Uchaly Mining and Metallurgical Combine

The plan of an R&D test bench with 222 Rn and 220 Rn (thoron) generators for investigating the dynamic adsorption of radon is described. An approach to the investigation of dynamic radon adsorption based on the measurement of gamma-emitting daughter decay products of radon ( 214 Pb or 214 Bi) and thoron ( 212 Pb) in sections of a collapsible adsorption column is proposed. The proposed approach has a number of advantages over the classical method of output curves. It is shown that thorium hydroxide obtained by heterophase alkaline conversion of its salts can be used as an effective working material for a thoron generator.

The purpose of the article is to describe monitoring studies on the radiation state of air in populated and working areas near the uranium processing enterprise in the Republic of Uzbekistan. Ac-cording to the analytical measurement, the exposure dose of gamma radiation is equivalent to the equilibrium volume activity of radon, specific activity of long-lived alpha-emitting nuclides in the zone of influence of the enterprise, the working area, premises for storing uranium materials and manufacturing dumps, tailings dams and areas of underground uranium leaching. It was shown that the measurement results do not exceed the regional background and regulatory levels of radioactive radiation by all indicators. The dependence of the volume activity of radon at production facilities on the density of the radon flux from the soil was studied. The most intensive radioactive objects – uranium dumps – were identified. It was found out that there is no excess radioactive impact of the uranium enterprise on the environmental objects.