Radon is a radioactive inert gas that is formed when uranium decays. Norway is among the countries in the world where indoor radon reaches its highest concentrations. The NRPA has a public responsibility for radon, and research work and studies are conducted in fields dealing with this theme.

Radon is a radioactive inert gas that is formed when uranium decays. Norway is among the countries in the world where indoor radon reaches its highest concentrations. About 10 per cent of Norway's housing stock has a radon concentration higher than 200 Bq/m³. In the great majority of cases the ground beneath buildings is the main source of elevated radon levels.