Search - Number 23 - CHARACTERISTICS OF RADIOACTIVE AEROSOLS IN PREMISE 211/2 OF THE OBJECT “UKRYTTYA” IN 2012

CHARACTERISTICS OF RADIOACTIVE AEROSOLS IN PREMISE 211/2 OF THE OBJECT “UKRYTTYA” IN 2012
Cover not present CHARACTERISTICS OF RADIOACTIVE AEROSOLS IN PREMISE 211/2 OF THE OBJECT “UKRYTTYA” IN 2012
Category: Number 23
Publication: 23
Summary

Radionuclide composition, volume activity and dispersity are presented in "Ukryttya" object premise 211/2 in 2012 year. The samples were taken with using Petryanov's three-layer filters. It was stated that concentration of beta-radiating aerosol-carriers (90Sr + 90Y and 137Cs), as a rule, was fluctuating within the range of 1 - 40 Bq/m3. The ratio of 137Cs/summ(B) = 0,26 and 137Cs/241Am = 31 had indicated that the air came in premise 211/2 from premises, where the de-struction of lava-like fuel materials and a partial transfer in the aerosol state. Their carriers were the particles with active median aerodynamic diameter 1- 8 µm. Maximal concentration of radon made near 100 Bq/m3. The carriers of daughter products of radon and thoron were the particles with active median aerodynamic diameter 0,1 - 0,3 µm. Volumetric activity of 212Pb was fluctuating within the range of 1 - 10 Bq/m3

Keywords: "Ukryttya" object, lava-like fuel-containing materials, three-layer filters of radioactive aerosols, volumetric activity, dispersity, ratio of radionuclides

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