Volume 3, Issue 10 (November 2006)

    A New Concept for Leak Testing Environmental Enclosure Filtration Systems


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    A method (patent pending) has been developed to determine the quality of environmental cab filtration systems. This method utilizes specially configured filter cartridges to remove carbon dioxide from the ambient air with the environmental cab's air filtration system. A real-time gas monitor is placed inside an unoccupied cab with the filtration system running to time decay the carbon dioxide to its lowest concentration or equilibrium level. The outside carbon dioxide concentration level can be measured concurrently with another gas monitor or with the same inside cab gas monitor during a representative period before and after the inside sampling is conducted. Cab filtration system leakage is comparatively deduced from the difference between the special cartridge filter efficiency and overall cab efficiency. Laboratory trials have illustrated that desirable high efficiency test filter configurations (greater than 99 % efficiency) can be devised, but have air quantity and test time limitations. These trials also demonstrated that CO2 penetration was reflective of controlled air leaks around a high efficiency filter under equilibrium conditions. This report examines the elements of this patent pending method.

    Author Information:

    Organiscak, JA
    Mining Engineer, National Institute for Occupational Safety and Health, Pittsburgh, PA

    Schmitz, M
    Clean Air Filter®, Defiance, IA

    Stock #: JAI100618

    ISSN: 1546-962X

    DOI: 10.1520/JAI100618

    ASTM International is a member of CrossRef.

    Title A New Concept for Leak Testing Environmental Enclosure Filtration Systems
    Symposium , 0000-00-00
    Committee F21