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THE VALUES OF THE SPATIAL DOSE EQUIVALENT OF GAMMA RADIATION IN SELECTED LOCALITIES OF THE MORAVIAN - SILESIAN REGION (CZECH REPUBLIC)
Abstract
Due to a nuclear power station accident in Chernobyl the soil, agricultural crops and biomass were contaminated by radiocaesium, in other words radioactive caesium (137Cs) within the Czech Republic. Focused on long ? term contamination, the most important element is the radiocaesium (137Cs), which is absorbed by both the human organism and the plants and is still deposited in the upper layers of the soil. Experience not only from the Chernobyl and Fukushima disasters has shown that public access to up ? to ? date information on the radiation situation is an essential prerequisite for gaining and maintaining public confidence in crisis situations and its participation in implementing the necessary safeguards. Therefore, in selected locations of the Moravian ? Silesian Region, the dose rate (the value of the power equivalent of the gamma radiation dose equivalent) by the Safecast bGeigie Nano was determined in cooperation with the State Institute for Radiation Protection. The equipment was leased to State Institute for Radiation Protection, Prague, Czech Republic for the purpose of the project. The detector part is a Geiger ? M?ller (GM) detector with a high ? voltage source and the relevant electronics. The detector is a pancake type, specifically LND 7317 type from American company LND, Inc. The instrument was used to record the most significant sources of radiation of gamma ? natural nuclides 226Ra, uranium isotopes (238U, 235U), 232Th and 40K (and products of their decay) or 137Cs from Chernobyl nuclear disaster. This data was evaluated in the GIS environment.
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