Report of Investigations 9061: Method Factors for Anemometer Measurement at Pipe Outlets

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9061
• Personal Author:
  Garcia, Fred ; Cervik, Joseph
• Description:
  Gob holes are routinely used by the mining industry to vent methane from gobs and to prevent it from entering the mine ventilation system. In some cases, flows from gob holes are measured by centering an anemometer on the end of a discharge pipe. These measurements are erroneous and tend to be high by as much as 30 pct. The Bureau of Mines determined method factors (correction factors) for anemometer measurements taken in this manner. Method factors for 4-, 6-, and 8-in (10.2-, 15.2-, and 20.3-Cm) id pipe are 0.68, 0.71, and 0.78 Respectively. Comparisons between horizontal and vertical flows indicated no significant change in mehtod factors. Consequently, the method factors for horizontal pipe flows can be applied to vertical upward flows. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Engineering Explosions Methane Mining Occupational Health Safety Ventilation
• Keywords:
  Pipe-flow; Gas-flow; Ducts; Ventilation; Mining; Mine-ventilation; Mineral-industries; Mine-gases; Mining-industry; Methanes; Methane-drainage; Methane-control; Explosive-gases; Explosive-atmospheres; Underground-mining; Coal-mining; Control-technology; Engineering-controls; Explosion-prevention; Explosive-hazards
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9061, 1987 Jan; :1-10
• Series:
  Mining Publications   ; NIOSH Numbered Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  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:
  15 pdf pages
• NIOSHTIC Number:
  nn:10005324
• NTIS Accession Number:
  PB87-183919
• Federal Fiscal Year:
  1987
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:366660f526f758e19928743d7273db4ed4447babfa333a36419599237a32738f4667e491e3fc65a7cf5583f751922517a39ab31927a5c785acec95c56f045b64
• Download URL:
  https://stacks.cdc.gov/view/cdc/9597/cdc_9597_DS1.pdf
• File Type:
  [PDF - 1.02 MB ]