For the record, I have seen the err of my way and will not go the gas distribution block method.
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I don't know about your cave class, but in ours, we were required to exit at the same speed or faster that we went in while sharing gas in a zero-vis scenario. If you're taking twice as long, then something is very wrong.
Remember I said I wouldn't recommend it and probably no one doing cave or technical dives would dive with you either.
UTD's 10 Covenants - Unified Team Diving
5. Consistent Modular Equipment Configuration An equipment configuration that is consistent, scalable and interchangable within the team for all types of diving and diving environments.
UTD:5. Consistent Modular Equipment Configuration – An equipment configuration that is consistent, scalable and interchangable within the team for all types of diving and diving environments.
At the expense of additional failure points, poorly placed and poorly thought out additional gear, and additional/non-standardized(read as inconsistant, non-scalable, and non-interchangable) steps towards a self rescue.
My experience is no where near yours but here's a question: The so-called additional failure points, poorly placed and poorly thought out additional gear etc etc....
My experience is no where near yours but here's a question: The so-called additional failure points, poorly placed and poorly thought out additional gear etc etc as you put it, are they theoretical or have you actually dove with them and find it so? Did you come to this conclusion based on a, again, theoretical comparison or did you actually try both configuration in a team to come to this conclusion?
Case in point as an example but off-topic: When the Gracies were no one famous, everyone said their system was ineffective and idealistic and that they (those who were talking) will knock any Gracies out before they can even attempt a shoot. Those are theoretical. Once in the ring and/or on the mat, the talkers ALL got choked out or tapped out on a submission hold.
No, I am not flaming nor attacking, just asking if you based your conclusion on real world experience or theory.
. . . CCR Cave Divers seem to be doing okay with QC6 or QC4 connections into distribution blocks --what makes them so prohibitively unreliable or unapplicable to the Z-system SM???At the expense of additional failure points, poorly placed and poorly thought out additional gear, and additional/non-standardized(read as inconsistant, non-scalable, and non-interchangable) steps towards a self rescue.
Does anyone see the WIN in this?
I sures hell don't.
You don't turn-off ALL your gas . . .only the tank with the downstream leak and disconnect its QC6 feed into the distribution block. You have your buddy there for long-hose donation OR tank swap-out if y'all need to negotiate a restriction on egress. As a last resort, you can always remove & replace that first stage reg with the downstream leak with another functional first stage from an empty tank (and hope you can clear & breath from it). . .Any system where the solution to fixing a leak involves turning off all your gas (still laughing at this) is poorly thought out. Does anyone need to dive it to be sure of that?