Set conditions for the persons involved in the use of nuclear power and study the fulfilment of the conditions;
Give expert assistance to other authorities;
Perform necessary research and participate in the international co-operation;
Refer to decisions and give statements on the base of control.
STUK publishes the regulatory requirements in the form of regulatory guides called YVL guides. The guide YVL 1.1 "STUK as the regulatory authority for the use of nuclear energy"  presents the forms of control and inspections made by the STUK. For a specific inspector the duties are defined in the job description.