About Radon

Radon is an odourless and invisible radioactive gas that can occur in indoor air. Measurement is the only way to find out the radon concentration. This section contains important information about radon.

Current issues

The Radiation and Nuclear Safety Authority (STUK) has published an annual review of its 2023 operations. The review collects highlights and case examples of STUK's activities and achievements last year.

About 40 experts from the Radiation and Nuclear Safety Authority (STUK) supervised the first annual maintenance of unit 3 of Teollisuuden Voima Oyj (TVO)'s Olkiluoto nuclear power plant. According to STUK's findings, the annual maintenance was carried out safely. TVO prioritized safety in its decision-making...