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Field evaluation of a passive diesel particulate filter at a limestone mine.

Authors
Noll-JD; Patts-LD
Source
Min Eng 2009 Apr; 61(4):83-86
NIOSHTIC No.
20036231
Abstract
The Mine Safety and Health Administration (MSHA) has promulgated rules to limit the exposure of metal/nonmetal underground miners to diesel particulate matter (DPM). These rules have resulted in many types of control technologies being implemented including diesel particulate filters (D P F). The passive type DPF is the most desirable because it requires little maintenance and it regenerates while the vehicle is operating. One problem with passive DPFs is that many vehicles cannot develop the sustained exhaust temperatures needed to initiate DPF regeneration, and thus it is required that the DPF be catalyzed to decrease the temperature needed for regeneration. In some past studies, such catalyzed filters have been shown to cause an increase in the nitrogen dioxide concentrations in the exhaust, resulting in a potential health hazard. In this study, a lightly catalyzed DPF along with a fuel/-born catalyst were employed to help reduce the DPM emissions from a 980F loader used for cleanup in a stone mine. After 30 days of use, the filter continued to regenerate successfully at the exhaust temperatures generated by this loader, substantially reduced DPM concentrations emitted in the exhaust, and did not cause a measurable increase in nitrogen dioxide levels that could be attributed to the device.
Keywords
Control-methods; Control-technology; Dust-control; Dust-exposure; Engineering-controls; Filters; Filtration; Inhalation-studies; Mining-equipment; Mining-industry; Occupational-exposure; Occupational-hazards; Occupational-health; Particle-aerodynamics; Particulate-dust; Particulates; Qualitative-analysis; Quality-standards; Respirable-dust; Standards; Ventilation; Ventilation-equipment; Ventilation-systems; Work-environment; Worker-health; Workplace-studies; Work-practices
Contact
James D. Noll, NIOSH, Pittsburgh Research Laboratory, P.O. Box 18070, 626 Cochrans Mill Rd. Pittsburgh, PA 15236
CODEN
MIENAB
Publication Date
20090401
Document Type
Journal Article
Email Address
Jnoll@cdc.gov
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Issue of Publication
4
ISSN
0026-5187
NIOSH Division
PRL
Priority Area
Mining
Source Name
Mining Engineering
State
PA
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