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  2. Radon mitigation - Wikipedia

    en.wikipedia.org/wiki/Radon_mitigation

    Part of a radon mitigation system including the fan and vent pipe is visible near the gutter downspout. Because high levels of radon have been found in every state of the United States, [18] testing for radon and installing radon mitigation systems has become a specialized industry since the 1980s. Many states have implemented programs that ...

  3. Radon - Wikipedia

    en.wikipedia.org/wiki/Radon

    Radon is also oxidised by dioxygen difluoride to RnF 2 at 173 K (−100 °C; −148 °F). [25] Radon oxides are among the few other reported compounds of radon; [29] only the trioxide (RnO 3) has been confirmed. [30] The higher fluorides RnF 4 and RnF 6 have been claimed [30] and are calculated to be stable, [31] but their identification is ...

  4. Health effects of radon - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_radon

    In many cases, mitigators can use PVC piping and specialized radon suction fans to exhaust sub-slab, or sub-membrane radon and other soil gases to the outside atmosphere. Most of these solutions for radon mitigation require maintenance, and it is important to continually replace any fans or filters as needed to continue proper functioning. [109]

  5. History of radiation protection - Wikipedia

    en.wikipedia.org/wiki/History_of_radiation...

    Radon experiments at the Radium Institute in Paris, 1924. Radon is a naturally occurring radioactive noble gas discovered in 1900 by Friedrich Ernst Dorn (1848-1916) and is considered carcinogenic. Radon is increasingly found in areas with high levels of uranium and thorium in the soil. These are mainly areas with high granitic rock deposits.

  6. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    HVAC ventilation exhaust for a 12-story building An axial belt-drive exhaust fan serving an underground car park. This exhaust fan's operation is interlocked with the concentration of contaminants emitted by internal combustion engines. Mechanical, or forced, ventilation is provided by an air handler (AHU) and used to control indoor air quality.

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