Does this sounds right? [Nitrox course]

[Bubble Junky]

I think the OP's more concerned with having the MOD & O2 exposure calculations checked than buoyancy issues. I don't think it's unreasonable to want to have the plans checked by an instructor.

 

[ZzzKing]

With no PADI dive requirement now, there's obviously no analysis or planning requirement for that first Nitrox dive you'll eventually be taking.

If there is no dive as part of the class, then you just analize the cylinders and you're done.

There is an analysis requirement for every EAN dive you do, so that hasn't changed. You still need to analize your cylinder prior to diving and should mark the cylinder apppropriately.

 

[Bubble Junky]

With no PADI dive requirement now, there's obviously no analysis or planning requirement for that first Nitrox dive you'll eventually be taking.

If there is no dive as part of the class, then you just analize the cylinders and you're done.

Not with PADI - you analyse the two tanks then you have to plan two dives, including MOD and O2 exposure calculations.

 

[Marek K]

Originally Posted by Marek K
With no PADI dive requirement now, there's obviously no analysis or planning requirement for that first Nitrox dive you'll eventually be taking.

If there is no dive as part of the class, then you just analize the cylinders and you're done.

There is an analysis requirement for every EAN dive you do, so that hasn't changed. You still need to analize your cylinder prior to diving and should mark the cylinder apppropriately.

Sorry, that sentence was very badly written by me. I meant there are no such requirements regarding the first Nitrox dive to pass the class. I was just wondering what the point was of requiring two dives, when the instructor wasn't there to even check the analysis.

You're absolutely correct, of course, that there is a requirement for you to analyze and mark every Nitrox tank you dive. Plus a shop log entry.

 

[Marek K]

Not with PADI - you analyse the two tanks then you have to plan two dives, including MOD and O2 exposure calculations.

Hmmm... my wife and I just did a PADI Nitrox course, without dives. We analyzed tanks in the shop; and filled out the tank stickers that would have been used, as well as the shop log... both of which required a MOD determination.

But I don't remember doing hands-on O2 exposure calculations. How do you do that without actually diving, unless you crank in a hypothetical bottom time? We did O2 calculations as part of the course material and test, of course...

 

[wedivebc]

They said they would have our tanks ready but there will be no instructor there to check our dive plan, calcs, or anything. I'll guess we'll see when we get there.

Thanks for the replies!

You did not mention if this was a level 1 (LSU) or a level 2 (CSU) class.

 

[Damselfish]

Lot's of basic Nitrox classes don't even require dives anymore, which I think is fine. When we did the PADI class the dives were still required, but we did them on our own, which was also fine. The instructor was there while we analyzed tanks and stuff.

 

[Bubble Junky]

But I don't remember doing hands-on O2 exposure calculations. How do you do that without actually diving, unless you crank in a hypothetical bottom time? We did O2 calculations as part of the course material and test, of course...

You find your PPO2 for the depth you've planned, then using the oxygen exposure table, find the PPO2 on the top, then come down to find the bottom time you've planned, and you get the O2 exposure as a percentage. You're showing you can safely plan two dives, you don't actually have to do these dives anymore.

 

[Marek K]

You find your PPO2 for the depth you've planned, then using the oxygen exposure table, find the PPO2 on the top, then come down to find the bottom time you've planned, and you get the O2 exposure as a percentage. You're showing you can safely plan two dives, you don't actually have to do these dives anymore.

No, we didn't do that as part of the hands-on gas analysis. That was included thoroughly, though, on the Knowledge Reviews and on the final exam -- multiple dives, with varying 02 percentages.

--Marek

 

[Bubble Junky]

.........As a
result, effective immediately, the PADI Enriched Air
Diver course no longer requires dives, though they
are still recommended. Instead, a predive simulation
is required.The critical objectives of the Enriched Air Diver
course are both learned and applied out of the
water, and center around the physical procedures of
gas analysis (and related use of logs and contents
stickers). The performance requirements for the dive
can effectively be addressed in a predive simulation,
which can be presented in conjunction with practical
application 1 and 2. The performance requirements
for this simulation are listed below:
By the end of the Predive Simulation, with little or
no assistance from the instructor, the student will be
able to:
1. Demonstrate predive equipment setup, blend
analysis label confirmation for two enriched air
dives with two different scuba cylinders filled with
enriched air.
2. Plan two enriched air dives including maximum
depths, oxygen limits and no stop limits using the
RDP, the DSAT Equivalent Air Depth and Oxygen
Exposure Tables and the Enriched Air RDPs,
based on: depths, times, gas supply and surface
intervals provided by the instructor and the
analyzed content of the two scuba cylinders filled
with enriched air.

This is what should be done during the course.