First cert to use 100% O2

[Akimbo]

The differences seem to differ a bit.

Just as there is no Scuba Police, there is also no consistency. I was decompressing in the 1960s with Oxygen. Anyone can buy Oxygen from industrial gas suppliers and trans fill or use directly off a hose. You will need an adapter to mount a first stage or a hand-loaded regulator to use it straight off the industrial cylinder.

 

[KevinNM]

And it’s useful if you understand what oxygen clean is and what can happen if it isn’t.

 

[Akimbo]

And it’s useful if you understand what oxygen clean is and what can happen if it isn’t.

There is some information and links here:
Post 3: O-Ring Materials, Lubrication, and Maintenance

 

[broncobowsher]

Add in any CCR class as well. One of those two tanks will be 100% Oxygen. (SCR don't count unless it is a pure Oxygen rebreather)

But for most it will be Advanced Nitrox and Deco Procedures. Althought it is only the Advanced Nitrox that is used. The TDI card states (I may be alittle fuzzy since it isn't in front of me) "approved for Nitrox between 21 and 100% Oxygen"

 

[stuartv]

TDI Advanced Nitrox and Deco Procedures (taken combined).

I'll just point out that the reason that 100% O2 is restricted (in the diving environment) is because its toxic below 6m. Hence, you are only using it for decompression, and you need to have good (excellent) buoyancy control.
So, generally, you are looking at pretty advanced diving qualifications.

Perhaps, but for many, access to 100% O2 is obtained as part of their very first technical certification. I guess it's subjective and up to you whether you consider that a "pretty advanced diving qualification."

One of the guys I know here is recreational only (just started diving last summer). He just got Advanced Nitrox (but not Deco Procedures) so that he can do CCR training.

 

[Gareth J]

TDI Advanced Nitrox and Deco Procedures (taken combined).



Perhaps, but for many, access to 100% O2 is obtained as part of their very first technical certification. I guess it's subjective and up to you whether you consider that a "pretty advanced diving qualification."

One of the guys I know here is recreational only (just started diving last summer). He just got Advanced Nitrox (but not Deco Procedures) so that he can do CCR training.

Fair point Stuart, although I was thinking in terms of OC, which granted is a bit narrow (especially since I dive a CCR).

I also accept your point that people often advance to quickly through the qualifications, so its a bit subjective.
I don't always agree that the good old days where that good. 50 + meters on air in the channel !!
That saying, seeing someone take an O2 hit is not funny.

As I said, when I started on technical qualifications I had three, Advanced Nitrox, ERD then Trimix. That was the full suite of tech' courses. I also started tech courses after I had regularly been diving 50-60m on air and running 60+ minutes of stops. None of this I would recommend now. Moving to decompressing on Nitrox, accelerating the deco and trimix at depth all had the effect of making my diving safer. Rather than making my diving more advanced.
I do some times think people advance to quickly - but then its far safer to be deep on trimix than air.
So I truly don't know what the answer is - other than education so that people are aware of the risks. But then people often believe they are brilliant, when they are not.

Gareth

 

[divezonescuba]

Padi it is TEC 45. Second course in the sequence.

 

[DogDiver]

Full Cave after Open Water Instructor for 100% O2. But I used an 80/20 mix for the Great Lakes for years. Just a little safety with a bouncing anchor line.

 

[rgdiver1]

I don't think I have a c-card that actually says OK to use oxygen. Although we used O2 in my NSSCDS full cave, GUE cave 2, and IANTD trimix courses, I was using it before then. As others have said, anyone can obtain O2. You just need to have good enough buoyancy skills to maintain a 20 foot stop. If you can't, you're not ready to use oxygen for decompression.

 

[Michael Guerrero]

Same like many others, 2014 TDI Advanced Nitrox to have 100%, Deco Procedures to use it for accelerated decompression.