Retrofitting and Re-Powering as a Control Strategies for Curtailment of Exposure of Underground Miners to Diesel Aerosols

Details

• Personal Author:
  Barone T ; Bugarski, Aleksandar D. ; Hummer JA ; Vanderslice S
• Description:
  A study was conducted to examine the potential of diesel emissions control strategies based on retrofitting existing power packages with exhaust aftertreatment devices and repowering with advanced power packages. The retrofit systems, a diesel oxidation catalyst (DOC) and diesel particulate filter (DPF), were evaluated individually using a US EPA tier 2 (ter 2) engine operated under four steady-state conditions and one transient cycle. The DOC effectively curtailed emissions of CO, and to some extent organic carbon (OC), elemental carbon (EC), and aerosol number concentration. The DPF system offered substantially higher reductions in OC and EC mass and aerosol number concentrations. Both, the DOC and DPF achieved reductions in the aforementioned emissions without adversely affecting emissions of NO2 and nano-sized aerosols. The strategy of repowering with an advanced system was examined using a US EPA tier 4 final (tier 4f) engine equipped with a cooled exhaust gas recirculation system and diesel exhaust fluid-based selective catalytic reduction system, but not with a DPF system. The tier 4f engine contributed substantially less than the tier 2 engine to the EC and OC mass, aerosol number, and CO, NO, and NO2 concentrations. The tier 4f engine was very effective in reducing aerosol mass, NO, and NO2 concentrations, but it was not equally effective in reducing aerosol number concentrations. The implementation of viable exhaust after treatment systems and advanced diesel power packages could be instrumental to the underground mining industry to secure a clean, economical, and dependable source of power for mobile equipment. © 2019, This is a U.S. government work and its text is not subject to copyright protection in the United States; however, its text may be subject to foreign copyright protection. [Description provided by NIOSH]
• Subjects:
  Aerosols Mining Occupational Health Particulate Matter Safety Vehicle Emissions
• Keywords:
  Advanced Engines Author Keywords: Diesel Diesel Exhausts Emission Sources Exhaust After Treatment Exhaust Gases Filters Mobile Equipment Particulates Underground Mines Underground Mining

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• Series:
  Mining Publications
• ISSN:
  2524-3462
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  37
• Issue:
  2
• NIOSHTIC Number:
  nn:20057818
• Citation:
  Min Metall Explor 2020 Apr; 37(2):791-802
• Contact Point Address:
  Aleksandar D. Bugarski, National Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh, PA
• Email:
  abugarski@cdc.gov
• Federal Fiscal Year:
  2020
• NORA Priority Area:
  Mining
• Peer Reviewed:
  True
• Source Full Name:
  Mining, Metallurgy & Exploration
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0450b3aae3d5bd0b30d75458c48e2ff794770fab0c3d7cf6e14c8edacffe24ce81f56efb1cb47ebee2cacce9abf5df880fd46dbb52b160896336b66fc0d3b423
• Download URL:
  https://stacks.cdc.gov/view/cdc/227932/cdc_227932_DS1.pdf
• File Type:
  [PDF - 1.55 MB ]