Checklists in Rebreather Diving

[Underwater Tourist]

I'm interested if written lists are the only acceptable way?

That’s one of the points of the video

Every clinician thinks “I know that, I will remember this, I of all people won’t forget, I am smart I don’t need congnitive aids, they are for housewives and plummers” yet the data disagrees

The bottom line is that there is a process that literally takes 60 seconds, costs zero dollars, doesn’t require any training, yet significantly decreases the risk of an accident. Why not use it?

Going of memory, SM also mentioned that had ccr divers checked that their ccr is on, o2 valve is opened, and inflation drysuit is plugged in, there literally would have been 1/3 less ccr deaths. This conclusion comes from data, and it is not a figure of speech

Edit: the first time I saw that video it had a very profound impact on me, I can’t recommend enough viewing it. Not just for scuba diving

 

[211ratsbud]

If you are thinking of a bat signal, that only works at night.
View attachment 784802
In all seriousness, what are alternatives to written lists?

Well maybe it's a matter of semantics but;

I've seen a lot of printed on vinyl pre jump check lists on shearwater hand sets.

Im a captain on a charter, I see quite a few technical and CCR divers covering these brief bulleted lists before they jump.

I'm saying as opposed to a ink pen and check mark type list.

It would be cool if SW allowed a start up check list. The Meg 15's had one and it went into the logs.

 

[wetb4igetinthewater]

Well maybe it's a matter of semantics but;

I've seen a lot of printed on vinyl pre jump check lists on shearwater hand sets.

Im a captain on a charter, I see quite a few technical and CCR divers covering these brief bulleted lists before they jump.

I'm saying as opposed to a ink pen and check mark type list.

Ah gotcha. With my atrocious handwriting, I prefer printed checklists, laminated and then mounted on my arm with bungee cord.

It would be cool if SW allowed a start up check list. The Meg 15's had one and it went into the logs.

I will try a Meg rebreather one day.

 

[azstinger11]

Well maybe it's a matter of semantics but;

I've seen a lot of printed on vinyl pre jump check lists on shearwater hand sets.

Im a captain on a charter, I see quite a few technical and CCR divers covering these brief bulleted lists before they jump.

I'm saying as opposed to a ink pen and check mark type list.

It would be cool if SW allowed a start up check list. The Meg 15's had one and it went into the logs.

Ah gotcha. With my atrocious handwriting, I prefer printed checklists, laminated and then mounted on my arm with bungee cord.

I will try a Meg rebreather one day.

Liberty also does handset based CCR checklists, can sort of see in action here

 

[RedSeaDiver2]

I would say as always take what works for the dive you want to make. But there is not a right or wrong.

Exactly - people with your attitude are the ones I want for our 2000 year old wreck exploration.

 

[RedSeaDiver2]

Is anyone running 7 litre / "LP50" onboard dilout cylinders with valves down? How does it dive & trim?

It's not surprising the DIR / GUE manifolded twinset CCR has the valves up. It might even trim the rig well. I'm not sure I would want two other additional valves right next to my oxygen valve, mixups could happen. But those upright valves are definitely asking for a beating. Maybe that's why they need all the extra valves

It probably makes sense for packing boat divers onto a high end boat (with a lift) since there's one less extra bailout cylinder to wrangle.

How much longer is the GUE CCR checklist?

Could someone please explain the setup here?

 

[Germie]

Exactly - people with your attitude are the ones I want for our 2000 year old wreck exploration.

So, when is the exploration? LOL

 

[RedSeaDiver2]

So, when is the exploration? LOL

Best I answer that one by PM

 

[Wibble]

Well maybe it's a matter of semantics but;

I've seen a lot of printed on vinyl pre jump check lists on shearwater hand sets.

Im a captain on a charter, I see quite a few technical and CCR divers covering these brief bulleted lists before they jump.

I'm saying as opposed to a ink pen and check mark type list.

It would be cool if SW allowed a start up check list. The Meg 15's had one and it went into the logs.

There's different levels of checking depending on the "phase" of the use:

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

1 and 2 may be done at the same time; may be split. These really suit a fairly comprehensive paper checklist using a a marking device, such as pencil or pen, and can form an audit/history trail of settings, e.g. cell millivolts, cell changes, other kit replacements, O-rings, etc.

3 can be done following an abbreviated checklist. Alternatively using a well-practised process (ceremony?).
For example:

• Kit up -- suit on, catheter and heating connected, fill pockets, gloves+hood+mask+fins in your special place...
• Bailouts -- move to donning position, turn on, breathe
• Stand and face the unit -- turn on the suit inflate and position the hose; position bailout connector hose; turn on dil and breathe to fire the ADV manually inject; turn on the oxygen, manually inject dil & O2
• Get in the unit -- hood, mask and fins on; untie the unit; climb in and buckle up (nothing caught); attach drysuit hose, open drysuit dump, inject; quick squirt into wing; attach heater connector; attach computer(s) on arms; turn on computers; mouthpiece in, breathe and dump through nose, change setpoint to 0.7 and check solenoid injects, manually inject O2 to get it above 0.8, start pre-breathe; check pressures; attach bailout(s) including BOV hose; gloves on

4 Pre-jump can be left to right check: bailout(s) connected and attached; suit dump open, inject suit; inject wing (have buoyancy); inject dil (quick squirt); inject oxygen (longer squirt) (can breathe); final check for fins, gloves, mask.

(I do 4 twice; just before standing up and waddling to the gate, and when standing at the gate before jumping)


Hey; we're all different. As long as there's multiple layers of checking problems get caught.

 

[RedSeaDiver2]

There's different levels of checking depending on the "phase" of the use:

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

1 and 2 may be done at the same time; may be split. These really suit a fairly comprehensive paper checklist using a a marking device, such as pencil or pen, and can form an audit/history trail of settings, e.g. cell millivolts, cell changes, other kit replacements, O-rings, etc.

3 can be done following an abbreviated checklist. Alternatively using a well-practised process (ceremony?).
For example:

• Kit up -- suit on, catheter and heating connected, fill pockets, gloves+hood+mask+fins in your special place...
• Bailouts -- move to donning position, turn on, breathe
• Stand and face the unit -- turn on the suit inflate and position the hose; position bailout connector hose; turn on dil and breathe to fire the ADV manually inject; turn on the oxygen, manually inject dil & O2
• Get in the unit -- hood, mask and fins on; untie the unit; climb in and buckle up (nothing caught); attach drysuit hose, open drysuit dump, inject; quick squirt into wing; attach heater connector; attach computer(s) on arms; turn on computers; mouthpiece in, breathe and dump through nose, change setpoint to 0.7 and check solenoid injects, manually inject O2 to get it above 0.8, start pre-breathe; check pressures; attach bailout(s) including BOV hose; gloves on

4 Pre-jump can be left to right check: bailout(s) connected and attached; suit dump open, inject suit; inject wing (have buoyancy); inject dil (quick squirt); inject oxygen (longer squirt) (can breathe); final check for fins, gloves, mask.

(I do 4 twice; just before standing up and waddling to the gate, and when standing at the gate before jumping)


Hey; we're all different. As long as there's multiple layers of checking problems get caught.

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.