Considering a Bail-out rebreather

johnv

if I'm deep, then I'd have the 2nd CCR mouthpiece necklaced along with an O/C mouthpiece, so if needbe, I can swap immediatly and go semi closed. If I'm using the unit as bail out, rather than intentional use, I then need to switch on the O2 & monitoring, but that can be done whilst on loop.

staging a spare CCR for deco is something that we've been doing for a while, generally we stage a "package" of CCR, O2 and Diluent so that the entire thing can be collected and used for complete deco including gas breaks.

this works fine in a cave, where staging gear on a line is easy, but as Phi helpfully pointed out, I'm no open water diver :-(


John

Marc T

Hi john,

Did you either had to bail out on BOB on real emmergency ( CO2 hit or flooded loop ), or did you either heard somehone done that ( Rick Stanton perhaps ? ).

Thanks for sharing your experience

Cheers

Marc

decoweenie

Yes, the lid shown in the pic doesn't have controller, but I have a few Classic lids that to be used with the unit. Thus eCCR...

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decoweenie

Only in the context that I don't have the restriction of the cave geomery dictating my trim...

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johnv

Neither rick or myself have needed to bail to a 2nd rebreather, however some of the dives in wookey last year I decided to use the c96 to get to & through the second squeeze, then swap onto a Joki for the portion beyond.

Also, for some of the longer multi sump deco dives in france, I regularly use the side mounted rebreather for deco to "share" the stack load between the 2 units, I've not had a problem swapping CCR's at depth but go semi closed for a few minutes on swapping.

As has been said above, you can't throw up on a CCR, so you do need at least some volume of o/c gas just in case.

John

Mdemon

I wonder if it's possible through a BOV?

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decoweenie

As far as passing solid matter thru, but I understand the point of the high amount of gas needed (especially at depth) to "clean" everything afterward: both yourself and the equipment, before normal breathing rate could be resumed.

John, thanks for the tip.

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Marc T

You can't really throw up trough a reg or a BOV, expecting breathing again on it ( possible but really not sure ).
What john said is thats its much more easy to use a reg for that than closing the mouthpiece, throw up and go back to the loop.
Sylain Redoutey ( using a double SCR Rebreather )has been able to do that last year after having a ear DCI during deep deco stop after a verfy deep dive ( near 200 m ) in goul de la tannerie ( france )...but he is Redoutey

Decodiver

I would say no and here is the reason.

When the cocktail hits, it cakes everything in its path.

You will automatically just spit the thing out, you then need something completely uncontaminated to put in your mouth.

There is just no way you would put the mouthpiece back in, no way.

You should see what the cocktail did to the metal on the VR3.

I am not in a position to post pics at present but nobody should underestimate the destructive power of a cocktail, thank god I had the OC gas to get me out of there.

Cheers,

Dave Cooper.

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Mdemon

Glad you had the OC Dave!

APD prevents cocktails with water traps and the scrim. So, should these feature in sidemount BOBs too? (And some OC - I can't imagine anything worse than bailing to your BOB to find it's leaked, you've got a mouthful of cocktail and nowhere to go.)

However, that still leaves IEDCS.

Yes, I did mean throw up through the reg on your BOV. My only concern would be carrots getting into the mushroom valves. I don't think it's going to happen but there is always the hose-squeezing technique if it does.

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"Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"