Reasons for Elevated Radon Levels Inside the Building in Divača

Abstract

A radon (222Rn) survey at a workplace in a public building in the town of Divača, Slovenia, showed radon concentrations as high as 20,000 Bq m-3, with average values of 9020 Bq m-3 in winter and 2890 Bq m-3 in summer. The main radon source is an under-floor channel connecting rooms on the ground floor. Elevated radon levels at the site are possibly related to a fracture zone connected to a nearby fault.