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Safety principles Assurance of nuclear safety is based on general principles that have been formed by experience and research. According to these principles, safety is ensured by so-called defence in depth and multiple arrangements. The aim is to ...https://stuk.fi/en/safety-principles
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Radiation safety deviations The use of radiation should not cause additional, unforeseen exposure to anyone. In spite of anticipation, it is not always possible to prevent additional exposure and this situation is called a radiation safety deviati...https://stuk.fi/en/radiation-safety-deviations
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Applying for a safety licence for the use of radiation The use of radiation is subject to a safety licence granted by the Radiation and Nuclear Safety Authority (STUK). On this page you can find more information on how to apply for a safety licenc...https://stuk.fi/en/apply-for-a-safety-licence-for-the-use-of-radiation
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Anonymized radiation safety deviations On this page STUK publishes anonymized descriptions of the radiation safety incidents that must be reported without delay, the reasons for them, the resolution of the deviations and the measures to prevent si...https://stuk.fi/en/anonymized-radiation-safety-deviations
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Reporting on nuclear safety Valitse kieli Suomi Välj språket Svenska Select language English International reporting on nuclear safety STUK's international reports on the status and regulatory oversight of Finland's nuclear safety have been compil...https://stuk.fi/en/international-reports
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Reporting on nuclear safety Valitse kieli Suomi Välj språket Svenska Select language English Inspections at the Olkiluoto nuclear power plant STUK carries out inspections to oversee the operation and use of the Olkiluoto nuclear power plant. The p...https://stuk.fi/en/inspections-at-the-olkiluoto-nuclear-power-plant
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Reporting on nuclear safety Valitse kieli Suomi Välj språket Svenska Select language English Inspections at the Loviisa nuclear power plant STUK carries out inspections to oversee the operation and use of the Loviisa nuclear power plant. The perio...https://stuk.fi/en/inspections-at-the-loviisa-nuclear-power-plant
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Regulatory Guides on nuclear safety and security (YVL) Authorisation According to Section 7 r of the Nuclear Energy Act (990/1987), the Radiation and Nuclear Safety Authority (STUK) shall specify detailed safety requirements concerning the impleme...https://stuk.fi/en/yvl-guides
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19.1.2026 | -https://stuk.fi/en/-/authorities-from-five-countries-assess-the-safety-of-a-finnish-nuclear-power-plant-concept
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Trade, import and export of radioactive materials and consumer products The Radiation and Nuclear Safety Authority supervises the trade in radioactive substances as well as their import to Finland and export from Finland. Import and export is also...https://stuk.fi/en/trade-of-radioactive-materials
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Cooperation STUK supervises and develops Finland’s radiation safety in co-operation with domestic and foreign partners. Important domestic partners include, for instance, different ministries: the Ministry of Social Affairs and Health in matters r...https://stuk.fi/en/networks-and-co-operations
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The International Nuclear and Radiological Event Scale INES Much attention has been paid to the communication of nuclear and radiological events since the Chernobyl accident. INES, the International Nuclear and Radiological Event Scale, has contri...https://stuk.fi/en/the-international-nuclear-and-radiological-event-scale-ines
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What could threaten Finland? Impacts of a radiation accident can only affect a large area if large amounts of radioactive gases and particles are released into the air. Depending on the weather conditions, a serious nuclear power plant accident in...https://stuk.fi/en/what-could-threaten-finland-
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40 years since Chernobyl accident A serious nuclear accident occurred at the Chernobyl Nuclear Power Plant, located in what is now Ukraine, on April 26, 1986. The accident began with a test of experimental equipment, which led to a loss of control...https://stuk.fi/en/40-years-since-chernobyl-accident
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Radiation in appliances Electromagnetic fields from home, school and office equipment There are electric and magnetic fields in the vicinity of electrical appliances and wires in the home, school and office. Due to their low voltage, the electric ...https://stuk.fi/en/radiation-in-consumer-products-and-appliances
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Laser Lasers are now widely used in our everyday lives. They can be found at home, at work and are used for a wide range of applications. Lasers are a valuable scientific tool in materials, pharmaceutical and forensic science, and play an importan...https://stuk.fi/en/laser-products
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The radioactivity of building materials and ash Radiation exposure from building materials The radiation exposure arising from construction products is examined if the radiation exposure is suspected to be higher than the reference level The refer...https://stuk.fi/en/the-radioactivity-of-building-materials-and-ash
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Obligation to report exposure to natural radiation Industrial practices which cause exposure to natural radiation and in which the exposure caused by natural radiation may be higher than the reference level have the obligation to investigate the e...https://stuk.fi/en/obligation-to-report-exposure-to-natural-radiation-norm
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28.4.2026 | Convention on Nuclear Safety 10th Review Meeting – 2026 Country Review Report for FINLAND Drafted by Country Group 1 Bosnia and Herzegovina, Croatia, Czech Republic, Egypt, Finland, France, Iraq, Ireland, Japan, Latvia, Lebanon, Luxembourg, Paragu...https://stuk.fi/documents/150192312/154500381/FINAL_FINLAND_Country_Review_Report_10th_Review_Meeting_FI1.pdf
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Fees of STUK's services and General terms of delivery STUK produces expert services for its industry to order. Prices for standard services can be found in the price list. Measurement, determination, and similar prices include only the production ...https://stuk.fi/en/fees-for-stuk-s-services-and-general-terms-of-delivery