Velocity and Orientation Effects on the 10-mm Dorr-Oliver Cyclone

Details

• Personal Author:
  Cecala, Andrew B. ; Timko, Robert J. ; Volkwein, Jon C. ; Williams, Kenneth L.
• Description:
  The Bureau of Mines conducted a brief laboratory study on the 10-mm-diam Dorr-Oliver nylon cyclone to investigate (1) whether high wind speed (>300 ft/min), or sampler inlet orientation with respect to wind direction, can introduce errors when sampling respirable dust, and (2) whether any such errors can be reduced by using an inlet shield. Photometric mass sensing measurements suggested that as the wind velocity increased, the cyclone sampling directly into the high-velocity airstream tended to oversample, relative to the cyclone sampling in a low-velocity airstream. Orientation of the sampler introduced measurable differences in sampling efficiency at higher wind velocities. A shield placed around the cyclone diminished the effects of wind velocity and sampler orientation on sampler performance. Results of this work offer sufficient evidence to substantiate the need for a more in-depth study. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Dust Mining Occupational Health Particulate Matter Safety
• Keywords:
  Samplers; Sampling-equipment; Mining-industry; Respirable-dust; Sampling-methods; Airborne-dusts
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-11
• NIOSHTIC Number:
  nn:10002807
• NTIS Accession Number:
  PB83-214387
• Citation:
  USBM 1983 Apr; :1-11
• Federal Fiscal Year:
  1983
• Peer Reviewed:
  False
• Source Full Name:
  U.S. Bureau of Mines
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:642bb9b8fdbafc6a300d85f7fbee83243cc5440eb577bcaafdfc303161017550544d41d8c17980ba8ca1294ba26eb568c234d1b4e0a337b5707447c6688cdfc3
• Download URL:
  https://stacks.cdc.gov/view/cdc/237385/cdc_237385_DS1.pdf
• File Type:
  [PDF - 1.42 MB ]