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Long-term evaluation of CAB particulate filtration and pressurization performance.

Authors
Cecala-AB; Organiscak-JA; Noll-JD
Source
2012 SME Annual Meeting, February 19 - 22, Seattle, Washington, Preprint 12-059. Englewood, CO: Society of Mining, Metallurgy and Exploration, Inc., 2012 Feb; :279-287
Link
NIOSHTIC No.
20041627
Abstract
Over the past decade, a substantial effort has been made to improve the air quality inside enclosed cabs of both underground and surface mobile mining equipment to reduce respirable dust exposures to the equipment operators. As part of this effort, the National Institute for Occupational Safety and Health, (NIOSH) completed a comprehensive laboratory study which determined the significant factors for cab filtration and pressurization systems. From this information, a major underground mining equipment manufacturer designed a filtration and pressurization system which was incorporated into the enclosed cabs of its equipment. A long-term evaluation was performed on the effectiveness of this filtration and pressurization system to improve the air quality in the enclosed cabs of two different pieces of equipment, being a face drill and a roof-bolter machine, at an underground limestone mine. This long-term evaluation demonstrated a significant reduction in dust levels comparing outside to inside cab respirable dust concentrations. During this evaluation, a modification to remove one of the filters on the roof-bolter machine simplified the design without sacrificing the system's efficiency. Testing using particle count instruments performed during non-production time periods on both pieces of equipment indicated Protection Factors greater than 100 when comparing respirable-sized dust particles inside the enclosed cab relative to outside.
Keywords
Mining-industry; Mining-equipment; Equipment-design; Air-flow; Air-pressure; Air-quality; Air-quality-control; Underground-mining; Respirable-dust; Employee-exposure; Equipment-operators; Laboratory-testing; Filtration; Pressure-testing; Machine-operation; Machine-operators; Mine-workers; Dust-control; Dust-control-equipment; Dust-exposure; Particle-counters; Miners
Publication Date
20120219
Document Type
Conference/Symposia Proceedings
Fiscal Year
2012
NTIS Accession No.
NTIS Price
ISBN No.
9781622760893
Identifying No.
B10242012
NIOSH Division
OMSHR
Priority Area
Mining
Source Name
2012 SME Annual Meeting, February 19 - 22, Seattle, Washington, Preprint 12-059
State
PA; WA; CO
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