiation has been attained thanks to the precaution such as ventilation in the miners that were introduced for purpose of workers' protection against ionizing radiation. In has been established that the average doses with all the mine workers are: out of gama = 0,03mGy; out of alfa (by conversion 1kBq = 11mSv) = 0,07mSv; out of alfa (by conversio 1 kBq = 3,5 mSv) = 0,04 mSv; out of the subsidiary radon products (by conversion 1mJ = 1,18mSv) = 0,52mSv; out of the subsidiary radon products (by conversion 1mJ = 2,36mSv) = 1,03mSv.
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