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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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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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Participants AURORad is a broad European partnership combining the organisations needed to move from recommendations to practical implementation. Consortium profile The consortium comprises 109 organisations from 29 European countries. It includes...https://stuk.fi/en/aurorad-project/participants
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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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Introduction AURORad turns European cooperation on medical radiation protection into practical improvements for patients, professionals and health systems. Why AURORad is needed Medical uses of ionising radiation are essential to modern healthcare...https://stuk.fi/en/aurorad-project/introduction
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Job vacancies Interested in working at STUK? Take a look at our current job vacancies! Information about all current job vacancies at STUK is available on the Valtiolle.fi website . The list of vacancies below shows the positions that are currentl...https://stuk.fi/en/vacancies
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Construction of a nuclear facility Following the decision-in-principle, the party in charge of the project must apply for and be granted the Government’s licence to construct the nuclear facility. In connection with the construction licence, the a...https://stuk.fi/en/construction
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Radon mitigation Radon mitigation can easily reduce radon concentration in indoor air. The most effective mitigation methods are sub-slab suction and a radon well. Before starting the mitigation, it is important to check that the ventilation is wo...https://stuk.fi/en/radon-mitigation
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Base stations Operation and placement of base stations Data communication between the mobile phone and the base station is carried out using radio waves. The call or other information is transmitted from the mobile phone as a radio wave to the nea...https://stuk.fi/en/base-stations
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Staff Report In 2025, the Radiation and Nuclear Safety Authority (STUK) continued its long-term efforts to ensure staff competence and well-being. The number of employees grew almost 4%, reaching 323 by the end of the year. STUK is characterised b...https://stuk.fi/en/staff-report
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Current issues We are publishing press releases and news articles on topical radiation and nuclear safety issues on this section of our website. Press releases RSS (Opens New Window) (Opens New Window) 3.9.2026 Press release IAEA Press Release: IA...https://stuk.fi/en/current-issues
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Work Packages Eleven connected work packages combine project coordination, communication, evaluation and sustainability with seven technical areas. Core work packages Work Packages 1–4 provide the common foundation for AURORad. They coordinate the...https://stuk.fi/en/aurorad-project/work-packages
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Nuclear material Nuclear materials refers to nuclear materials, which include uranium, plutonium and thorium, as well as other nuclear materials, equipment, installations, data materials and agreements, if they are relevant in terms of the spread ...https://stuk.fi/en/nuclear-materials
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Radiation measurements In a radiation hazard situation, radiation measurements aim to obtain as good a picture as possible of the radiation situation and its development. For example, if there was a serious accident at a nuclear power plant, the n...https://stuk.fi/en/radiation-measurements
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Sealed sources Sealed sources are radioactive sources containing radioactive material that has been encapsulated in a solid, impenetrable capsule, preventing the radioactive material from spreading to its surroundings. From a sealed source the rad...https://stuk.fi/en/sealed-sources