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***jradomski*** · 12th October 2006, 13:18

Quote: (Originally Posted by EBT)

Its ok at a push, but be aware that you'll tend to concentrate argon in the output too (which is very narcotic).

I don't agree totally..

The concentration of Argon and its effect depends on multiple factors

Time Between loop flushes
Work rate (frequency of injections)
and
Depth

The deeper you go the less effect the argon from oxygen has on the loop.. In many places Oxygen from PSA systems is the only way to get oxygen..

There always will be some additional narcotic potential in the gas, but luckily where its the most critical the effect is the smallest.. Unless the work loads are REALLY high a simple loop flush every 15 minuets will keep the amount of argon in the loop quite small (at any depth), on deep dives it could be extended quite alot more..

I do a long presentation on this in my Tech and Trimix rebreather proggrams..

12th October 2006, 13:18	#3 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,126	Re: Pressure Swing Absorption, 95% O2? Quote: (Originally Posted by EBT) Its ok at a push, but be aware that you'll tend to concentrate argon in the output too (which is very narcotic). I don't agree totally.. The concentration of Argon and its effect depends on multiple factors Time Between loop flushes Work rate (frequency of injections) and Depth The deeper you go the less effect the argon from oxygen has on the loop.. In many places Oxygen from PSA systems is the only way to get oxygen.. There always will be some additional narcotic potential in the gas, but luckily where its the most critical the effect is the smallest.. Unless the work loads are REALLY high a simple loop flush every 15 minuets will keep the amount of argon in the loop quite small (at any depth), on deep dives it could be extended quite alot more.. I do a long presentation on this in my Tech and Trimix rebreather proggrams.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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