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Mining Publication: Influence of Electrode Material on Spark Ignition Probability
Keywords: Ignitions Metals Spark prevention Sparks
Original creation date: January 1992
Authors: JS Peterson
Report of Investigations - January 1992
Download PDF Document (2.61 MB)
NIOSHTIC2 Number: 10011241
U.S. Department of the Interior, Bureau of Mines, Report of Investigations 9416, 1992 Jan:1-19
The testing procedures of the U.S. Mine Safety and Health Administration specify that intrinsic safety acceptance tests be conducted using a standard tungsten-cadmium electrode configuration in the breakflash apparatus. However, in realistic mining environments, other materials may be more likely sources of sparking. Information defining the probability of spark ignition between common materials such as aluminum, brass, copper, lead, tin, cold-rolled steel, and stainless steel is of more practical value in determining ignition hazards. The U.S. Bureau of Mines has completed an investigation of the influence of material on the ignition probability using the breakflash apparatus. By comparing ignition currents or ignition voltages corresponding to a probability of one ignition per thousand sparks to those found previously for cadmium, a margin of safety may be estimated for each material. This report presents the results of an investigation into the influence of disk electrode material on the probability of ignition.
Image of publication Influence of Electrode Material on Spark Ignition ProbabilityReport of Investigations - January 1992
Download PDF Document (2.61 MB)
NIOSHTIC2 Number: 10011241
U.S. Department of the Interior, Bureau of Mines, Report of Investigations 9416, 1992 Jan:1-19
See Also
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Explosion Temperatures and Pressures of Metals and Other Elemental Dust Clouds
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Ignition of Methane-Air Mixtures by Laser Heated Small Particles
Methane Control at Continuous Miner Sections
Methane-Air Mixtures Ignited by CW Laser-Heated Targets on Optical Fiber Tips: Comparison of Targets, Optical Fibers, and Ignition Delays
NIOSH Hazard ID 4 - Ignition Hazard from Drilling into Sealed Frames of Agricultural Equipment
Overview of Dust Explosibility Characteristics
Rock and Minerals Make up Your World: Rock and Mineral 10-Specimen Kit Companion Book
Technology News 473 - The Explosion Hazard From Hydrogen Gas Generation Inside Sealed Frames
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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