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Practical application of a partial cab to reduce the A-weighted sound level at the operator's station on surface drill rigs.

Authors
Yantek-D; Jurovcik-P Jr.; Ingram-D
Source
Trans Soc Min Metal Explor 2007 Dec; 322:25-36
NIOSHTIC No.
20033107
Abstract
The National Institute for Occupational Safety and Health (NIOSH) identified hearing loss as the most common job-related disease in the United States in its 1996 National Occupational Research Agenda. Previous studies by NIOSH have shown that operators of surface drill rigs without cabs are commonly exposed to A-weighted sound levels exceeding 90 dB. During hammer-drilling, A-weighted sound levels exceeding 100 dB were recorded at the operator station. NIOSH collaborated with a local drilling company to design and install a partial cab between the operator and the drill steel in an effort to reduce the sound level at the operator station. Sound level measurements in the field show the partial cab reduces the A-weighted sound level by 5 to 9 dB at the operator's left ear and 2 to 5 dB at the operator's right ear while hammer-drilling. This paper briefly discusses the preliminary design of a cab and the testing of materials for construction of the prototype. An explanation of the ideas behind the prototype design and fabrication are covered. Finally, the field test method and results are discussed in detail.
Keywords
Mining-industry; Underground-mining; Noise; Noise-exposure; Noise-levels; Noise-sources; Noise-analysis; Sound; Engineering-controls; Control-technology
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CODEN
TMENAE
Publication Date
20071201
Document Type
Journal Article
Editors
Yernberg-WR
Fiscal Year
2008
NTIS Accession No.
NTIS Price
ISBN No.
9780873352611
ISSN
1075-8623
NIOSH Division
PRL
Source Name
Transactions of the Society for Mining, Metallurgy, and Exploration
State
PA; CO
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