Modern approaches to ensuring radon safety of buildings

The article is devoted to the study of the dynamics of radon accumulation in the air of the lower floors of buildings constructed from various building materials. The results of the practical and theo-retical work made it possible to determine the routes of radon entry into buildings, the places of its accumulation and movement. It is shown that the radon environment in a building is formed by two processes — the intake of radon from the soil base and its emanation from the materials of the enclosing structures, and the dominant process is determined by the combination of physical and mechanical characteristics of the soil and the design features of the underground shell of the building. The wide-spread use of modern technologies aimed at reducing heat losses is invariably accompanied by a de-crease in the air exchange rate. This leads to deterioration of air quality in buildings and increased radon concentrations. The accumulation of radon in highly efficient buildings contributes to an increase in radon loads of the population and is determined by the mode of operation of the premises