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Published on: April 12, 2017
RADON MEASUREMENTS IN KINDERGARTENS IN URAL REGION (RUSSIA)
A Onishchenko1, G Malinovsky1, A Vasilyev1
1Institute of Industrial Ecology UB RAS, Sophy Kovalevskoy St., 20, 620990 Ekaterinburg, Russia.
Abstract:
The radon survey of kindergartens has been conducted in Sverdlovskaya oblast during 2013-16. Indoor radon concentrations have been measured in 180 kindergartens in 21 villages and 10 towns. The LR-115 nuclear track detectors were placed in 560 rooms (three or four rooms per kindergarten) during 2-3 months. To obtain annual values, radon measurements were carried in the cold and warm seasons. The arithmetic and geometric means of annual indoor radon concentrations in rooms are 59 and 42 Bq/m3 respectively, GSD = 2.33. Analysis of the building factors affecting radon entry is presented. The detailed radon survey was performed in one kindergarten where exceeding of national action radon level was observed.
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