Posted by ChrisM on November 10, 2004 at 12:38:47:
In Reply to: Luxfer says O2 > 23,5% needs O2 cleaning posted by Chris on November 10, 2004 at 11:02:50:
but they take great pains to explain the reason they reject the 40% rule on their site, concluding:
-All key U.S. regulatory and gas industry references except one advocate an oxygen threshold of 21% to 25%.
-Luxfer is a member of the Compressed Gas Association and therefore supports the CGA-specified threshold of 23.5%. Furthermore, Luxfer defers to CGA on all safety matters related to oxygen handling and containment, as do OSHA and DOT.
-As an international manufacturer, Luxfer works with regulatory authorities and industry associations around the world—the overwhelming majority of which support a threshold value from 21% to 25% (for example, this is true in the United Kingdom, Australia, France, Germany and Japan).
-United Nations compressed air packaging guidelines (see UN 1002) indicate that when compressed air contains oxygen as the only oxidizing gas and the oxygen concentration exceeds 23.5%, then the entire gas mixture must be listed as an oxidizing gas.
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