Report of Investigations 9202: Control of Airborne Respirable Dust in the Face Area with Water Sprays Using a Full-Scale Laboratory Model

Details

• Journal Article:
  MISSING
• Personal Author:
  Cheng, Lung ; Courtney, Welby G.
• Description:
  This report presents the results of a Bureau of Mines laboratory investigation of the effect of water sprays in reducing respirable dust that escaped the face area of a full-scale wooden model of a mine entry containing a wooden model of a ripper-type continuous mining machine and exhaust brattice. Areas examined were (1) the general effectiveness of a low-pressure water spray system mounted on top of the mining machine boom, a high-pressure spray system mounted under the boom, and the combined top- and bottom-spray systems, and (2) the effect of these three spray systems on the capture of coal dust particles of different sizes. Dust was injected into a sump cavity at the face. Airborne respirable dust concentration was measured behind the brattice with a personal sampler and cyclone, and particle size distribution was measured with a cascade impactor. When used alone, the top-spray system captured about 55 pct of the respirable dust in the face area and the bottom-spray system captured 60 pct; the capture efficiency of each system is decreased when they are used simultaneously. From a mass-concentration viewpoint, each spray system preferentially captures larger dust particles. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Dust Mining Occupational Health Particulate Matter Safety
• Source:
  MISSING :11 pages
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  United States
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  16 pdf pages
• NIOSHTIC Number:
  nn:10006209
• Federal Fiscal Year:
  1988
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0ac5fb786155b3614661d3860c86d64454f3b48b3d54f45f4dff30661eaabfa70c84df963cfebe31957afedf578108266e5e79c8e259311417b62c9b7681cde1
• Download URL:
  https://stacks.cdc.gov/view/cdc/10383/cdc_10383_DS1.pdf
• File Type:
  [PDF - 6.56 MB ]