Location radon
The radon is generated in the subsoil, ascends to the area and it enters the interior of the edifications depending on the type of construction, are already housing or workplaces .
The gas radon, when being denser than the air, once in the interior of the building tends to to accumulate in undergrounds and ground floors.
The Nuclear Safety Council (CSN) offers the map of the potential of radon with areas of Spain of priority activity, those with potential of radon higher than 300 Bq/m3:
Priority activity municipalities
The CSN has defined as municipalities activity priority qualifiers as an area II for the appendix B of the section DB HS-6 of the Technical Building Code. In them, the presence of radon can arrive at be high in the interior of buildings that they have not been built with proper measures.
The companies located at these municipal districts must carry out measurements of radon in the ground floors and basements of its work centres.
Enquiry the list of Zone II municipalities: Willingness 18528 of the BOE number. 311 of 2019