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Ignition of PTFE-lined flexible hoses by rapid pressurization with oxygenA high-volume pneumatic-impact system has been used to test PTFE-lined stainless steel braided hoses, in order to characterize the roles played in the mechanism of oxygen-induced ignition by impact pressure, pressurization rate, and upstream and downstream volumes of the hose. Ignitions are noted to have occurred at impact pressures well below the working pressure of the hoses, as well as at pressurization rates easily obtainable through manual operation of valves. The use of stainless steel hardlines downstream of the hose prevented ignitions at all pressures and pressurization rates; internal observations have shown evidence of shock ionization in the oxygen prior to ignition.
Document ID
19910032244
Document Type
Conference Paper
Authors
Janoff, Dwight (NASA White Sands Test Facility NM, United States)
Bamford, Larry J. (NASA White Sands Test Facility; Lockheed Engineering and Sciences Co. Las Cruces, NM, United States)
Newton, Barry E. (NASA White Sands Test Facility Las Cruces, NM, United States)
Bryan, Coleman J. (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1989
Subject Category
ENGINEERING (GENERAL)
Meeting Information
International Symposium on Flammability and sensitivity of materials in oxygen-enriched atmospheres(Las Cruces, NM)
Distribution Limits
Public
Copyright
Other