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Mining Publication: Experimental Study of Flame Spread on Conveyor Belts in a Small-scale Tunnel
Keywords: Conveyors Fires Methane
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: February 2007
Authors: L Yuan, CD Litton
Conference Paper - February 2007
Download PDF Document (0.37 MB)
NIOSHTIC2 Number: 20031658
Fires and Materials 2007 - 10th International Conference, January 29-31, 2007, San Francisco, California. London: Interscience Communications, 2007 Feb; :1-10
This paper presents experimental results for conveyor belt flame spread from tests conducted in a small-scale tunnel. The purpose of this study is to investigate the effects of belt type, ventilation velocity, belt surface-to-roof distance and ignition source power on the flame spread properties. The tunnel used was 4.9 m long by 0.46 m square with the ventilation velocity ranging from 0.7 to 3.2 m/s. The ignition source was an impinged methane jet burner with heat output ranging from 7 to 21 kW. The belts tested included non-fire resistant rubber belts, fire-resistant rubber belts, fire-resistant neoprene belt and fire-resistant PVC belt with belt samples measuring 0.23 m wide by 2.5 m long. Experimental results show that with a ventilation velocity of 1.02 m/s all conveyor belts could be ignited, and that with sufficient ignition source power, flames spread the full length of the belt sample. The data showed a coupling effect of the ventilation air velocity and the belt surface-to-roof distance on the flame spread rate. For instance, flames could not spread with a ventilation velocity higher than 1.52 m/s and a surface-to-roof distance of 0.22 m. The use of the measured CO/CO2 ratio as an indicator of combustion stoichiometry is also discussed.
Image of publication Experimental Study of Flame Spread on Conveyor Belts in a Small-scale TunnelConference Paper - February 2007
Download PDF Document (0.37 MB)
NIOSHTIC2 Number: 20031658
Fires and Materials 2007 - 10th International Conference, January 29-31, 2007, San Francisco, California. London: Interscience Communications, 2007 Feb; :1-10
See Also
A 20-Liter Furnace Test Method to Determine the Combustion Gas Toxicity of Conveyor Belts
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CFD Modeling of Fire Spread Along Combustibles in a Mine Entry
Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
Development and Application of Reservoir Models and Artificial Neural Networks for Optimizing Ventilation Air Requirements in Development Mining of Coal Seams
Evaluation of Safety Shutoff Valve System on Methane Gas Pipelines Under Mine Fire Conditions
Flammability of Wider Conveyor Belts Using Large-scale Fire Tests
Impact of Air Velocity on the Detection of Fires in Conveyor Belt Haulageways
Remote Methane Sensors
Smoke, Carbon Monoxide, and Hydrogen Chloride Production from the Pyrolysis of Conveyor Belting and Brattice Cloth
Page last reviewed: April 17, 2015
Page last updated: April 17, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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