Problems of Radiation Medicine and Radiobiology

L. Сrygorieva, Yu. Tomilin

Petro Mohyla Black Sea National University, 10, 68 Marines street, Mykolayiv, 54003, Ukraine

Doses from radon-222 irradiation for workers of the granite mining industry

Objective: determining the integral value of annual effective dose from ²²²Rn for workers of the granite mining industry and assessment for the expected life effective dose from ²²²Rn.
Materials. Materials were the results of measurements of external exposure dose of radiation measurements equivalent equilibrium volume activity of ²²²Rn in workrooms and workplaces of major groups of granite quarry workers Mykolaiv region, studies EROA ²²²Rn air premises of these workers, research content ²²²Rn in drinking water.
Results and conclusions. Granite quarry workers receive double radiation exposure of ²²²Rn due to exposure in the workplace and at home. The load in the workplace due to inhalation of ²²²Rn the air was (2.1 ± 0.2) mSv / year (variation 0.9–5.9) in a residential area – (4,1 ± 0,2) mSv/year (variation 1.8–5.9). The total annual effective dose from internal exposure from air flow and working premises and drinking water was on average (6,5 ± 0,2) mSv/year, equal to a maximum value of 20 mSv/year. The expected life for the chronic exposure dose of technological-naturally occurring radioactive sources for people who work in the granite quarries and, while living in high risk from radon is in the range of 0.16–1.12 Sv. The research results indicate that in assessing the effects associated with exposure due to radon-222 contingents persons such surveys must take into account all sources of this radionuclide dose.
Key words: effective dose, radon-222, granite quarry workers.

Problems of radiation medicine and radiobiology. 2017;22:97-107.