IANTD EAN vs PADI EAN courses

[hroark2112]

Thanks for the well intended comments, yes the idea is to formulate questions during the course and I already gather some since I'm confuse about the time limits of exposure at different PPO (NOAA) , the depth limits I understand as well as the NDL, like RJP said we are limited here with 32% EAN so I have to work around that.

There are 2 different kinds of oxygen exposures to watch out for. One is your PO2 and the other is your O2 CNS%. You're confusing the two in your posts.

 

[wedivebc]

There are 2 different kinds of oxygen exposures to watch out for. One is your PO2 and the other is your O2 CNS%. You're confusing the two in your posts.

Oxygen exposure is all about PO2 maybe it's you who is confused.

 

[hroark2112]

Oxygen exposure is all about PO2 maybe it's you who is confused.

My apologies, as I am not a CCR Instructor or Course Director, I must be confused.

I guess this table is my imagination...

 

[NAM001]

I took the iantd rec trimix course and it had similar requirements. my nauii nitrox was accepted.

I'm about to do a Nitrox course with PADI, unfortunately it appears there is no Advance EAN teaching here on the Island, I have set both of my DC to 1.5 PPO a notch above the coservative 1.4 PPO, looking at IANTD courses the EAN course is set to allow divers to reach 39m depth, but it doesn't mention the amount of exposure of PPO, in their Advance EAN course they mention 1.5 PPO and 42m Depth and state that you need to have taken the EAN and Deep Specialty with them it doesn't say "equivalent".

My question is that looking at both of my DC, with the 1.4 PPO you can't reach 39m with 32% EAN, with 1.5 PPO my DC's allows me 35.5m Depth, is IANTD using other non conventional mixes ( 32 and 36% ) to reach 39m depth with as well 1.5 PPO exposure for there EAN course ???

IANTD, will not allow me to take "Advance EAN" with them if I don't take thier EAN and Deep speciality courses or will they accept Deep Speciality and EAN with other Agencies ( since there is no mention of "Equivalent" courses ) ???

Any one that had taken the IANTD and PADI as well ???, it seems that they are very different since their depth's limitations of each agency course programs are not the same, any hints on this ???

 

[wedivebc]

My apologies, as I am not a CCR Instructor or Course Director, I must be confused.

I guess this table is my imagination...

View attachment 200835

The table you posted relates to CNS toxicity, the other type of toxicity (whole body) relates to pulmonary effects but both are products of high PO2 exposure and time.

 

[Oldbear]

...
An additional resource that you might want to review - before your class - is an article in the DAN Alert Diver journal in December 2013: Alert Diver | Understanding Oxygen Toxicity. I now assign this as required reading before my PADI Enriched Air class. (In particular, note the very last paragraph.)
...

Great DAN article. I am going to use it in my next class.

 

[ScubaInChicago]

I like to plan my dives with a 1.2 ppO2 max at depth during the working portion of a dive. 1.0 and lower is used for the really deep stuff to keep from racking up the CNS clock.

 

[hroark2112]

The table you posted relates to CNS toxicity, the other type of toxicity (whole body) relates to pulmonary effects but both are products of high PO2 exposure and time.

So it's not "all about PO2" right? As I said earlier, there are 2 kinds of O2 exposure to be concerned about.

Next time read before deciding to be a condescending prick.

 

[Lorenzoid]

So it's not "all about PO2" right? As I said earlier, there are 2 kinds of O2 exposure to be concerned about.

Next time read before deciding to be a condescending prick.

Count me as confused. Are you using the term "PO2" to mean "pulmonary oxygen" (toxicity)? In your earlier post you said: "There are 2 different kinds of oxygen exposures to watch out for. One is your PO2 and the other is your O2 CNS%." That would make sense if "PO2" is referring to "pulmonary" or whole-body oxygen (toxicity). Maybe there is confusion (at least for me) between the terms "PO2" and "PPO2"?

 

[hroark2112]

From my CCR training, it was pounded into me to "Always know your PO2!" At any time in the dive I needed to know what it was (within a reasonable amount). That is intended to ensure that I am always within range of my target PO2 (1.2 during the dive 1.6 if possible during deco).

Knowing your cumulative exposure (oxygen toxicity units) is also important, and takes into account both PO2 and time.

My earlier comment was that it sounds like the OP is muddling the two together.