Use of natural basement ventilation to control radon in single family dwellings |
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| Institution: | 1. Radiological Safety Division (RSD), Health Safety and Environment Group (HSEG), Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Homi Bhabha National Institute (HBNI), Tamil Nadu, India;2. Director, Environmental Research Center, J.J.College of Engineering and Technology, Tiruchirappalli 620 009, Tamil Nadu, India;2. Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands;3. Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands;4. Ghent Quantum Chemistry Group, Department of Inorganic and Physical Chemistry, Ghent University, Gent, Belgium;1. School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK;2. School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK |
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| Abstract: | Natural basement ventilation has always been recommended as a means of reducing radon levels in houses. However, its efficacy has never been documented. In these experiments, natural ventilation has for the first time been studied systematically in two research houses during both the summer cooling season and the winter heating season. Ventilation rates, environmental and house operating parameters, as well as radon levels, have been monitored.It can be definitively concluded from radon entry rate calculations that natural ventilation can reduce radon levels two ways. The first is by simple dilution. The second is by reducing basement depressurization and thus the amount of radon-contaminated soil gas drawn into the structure.Therefore, basement ventilation can be an effective mitigation strategy under some circumstances. It might be especially useful in houses with low radon concentrations (of the order of 370 Bq m −1) or those with low levels and which cannot be mitigated cost-effectively with conventional technology. |
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