Effect of plateout, air motion and dust removal on radon decay product concentration in a simulated residence

The effectiveness of increased air motion and dust removal in reducing radon decay product concentration in residences subject to radon intrusion was evaluated in a 78-m3 room under steady-state conditions for air infiltration rates between 0.2 and 0.9 air changes per hour. Room-size, portable elect...

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Bibliographic Details
Published inHealth physics (1958) Vol. 45; no. 2; p. 463
Main Authors Rudnick, S N, Hinds, W C, Maher, E F, First, M W
Format Journal Article
LanguageEnglish
Published United States 01.08.1983
Subjects
Air Movements
Dust
Housing
Mathematics
Models, Structural
Radioactive Fallout - analysis
Radon - analysis
Ventilation
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Summary:The effectiveness of increased air motion and dust removal in reducing radon decay product concentration in residences subject to radon intrusion was evaluated in a 78-m3 room under steady-state conditions for air infiltration rates between 0.2 and 0.9 air changes per hour. Room-size, portable electrostatic precipitators and high-efficiency fibrous filters were tested as typical residential air cleaning devices; a portable box fan and a ceiling fan were employed as typical residential air movers. Reductions in working levels of 40-90% were found. The fate of radon decay products, with and without mixing fans, was determined by direct measurement. When mixing fans were used, most of the nonairborne potential alpha-energy was plated out on the room surfaces; less than 10% was deposited on the fan blades or housing. Results were compared to a mathematical model based on well-mixed room air, and good agreement was obtained.
ISSN:0017-9078
DOI:10.1097/00004032-198308000-00022