A few people commented my not use the integrated BOV first rather than bail-out direct to the off board supply. The logic here is consistency across all levels - the onboard BOV is perfect for a quick bail-out if the unit has a catastrophic flood, CO2 hit or something similar, however using the BOV also brings some potential problems. When using a hypoxic diluent like a 10/70 or 10/50, bailing out in the shallow water brings a risk of hypoxia when using the BOV. Unless the loop is completely unbreathable we consider it more appropriate to stay on the loop for a short duration to allow a full bail-out check and gas switch to be performed before changing. Switching to a BOV connected to a 3l tank at depth would generally be more risky than staying on a hyperoxic or slightly wet loop; if the loop is hypoxic then switching to the diluent BOV is almost certain to be worse than staying on the loop - an O2 or diluent flush prior to the bail-out can be performed if required. The above considered, the use of the onboard BOV is a great solution for non-hypoxic dives; we just wanted to teach the same technique from MOD1 onwards.
Watching clown rebreather divers roleplay this stuff is hilarious. If you had a catastrophic failure you wouldn't have the 55hours of stupid signaling you'd be reaching for your bailout immediately and rightly so. So practice that and not fantasies around where you have infinite breath cheat codes
A few people commented my not use the integrated BOV first rather than bail-out direct to the off board supply. The logic here is consistency across all levels - the onboard BOV is perfect for a quick bail-out if the unit has a catastrophic flood, CO2 hit or something similar, however using the BOV also brings some potential problems.
When using a hypoxic diluent like a 10/70 or 10/50, bailing out in the shallow water brings a risk of hypoxia when using the BOV. Unless the loop is completely unbreathable we consider it more appropriate to stay on the loop for a short duration to allow a full bail-out check and gas switch to be performed before changing.
Switching to a BOV connected to a 3l tank at depth would generally be more risky than staying on a hyperoxic or slightly wet loop; if the loop is hypoxic then switching to the diluent BOV is almost certain to be worse than staying on the loop - an O2 or diluent flush prior to the bail-out can be performed if required.
The above considered, the use of the onboard BOV is a great solution for non-hypoxic dives; we just wanted to teach the same technique from MOD1 onwards.
Watching clown rebreather divers roleplay this stuff is hilarious. If you had a catastrophic failure you wouldn't have the 55hours of stupid signaling you'd be reaching for your bailout immediately and rightly so. So practice that and not fantasies around where you have infinite breath cheat codes