… (RL) vary in different countries due to differences in regional levels of indoor radon and
usually range from 100 to 300 Bq m −3 . However, a reliable decision as to the compliance of …

… The obtained results are compared with the indoor radon levels prescribed by the
International Commission on Radiation Protection and are found to be less than the action level …

… The radon concentration levels found in this study are below the action level recommended
… shows low indoor radon concentration (ie below the US EPA action limit). The average …

… results of radon concentration in schools cannot be applied directly for the estimation of radon
… an extended survey of indoor radon in homes for at least one region in Northern Greece. …

… of the factors which affected the indoor radon concentration levels. The school buildings
were … Moreover, classrooms with radon concentration levels above the EC action levels were …

… correlation between indoor and soil gas radon concentrations … as an indicator of potential
indoor radon concentrations and … have an indoor radon concentration above the action level. …

… levels of indoor radon concentrations can be comparable to those in underground mines led
to the boom in radon … radon concentrations above the action level took action to reduce the …

… In schools, the radon levels are found to vary from 31 – 400 Bq m −3 with an … radon
concentration levels in 83% of the investigated dwellings are lower than the indoor radon action level …

… dwellings the indoor radon activity concentration values lies in the range of action level (200–300
Bq m −3 ) recommended by the ICRP. The annual average indoor radon concentration …

… own action level for indoor radon to reduce radon lung cancer risk. As a health concern like
indoor environment, radon … Different countries put different action levels at dwellings; Table 2 …