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Computing partial-shift respirator use periods.

H P Shotwell, J C Caporossi

    American Industrial Hygiene Association Journal
    |February 1, 1983
    PubMed
    Summary

    Industrial hygienists can determine the minimum respirator use time needed to reduce airborne contaminant exposure. This method uses Time-Weighted Averages and respirator protection factors for accurate exposure level calculations.

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    Area of Science:

    • Occupational Health
    • Industrial Hygiene
    • Environmental Science

    Background:

    • Engineering controls may not always sufficiently reduce airborne contaminant concentrations.
    • Respirator use is sometimes necessary to achieve desired exposure limits.

    Purpose of the Study:

    • To provide a method for industrial hygienists to calculate the minimum required respirator use time.
    • To ensure effective exposure reduction when engineering controls are insufficient.

    Main Methods:

    • Calculation of Time-Weighted Averages (TWA).
    • Utilizing upper confidence levels of air sampling data.
    • Incorporating respirator protection factors (RPFs).

    Main Results:

    • A procedure to determine the minimum duration of respirator use.
    • Enables targeted and efficient exposure control.

    Conclusions:

    • This method offers a quantitative approach to respirator program management.
    • It helps industrial hygienists optimize respirator use for worker protection.

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