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Effect of Industrial Work-Related Variables on Achieved Hearing Protector Attenuation.

Authors
Casali-JG; Park-Y
Source
Auditory Systems Laboratory, Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 1990 Nov:71 pages
Link
NIOSHTIC No.
00201851
Abstract
Studies were conducted to determine spectral noise attenuation and perceived comfort in controlled laboratory and industrial field settings. The laboratory simulations were developed to investigate the effects of several field factors of hearing protective device (HPD) wearing time, activity movement, and HPD fitting conditions on spectral attenuation and comfort afforded by foam and triple flanged earplugs, a foam cushion earmuff, and an earmuff over foam earplug combination. The findings indicated that achieved attenuation and user comfort significantly decreased over the two hour HPD wearing period and that training for better fitting markedly improved the noise protection. In the field study the actual noise attenuation and comfort were determined over two consecutive 3 week periods of HPD use in five industrial workplaces. The overall field attenuation results indicated that in general the laboratory protocols cannot be relied upon to yield valid predictions of true workplace protection levels afforded by hearing protectors. The exception was the earmuff for which laboratory test results were not significantly different from those of the field at any frequency when like fitting protocols were compared.
Keywords
NIOSH-Grant; Noise-induced-hearing-loss; Workplace-studies; Personal-protective-equipment; Hearing-impairment; Noise-protection;
Contact
Indus Engr and Operations Res Virginia Polytechnic Institute Blacksburg, VA Blacksburg, VA 24061
Publication Date
19901115
Document Type
Final Grant Report;
Funding Amount
107502.00
Funding Type
Grant;
Fiscal Year
1991
NTIS Accession No.
PB92-124445
NTIS Price
A05
Identifying No.
Grant-Number-R01-OH-02540
NIOSH Division
OEP
Priority Area
Hearing Loss; Disease and Injury; Noise-induced-hearing-loss; Control Technology and Personal Protective Equipment; Research Tools and Approaches;
Source Name
Auditory Systems Laboratory, Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia
State
VA;
Performing Organization
Virginia Polytechnic Inst and St Univ, Blacksburg, Virginia
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