Per NIOSH, a person reaches maximum daily exposure at the following times:Īs you can see, each interval of 3 dB results in half the time needed for hearing loss to occur. Organizations such as the National Institute for Occupational Safety and Health (NIOSH) have set permissible daily exposure times based on decibel level to help protect workers who are exposed to loud sounds. Guidelines have been issued for total noise exposure. As mentioned, it’s as much about the distance and time exposed as it is about the intensity.
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