Particle samples collected by the Radiation and Nuclear Safety Authority (STUK) from the air in Rovaniemi, Kuopio and Imatra in mid-January contained levels of radioactive substances exceeding the detection limit. The concentrations were very low and posed no risk to people or the environment.

The Radiation and Nuclear Safety Authority (STUK) is coordinating the international safety assessment of a Finnish small modular reactor. The project examines how cooperation could facilitate the evaluation of new nuclear facilities.

According to a report by the Radiation and Nuclear Safety Authority, radon concentrations may vary significantly between the dwellings within the same housing company. Radon concentration does not remain constant even in an individual dwelling. Radon prevention in the construction phase of new...