Evidence on passive remediation of radon in UK homes
PHE ePoster Library. McColl N. Apr 10, 2019; 259603; 15569
Mr. Neil McColl
Mr. Neil McColl
Login now to access Regular content available to all registered users.

You may also access this content "anytime, anywhere" with the Free MULTILEARNING App for iOS and Android
Rate & Comment (0)
Abstract Radon is a radioactive gas originating from uranium that occurs in trace amounts in rocks and soils. Radon mixed with air in the soil enters buildings through gaps in the floor due to pressure differences inside buildings compared with outside. The lower pressure inside buildings is caused by warm air rising and winds blowing over the buildings: this may be increased by chimneys and flues. High radon levels can be reduced by remedial building works, generally powered by continuous electrical fans. Radon in the home is the UK's single largest source of radiation exposure. Epidemiological studies have shown a correlation between exposure to radon in the home and increased risk of lung cancer. Radon in UK homes is linked with over 1000 deaths per year.Passive (non-powered) remedial systems are more environmentally friendly, sustainable and generally have lower installation and maintenance costs. The effectiveness of passive remedial systems on high radon levels in over 1,000 homes has been analysed using data from the UK National Radon Database. Increasing under-floor ventilation is the most frequently used passive method with typical reduction factors (RF) of around 1.8. Installing a passive sump (sub-slab depressurisation using a passive stack) reduces radon levels by a factor of around 1.6. Sealing floors and introducing permanent ventilation both have a RF of around 1.3. By using a passive system, there are savings in energy costs to run fans. Householders may be more likely to adopt passive systems because of lower installation and running costs and quieter operation. Passive systems are generally not as effective as 'fan powered' systems but could be used where the annual average radon level is around 300 Bq m-3.This information will be used to update guidance for householders and others. Funding This work was funded by PHE.
    This eLearning portal is powered by:
    This eLearning portal is powered by MULTIEPORTAL
Anonymous User Privacy Preferences

Strictly Necessary Cookies (Always Active)

MULTILEARNING platforms and tools hereinafter referred as “MLG SOFTWARE” are provided to you as pure educational platforms/services requiring cookies to operate. In the case of the MLG SOFTWARE, cookies are essential for the Platform to function properly for the provision of education. If these cookies are disabled, a large subset of the functionality provided by the Platform will either be unavailable or cease to work as expected. The MLG SOFTWARE do not capture non-essential activities such as menu items and listings you click on or pages viewed.

Performance Cookies

Performance cookies are used to analyse how visitors use a website in order to provide a better user experience.

Save Settings