RADON MEASUREMENT IN DWELLINGS AROUND THE HOT-SPRING IN THE NORTH-WEST OF IRAN

Passive radon measurement method was employed in order to determine ra don activity concentrations in dwellings (mostly guest-houses) around the hot springs in the north west of Iran. The measurements were carri ed out during winter for a period of 2.5 months. Our results show that the radon levels in majority of dwellings have been higher than 100Bq /m3 and in two cases exceeded the limitation value recommended by ICRP for future homes (i.e 200Bq/m3). It is important to mention here that during the course of this measurement there happened an earthquake in the region which may have had some effect on the results.