Transcription of 4 EXPOSURE CRITERIA, OCCUPATIONAL EXPOSURE LEVELS
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4 EXPOSURE CRITERIA, OCCUPATIONAL EXPOSURE LEVELS
4 EXPOSURE criteria , OCCUPATIONAL EXPOSURE LEVELSDr JohnsonBr el, Bertrand, Johnson Acoustics Mile High , Utah 84604 USAFAX 001-901 224 P. Papadopoulos Dr N. Watfa and Dr J. TakalaMinistry of Labour & Social Security, OCCUPATIONAL Safety and Health BranchHead of Unit, SEPE Stadiou 29, International Labour Office (ILO)GR 101 10 Athens, Geneva 11 GREECE, SWITZERLANDFax: GENERAL CONSIDERATIONSA irborne sound can be described as propagating fluctuations in atmospheric pressure capable ofcausing the sensation of hearing . In OCCUPATIONAL health, the term " noise " is used to denote bothunwanted sound and wanted sound as they can both damage hearing . noise - induced hearing losshas been recognized and reported for several hundred years.
Permanent noise-induced hearing loss is related to the sound pressure level and frequency distribution of the noise, the time pattern and duration of exposure, and individual susceptibility. The ability to hear and understand everyday speech under normal conditions is regarded as the most important function of the hearing mechanism.
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