Centro de Documentacion de Fundación MAPFRE - The Attenuations of some hearing protectors as used in the workplace

Notes: Sumario: A sound field which conforms to the requirements of ISO 4869 (1981) has been created in an audiometric booth which has been installed in a mobile trailer. This trailer has visited industrial sites where protectors, which were being used in the workplace, were tested. Work pleople, selected at random, were tested in a procedure similar to that specified in ISO 4869. The occluded and unoccluded thresholds of hearing were measured and then used to estimate the protector attenuation. Reslts from a number of muffs, plugs and helmet-mounted muffs, tested in the workplace, show that, in most cases, the attenuations were less and the standard desviations were greater than those quoted by manufacturers from laboratory ISO 4869 tests. The implications of these results for the selection of hearing protectors are discussedRelated records: En: The Annals of occupational hygiene. - Oxford [etc.]. - nº 5, October 1990 ; p. 453-470Materia / lugar / evento: Higiene industrial Contaminantes físicos Ruido Acústica Equipos de protección individual Protectores auditivos Valores TLV Nivel de ruido Normas ISO Ensayos Otros autores: Hill, E.
Secondary titles: Título: The Annals of occupational hygiene
Other categories: 872