The OSHA Noise Standard (29CFR1910.95) states when the 8-hour noise exposure exceeds 90 dB-A, an effort to control noise through engineering methods must be attempted. Hearing protection alone is not an acceptable means of OSHA compliance to the noise standard. The reason is simple, the poorest means of protection, whether to noise or other health hazard, is to utilize personal protection (in this case, hearing plugs or muff). The best protection is to eliminate the excessive noise or isolate the individual from the noise source. That means some form of engineering control—design changes to the source or separation of a worker from the machine. There are a vast assortment of possibilities depending upon the noise source and the amount of energy (in the form of noise) that is produced. Remember that noise is energy and multiple sources compound the energy produced. For example: two (2) machines side-by-side each producing noise of 88 decibels each when combined that is...
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