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ISSN: 1546-962X
Published Online: 1 May 2006
Page Count: 5

Combustion Tests Under High Pressure Oxygen: Promoted Ignition Combustion Test Versus Metallic Disk Ignition Test
Binder C, Kasch T, Lehné S, Beck U, Weise M, Sahre M

Abstract
Two different test apparatuses are used at BAM to evaluate the safety of oxygen components: First, the promoted ignition combustion test according to ASTM G 124 [1] and to EIGA IGC Doc 13/02/E [2], and second, the new metallic disk ignition test that has not been standardized yet. The standard test method ASTM G 124 allows a ranking of metallic materials for use at high pressure oxygen. However, the transfer of those test results to valves and fittings in real-life situations is rather complex. The metallic disk ignition test, developed at BAM, is more practice oriented and uses metallic disks of different thicknesses of the investigated material. A commonly used nonmetallic sealing ring is placed in front of this disk and serves as an igniter. This test array is then exposed to high pressure gaseous oxygen impacts in a standardized pneumatic impact tester according to DIN EN 1797 [3].

Keywords:
adiabatic compression, pneumatic impact, flammability, high pressure oxygen, metallic materials, promoted ignition, coatings

Paper ID: JAI13532
DOI: 10.1520/JAI13532
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