THE HYGIENIC ASSESSMENT OF INHALATION OF RADIONUCLIDES AS A RESULT OF FIRES IN GOMEL REGION

Objective: to assess the expected radiation doses and radiation risk of the population of Gomel region in case of fires and inhalation of^238,239,240Рu,²⁴¹Am,⁹⁰Sr,¹³⁷Cs, as well as to substantiate, if necessary, special protective measures and application of individual means for respiratory organs protection. Material and methods. Conservative assessments of expected radiation doses are based on the maximum levels of radioactive contamination in Belarus, and Ukrainian experimental data on the increased levels of radionuclides in fires around the Chernobyl Nuclear Power Plant Zone of Alienation. Results. The expected dose of radiation of the population of Gomel region as a result of inhalation of radionuclides during the week of fires in the 30-km Chernobyl exclusion zone will not exceed 10 μSv (1 % of the annual limit established by the law). Transuranium elements, which are present at the 30-km Chernobyl exclusion zone, make the main part of the inhalation dose. The results may have a slight indeterminacy as the dosimetric parameters significantly depend on soil and climatic and landscape features of the area of fires. To give the exact assessment it is necessary to collect samples of aerosols in the respiratory organs of the critical groups of the population at the different distance from the edge of the fire. Conclusion. The expected doses of radiation of the population of Gomel region as a result of inhalation of radionuclides during the week of fires in the 30-km Chernobyl exclusion zone did not exceed 1 % of the annual limit established by the law (1 μSv). It is not necessary to use special protection measures and individual means for respiratory organs protection.

пожар, ²³⁸ , 239, 240Рu, ²⁴¹Am , ⁹⁰Sr , ¹³⁷Cs , ингаляция, дозы облучения, fire, ²³⁸ , 239, 240Рu, ²⁴¹Am , ⁹⁰Sr , ¹³⁷Cs , inhalation, radiation doses

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