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Noise-abatement method for explosives testing

H E Pfeifer, B N Odell, V E Arganbright

    American Industrial Hygiene Association Journal
    |September 1, 1980
    PubMed
    Summary
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    Researchers developed a method to predict explosives weight limits, mitigating noise complaints from atmospheric conditions. This technique ensures safe aboveground detonations without excessive sound propagation to nearby communities.

    Area of Science:

    • Environmental Science
    • Acoustics
    • Explosives Engineering

    Background:

    • Detonations at Lawrence Livermore Laboratory's Site 300 caused noise complaints in neighboring areas.
    • Atmospheric conditions, specifically air temperature and wind at various elevations, were identified as primary factors returning blast waves to the surface.

    Purpose of the Study:

    • To develop a method for determining maximum aboveground explosives weight limits.
    • To mitigate excessive noise propagation to populated areas during detonations.

    Main Methods:

    • A combined literature review, research study, and experimental test program were conducted.
    • A method was devised using pressure-distance-weight nomograms and a sound-velocity curve.
    • The sound-velocity curve was computed using U.S. Weather Bureau temperature data and radar-acquired wind data.

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    Main Results:

    • The developed method allows for the prediction of explosives weight limits under various atmospheric conditions.
    • Successful detonation of thousands of shots without excessive noise in nearby communities has been achieved.

    Conclusions:

    • The devised method effectively controls noise pollution from aboveground explosives testing.
    • Atmospheric condition prediction is crucial for managing sound propagation from detonations.