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Document ID (ISN)78447
CIS number 02-895
ISSN - Serial title 1232-1087 - International Journal of Occupational Medicine and Environmental Health
Year 2001
Convention or series no.
Author(s) Żera J.
Title Impulse noise in industrial plants: Statistical distribution of levels
Bibliographic information Apr.-June 2001, Vol.14, No.2, p.127-133. Illus. 24 ref.
Abstract Impulse noise generated by industrial machines at the workplace is a cause of substantial hearing loss in workers. This article presents data on workplace impulse noise recorded in drop-forge, punch-press and machinery shops. The survey shows that in the drop-forge shop, over 90% of acoustic impulses generated by hammer strikes exceed permissible levels, while in the punch-press shop, only 10-20% of impulses generated exceed maximum permissible levels. There is a wide variety of impulse types in the machinery shop; in particular, the stamping pistol generated impulses in excess of permissible levels. Many impulses have a rise time shorter than 1ms, which could also be a factor in hearing damage. However, this area requires further study.
Descriptors (primary) impulse noise; metalworking industry; noise level
Descriptors (secondary) drop forging; machining; noise measurement; hearing loss; permissible levels; blanking presses
Document type D - Periodical articles
Country / State or ProvincePoland
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Metalworking industry