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Cite this document
A serious threat to life and property in many industries is the hazard of a pressurized hydraulic line rupturing, causing the escaping fluid to enter the flame of a fuel burner. The test described here simulates this danger and evaluates the fire resistance of hydraulic fluids under such conditions. The most important factor in the test equipment is the provision of a broad range of spray velocities and densities. The spray equipment is described and illustrated, and the test procedure is outlined. Data are presented from tests of one mineral oil, three water-in-oil emulsions, six water-glycol fluids, and nineteen synthetic organic fluids. Selected 35-mm colored slides illustrating the equipment and test conditions were made into black-and-white enlargements for this paper. In this process, much of the contrast was unfortunately lost. Only four synthetic organic fluids failed to ignite under one or more test conditions. All three water-in-oil emulsions tested ignited. However, when the fluid stream is of sufficient density and velocity, a typical mineral-oil hydraulic fluid will not ignite.
Rowand, H. H.
Aluminum Company of America, New Kensington, Pa.