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The physical features of distribution of the small dispersive coal dustparticles and the adsorbed radioactive chemical elements and their isotopes inthe absorber with the granular filtering medium with the cylindrical coalgranules were researched in the case of the intensive air dust aerosol streamflow through the iodine air filter (IAF). It was shown that, at the certainaerodynamic conditions in the IAF, the generation of the acoustic oscillationsis possible. It was found that the acoustic oscillations generation results inan appearance of the standing acoustic waves of the air pressure (density) inthe IAF. In the case of the intensive blow of the air dust aerosol, it wasdemonstrated that the standing acoustic waves have some strong influences onboth: 1) the dynamics of small dispersive coal dust particles movement andtheir accumulation in the IAF; 2) the oversaturation of the cylindrical coalgranules by the adsorbed radioactive chemical elements and their isotopes inthe regions, where the antinodes of the acoustic waves are positioned. Finally,we completed the comparative analysis of the theoretical calculations with theexperimental results, obtained for the cases of: 1) the experimentalaerodynamic modeling of physical processes of the absorbed radioactive chemicalelements and their isotopes distribution in the IAF; and 2) thegamma-activation spectroscopy analysis of the absorbed radioactive chemicalelements and their isotopes distribution in the IAF. We made the innovativepropositions on the necessary technical modifications with the purpose toimprove the IAF technical characteristics and increase its operational time atthe nuclear power plant (NPP), going from the completed precisecharacterization of the IAF parameters at the long term operation.

Distribution of small dispersive coal dust particles and absorbed  radioactive chemical elements in conditions of forced acoustic resonance in  iodine air filter at nuclear power plant