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Radiation today In this section you can find latest results on external radiation around Finland. The map displays about 255 external dose rate monitoring stations. The map can be moved and zoomed. Click on the map points to see local rates. The r...https://stuk.fi/en/radiation-today
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Radon maps of Finland The radon maps of Finland are based on measurements conducted in low-rise residential buildings by STUK and Sustera Radon Consulting Oy, using radon measurement detectors. The first radon map shows the medians of radon concen...https://stuk.fi/en/maps-of-radon-in-finland
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Prerequisites for a safety licence On this page you will find information on the obligations of all undertakings with regard to the safe use of radiation. Safety assessment concerning a radiation practice In practices subject to a safety licence, ...https://stuk.fi/en/prerequisites+for+a+safety+licence
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Subscribe news articles With the form below, you can subscribe to the Radiation and Nuclear Safety Authority's (STUK) latest press releases, news, and blog posts. Choose from the form below which of STUK's published articles you would like to rece...https://stuk.fi/en/subscribe-stuk-s-news-articles
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STUK supervises radiation practices The Radiation and Nuclear Safety Authority (STUK) supervises the safety of the use of ionising radiation and other radiation practices. The supervision consists of inspections of the radiation facility and other...https://stuk.fi/en/stuk-supervises-radiation-practices
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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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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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Abnormal events related to radiation The Radiation and Nuclear Safety Authority (STUK) has plans for a radiation hazard situation, and the measures necessary in the event of an emergency are regularly practised. STUK's expert on call receives all ...https://stuk.fi/en/abnormal-events-related-to-radiation
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STUK's measurement and calibration services subject to a charge The Radiation and Nuclear Safety Authority (STUK) provides companies and private citizens with various radiation-related measurement, calibrations and expert services. Measurement of ...https://stuk.fi/en/stuk-s-measurement-and-calibration-services
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The Posiva encapsulation plant and final disposal facility Posiva Oy (Posiva) will soon start operating an encapsulation plant and final disposal facility for spent nuclear fuel in Olkiluoto, Eurajoki. The facility will be used for the packaging a...https://stuk.fi/en/final-disposal-facility
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Peaceful use of nuclear energy The aim of international safeguards is to ensure that nuclear materials are not diverted from peaceful uses to nuclear explosive devices and that activities do not contribute to nuclear proliferation. It is based on ...https://stuk.fi/en/peaceful-uses-of-nuclear-energy
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Electricity networks generate electric and magnetic fields Electricity is transmitted from power plants to consumers through the electricity networks. They consist of various electrical lines and cables, substations and distribution substations, a...https://stuk.fi/en/electrical-networks-and-power-lines
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Regulatory oversight of nuclear safety Regulatory oversight of nuclear safety and security is based on the obligations and responsibilities set out in the Nuclear Energy Act (990/1987). The licensee must ensure safety, and STUK confirms through it...https://stuk.fi/en/regulatory-oversight-of-nuclear-safety
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Radiation protection training and qualifications In order to use radiation and nuclear energy and carry out other work involving exposure to radiation safely, everyone involved in the operations must have the necessary know-how. All employees must...https://stuk.fi/en/radiation-protection-training
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Beauty care and sunbed services Non-ionizing radiation is used in sunbeds and many beauty care devices. It is important that the operators are familiar with the characteristics of the devices they use, the risks associated with the use of radiatio...https://stuk.fi/en/beauty-care-and-sunbed-services
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Final disposal of nuclear waste Many countries that use nuclear energy have disposal facilities for low- and intermediate-level nuclear waste. However, no country has yet started operating a final disposal facility for high-level waste disposal. I...https://stuk.fi/en/final-disposal-of-nuclear-waste
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Radon concentration during working hours In workplaces, ventilation is often scheduled according to working hours, for example at nights and weekends, ventilation is set at a lower level or switched off completely. In this case, radon levels tend ...https://stuk.fi/en/radon-concentration-during-working-hours
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Shade in outdoor areas provides effective protection from UV radiation Promoting sun protection is part of promoting the well-being and health of citizens and society as a whole. An easy way to promote sun protection is to add shade to outdoor rec...https://stuk.fi/en/shade-protects-against-uv-radiation
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Fukushima nuclear power plant accident The Fukushima Dai-ichi nuclear power plant located on the east coast of Japan was severely damaged on 11 March 2011, and radioactive substances were released for several days into the sea and the area surroun...https://stuk.fi/en/fukushima-nuclear-power-plant-accident
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Analysis of minor radiation safety deviations In 2024, the Radiation and Nuclear Safety Authority received slightly over 2,000 notifications from health care units conducting X-ray examinations concerning cases in which the use of radiation in X-r...https://stuk.fi/en/analysis-of-minor-deviations
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Valitse kieli Suomi Välj språket Svenska Select language English 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 Radiati...https://stuk.fi/en/stuk-promotes-several-sustainable-development-goals
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For the user of radiation On these pages we have compiled information for professional users of radiation. Prerequisites for a safety licence STUK supervises radiation practices Radiation safety deviations Radiation protection training and qualifi...https://stuk.fi/en/for-the-user-of-radiation
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Valitse kieli Suomi Välj språket Svenska Select language English A year of developing preparedness The Radiation and Nuclear Safety Authority (STUK) maintains and develops its continuous preparedness to respond to various radiation hazards and pre...https://stuk.fi/en/a-year-of-developing-preparedness
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Radioactivity in the Baltic Sea Finland has been a forerunner in the monitoring of radioactivity in the Baltic Sea. Radioactivity surveys were initiated as early as the end of the 1950s by the Radiation and Nuclear Safety Authority’s (STUK) predec...https://stuk.fi/en/radioactivity-in-the-baltic-sea
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Prerequisites for a safety licence On this page you will find information on the obligations of all undertakings with regard to the safe use of radiation. Safety assessment concerning a radiation practice In practices subject to a safety licence, ...https://stuk.fi/en/prerequisites-for-a-safety-licence
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Nuclear tests in the atmosphere Fallout from past nuclear tests is still detected in Finnish nature. Altogether 512 nuclear tests have been performed in the atmosphere at a number of sites. Most of these tests took place between 1945 and 1963. The...https://stuk.fi/en/nuclear-tests-in-the-atmosphere
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Instructions for members of the public If the situation requires immediate protection, people are warned with a general emergency signal, which is a continuous acoustic signal, ascending and descending. In addition, the public will be warned by me...https://stuk.fi/en/instructions-for-members-of-the-public
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Studies after the Fukushima accident Following the Fukushima Dai-ichi nuclear power plant accident in March 2011, a number of studies were launched on how the lessons learned from the accident should be taken into account in improving the safety o...https://stuk.fi/en/studies-after-the-fukushima-accident
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Workplace radon concentrations in Finland Indoor radon levels may vary greatly even within one postal code area. In addition, the way the house is built affects the radon concentration. Search the regional workplace radon measurement data The sear...https://stuk.fi/en/workplace-radon-concentrations-in-finland
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Valitse kieli Suomi Välj språket Svenska Select language English Radiation measurement data for 2024 The Radiation and Nuclear Safety Authority (STUK) provides companies and private citizens, among others, with various radiation-related measuremen...https://stuk.fi/en/radiation-measurement-data-for-2024
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Regulatory oversight of nuclear facilities STUK oversees the Loviisa and Olkiluoto nuclear facilities and Posiva's encapsulation and final disposal facilitys of spent nuclear fuel. In addition, STUK supervises the decommissioning of VTT’s research...https://stuk.fi/en/regulatory-oversight
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International reviews of STUK’s operations The IRRS review every ten years The Integrated Regulatory Review Service (IRRS) by the International Atomic Energy Association (IAEA) focuses mostly on supervision activities and accident preparedness of ...https://stuk.fi/en/international-reviews-of-stuk-s-operations
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Fees for radiation practices regulation The content of this page is available in Finnish and Swedish. If you have any inquiries please contact [email protected] Hiddenhttps://stuk.fi/en/fees-for-radiation-practices-regulation
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The content of this page is only in Finnish and Swedish. If you have any inquiries please contact us at [email protected] . Hiddenhttps://stuk.fi/en/about-radon-regulation-in-general
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Sheltering indoors reduces radiation exposure People should take cover indoors for the time it takes for the radioactive plume to pass. The ventilation must be turned off and the ventilation openings sealed as far as possible. Staying indoors prot...https://stuk.fi/en/sheltering-indoors-reduces-radiation-exposure
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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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Ultraviolet radiation causes skin cancer Excessive exposure to ultraviolet (UV) radiation can cause health problems. Skin can burn, age prematurely and the risk of skin cancer is increased. UV radiation can also damage the eyes. UV radiation also ...https://stuk.fi/en/ultraviolet-radiation-causes-skin-cancer
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Actions in a radiation hazard situation Instructions for members of the public in the event of a radiation hazard situation Instructions Information sources for members of the public Finland has never had a radiation hazard situation in which ther...https://stuk.fi/en/actions-in-a-radiation-hazard-situation
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Valitse kieli Suomi Välj språket Svenska Select language English STUK's finances and personnel in 2022 STUK's operations are net-budgeted, which means that part of the expenditure is covered by the agency's own supervisory and service revenue. In ...https://stuk.fi/en/stuk-s-finances-and-personnel-in-2022
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Preventing health effects of radiation The health effects of radiation can be divided into direct health effects and stochastic late effects. Direct effects are obvious side effects, such as tissue damage due to extensive cell damage. Stochastic e...https://stuk.fi/en/preventing-health-effects-of-radiation
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Types of nuclear power plants Over the past decades, a wide range of different types of nuclear power plants have been designed and built around the world, but only a few have reached large-scale commercial operation. The most common reactor types...https://stuk.fi/en/types-of-nuclear-power-plants
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Valitse kieli Suomi Välj språket Svenska Select language English Happy officials express their views The Radiation and Nuclear Safety Authority has flexible working practices. You can work remotely, in the office and from different locations. Flex...https://stuk.fi/en/happy-officials-express-their-views
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Radioactivity in sold natural produce With regard to radiation dose, the most important food categories are natural produce and drinking water. The Radiation and Nuclear Safety Authority (STUK) monitors the radioactivity of food on sale by taking ...https://stuk.fi/en/radioactivity-in-sold-natural-produce
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Measurement methods and delivery times The delivery times indicated for all measurement methods are indicative and not binding on STUK. The delivery time of the results depends on the number and urgency of STUK's regulatory supervision tasks at th...https://stuk.fi/en/measurement-methods-and-delivery-times
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Report a radiation safety deviation The content of this page is available in Finnish and Swedish. If you have any inquiries please contact us at [email protected] Hiddenhttps://stuk.fi/en/report-a-radiation-safety-deviation
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Radiation safety of nuclear facilities Control of radiation safety is a part of the supervision of the operating condition of a nuclear power plant. The objective is to ensure that the total radiation exposure caused by the operation of the nuclea...https://stuk.fi/en/radiation-safety-of-nuclear-facilities
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Taking care of nuclear waste The principled alternatives for taking care of nuclear waste are often summarised by following three choices The ‘ delay and decay ’ approach, i.e. storing the waste until its activity level has dropped below the exemp...https://stuk.fi/en/taking-care-of-nuclear-waste
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Valitse kieli Suomi Välj språket Svenska Select language English Intensive year of supervision in Olkiluoto The year 2022 was a significant year for the Olkiluoto 3 plant unit (OL3). STUK supervised the plant through inspection visits, monitoring ...https://stuk.fi/en/intensive-year-of-supervision-in-olkiluoto
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Monitoring of radioactivity in household water The municipal health protection authority monitors the radioactivity of household water in accordance with Decrees 401/2001 and 1352/2015 of the Ministry of Social Affairs and Health. Decree 401/2001 ...https://stuk.fi/en/monitoring-of-radioactivity-in-household-water
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Valitse kieli Suomi Välj språket Svenska Select language English 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 nuclea...https://stuk.fi/en/r-d-supports-monitoring-and-preparedness
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Hanhikivi nuclear power plant project The Hanhikivi 1 project was a nuclear power plant commissioned by the Finnish energy company Fennovoima to be built on the Hanhikivi peninsula in the municipality of Pyhäjoki. If realised, Hanhikivi 1 would ha...https://stuk.fi/en/hanhikivi-nuclear-power-plant-project
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Chernobyl nuclear power plant accident On 26 April 1986, a nuclear power plant accident occurred in Chernobyl, present Ukraine. The accident contaminated large areas in Ukraine, Belarus, and Russia with various radioactive substances. People and s...https://stuk.fi/en/chernobyl-nuclear-power-plant-accident
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Occupational radiation exposure and health surveillance The protection of radiation workers involves various measures, depending on the work tasks. These include the monitoring of exposure conditions, individual dose monitoring, health checks and ...https://stuk.fi/en/occupational-radiation-exposure
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Waste containing naturally occurring radioactive substances Waste containing naturally occurring radioactive substances is not radioactive waste as defined in the Radiation Act (859/2018) but waste as defined in section 78, subsection 3 of the Act...https://stuk.fi/en/waste-containing-naturally-occurring-radioactive-materials
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Information for sunbed service providers The use of sunbeds is prohibited for children under 18 years of age. In addition, according to the Radiation Act, each sunbed site shall have a designated responsible person who is always present when the s...https://stuk.fi/en/information-for-professionals-in-the-sunbed-services
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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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Valitse kieli Suomi Välj språket Svenska Select language English Decommissioning of Finland’s first nuclear reactor started Dismantling work related to the decommissioning of VTT Technical Research Centre of Finland' s FiR 1 research reactor began...https://stuk.fi/en/decommissioning-of-finland-s-first-nuclear-reactor-started
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Issuing authorizations for dealing with STUK The content of this page is available in Finnish and Swedish. If you have any inquiries please contact us at [email protected] . Hiddenhttps://stuk.fi/en/issuing-authorizations-for-dealing-with-stuk
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19.7.2022 | Together with the Swedish and Norwegian radiation safety authorities, the Finnish Radiation and Nuclear Safety Authority will send measuring equipment to the Chornobyl plant area for monitoring the radiation doses of employees and environmental radiation. The total value of the support is approximately EUR 360,000. The new measuring equipment will be delivered to the area by the end of 2022.https://stuk.fi/en/-/the-finnish-radiation-and-nuclear-safety-authority-will-send-measuring-equipment-to-the-chornobyl-plant-area-together-with-the-norwegian-and-swedish-authorities
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Information sources for members of the public In the event of a radiation hazard situation, follow the authorities' communications and operating instructions from the radio, TV and website. Sirens can be used to give a general warning signal, and ...https://stuk.fi/en/information-sources-for-members-of-the-public