At the end of 2019, STUK had 353 employees. STUK’s Director General is Petteri Tiippana. The Director General is appointed by the Government.
STUK’s operations are based on the Act on Radiation and Nuclear Safety Authority. The first section of the Act defines STUK’s mission and position: “The Radiation and Nuclear Safety Authority operates under the Ministry of Social Affairs and Health with the purpose of preventing and limiting the adverse effects of radiation, controlling the safety of the use of radiation and nuclear energy, and engaging in associated research, education and communications.