The Occupational Safety and Health Administration.docx

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The Occupational Safety and Health Administration (OSHA) In the United States, concern with noise exposures began primarily in the workplace. Guidelines for occupational noise exposure were established by the Occupational Safety and Health Administration in the year 1983. OSHA is part of the U.S. Department of Labor and is responsible for developing and enforcing workplace safety and health regulations. The OSHA standard (29CFR1910.95) carries behind it the force of law and employers in the industrial sector are bound to comply with it. Those employed in mining, railroad, coast guard, military, and construction are bound by their own standards. OSHA permits exposures of 85 dBA for 16 hours per day, and uses a 5-dB time-intensity tradeoff meaning for every 5 dB increase in noise level, the allowable exposure time is reduced by half. And for every 5 dB decrease in noise level, the allowable exposure time is doubled. OSHA defines material hearing impairment as average hearing thresholds exceeding 25 dB HL at 1k, 2k and 3k Hz, bilaterally. OSHA uses a criterion level of 90 dB, a threshold level of 80 dB, and an exchange rate of 5 dB. An OSHA 100% noise dose is 90 dB for 8
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