Changes

'''''[[ICRP Publication 126'' |Publication 126]]<ref name="Pub126">[[ICRP Publication 126]] Radiological Protection against Radon Exposure Ann ICRP 43(3) 2014.</ref> paragraph 22-25'''While the radon concentration from soil to outdoor air is diluted rapidly, this is not the case if the flux enters closed premises such as dwellings … there is a pressure differential between the soil and the foundations of the building. This causes an enhanced flow of radon-rich soil air...

The transfer of ''While the radon concentration from the soil to buildings depends on several parameters:*the composition of the soil (chemistry, geology, soil moistureoutdoor air is diluted rapidly, and permeability to radon);*the concentration of radon in this is not the soil;*case if the difference in flux enters closed premises such as dwellings … there is a pressure between inside and outside of the considered building or location, differential between the soil and the atmosphere surrounding the building, and between the soil and the lower rooms foundations of the building;*the area . This causes an enhanced flow of building in contact with the ground; and*the radon-rich soil air tightness of the outer shell of the building, including the presence of cracks, pipe ducts, cable ducts, etc., especially in the floors and foundations of the building..''

''The transfer of radon within from the soil to buildings also depends on several factorsparameters: *''the circulation composition of air the soil (chemistry, geology, soil moisture, and permeability to radon);''*''the concentration of radon in the building depending on ventilation and air conditioningsoil;''*''the meteorological difference in pressure between inside and seasonal parametersoutside of the considered building or location, mainly between the soil and the atmosphere surrounding the temperature difference building, and between outside the soil and inside airthe lower rooms of the building;''*''the floor level and the size area of building in contact with the roomsground; and''*''the lifestyle choicesair tightness of the outer shell of the building, including the presence of cracks, pipe ducts, cable ducts, such as opening doors and windowsetc., especially in the floors and the working habits foundations of the building occupants.''

''The transfer of radon within buildings also depends on several factors: ''*''the circulation of air in the building depending on ventilation and air conditioning;''*''the meteorological and seasonal parameters, mainly the temperature difference between outside and inside air;''*''the floor level and the size of the rooms; and''*''the lifestyle choices, such as opening doors and windows, and the working habits of the building occupants.'' ''Radon can be released from [building] materials into the surrounding air. … However, in the majority of cases, this source of radon is of secondary importance… ''