Indoor radon levels in workplaces of Adapazarı, north-western Turkey

ries were found to be 66, 76 and 27 Bq/m 3 , respectively, with an outdoor concentration of 14 Bq/m 3 .T he average concentrations were found to decrease as follows for different types of industries: automotive > electronic > metal > textile. Because the maximum measured radon concentrations are 151 Bq/m 3 in the schools, 173 Bq/m 3 in the offices and 52 Bq/m 3 in the factories, the limits of ICRP are not exceeded in any of the buildings in the region. In addition, the estimated mean annual effective doses to the people in the workplace, students, office workers and factory workers have been calculated as 0.27, 0.63 and 0.20 mSv/y, respectively for the region.