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Document ID (ISN)110062
CIS number 09-1145
ISSN - Serial title 1545-9624 - Journal of Occupational and Environmental Hygiene
Year 2009
Convention or series no.
Author(s) Davies H.W., Teschke K., Kennedy S.M., Hodgson M.R., Demers P.A.
Title Occupational noise exposure and hearing protector use in Canadian lumber mills
Bibliographic information Jan. 2009, Vol.6, No.1, p.32-41. Illus. 16 ref.
Abstract In this study, a comprehensive noise survey of four lumber mills in British Columbia, Canada, using a randomized sampling strategy was carried out, resulting in 350 full-shift personal dosimetry measurements. Sound frequency spectrum data and information on hearing protector usage were also collected. A determinants-of-exposure regression model for noise was developed. The mean exposure level was found to be 91.7 dBA, well above the exposure British Columbia limit of 85 dBA. Of 52 jobs for which more than a single observation was made, only four were below the exposure limit. Twenty-eight jobs had means over 90 dBA, and four jobs had means over 100 dBA. Although the use of hearing protectors is high, it is unlikely that this provides complete protection against noise-induced hearing loss at the observed exposures.
Descriptors (primary) hearing protection; British Columbia; sawmilling industry; logging; noise level
Descriptors (secondary) threshold limit values; Canada; sound spectrum; statistical evaluation; survey; noise dosimetry; hearing loss
Document type D - Periodical articles
Country / State or ProvinceCanada
Subject(s) Forestry
Broad subject area(s) Physical hazards
Browse category(ies) Hearing protection
Woodworking industry
Lumber and the woodworking industry
Forestry and logging