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Mining Publication: Triboelectric Effects on Polyethylene Methane Drainage Pipelines
Keywords: Coal dust Humidity Pipelines
Original creation date: January 1986
Authors: AA Campoli, J Cervik, RL King
Report of Investigations - January 1986
Download PDF Document (1.08 MB)
NIOSHTIC2 Number: 10005087
U.S. Department of the Interior, Bureau of Mines. Report of Investigations 9017, NTIS No. PB86-229572, 1986; :1-14
The Bureau of Mines performed laboratory experiments to evaluate the triboelectric effect of particulate-laden gas streams on polyethylene pipe at various velocity, humidity, dust-size, and dust-load conditions. Charges in excess of 10 kv were produced on the outside and inside surfaces of laboratory pipe samples when exposed to 40 pct relative humidity (RH) gas stream containing coal dust. However, no charges were produced in laboratory tests that duplicated the over 75 pct RH and dust-free gas streams found in working underground pipelines. Bare copper wire, which is wound around the polyethylene pipe in a 1-ft (31-cm) spacing and grounded, eliminated the charge on the outside surface of the pipe, but not on the inside of the pipe surface.
Image of publication Triboelectric Effects on Polyethylene Methane Drainage PipelinesReport of Investigations - January 1986
Download PDF Document (1.08 MB)
NIOSHTIC2 Number: 10005087
U.S. Department of the Interior, Bureau of Mines. Report of Investigations 9017, NTIS No. PB86-229572, 1986; :1-14
See Also
Airborne Dust Liberation During Coal Crushing
Benchmarking Longwall Dust Control Technology and Practices
Coal Dust Explosibility Meter Evaluation and Recommendations for Application
Coal-Dust Explosion Tests in the Experimental Mine 1919 to 1924, Inclusive
Determining the Spatial Variability of Personal Sampler Inlet Locations
Differential Pressure Response of 25-mm-Diameter Glass Fiber Filters Challenged with Coal and Limestone Dust Mixtures
Evaluation of the Bagged Stone Dust Barrier Effectiveness in a Bord and Pillar Mine
Rock Dusting Considerations in Underground Coal Mines
Status of a Tapered Element, Oscillation Microbalance-Based Continuous Respirable Coal Mine Dust Monitor
Technology News 515 - Float Coal Dust Explosion Hazards
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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