Why do you have to attend Nitrox classes in order to use Nitrox?

[superkingkong]

hi guys,

hmm... just wondering, why do you have to attend the class to get a cert in order to dive nitrox?

the class... is it just a knowledge of calculations? awareness?
can't you just get a text book on nitrox and understand it?

coz i think, physically, in actual fact, you just go to the shop, and they will give you a nitrox mix tank and tell you the value, and you grab it and go down to the water. staying in water within the depth/time based on that value, no?

or before "ordering" from the shop, do you need to do the calculation and tell the shop, what % do you need? i think this will take time if they are gonna blend it for you?

i have not tried, and no knowledge on this, have not seen one in actual world.

please enlighten, thanks.

 

[divebutt]

During the class, you learn calculations, some new table work, the theory behind nitrox and safety when using it.

The second part of the class is where you learn hands on how to analyze a tank and record it's contents in a fill log. Every tank of nitrox you use MUST be analyzed by YOU prior to using it. How do you know the guy blending didn't screw up and gave you an 80% instead of a 32%? That would really ruin my day!

All in all, a very worthwhile course.

As far as what you do at a shop, bring in your tanks, take the max depth for your planned dive(s) and find a nitrox mix with a MOD deeper than your max, tell them to mix that mix (expect an accuracy of +/- 1%), pick up your tank, analyze it, record it and away you go!

 

[Divin'Papaw]

Nitrox is dived the same as air. Simply breath in, breath out.

However, there are limitations caused by the higher percentage of O2 and the increased chance for oxygen toxicity. It is extremely important that anyone breathing a mix richer in O2 that air learn about such risks, the limits we follow in order to minimize the risk and how to calculate your maximum operating depth (MOD) for the given mix and how to calculate your oxygen exposure over multiple dives. All of this is covered in the course. The reason all of the agencies have done away with the required dives is that actually diving it is idential to air.

There are also important equipment considers if you are having your own tanks filled with nitrox.

By showing your nitrox card, the shop knows you have been advised of the risks and taught how to minimize them. They can be fairly sure that you won't do something stupid like take an EAN36 tank down to 130 feet. I'm sure it's also important for them from a legal/insurance perspective as it alleviates the liability and places it on your shoulders as a trained user of nitrox.

 

[TheHobster]

hi guys,

hmm... just wondering, why do you have to attend the class to get a cert in order to dive nitrox?

the class... is it just a knowledge of calculations? awareness?

coz i think, in actual fact, you just go to the shop, and they will give you a nitrox mix tank, and you grab it and go down to the water. no?

or before "ordering" from the shop, do you need to do the calculation and tell the shop, what % do you need?

i have not tried, and no knowledge on this.

please enlighten, thanks.

is this another troll and the wrath of kong?

 

[HowardE]

Here we go again.

 

[Buoyant1]

True..but who's going to make sure you understand it enough not to kill your monkey @$$?

 

[Dive1Dennis]

is this another troll and the wrath of kong?

Probably

 

[PePaw]

Kong...get a life !
We have so many nice folks here that they will try to answer any question no matter how ridiculous.

 

[Thalassamania]

Nitrox is dived the same as air. Simply breath in, breath out.

However, there are limitations caused by the higher percentage of O2 and the increased chance for oxygen toxicity. It is extremely important that anyone breathing a mix richer in O2 that air learn about such risks, the limits we follow in order to minimize the risk and how to calculate your maximum operating depth (MOD) for the given mix and how to calculate your oxygen exposure over multiple dives. All of this is covered in the course. The reason all of the agencies have done away with the required dives is that actually diving it is idential to air.

There are also important equipment considers if you are having your own tanks filled with nitrox.

By showing your nitrox card, the shop knows you have been advised of the risks and taught how to minimize them. They can be fairly sure that you won't do something stupid like take an EAN36 tank down to 130 feet. I'm sure it's also important for them from a legal/insurance perspective as it alleviates the liability and places it on your shoulders as a trained user of nitrox.

The risks with NITROX are exactly the same as with air, just shallower. You should have learned that in your entry-level course, but alas, given the current condition of entry-level diver training, that was likely put off until your Advanced class since your entry-level restriction is 60 feet, so you don't need to know that yet.

You need to take a NITROX class because the powers that be in the dive industry, at the time, first thought NITROX was bad. The real problem was that the extra bottom time upset the lunch schedule at most dive resorts. This lunch schedule was such a problem that the Cayman Watersportsmans' Association even banned it from the island for a time using the outright lie that that the Cayman chamber did not know how to treat a NITROX bends case.

The hucksters of diving did not come around to see NITROX advantages until they found a way that they could make an extra buck on it. So instead of adding one page to your textbook and ten minutes to your lectures they came up with a new card (sound of cash registers ringing throughout the land).

 

[sweatfrog]

The risks with NITROX are exactly the same as with air, just shallower. You should have learned that in your entry-level course, but alas, given the current condition of entry-level diver training, that was likely put off until your Advanced class since your entry-level restriction is 60 feet, so you don't need to know that yet.

You need to take a NITROX class because the powers that be in the dive industry, at the time, first thought NITROX was bad. The real problem was that the extra bottom time upset the lunch schedule at most dive resorts. This lunch schedule was such a problem that the Cayman Watersportsmans' Association even banned it from the island for a time using the outright lie that that the Cayman chamber did not know how to treat a NITROX bends case.

The hucksters of diving did not come around to see NITROX advantages until they found a way that they could make an extra buck on it. So instead of adding one page to your textbook and ten minutes to your lectures they came up with a new card (sound of cash registers ringing throughout the land).

:toilet