|Document ID (ISN)||67085|
|ISSN - Serial title
||0002-8894 - American Industrial Hygiene Association Journal
|Convention or series no.
||Giardino D.A., Durkt G.
||Evaluation of muff-type hearing protectors as used in a working environment
||Mar. 1996, Vol.57, No.3, p.264-271. Illus. 18 ref.
||Noise reduction measurements were carried out for 23 models of muff-type hearing protection devices (HPDs) and 545 machines in a mining environment. The measured effectiveness was compared with the performance predicted by the Environmental Protection Agency Noise Reduction Rating (NRR) method, based on laboratory-derived attenuation values. The field performance was significantly less than that predicted by the NRR method. It was concluded that the NRR method grossly overestimates HPD performance. Use of this laboratory-based technique to predict field performance of HPDs could result in an overestimation of the protection afforded the worker.
||hearing protection; mining industry; sound attenuation; evaluation of equipment
||evaluation of technique; prediction; field tests; earmuffs
||D - Periodical articles
|Country / State or Province||USA|
|Broad subject area(s)
Mining and quarrying