jepuskar:Hi,
My buddy and I are thinking of using Nitrox for 7 straight days of atleast 4 dives a day. We both have Nitrox compatible computers, but have never dove over multiple days with Nitrox.
We are going to Bonaire, so we probably could get away with using 36% the whole trip, but would be pushing the 24 hour exposure limits..according to the tables anyway.
Any deep dives like the Hooker would probably be done on air or 32%.
Has anyone dove this much exclusively on Nitrox for multiple days and used a computer? If so, what % did you use and were you even close to reaching your exposure limits?
We have multiple options on how to use Nitrox, like using 36% for our last few shallower dives of the day..etc.
Any insight would be appreciated.
Thanks,
Jason
Yes, dove a week on Nekton Cruise in P.R. in March with 29-31% EAN with 4-6 dives a day/night on singles, with Aeris 2 'puter. Never came close to NDL or O2 limits. Ten divers with similar experience this trip; all different 'puters -- all safe.
Membrane oxygen enricher on board was somewhat erratic and a low volume producer so that only approx. 10 of 30 divers were able to dive EAN. Twice as many wanted EAN.
No science to report here except to mention the closed study by DAN. Perhaps time and a great number of divers will yield statistical power to prove greater safety, but until then standard practices seem safe.
Without EAN, longer SI's, shallower dives and/or fewer dives would have been more likely.
Norm