Checklists in Rebreather Diving

[Wibble]

Multiple layers of checking can't hurt - there have been plenty of airliner accidents caused by pilots going through checklists but not actioning what they are verbalising from the checklist - flaps extension, landing gear down, etc.

Some great stories by Gareth Lock about exactly that

I've always seen the early phases -- 1 and 2 of 4 -- as being the ones where you put the 'care' in and follow the checklist. Subsequent ones, on the boat/divesite, should simply confirm all's well in the first two phases and get you ready for the dive.

 

[Germie]

I wrote the same. The ok, ok, ok inspiration checklist and then in the water, ****, not checked, haha.

Gareth Lock is a man who does not tell anything new. He just made all we already know a commercial selling item. I have his book, it is crap, haha. Nothing new. He used things like this forum to write his articles. So a clever way of earning money. I had to be this clever

 

[RedSeaDiver2]

Some great stories by Gareth Lock about exactly that

I've always seen the early phases -- 1 and 2 of 4 -- as being the ones where you put the 'care' in and follow the checklist. Subsequent ones, on the boat/divesite, should simply confirm all's well in the first two phases and get you ready for the dive.

Something that I think would reduce the number of CCR incidents involving jumping in with cylinders turned off would be the widespread use of these sorts of valve handles - Vindicator Valve Knobs - just before you jump you could ask someone to confirm that you have two greens. I don't know how many lives that would have saved but it would be a few.

 

[RedSeaDiver2]

I wrote the same. The ok, ok, ok inspiration checklist and then in the water, ****, not checked, haha.

Even in aviation it happens surprisingly more often than you would believe possible - especially as there are usually two pilots involved, and it is only usually picked up during the accident investigation.

For something a little different some pilots recently managed to do the aviation equivalent of failing to turn the diving cylinder valve all the way on - https://www.atsb.gov.au/media/news-...likely-not-fully-released-prior-rejected-take

 

[berndo]

Why not use it?

Ask him.

I keep my pre-jump checklist in my head.

 

[berndo]

Could someone please explain the setup here?

You can google gue rebreather configuration.

Vindicator knobs are BS. Just don't cut corners... it's not that hard to follow a checklist.

 

[OTF]

Something that I think would reduce the number of CCR incidents involving jumping in with cylinders turned off would be the widespread use of these sorts of valve handles - Vindicator Valve Knobs - just before you jump you could ask someone to confirm that you have two greens. I don't know how many lives that would have saved but it would be a few.

They are prone to jamming with sand.

 

[Germie]

Something that I think would reduce the number of CCR incidents involving jumping in with cylinders turned off would be the widespread use of these sorts of valve handles - Vindicator Valve Knobs - just before you jump you could ask someone to confirm that you have two greens. I don't know how many lives that would have saved but it would be a few.

I don't think this helps. There are also a lot of solo ccr divers. And if people forgot things or are lazy, this will still happen with these valves.
The biggest problem is that we are all human.

 

[J-Vo]

1. Build/analyse
2. Close/check
3. Turn on/get into kit
4. Pre-jump/standing at the gate

IMHO:

One, Two, and Three are to make sure the dive happens, 4 is to save you life. You can skip the first three all day long and 4 should capture the mistakes. This is why I believe 4 must be written and must be convenient. I'm simply not going to get out a clipboard and checkoff a page of items after I have all my gear on.

 

[Wibble]

IMHO:

One, Two, and Three are to make sure the dive happens, 4 is to save you life. You can skip the first three all day long and 4 should capture the mistakes. This is why I believe 4 must be written and must be convenient. I'm simply not going to get out a clipboard and checkoff a page of items after I have all my gear on.

I had a printed checklist (a plastic 'slate' with boltsnap comes with a Revo). Alas it broke.

The challenge is you're fully kitted with bailout(s) attached, lights, wearing gloves, etc. Sitting, maybe standing in circa 100kg/220 lbs of kit on a swaying boat.

I've turned my final check into a 3 second "ceremony" -- left to right (suit dump+inflate; wing inflate; inject dil+oxygen; PPO2>0.7; AI gas pressures). Bare essentials to ensure you have buoyancy and can breathe when you jump in. Can be done standing on the gate with one hand.