Estimation of safety factors attributable to electrode materials in the spark test apparatus.
Peterson JS; Cawley JC
Proceedings of the 24th International Conference of Safety in Mines Research Institutes, September 23-28. 1991, Donezk, USSR. 1991 Sep; :75-84
Data that define the relative probability of spark ignition between common materials may estimate actual explosion hazards more precisely for realistic mining situations than do data generated using cadmium electrodes in the spark test apparatus. The U.S. Bureau of Mines has estimated the probability of spark ignition arising from the use of aluminum, brass, copper, lead, tin, and stainless and cold-rolled steel as disk electrodes in 8.3 pct ch4- air using the standard spark test apparatus. By comparing currents and voltages that give the same probability of spark ignition, a safety factor relative to cadmium may be associated with each material. Partial results for resistor and inductor circuits were summarized in the Conference Proceedings of the 23rd International Conference of Safety in Mines Research Institutes. Complete results, including capacitor circuits, are presented here.
Electrical safety; Electrical systems; Electrical equipment; Mine safety; Mining; Mining industry
OP; Conference/Symposia Proceedings
Proceedings of the 24th International Conference of Safety in Mines Research Institutes, Donezk, USSR