Nitrox Mix

[Da Wolf]

I am going diving this weekend. I currently have 2 120 tanks filled with 40% Nitrox, and am not anticipating going any deeper than 40 MAYBE 50 feet deep. Is there any concerns I need to be aware of while using this rich of mixture?

 

[Mike Boswell]

According to PADI Enriched Air Diver Manual P.86,

The Maximum Depth for EAN40 (calculated for 1.4 ata) is calculated as (46.2/0.40)-33 = 82.5 fsw.

 

[Kevin Carlisle]

If you have to ask then you should not dive it. Might not be what you want to hear but better than being dead.

 

[Da Wolf]

If you have to ask then you should not dive it. Might not be what you want to hear but better than being dead.

Thanks for being candid Kevin (seriously, thanks). But yeah it has been awhile since I have dove with Nitrox and am not as well versed with it as I should be there for I asked. I gotta re-read my nitrox book and tables again.

 

[Kevin Carlisle]

Thanks for being candid Kevin (seriously, thanks). But yeah it has been awhile since I have dove with Nitrox and am not as well versed with it as I should be there for I asked. I gotta re-read my nitrox book and tables again.

Your welcome. You need to, there is more to it than what someone else posted.

 

[DuboisP]

According to PADI Enriched Air Diver Manual P.86,

The Maximum Depth for EAN40 (calculated for 1.4 ata) is calculated as (46.2/0.40)-33 = 82.5 fsw.

in metric, no need to have a manual
((1.4 / 0.4) - 1 )*10 = 25 m

 

[Jonny boy]

CNS/OTU's - levels of 02 exposure would be the first things i would think about on these mixes.

 

[Kevin Carlisle]

CNS/OTU's - levels of 02 exposure would be the first things i would think about on these mixes.

And that could sneak up and bite you faster than you think.

 

[Lead_carrier]

I am going diving this weekend. I currently have 2 120 tanks filled with 40% Nitrox, and am not anticipating going any deeper than 40 MAYBE 50 feet deep. Is there any concerns I need to be aware of while using this rich of mixture?

Ok, not to be too much of a smart alec but having ANDI Nitrox, according to your card. I believe you are only certified for 32 and 36%, at least the last card I saw said that. Actually, you should be fine with 40% at 40 feet. The MOD formula is this. MOD = { (Max PPO2 * 33) / FO2 } - 33
Get on moose for not explaining it better.

 

[idocsteve]

If you have to ask then you should not dive it. Might not be what you want to hear but better than being dead.

He asked because he wanted to cover himself in every possible way.

He got some great answers, the mix is safe at the intended depth of the dive, I don't see why just having the need to ask the question prohibits him from using the gas.