radon

Describes the different types of monitoring and sampling techniques that can determine the radiation burden of the general public from radon and its decay products. This is accomplished by measuring the range and distribution of radon and rad

Describes methods of predicting concentration levels of indoor air pollution in a variety of residences by using residence air infiltration rates, residence volumes, and source terms, and by making assumptions about occupant lifestyle and poll

Results of air quality measurements are presented for a group of low-leakage houses located in Saskatoon, Saskatchewan. A total of 46 houses were tested for formaldehyde, nitrogen dioxide, radon, and humidity levels. The median level of formalde

The results of our investigations in the Federal Republic of Germany on the Rn-222 and Rn-220 daughter product concentration in dwellings and in the open air are presented. The median Rn-222 concentration indoors was approximately 4 times hig

In Sweden there are two major sources to indoor radon, the building material and radon from uranium rich soils. It is now widely accepted that indoor radon daughter concentration in Sweden, higher than 1000 Bq/m3 is most frequently caused by

In large areas of the Swiss Alps, the high radium content of rocks and soil, which results in high source terms for radon from the ground, may produce considerable indoor levels of radon in dwellings with low air infiltration. During the winter

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.

Sources of radon and the high levels of radon in many locations and building materials in Sweden are considered. Improvements in energy conservation through the reduction of ventilation rate have lead to very high levels of radon over 1000 BqRnD/m3 in some houses. Recommendations on acceptable levels of gamma radiation on building sites and radon concentration in dwellings are given. It is estimated that there are 30-40,000 dwellings over the Swedish recommended limit of 400 BqRnD/m3 requiring modification.

Describes expectations people have of indoor climate. Notes that the quality of indoor climate has often taken second place to fashionable architectural and material considerations. Refers to concern for improved environment and awareness of formaldehyde, radon and other pollutants and the need for correct ventilation to achieve derived air quality. Proves guidelines for air quality and the thermal indoor climate in both housing and working premises.

Health problems have occurred after the introduction of building regulations with stricter requirements for airtightness. Reviews work done to improve problems associated with the thermal environment and human heat balance, building and installation conditions; the chemical environment and human awareness of pollutants; medical aspects; radon radiation; microbiological conditions; energy savings, air quality and efficient ventilation; thermal insulation and airtightness; static electricity and toxic gases from building materials and the problems of low ventilation rates.