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 helped Russia improve the safety of their nuclear power plants for thirty years from the beginning of the 1990s. This cooperation ended following Russia’s invasion of Ukraine. History researcher Petri Paju has report...

Fortum Power and Heat has completed this year’s annual outage of the Loviisa nuclear power plant. The Radiation and Nuclear Safety Authority supervised that the annual outage work was carried out safely and in accordance with provisions