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Combustion tests under high pressure oxygen: Promoted ignition combustion test versus metallic disk ignition test
Two different test apparatuses are used at BAM (Bundesanstalt fuer Materialforschung- und -pruefung, Federal Institute of Materials Research and Testing) to evaluate the safety of oxygen components: First, the 'promoted ignition combustion test' according to ASTM (American Society for Testing and Materials) G 124 and to EIGA IGC (EIGA (European Industrial Gases Association, Industriegaseverband) Doc (document) 13/02/E, and second, the new 'metallic disk ignition test' that has not been standardised 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 nonmetaltic 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 standardised pneumatic impact tester according to DIN EN 1797 (Deutsche Industrienorm-Europäische Norm 1797).
Combustion tests under high pressure oxygen: Promoted ignition combustion test versus metallic disk ignition test
Two different test apparatuses are used at BAM (Bundesanstalt fuer Materialforschung- und -pruefung, Federal Institute of Materials Research and Testing) to evaluate the safety of oxygen components: First, the 'promoted ignition combustion test' according to ASTM (American Society for Testing and Materials) G 124 and to EIGA IGC (EIGA (European Industrial Gases Association, Industriegaseverband) Doc (document) 13/02/E, and second, the new 'metallic disk ignition test' that has not been standardised 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 nonmetaltic 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 standardised pneumatic impact tester according to DIN EN 1797 (Deutsche Industrienorm-Europäische Norm 1797).
Combustion tests under high pressure oxygen: Promoted ignition combustion test versus metallic disk ignition test
2006
5 Seiten, 5 Bilder, 3 Tabellen, 5 Quellen
Aufsatz (Konferenz)
Englisch
Verbrennungsverhalten , Standardprüfmethode , adiabatische Umwandlung , Hochdruck (Mechanik) , Druckgas , Sauerstoff , metallischer Werkstoff , Entzündbarkeit , Entflammbarkeit , Methodenvergleich , Schicht (Belag) , Stoß (Schlag) , Schlagprüfung , Ventil , Armatur , praktische Untersuchung , Methodenentwicklung , Werkstoffvergleich
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