About Radon

Radon is an odourless and invisible radioactive gas that can occur in indoor air. Measurement is the only way to find out the radon concentration. This section contains important information about radon.

Radon in Finland

Sources of radon

Radon maps of Finland

Radon at workplaces

Reference levels and regulations

National Action Plan to prevent radon risks

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Order a radon measurement
Report the radon measurement results

Current issues

27.9.2023
Press release

STUK needs more time to assess safety of nuclear waste disposal facility

The Radiation and Nuclear Safety Authority's safety assessment and statement on the operating licence application for spent nuclear fuel will not be completed this year. This is stated in the second tertial supervisory report for 2023

26.9.2023
Press release

STUK assesses the safety of small nuclear power plants together with the French and Czech authorities

The Radiation and Nuclear Safety Authority (STUK), together with the nuclear safety authorities of France and the Czech Republic (SÚJB and ASN), has assessed the safety solutions designed for small nuclear reactors (SMR). The assessment was carried out for the purposes of future licencing procedure...