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Real-time video monitoring of noise in agriculture: an evaluation and education tool.

Appl Occup Environ Hyg 1994 Aug; 9(8):525-528
The use of real time video recording for assessing noise exposures in agricultural occupations was investigated. Noise exposures occurring during mowing with a tractor and brush hog, construction of a grain storage bin using powered hand tools, and operating a grain dryer at a cash grain farm near Cincinnati, Ohio were monitored for 30 minutes with personal sound level meters worn by the workers and simultaneously videotaping the activities. The clock on the video camera was synchronized with the clock on a datalogger that was used to store the output (data) of the sound level meters. The data were then computer processed to produce a single video recording showing the noise exposures for each work activity. The noise exposure data were represented by a bar placed on the right side of the video track, indicating the relative noise exposures of the workers. Sound levels recorded during tractor and brush hog mowing, grain storage bin construction, and grain dryer operation varied from 57 to 91, 60 to 98, and 76 to 106 decibels-A (dBA), respectively. The corresponding means were 85, 80, and 96dBA. The author concludes that the noise exposures associated with construction of the grain storage bin and operation of the grain dryer indicate that hearing protection should be used. The mean noise exposure during tractor and brush hog mowing equals that of the American Conference of Governmental Industrial Hygienists recommended standard of 85dBA. The need for hearing protection would depend on the time spent on this task. Real time video monitoring can provide detailed information for assessing noise exposures during agricultural operations. It can also be used as a safety training tool for agricultural workers.
NIOSH-Author; Noise-exposure; Agricultural-workers; Workplace-monitoring; Hand-tools; Visual-aids; Work-analysis; Noise-sources; Agricultural-machinery
Publication Date
Document Type
Journal Article
Tharr D
Fiscal Year
Issue of Publication
Source Name
Applied Occupational and Environmental Hygiene
Page last reviewed: October 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division