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Radioactivity in milk The monitoring programme produces information on the radioactivity levels in milk and the radiation exposure caused to humans by milk consumption. The dairies included in the radiation monitoring programme have been selected ...https://stuk.fi/en/radioactivity-of-milk
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Services and guidance You can use this website to contact us if you need a safety permit for the use of radiation or if you need measurement and calibration services, for example. You will also find instructions on how to do this and information o...https://stuk.fi/en/services-and-guidance
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Data protection at STUK Data protection involves the protection of personal data and its processing in accordance with law. Everybody possesses the right to their personal data and everybody has the right to protection of their personal data. In i...https://stuk.fi/en/data-protection-at-stuk1
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Research reactor in Otaniemi Finland's first nuclear reactor was commissioned in Otaniemi, Espoo, in 1962. The research reactor was decommissioned in 2015, and ten years later, the facility was released from STUK's regulatory oversight. The FiR 1 ...https://stuk.fi/en/research-reactor-in-otaniemi
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Radioactivity of household water Artificial radioactivity in household water intended for human consumption is monitored in order to assess the internal radiation exposure of humans caused by household water. The cesium-137 (Cs-137) and strontium-...https://stuk.fi/en/radioactivity-of-drinking-water
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Natural background radiation Naturally-occurring radioactive materials are an inherent part of our living environment. The ground below our feet and the concrete or brick walls around us emit radiation. We are exposed to radiation from space every...https://stuk.fi/en/natural-background-radiation
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Valitse kieli Suomi Välj språket Svenska Select language English STUK’s Finances 2024 In 2024, STUK’s operating expenses were approximately EUR 41 million. Approximately 45% (EUR 18.5 million) of operational funding came from the Government’s budg...https://stuk.fi/en/stuk-s-finances-2024
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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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Nuclear facility operations Regulatory oversight during the operation of the nuclear facility includes continuous safety assessments. By conducting supervision during operation, STUK aims to ensure that the nuclear facilities are and will remain i...https://stuk.fi/en/nuclear-facility-practices
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Veterinary X-ray practices The purpose of the guidelines is to facilitate the interpretation of radiation legislation and, thereby, to promote radiation safety in practice. The guidelines are not binding as such, but they reflect STUK's view on ho...https://stuk.fi/en/veterinary-x-ray-practices
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Olkiluoto nuclear power plant The three nuclear power plant units located in Olkiluoto, Eurajoki, are owned by Teollisuuden Voima Oyj (TVO). Olkiluoto 1 was taken into commercial use in 1979 and Olkiluoto 2 in 1982. In terms of its type, the Olkil...https://stuk.fi/en/olkiluoto-nuclear-power-plant
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Operation of a nuclear facility When the nuclear facility is completed, the facility still has to apply for an operating permit from the Government. The operating permit is granted for a limited period of time, and its extension requires a safety ...https://stuk.fi/en/operation
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Calculation tools Although in most cases measurement is the best way to determine the radiation dose rate or radiation dose, there are situations where calculation methods are more suitable or can replace measurement. Below is a list of calculatio...https://stuk.fi/en/calculation-tools
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Inspection organisations STUK authorises inspection organisations to inspect pressure equipment, other mechanical equipment as well as steel and concrete structures for nuclear facilities. Operation of STUK-approved inspection organisations is sub...https://stuk.fi/en/inspection-organisations
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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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Depleted uranium Depleted uranium is a by-product of the production of uranium fuel used in nuclear power plants. It is used, for example, in aircraft counterweights and in the keels of sailboats. In addition, depleted uranium is used in munitions...https://stuk.fi/en/depleted-uranium
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Hiddenhttps://stuk.fi/en/public-notifications
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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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STUK Regulations The Radiation and Nuclear Safety Authority's regulations are issued under the Radiation Act (859/2018) and the Nuclear Energy Act (990/1987). The regulations of the Radiation and Nuclear Safety Authority specify the provisions of ...https://stuk.fi/en/stuk-regulations
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Working at STUK We employ over 300 people. We are experts in many different fields, but we all work together to achieve the shared goal – radiation safety. The purpose of all our activities is to protect people, society, the environment and future...https://stuk.fi/en/stuk-as-a-workplace