The autoignition temperature and ignition delay times for hydrogen-air mix tures and methane-air mixtures as a function of concentration were measured in the Bureau of Mines 1.2-L ignitability furnace. The data shows that the minimum autoignition temperature (MAIT) values obtained for hydrogen-air and methane-air mixtures are in excellent agreement with previously reported AIT values of other researchers. There is also good agreement in the gas con centrations at which the minimum AITs occurred.
Conti, R.S., K.L. Cashdollar, M. Hertzberg and I. Liebman.Thermal and Electrical Ignitability of Dusts Clouds , BuMines RI 8798, p. 40 ( 1983).
2.
Conti, R.S., M. Hertzberg, F.T. Duda and K.L. Cashdollar ."Rapid-Sampling System for Dusts and Gases,"Review of Scientific Instruments , 54:104-108 (1983).
3.
Hertzberg, M. , R.S. Conti and K.L. Cashdollar.Electrical Ignition Energies and Thermal Autoignition Temperatures for Evaluating Explosion Hazards of Dusts, BuMines RI 8988, p. 41 (1984).
4.
Conti, R.S. and M. Hertzberg."Thermal Autoignition Temperatures from the 1.2-L Furnace and Their Use in Evaluating the Explosion Potential of Dusts,"Industrial Dust Explosion Symposium, June 1986, Pittsburgh, Pa., ASTM, STP 958 (1987).
5.
Hertzberg, M. , R.S. Conti and K.L. Cashdollar."Spark Ignition Energies for Dust-Air Mixtures: Temperature and Concentration Dependencies,"Twentieth Symposium (International) in Combustion , The Combustion Institute, Pittsburgh, Pa., pp. 1681-1690 (1985).
6.
Reid, I.A.B. , C. Robinson and D.B. Smith."Spontaneous Ignition of Methane: Measurements and Chemical Model,"Twentieth Symposium (International) in Combustion, The Combustion Institute, Pittsburgh, Pa., pp. 1833-1843 (1985 ).
7.
Robinson, C. and D.B. Smith."The Auto-Ignition Temperature of Methane,"Journal of Hazardous Materials , 8:199-203 (1984).
8.
Zabetakis, M.G.Flammability Characteristics of Combustible Gases and Vapors, BuMines Bulletin627, p. 121 (1965 ).
9.
Zabetakis, M.G.Research on the Combustion and Explosion Hazards of Hydrogen-Water Vapor-Air Mixtures, BuMines Final Report 3543, prepared for Westinghouse Electric Corp., AECU-3327, 11 pp. (September 4, 1956).
10.
Furno, A.L. , A.C. Imhof and J.M. Kuchta."Effect of Pressure and Oxidant Concentration on Autoignition Temperatures of Selected Combustibles in Various Oxygen and Nitrogen Tetroxide Atmospheres,"J. Chemical and Eng. Data, 13(2):243-249 (April 1968).
11.
Kuchta, J.M.Investigation of Fire and Explosion Accidents in the Chemical, Mining, and Fuel-Related Industries-A Manual, BuMines Bulletin680, 84 pp. (1985).
