[Radioecological biomonitoring of the radioactive waste long-term storage territories].

Radionuclide release to environment is possible during long-term storage of the low and middle activity radioactive waste on specially equipped territories, which leads to radioactive background increase and to permanent radiation influence to biocenosis. For an ecological situation control in such places it is need to provide a biomonitoring using the method of complex estimation of the morphological changes on whole organism and internal organs levels (presents of tumors, teratogenic effects), the hematological indexes reflected quantifies and qualifies changes in blood, cytogenetic distribution (bone marrow polychromatic erythrocytes with micronuclei) and distributions on molecular level (alterations of DNA structure lead to increase in the DPC level).

[Results of radiation monitoring in Moscow region over 1957-2005].

The article contains data on radiation situation in Moscow region, characteristics of overall beta-activity of ambient air, fall-out density, radionuclide contents of foods. Radionuclides content of environment appeared to decrease by 2-3 orders. Individual doses of internal irradiation for Moscow population are 100 times lower than the levels legally set for technogenic sources.

[System preserving radiation safety for Moscow population].

Radiation safety system functioning on Moscow territory enables to control potential dangerous sources, opportunely reveal and liquidate accidents and pollutions, forecast degree of radiation jeopardy according to its components.

[Characteristics of the equivalent equilibrium volume activity of thoron in the buildings of Moscow].

The introduction of NRS-99 has consolidated the need of controlling the equivalent equilibrium volume activity of thoron (EEVATn) and radon (EEVARn) in the air of dwelling, industrial, and public buildings. Analysis of more than 1000 values of EEVATn measured in parallel with EEVARn, which was based on the well-known mechanisms of accumulation of radon, thoron and their derivatives in the air of premises made it possible to approximate the correlation between EEVATn and radon EEVARn and to estimate the value of radon EEVATn without its measurement several hours after air sampling.