[Radon and its decay products in the air of preschool institutions of Serpukhov].

The article deals with some methodic recommendations associated with examination of "radon" factor in preschool institution buildings. The recommendations result from analysis of general and selected studies that covered preschool institution buildings varying in length of service in Serpoukhov town of Moscow region in 1993-1994. The examinations were carried out by Serpoukhov State Center for Sanitary and Epidemiologic Supervision in accordance with Regulation Document No 5789-91. In order to reveal the buildings with higher possible occurrence of maximal allowable concentrations of radon and its derivatives, as the studies proved, the examinations in the region are expedient in the summer morning hours.