most rbs are using 3L or 2L tanks..
most rbs see less than 200bar O2 starting pressure (no booster = 140bar? max)
at time of bail if you have significant deco the tank pressure isnt likely to be very much. (100bar max typically?)
personally I carry/stage adequate bailout (especially shallow tanks which are the easiest to stage). I just dont rely/consider the
variable small volume in my on boards for bail - i see that akin to carry a band-aid into a mine field
i think if people are considering the usefulness of that little 300L of O2 for bail gas then they simply arent carrying enough real bail gas! Just my opinion
I like to keep the 2 systems seperate OC and Rebreather. Blow a hose or o-ring with a linked system on a deep dive and you could lose much of your O2 supplies.
Trust me if your at 6m and you are running low on off board O2 bail gas you can find a way to remove your Rebreather take out the O2 tank and shove a reg on it - I know Ive practiced it
he he a few years ago diving eagles nest with CV he had forgoten to bring the bail O2 so before the dive we dry ran through what we would do if someone bailed. How one diver would assist removal of O2 tank from one of the RBs and shove a reg on it
Stupid I agree but in the real world faced with a long drive back and missed diving day....
we went ahead.