29.4.2026 | -

Cooperation with Ukraine strengthened Russia's war of aggression in Ukraine which began in 2022 has changed the country’s radiation and nuclear safety situation. In 2023, the Nordic radiation authorities collaborated extensively to improve the saf...

Cooperation with the African Commission on Nuclear Energy launched In 2022, STUK and the African Commission on Nuclear Energy (AFCONE) started preparing an ambitious programme aimed at strengthening nuclear safeguards in Africa. The five-year prog...

The year 2022 changed the focus of international co-operation STUK's international co-operation is based on its strong expertise in radiation and nuclear safety, security arrangements and nuclear safeguards. The long experience as a supervisory au...

5.3.2026 | -

R&D supports monitoring and preparedness The Radiation Safety Authority (STUK) conducts research and development (R&D) that supports the monitoring of the use of radiation and nuclear energy and preparedness. The implementation of larger R&D proje...

STUK prepares for the arrival of small modular reactors The Radiation and Nuclear Safety Authority (STUK) is preparing for the possibility of building small modular reactors in Finland. In 2023, STUK explored various small modular reactors and the...

STUK employee for more than 30 years: Elina Martikka People stay with the Radiation and Nuclear Safety Authority (STUK) for a long time, and the average career at STUK lasts almost 15 years, indicates STUK's personnel report from last year. Howeve...

STUK promotes several sustainable development goals Since sustainability is built into the operations of the government, it is also an essential part of the operations of the Radiation and Nuclear Safety Authority (STUK) as it carries out its stat...

Director General’s review Like previous years, 2023 was a year of success for STUK. Professional and motivated personnel achieved monitoring and operational objectives as expected. STUK’s work was influenced by the goals of the government programm...

STUK monitors around the clock The Radiation and Nuclear Safety Authority (STUK) maintains continuous preparedness. The system is spearheaded by the expert on call, who generally receives and handles radiation and nuclear safety-related notificati...

Work for a radiation safe Baltic Sea The Baltic Sea has been the subject of intensive radioecological research since the late 1950s. The accident at the Chernobyl nuclear power plant in 1986 further increased the interest in research, as the Balti...

STUK's new website was implemented on time without compromising on quality In May 2023, our new website STUK.fi was published. When designing the website, we studied carefully who it is primarily aimed at and who we specifically want to target, ho...

Cores - Finnish Consortium for Radiation Safety Research Cores is a consortium established by Radiation and Nuclear Safety Authority (STUK) and nine Finnish universities or research institutes. The purpose of Cores is to coordinate and strenghten ...

Professors of Practice instill radiation safety expertise and research in universities Professors of Practice Kari Peräjärvi and Teemu Siiskonen of the Radiation and Nuclear Safety Authority (STUK) strengthen radiation education and research and h...

14.12.2023 | The Radiation and Nuclear Safety Authority in Finland and the Helsinki Institute of Physics have jointly developed new ways of controlling spent nuclear fuel. These innovative methods are needed before the world's first spent nuclear fuel disposal facility can be commissioned in Olkiluoto, Eurajoki.

12.9.2025 | Kalle Heinola Nuclear Data Section | Division of Physical and Chemical Sciences | Department of Nuclear Sciences and Applications | [email protected] Fuusio - nykytila ja mahdollisuudet FUUSIO / Kalle Heinola Tiivistelma Fissio: Fuusio: 32025-09-...

28.11.2023 | The Finnish Radiation and Nuclear Safety Authority will equip a radiation monitoring vehicle for use by the State Nuclear Regulatory Inspectorate of Ukraine. The mobile laboratory will help the radiation and nuclear safety authorities find radioactive substances and objects in the environment. The project, funded by the Ministry for Foreign Affairs of Finland and Nordic partners, is part of broader radiation safety cooperation with Ukraine.

29.4.2025 | Member State Report of Finland as required under Article 14.1 of Council Directive 2011/70/EURATOM 20.8. 2024 Radiation and Nuclear Safety Authority Contents Executive summary ..........................................................................

29.4.2025 | Member State Report of Finland as required under Article 14.1 of Council Directive 2011/70/EURATOM 20.8. 2021 Radiation and Nuclear Safety Authority Contents Executive summary ..........................................................................