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  2. Radon mitigation - Wikipedia

    en.wikipedia.org/wiki/Radon_mitigation

    Radon mitigation is any process used to reduce radon gas concentrations in the breathing zones of occupied buildings, or radon from water supplies. Radon is a significant contributor to environmental radioactivity and indoor air pollution. Exposure to radon can cause serious health problems such as lung cancer. [1]

  3. Radium and radon in the environment - Wikipedia

    en.wikipedia.org/wiki/Radium_and_radon_in_the...

    Residues from the oil and gas industry often contain radium and its daughters. The sulfate scale from an oil well can be very radium rich. The water inside an oil field is often very rich in strontium, barium and radium, while seawater is very rich in sulfate: so if water from an oil well is discharged into the sea or mixed with seawater, the radium is likely to be brought out of solution by ...

  4. Drain cleaner - Wikipedia

    en.wikipedia.org/wiki/Drain_cleaner

    Most municipal building codes mandate that drain plumbing increase in diameter as it moves closer to the municipal sewer system. i.e., most kitchen sinks evacuate water with a 1 + 1 ⁄ 2-inch drain pipe, which feeds into a larger 4-inch drain pipe on the main plumbing stack before heading to a septic tank or to the city sewage system. This ...

  5. Pipe-in-pipe system - Wikipedia

    en.wikipedia.org/wiki/Pipe-in-pipe_system

    Internal pipes can be seen entering the external pipes in the bottom of the cabinet. In case of an internal leak, water will overflow through the external piping and can be detected inside the cabinet. A pipe-in-pipe system [1] is a form of plumbing where all water pipes are running inside another pipe. Its purpose is to ensure that any leaks ...

  6. Radon - Wikipedia

    en.wikipedia.org/wiki/Radon

    High levels of radon in the water supply can also increase indoor radon air levels. Typical entry points of radon into buildings are cracks in solid foundations and walls, construction joints, gaps in suspended floors and around service pipes, cavities inside walls, and the water supply. [15]

  7. Orangeburg pipe - Wikipedia

    en.wikipedia.org/wiki/Orangeburg_pipe

    Orangeburg pipe (also known as "fiber conduit", "bituminous fiber pipe" or "Bermico" or "sand pipe") is bituminized fiber pipe used in the United States. It is made from layers of ground wood pulp fibers and asbestos fibres compressed with and bound by a water resistant adhesive then impregnated with liquefied coal tar pitch .

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