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At 9:16 PM 7/18/95, Dave Schubert wrote:
>Scott,
>
>In regards to your suggestions that would possibly take care of hypoxia but
>what of hyperoxia concerns with the unit?

To recap, I said:

>>If all you want to protect against is injection failure, all you need to
>>know is that gas is flowing from the O2 bottle into the bag.

Are you suggesting that hyperoxia might result because the hole in a
laser drilled ruby suddenly got bigger?  I'd think an overpressure
relief on the first stage regulator would protect against sudden
large increases in intermediate gas pressure, right?

I agree with you in essence that hyperoxia is a concern in any semi-closed
system, however that was not the problem I was discussing, nor was scrubber
failure (hypercapnea).  That being said, I'd think that a flow *rate*
sensor coupled with overpressure relief might give you a pretty good
safety margin against the posibility of a hyperoxic mix.

For god's sake, hasn't anybody patented this stuff?  Maybe I should
shut up ;).

Scott.

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