About Radon - The structure of human radiation exposure - The most powerful source of natural radiation

To ensure the radiation safety of the building, information is used both about the potential radon hazard of the soil at the construction site, and about the radiation quality of building materials. [...] ii) the use of waterproofing coatings and films with a low diffusion coefficient of radon in the construction of the basement and flooring of the ground floor, iii) sealing of engineering communications in the underground part of the building, iv) during the construction of the foundation, laying of material with high air permeability or drainage channels into the ground to enable ventilation, if. [...] A review of the evolution of the radon measurement protocols in homes in the USA, from 1993 (EPA, 1993, 1997) to the present time (ANSI/AARST MAH, 2014), shows that the quality assurance regulates only the uncertainty associated solely with the procedure for measuring the radon activity concentration. [...] The measurement procedure consists of three steps: (a) regeneration of activated charcoal and preparation of samplers, (b) passive exposure of samplers, (c) measurement of the activity of radon adsorbed in the charcoal, and calculation of the radon concentration considering the conditions of sampling. [...] The reduction of the charge of the teflon film is due to the ionization of air in the sampling chamber created by the alpha radiation of radon and its progeny.