I was parusing some information about oxygen toxicity the other day and came upon this graph:
3-6 hours at 2.0
I have been using tables that set limits based on 1.4 and even my dive computer only allows conservency settings to go as high as 1.6. However for average days of diving at deeper depths i rarely exceed 3 hours in a day, and that is with surface intervals that would allow for "healing" from free radical O molicule damage. So is the data on the graph bogus? Is there another reason for ppO2 levels to be kept around 1.4? or are we diving rediculously conservatively?
Are there any divers who dive greater ppO2 than 1.6? It seems that with 36% nitrox, I shouldnt have any problems going to recreational depth limits of 132ft (1.8 ppO2) for an hour.. (i realize that would most likely be past NDL, but you get the idea)?
3-6 hours at 2.0
I have been using tables that set limits based on 1.4 and even my dive computer only allows conservency settings to go as high as 1.6. However for average days of diving at deeper depths i rarely exceed 3 hours in a day, and that is with surface intervals that would allow for "healing" from free radical O molicule damage. So is the data on the graph bogus? Is there another reason for ppO2 levels to be kept around 1.4? or are we diving rediculously conservatively?
Are there any divers who dive greater ppO2 than 1.6? It seems that with 36% nitrox, I shouldnt have any problems going to recreational depth limits of 132ft (1.8 ppO2) for an hour.. (i realize that would most likely be past NDL, but you get the idea)?