The service commitment statement for radon determination is designated for entities providing these services. Mota-Engil ATIV demonstrates competence in diagnostic monitoring and radon efficacy using passive detectors in indoor air of buildings and commits to meeting the requirements outlined in the guide developed by the APA.
Radon is a naturally occurring radioactive gas, colorless and odorless, and, according to the World Health Organization, the largest source of ionizing radiation exposure for the global population. It has been classified by the International Agency for Research on Cancer since 1988 as a Group 1 carcinogenic agent.
Radon monitoring in workplace air is an obligation of the employer, as stated in Article 147 of Decree-Law No. 108/2018 of December 3. Article 146 establishes the requirement for employers to ensure that radon activity concentration in the workplace is as low as reasonably possible and below the reference level (300 Bq/m³).
In high susceptibility areas, or in workplaces with specific characteristics, the monitoring frequency should not exceed 12 months. In low or moderate susceptibility areas, it is recommended that monitoring be carried out every five years.
Employers affected must, within three years after the entry into force of the PNRn (i.e., by 12/29/2025), monitor radon levels (Rn) in their facilities.
The National Radon Plan (PNRn) identifies susceptibility areas through a map and a list of parishes (Radon Susceptibility Map | Portuguese Environment Agency (apambiente.pt)).
