Radon in Swiss housing. Radon in Wohnraumen in der Schweiz

Describes the aims, methods and results of a preliminary study into radon in Swiss house carried out 1981/82. In the winter of 1981/82 three Karlsruhe type passive radon dosimeters were exposed in each of 123 dwellings in selected regions of Switzerland and the results evaluated in summer 1982. Thedosimeters were normally placed in the cellar, living room and a bedroom. Gives figures for the average radon concentrations in the rooms. Notes marked regional differences caused by different geological formations. Notes the radon occurs mainly in the earth's surface and only in small quantities in the building materials. Radon is the largest individual component of natural radiation in Switzerland. Discusses possible countermeasures and their problems. Recommends a staged attack on the problem.