Limitations of using dosimeters in impulse noise environments

Journal of Occupational and Environmental Hygiene
Chucri A Kardous, Robert D Willson

Abstract

The National Institute for Occupational Safety and Health (NIOSH) investigated the capabilities of noise dosimeters to measure personal exposure to impulse noise. The two leading types of commercially available dosimeters were evaluated in terms of their ability to measure and integrate impulses generated from gunfire during live-fire exercises at a law enforcement indoor firing range. Sound measurements were conducted throughout the firing range using dosimeters, sound level meters, and a measurement configuration that consisted of a quarter-inch microphone and a digital audiotape recorder to capture the impulse waveforms. Personal dosimetry was conducted on eight shooters, an observer, and the range master. Peak levels from gunfire reached 163 decibels (dB), exceeding the nominal input limit of the dosimeters. The dosimeters "clipped" the impulses by acting as if the gunfire had a maximum level of 146 dB. In other cases, however, peak levels (e.g., 108 dB) were below the dosimeter input limits, but the dosimeters still showed a peak level of 146 dB. Although NIOSH recommends that sound levels from 80 to 140 dB (A-weighted) be integrated in the calculation of dose and the time-weighted average, our present data suggest this cr...Continue Reading

References

Jul 11, 1991·The Journal of the Acoustical Society of America·J H Patterson
Aug 1, 1986·The Journal of the Acoustical Society of America·D Henderson, R P Hamernik
Sep 1, 1994·The Journal of the Acoustical Society of America·S F LeiR P Hamernik
Feb 24, 2001·Applied Occupational and Environmental Hygiene·UNKNOWN National Institute for Occupational Safety and Health

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Citations

May 27, 2015·Journal of Occupational and Environmental Hygiene·Lynn R Gilbertson, Donna J H Vosburgh
Dec 18, 2019·International Journal of Audiology·Ann NakashimaRichard W Danielson
Jan 8, 2019·International Journal of Audiology·Shakti K DavisChristopher J Smalt

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