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Legally decreed radon testing zones in Finland, the Finnish Radiation and Nuclear Safety Authority

Yli 200 becquereliä kuutiometrissä pitoisuudet kunnittain.

Figure 1. Concentrations higher than 200Bq/m3 per municipality. (Source: STUK)

 

According to section 45 of the Radiation Act 592/1991 and the ST12.1/ 2.2.2011 guidelines, all operators in high-risk radon zones must have radon testing performed. Places of work, public facilities, schools and pre-schools, hospitals, care homes, religious facilities as well as sports, club and other recreational facilities are legally required to have radon testing performed. Radon testing for private and vacation homes is not compulsory, but it is highly recommended.

 

Operators in high-risk zones must assess exposure to radon 

Asikkala, Askola, Enontekiö, Hamina, Hattula, Hausjärvi, Heinola, Hollola, Humppila, Hyvinkää, Hämeenlinna, Iitti, Imatra, Janakkala, Järvenpää, Kajaani, Kangasala, Kauniainen, Kitee, Kittilä, Kivijärvi, Kolari, Kotka, Kouvola, Kuhmoinen, Kärkölä, Lahti, Lapinjärvi, Lappeenranta, Lemi, Lempäälä, Loppi, Loviisa, Luhanka, Luumäki, Miehikkälä, Myrskylä, Mäntsälä, Nokia, Orimattila, Padasjoki, Parikkala, Pornainen, Porvoo, Pukkila, Pyhtää, Pälkäne, Riihimäki, Ruokolahti, Ruovesi, Savitaipale, Sodankylä, Taipalsaari, Tammela, Tampere, Tohmajärvi, Valkeakoski, Virolahti, Ylöjärvi

 

 Radon gases are present in ridge areas throughout Finland

  kartta radonalue

Figure 2. Ridge areas in Finland

 

Exposure to radon must be assessed at places of work located in ridge areas and in other areas with highly permeable sand and gravel formations. Operators throughout Finland are responsible for radon threshold limits not being exceeded. Working hours in respect to levels of radon have been determined by the Finnish Radiation and Nuclear Safety Authority (STUK) (ST 12.1)

N.B. Ridge areas may have higher concentrations of radon in the summer when the soil is thawed. It is therefore sensible to perform radon analyses for homes in these areas in the summer as well as winter. 

 

All underground facilities throughout Finland carry the risk of radon:

 

Radonmaanalla

Radon testing must be performed for all underground work facilities in permanent use. This decree set by the Finnish authorities must be observed throughout Finland.

Levels of radon in mines and at underground excavation sites should me regularly monitored.

 

Legally decreed radon testing at places of work is overseen by the Regional State Administrative Agencies (AVI), industrial safety administration and the Finnish Radiation and Nuclear Safety Authority (STUK). Radon testing at places of work is always implemented as part of occupational health and safety to ensure a safe environment for employees and others using the facilities.

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