Why is there so much talk about oxygen when talking about nitrox?
Use of nitrox generally involves being exposed to higher than normal partial pressures of oxygen (when compared to diving on air). On air there is virtually no danger of oxygen toxicity on normal sport dives. See questions [9 – 11]. On air, CNS/acute toxicity doesn’t come into play until you get below 200 fsw/60 msw and it is highly likely that nitrogen narcosis, decompression obligation and air supply will be far more limiting factors. It is also likely that air supply limitations will make pulmonary toxicity highly unlikely – do you carry enough air to remain for more than 45 minutes at 70 msw (230 fsw) and whatever decompression that you will be compelled to do? Standard sport diving tables don’t even go that far. My Buhlmann air tables only go to 21 minutes at 60msw (200 fsw). The DCIEM tables go to 40 min. at 72msw (236 fsw) and the decompression penalty for that is 286 min. on air (almost 5 hours) or 129 min. (over 2 hours) if the last stop is done on pure O2. By my reckoning you
Related Questions
- Why is the medias focus on television shows and talk shows? Why isn anyone talking about how the strike will influence motion pictures?
- Oddly enough, we were also recently talking about Shamans in Transformice... no real connection there, but whats with all this Shaman talk?
- When people talk about Enterprise 2.0, are they all talking about the same thing?
