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MELODI workshop on medical radiation, October 27─28, 2025 MELODI workshop on medical radiation, October 27─28, 2025 has been cancelled. The workshop will be postponed until 2026. A new date is being sought. A Multidisciplinary European Low Dose In...https://stuk.fi/en/melodi2025
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Laser performances A permit from the Radiation and Nuclear Safety Authority (STUK) is required for the use of a powerful laser device. The use of a powerful laser device (laser classes 3B and 4) as a lighting effect, in an advertisement, in an art...https://stuk.fi/en/laser-performances
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Contact us Report a radiation safety deviation Serious radiation safety incidents and radiation hazards must be reported by telephone: Radiation and Nuclear Safety Authority, switchboard: 09 759 881 (weekdays 8 a.m.–4:15 p.m.) General emergency nu...https://stuk.fi/en/contact-us
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26.6.2026 | -https://stuk.fi/en/-/international-review-of-finnish-nuclear-power-plant-concept-completed
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30.1.2026 | -https://stuk.fi/en/-/small-amounts-of-radioactive-substances-in-outdoor-air
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4.6.2026 | -https://stuk.fi/en/-/radiation-doses-of-radiation-workers-were-moderate-in-2025
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Aviation In aviation, employees are exposed to cosmic radiation. Cosmic radiation is particle radiation emitted by the sun or from space. If it is possible that the effective dose of cosmic radiation to the aircrew may exceed 1 millisievert (mSv) ...https://stuk.fi/en/aviation
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Ultrasound Ultrasound refers to mechanical waves with frequencies higher than the upper audible limit of human hearing (more than 20 kilohertz). Ultrasound always requires a medium, such as air, liquid, solid or human tissue, to propagate, using p...https://stuk.fi/en/ultrasound
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Sunbeds The most dangerous devices in the home and in beauty care in terms of radiation are sunbeds for tanning the skin. They produce ultraviolet (UV) radiation with which it is possible to tan, and in the worst case, burn skin. A permanent tan a...https://stuk.fi/en/sunbeds
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30.6.2026 | The submission of the Radiation and Nuclear Safety Authority’s (STUK) safety statement and the accompanying safety assessment to the Ministry of Economic Affairs and Employment regarding Posiva’s operating licence application for its spent nuclear fuel disposal facility has been delayed since the end of June.https://stuk.fi/en/-/radiation-and-nuclear-safety-authority-finalising-safety-statement-on-posiva-s-operating-licence-application
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Publications STUK's publications are available in Julkari, the joint open-access publication archive of the Ministry of Social Affairs and Health. STUK's own serial publications and brochures are published there in full, in PDF format. STUK also p...https://stuk.fi/en/publications
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Strategy As climate change, the energy transition, inequality and the tightened global security situation reshape and challenge societies, we must better understand how and in what ways the use of radiation and nuclear energy affects them. We need...https://stuk.fi/en/strategy
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STUK online Find us on social media: Facebook: facebook.com/sateilyturvakeskus Instagram: instagram.com/stuk_fi/ Threads: stuk_fi LinkedIn: linkedin.com/company/stuk YouTube: youtube.com/user/sateilyturvakeskus Hiddenhttps://stuk.fi/en/social-media
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Hiddenhttps://stuk.fi/en/newsletter
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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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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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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
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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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HERCA awareness HERCA's campaign page, where you can find more information about the campaign's themes . Contact us: [email protected] (health care and veterinary medicine) [email protected] (dental X-ray) Hiddenhttps://stuk.fi/en/awareness-campaign
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Olkiluoto 3 The newest nuclear power plant unit in Finland is Olkiluoto 3, which is located in Olkiluoto, Eurajoki, Finland, owned by Teollisuuden Voima Oyj (TVO). STUK has supervised the project from the design of the plant unit through manufactu...https://stuk.fi/en/en/olkiluoto-3