Tailpipe emissions and ambient concentrations of pollutants from diesel engines during in-use and isolated zone studies.
Cauda-EG; Patts-LD; Bugarski-AD; Janisko-SJ; Hummer-JA; Terrillion-T; Kiefer-J
Proceedings of the 14th United States/North American Mine Ventilation Symposium, June 17-20, 2012, Salt Lake City, Utah. Calizaya F, Nelson M, eds. Salt Lake City, UT: University of Utah, 2012 Jun; :233-239
The National Institute for Occupational Safety and Health (NIOSH) completed two studies in a Newmont USA Limited gold mine in Carlin, Nevada, to test the performance of different diesel emissions control technologies. This manuscript reports results from these two studies with the focus on the correlation between operator exposure and tailpipe concentration of criteria gases. During the first study, one mining vehicle powered by a Tier 3 Mercedes Benz OM926 diesel engine and two vehicles powered by Tier 3 Mercedes Benz OM904 engines, all equipped with aftertreatment control technologies, were tested during actual operation. The concentration of CO, NO, and NO2 emitted by the vehicles was monitored in real time by an Fourier Transform Infra-Red (FTIR) gas analyzer sampling from the tailpipe (Gasmet USA) while the ambient concentration of the same compounds was measured by multi-gas monitors (Industrial Scientific) in two selected areas on the vehicle and inside the cab. During the second study, two mining vehicles powered by Tier 3 and Tier 4i Mercedes Benz 926 diesel engines were tested under a consistent repeated work cycle in an isolated zone of the mine. The use of different aftertreatment control technologies and fuels generated a complex matrix of emissions. While both studies show a relationship between the tailpipe concentration and ambient exposure of the selected gases around the vehicles, the studies also show substantial variability in the ambient concentration levels depending on the sampling location.
Mining-industry; Underground-mining; Diesel-emissions; Diesel-exhausts; Exhaust-gases; Mining-equipment; Motor-vehicles; Metal-mining; Nonmetal-mining; Engineering-controls; Control-technology
630-08-0; 10102-44-0; 10102-43-9
Proceedings of the 14th United States/North American Mine Ventilation Symposium, June 17-20, 2012, Salt Lake City, Utah