Search - Number 21 - CONTROL OF RELEASES OF RADIOACTIVE AEROSOLS FROM OBJECT “UKRYTTYA” IN 2012

CONTROL OF RELEASES OF RADIOACTIVE AEROSOLS FROM OBJECT “UKRYTTYA” IN 2012
Cover not present CONTROL OF RELEASES OF RADIOACTIVE AEROSOLS   FROM OBJECT “UKRYTTYA” IN 2012
Category: Number 21
Publication: 21
Summary

The results of control of radioactive particulate emission are presented from the object "Ukryttya" in 2012. The maximal rate of unorganized releases of beta-radiating products of Chernobyl accident was in winter period, and reached 1,6 MBq/day. The concentration of long-lived beta-radiating aerosols released in atmosphere from system "Bypass" was within the range 0.05 - 10 Bq/m3 (maximal concentration was 13 Bq/m3). Them carriers were particles with active median aerodynamic diameter (AMAD) 1- 6 µm. The concentration of 212Pb (daughter products of thoron) consisted as a rule 1 - 5 Bq/m3. They have AMAD 0.1 - 0.3 µm. The relation of concentrations of daughter products of radon and 212Pb were about 4. A volume activity and dispersity of aerosols in releases from object "Ukryttya" remain constant the last nine years.
Keywords: object "Ukryttya", aerosols, volumetric activity, activity median aerodynamic diameter.

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