Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 2 Introduction to the physics of low-noise design 90.93 ISO/TC 43/SC 1 ISO 116891996 Acoustics — Procedure for the comparison of noise-emission data for machinery and equipment
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Get PriceTOP 10 NOISE CONTROL TECHNIQUES The following are 10 simple noise control techniques that have wide application across the whole of industry. In many cases, they will produce substantial noise reductions quickly and cheaplywith little or no effect on normal operation or use. 1 DAMPING . Typical applications . Chutes, hoppers, machine guards, panels, conveyors, tanks. . . . . Technique
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Get PriceDue to the massive nature of mining equipment, these machines are built using large and thick steel panels and thus radiate noise mostly at low frequencies, i.e., 200 Hz to 1000 Hz. The challenge of using phased arrays for mining applications is then related to the frequency range of interest and the resolution obtained at such frequencies.
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Get PriceNoise Chart Specifics about the measurement of a particular sound source can be found in the Noise Navigator® Sound Level Database, E-A-R 88-34/HP, by Elliott H Berger, Rick Neitzel, and Cynthia A Kladden, EARCAL Laboratory, 3M Occupational Health & Environmental Safety Division, an extensive compilation of data on noise level measurements, including many of the values appearing on this
Get Pricesuch as lasers, microwave transmitters, equipment that generates infra-red or ultraviolet light, and X-ray machines. Workers may be harmed through exposure to laser beams and ultraviolet light (e.g. skin and eye damage), and X-rays (e.g. cancer). Potential radiation energy sources used at mining operations include downhole or well logging tools, portable XRF analysers, nuclear moisture or
Get Price07/08/2015 · Carbon disulfide was shown to reduce hearing in the low frequencies in a study of 346 rayon wool workers, where 105 were exposed to equivalent noise levels of 8090 dB, 132 were exposed to a combination of noise and carbon disulfide, and the rest were not exposed (Chang et al. 2003). The hearing loss was about 10 dB in both exposed groups compared to the nonexposed.
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Get PriceNoise induced hearing loss (NIHL) is within the top five occupational illnesses in Zimbabwe. Workers at a mining company complained about loss of hearing at the mine clinic. Objective. To determine the prevalence of NIHL among employees at the Mine. Methods. We conducted a descriptive cross sectional study at the mine. Workers were proportionally selected to represent all the mine departments
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Get PriceTOP 10 NOISE CONTROL TECHNIQUES The following are 10 simple noise control techniques that have wide application across the whole of industry. In many cases, they will produce substantial noise reductions quickly and cheaplywith little or no effect on normal operation or use. 1 DAMPING . Typical applications . Chutes, hoppers, machine guards, panels, conveyors, tanks. . . . . Technique
Get PriceNoise-induced hearing loss (NIHL) is the single greatest cause of permanent hearing loss in Australia and it's also the most preventable. Over the past four years more than 10,000 workers have been affected by noise-related injuries in NSW workplaces, with more than 90 per cent left permanently disabled.
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