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Khoo wrote: > "It is safe to breathe Hydrogen/Oxygen mixture? > > Assuming that you are able to mix Hydrox instead of Heliox, what will > be > it's decompression schedule compare with Heliox for the same profile? Esat Atikkan wrote: > The French have worked on Hydrox for years but, if I recollect > correctly, have given up on it. > > Obviously the explosion potential of H2/O2 mixes is an issue, though > not surmountable. Gas mixtures like H2 + O2 are only explosive if the ratio is in a certain range. Increase the O2 enough, or the H2 enough, and it is safe. In diving applications, you have to ensure that the O2 is below a certain level at all times. I forget what that level is - I think 2%. Of course, at fO2 = 0.02, you have to be quite deep before you can start using it. We want ppO2 > 0.16 ATA, so if those numbers are right (this is all from memory), then you would need to be at 8 ATA before breathing the mix. 8 ATA is 231 feet. If my memory is right on the numbers, that makes Hydrox really only suitable for saturation diving. Hydrox is also good with milk ... (joke for U.S. and its cultural colonies only). Wrolf -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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