Situational non-flammable control valves for oxygen service

Dobinson, Chris, Nelson, Peter, & Steinberg, Ted (2012) Situational non-flammable control valves for oxygen service. In Davis, Samuel & Steinberg, Theodore (Eds.) Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres. ASTM International, Bay Shore, New York, pp. 225-232.

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Past work has clearly demonstrated that numerous commonly used metallic materials will support burning in oxygen, especially at higher pressures. An approach to rectify this significant safety problem has been successfully developed and implemented by applying the concept of Situational Non-Flammability. This approach essentially removes or breaks one leg of the conceptual fire triangle, a tool commonly used to define the three things that are required to support burning; a fuel, an ignition source and an oxidizer. Since an oxidiser is always present in an oxygen system as are ignition sources, the concept of Situational Non-Flammability essentially removes the fuel leg of the fire triangle by only utilising materials that will not burn at the maximum pressure, for example, that the control valve is to be used in. The utilisation of this approach has lead to the development of a range of oxygen components that are practically unable to burn while in service at their design pressure thus providing an unparalleled level of first safety while not compromising on the performance or endurance required in the function of these components. This paper describes the concept of Situational Non-Flammability, how it was used to theoretically evaluate designs of components for oxygen service and the outcomes of the actual development, fabrication and finally utilisation of these components in real oxygen systems in a range of flow control devices.

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ID Code: 58636
Item Type: Book Chapter
DOI: 10.1520/STP20120012
ISBN: 9780803175471
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 ASTM International
Deposited On: 25 Mar 2013 22:56
Last Modified: 18 Jul 2017 07:58

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