Recently, it has been proved that more than half of the exposure to natural background radiation is from radon isotopes and their progenies [1]. The inhalation of radon and its decay products can result in biological changes within the lungs, thus increasing the risk of lung cancer. According to a report of the World Health Organization (WHO), after smoking, radon is the second most frequently ...

Superstorm Sandy affected much of the US East Coast extending over 1800 km. It passed over the test location in the State of Maryland on 29 October 2012. Being 350 km away from the regions of highest intensity the storm was of lower intensity at the test location. Continuous radon monitors and passive radon monitors were used for the measurement. The test location was the basement of a single f...

In this paper I will explain how the data from a continuous radon monitor can be used to estimate the minimum level of ventilation for a home. It is well h o w that radon levels in a home follow a sinusoidal pattem. This is simply explained by noting that the strength of the radon source is propohonal to the indoor-outdoor pressure difference which itself follows a sinusoidal pattern due to sol...

Grab sampling either using the active charcoal method in combination with an ionization chamber or using a working level monitor was performed for the measurement of radon concentration in Taiwan's two largest cities Taipei and Kaohsiung. Long-term monitoring of radon concentration in dwellings and business buildings was also carried out with cellulose nitrate films as the alpha detectors. The ...

On the basis of the results of the recent combined analyses of epidemiological studies, the International Commission on Radiological Protection (ICRP) revised the lifetime excess absolute risk of radoninduced lung cancer to 5 10 per working level month (WLM). When applying this new coefficient in risk assessment, it should first be understood that the coefficient is associated with a chronic ex...

introduction recent studies of public underground parking lots showed the influence of radon concentration and the probable discomfort caused by parking cars. materials and methods radon concentration was measured in semi-closed public parking lots in the six governorates of kuwait, using durridge rad7radon detector (usa). results the peak radon concentration in the parking lots of kuwait gover...

The paper discusses the results of 30 years of radon indoor entry research. While some progress has been made, many discrepancies between current theories and experimental data still remain. Misconceptions of radon transport mechanisms in homes are analyzed. The role of US Environmental Protection Agency in radon indoor entry research is examined and the agency's policies are criticize...

Balanced ventilation with heat recovery has strong effects on radon mitigation and energy saving in residential buildings. This new technology enables improvement of both indoor air quality and energy efficiency without sacrificing either. Reducing radon by means of forced ventilation requires an increase in outdoor supplied air (i.e. ventilation rate), which in turn can increase energy use. En...

Radiation from natural sources is one of causes of the environmental diseases. Radon is the leading environmental cause of lung cancer next to smoking. To investigate the relationship between indoor radon concentrations and lung cancer, researchers must be able to estimate an individual's cumulative level of indoor radon exposure and to do so, one must first be able to assess indoor radon conce...

The Florida Department of Health conducted an investigation to address reported difficulties in mitigating some units of a large apartment complex in Florida. The complex houses over 300 one and two bedroom apartments in over 40 three-story concrete structure buildings. Initial mitigation work successfully mitigated many of the first floor units to levels below 3.5 pCV1 using Active Soil Depres...