Should you be diving NITROX if you can not answer these questions?

[Scared Silly]

Some snippets from another thread - all posts were made by three different people all of which are NITROX certified. The third post is mine which is combination of two posts.


First Post - "I was diving ... at 1.6 ppo (130?)"

Second Post - " ... what where YOU doing at 130 ft on NITROX? What was your %? If you planned on going THAT deep, why use nitrox? What was the benefit of nitrox at that depth?

Third Post - "Do the math, the first post contains all of the information needed to figure out the mix. As for using NITROX at 130 feet there is nothing wrong with it and the benefits to diving NITROX at 130 feet are the same and more as diving it at 60 feet. If you do not know this or can not do the math you should not be diving NITROX"

Several people did not get my post - what I found odd was that these posts were part of a larger accident discussion on this board where many people were stressing personal responsibility in the context of a person who had some knowledge but perhaps not enough to not keep/get themselves out of trouble. Yet IMHO the second post shows someone who has had the training yet still fails to have the knowledge.

So if you are nitrox certified could you answer the questions to the second post without looking them up? Please do not post the answers as they are not german to the thread and might prevent someone from realizing they need a refresher course.

 

[rustyshakelford]

ill dive nitrox to 150' i cant even imagine what my ppo is at that depth!

brett

 

[redacted]

I think the disagreement may be in using PPO2 = 1.6. I still use 1.6 for MOD but exceed 1.4 rarely and with caution, keeping time short and workload low. When I do go deep on nitrox, the max depth times are fairly short and I spend most of the dive at PPO2 <1.2 so there is still plenty of bottom time and safety advantages to the nitrox.

 

[TheScubaBOB]

To be honest...

I'm newly certified for Nitrox (03/14/09), haven't dove on it yet and couldn't pull the answer out of thin air as I don't have the formulas memorized.

I can however get the answer using the tables I have and if I want it quicker I can pull-up iScuba Plan on my iPhone and plug in the numbers to get a "close enough" answer (as iScuba Plan does EAN in integers only).

I will say that when I do start using Nitrox I will definately know the depth limit of my Mix and have my computer set to warn me BEFORE I reach it.

 

[Pitchblack]

Is this guy you quote even certified for enriched air? Madness I say, madness.

I hope there arent too many dumb)"#¤&T's out there trying to dive nitrox and not beeing certified for it and have no clue of the hazards that nixtrox-diving can develop into.

Edited*



Best regards, Pitchblack.

 

[Scared Silly]

rusty - if your reply is genuine please reread your books.

Awap - I do not think there was any disagreement over the max PPO2.

kyphur - many formulas do not need to be memorized, just think about the units. But failing that looking up the formula is okay - you still need to be able to use it correctly. And as importantly be able to answer the other questions without looking them up. Which is really my point.

Pitchblack - As I wrote all three are nitrox certified (or at least two of them claim to be. I know I am).

 

[muddiver]

PADI Nitrox wiz-bang doesn't count.

 

[siikik]

Either they are lying about their certifications, or the shop/instructor needed an extra couple of bucks and that's why they were passed...




Ken

 

[Web Monkey]

ill dive nitrox to 150' i cant even imagine what my ppo is at that depth!

I'm hoping you're just trolling.

If you don't select an appropriate mix it could easily be your last dive.

Terry

 

[Blackwood]

ill dive nitrox to 150' i cant even imagine what my ppo is at that depth!

brett

I'm hoping you're just trolling.

If you don't select an appropriate mix it could easily be your last dive.

Terry

So will I... air enriched with helium.