About STUK

The purpose of the Radiation and Nuclear Safety Authority’s (STUK) operations is to protect people, society, the environment and future generations from the harmful effects of radiation. In this section, you can read about STUK’s operations.

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...