Abstract
The article presents the results of research of the radioecological situation in Kalachi village of Akmola region due to sleepy sickness. No radioactive contamination was detected in the territory of Kalachivillage. Established levels of external dose from natural gamma radiation are on average 0.2 μSv/h. In theenvironment (drinking water and surface watercourses) of Kalachi, the content of man-made radionuclides has not been detected, or it is at the level of the background of global precipitation. Content ofnatural radionuclides is typical for the Republic of Kazakhstan. However, studies of basement premisesrevealed an excess of radon concentration of 3-6 times compared to the standards.Key words: radon, gamma radiation, dosimetry, radionuclides, sleeping sickness