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Information on nuclear waste Radioactive waste means a material, item or structure that contains radioactive substances, has no use and which, due to its radioactivity, must be rendered harmless. Typically, radioactive waste cannot be disposed of;...https://stuk.fi/en/information-on-nuclear-waste
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Nuclear waste management In Finland, nuclear waste is accumulated in the nuclear power plants in Loviisa and Olkiluoto and in the research reactor located in Otaniemi. According to the law, this waste must be managed in Finland, up to and includin...https://stuk.fi/en/nuclear-waste-management
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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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Radioactive waste and discharges Unsealed radioactive sources are used, for example, as tracers or radiopharmaceuticals in health care, research and industry. The handling of unsealed radioactive sources often produces waste containing radioactive...https://stuk.fi/en/radioactive-waste-and-discharges
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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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Nuclear safety STUK supervises nuclear safety in Finland. The license holder is responsible for the safety of nuclear energy use, but STUK sets the safety requirements and oversees their compliance. STUK's supervision includes nuclear facilities, ...https://stuk.fi/en/nuclear-safety
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Nuclear weapons A nuclear weapon is a bomb whose destructive power is mainly based on the pressure wave and thermal radiation created by the explosion. Another threat is radiation from both radioactive substances released by the explosion and neut...https://stuk.fi/en/nuclear-weapons
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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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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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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 in Otaniemi, Espoo, in June 2023. Safety is the absolute startin...https://stuk.fi/en/decommissioning-of-finland-s-first-nuclear-reactor-started
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Reporting on nuclear safety Inspections at the Olkiluoto nuclear power plant STUK carries out inspections to oversee the operation and use of the Olkiluoto nuclear power plant. The periodic inspection programme covers safety management, main opera...https://stuk.fi/en/inspections-at-the-olkiluoto-nuclear-power-plant
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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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Reporting on nuclear safety Inspections at the Loviisa nuclear power plant STUK carries out inspections to oversee the operation and use of the Loviisa nuclear power plant. The periodic inspection programme covers safety management, main operation...https://stuk.fi/en/inspections-at-the-loviisa-nuclear-power-plant
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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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Two decades of learning in the nuclear industry — anniversary of the YJK course The national nuclear safety and nuclear waste management course (YJK) celebrated its 20th anniversary last year. The course, which is conducted annually in co-operatio...https://stuk.fi/en/two-decades-of-learning-in-the-nuclear-industry-anniversary-of-the-yjk-course
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Safety assessment of spent nuclear fuel disposal facility continued Posiva Oy is building an encapsulation and final disposal facility for spent nuclear fuel in Olkiluoto. As this facility is a nuclear plant, the Radiation and Nuclear Safety Autho...https://stuk.fi/en/safety-assessment-of-spent-nuclear-fuel-disposal-facility-continued
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Reporting on nuclear safety International reporting on nuclear safety STUK's international reports on the status and regulatory oversight of Finland's nuclear safety have been compiled on this page. Reporting in accordance with international conve...https://stuk.fi/en/international-reports
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Radiation and Nuclear safety Authority of Finland Radiation and Nuclear Safety Authority’s (STUK) key task is to supervise the use of radiation and nuclear energy in Finland. STUK oversees that all operators comply with the common rules. Our field...https://stuk.fi/en/get-to-know-stuk
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Decommissioning of a nuclear facility When a nuclear facility reaches the end of its service life, measures to decommission the facility are initiated. The measures are aimed at cleaning the nuclear power plant structures and systems of radioactiv...https://stuk.fi/en/decommissioning
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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