[en] The paper presents the research in dose reconstruction of the thyroid gland exposed to ''131I gas and aerosol blow-out of the siberian Group of Chemical Enterprises (SGCE). The statistical analysis of data on ''131I blow-out in gas and aerosol forms was carried out. It was shown that it is necessary to carry out additional research to determine the dependence of the average value on maximum and minimum parameters. A comparative analysis of average long-term data of meteorological factors as well as the data for the particular time periods has been carried out. (Author) 5 refs

[en] Scientific knowledge presently available in the area of monitoring the internal radiation due to nonstandard radionuclide intakes gives no way of identifying the location and nature of intakes in a reasonably accurate and expeditious manner. Both theoretical models and practical methods of personnel internal radiation screening exhibit the lack of research. To this end, the present paper deals with the experience gained by the SGChE in the monitoring of the nonstandard radionuclide penetration into internals and tissues of the personnel. It provides recommendations for the organization and implementation of such monitoring procedures, and describes the practical method for the vulnerary intake containment. (paper)