RDRINK25
Contributor
Looking to get away for a short weekend. 2 days of diving keeping it under 80' and diving EAN and after 19 hrs of a surface interval. What is the census? I know the min is 18hrs...
diving and flying
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I always refer to DAN for these questions and their recommendation is 18 hours.
http://www.diversalertnetwork.org/medical/faq/Flying_After_Diving
As with everything, this is not exact science. Everyone's body is different. Even when diving within limits (of tables and computer), you can get DCS.... So many factors, physique, dehydration, alcohol consumption, presence of PFO,.... No one can give you 100% garantuees..... Follow recommendations and apply personal risk management.
http://www.diversalertnetwork.org/medical/faq/Flying_After_Diving
As with everything, this is not exact science. Everyone's body is different. Even when diving within limits (of tables and computer), you can get DCS.... So many factors, physique, dehydration, alcohol consumption, presence of PFO,.... No one can give you 100% garantuees..... Follow recommendations and apply personal risk management.
Mr Carcharodon
Contributor
The nitrox in general improves your odds, unless of course if you dive right up to NDL. That's the case since what you will have done is shift the limiting compartment to a longer time constant. In any case for what you describe you will be within the conservative DAN limits. Don't push the envelop and the odds are on your side. Do back off if you have other risk factors like cold, environmental stress, current, poor physical condition etc. If that is the case you are diving outside of the the guidelines.
K
KeithG
Guest
Depends upon your definition of 2 days of diving. For some people that is 2 45 minute dives no where near NDL limits. For others that is 10 60 minute dives pushing NDLs on every dive. (Use of EAN is meaningless, NDL is NDL regardless of your gas)
First case, no sweat.
Second case, not so much.
Basking Ridge Diver
Contributor
Thanks for the link - I was taught 24 hours way back when. I still use 24 hours to be safe - I feel better knowing I should be clear for almost anything but that link was of interest.
OP
RDRINK25
Contributor
If you do 2 dives to 60' ea and 30 min ea using a 30 min SI and ean32. Can you fly in 12 hrs? If I dove 1 dive to 60' for 60 min I could acording to DAN. So using the dives I listed would it be ok?
Well, two 30-minute dives does not a 60-minute dive make (the extra ascent and descent, etc.), but ...
You might want to track your dives using NOAA’s air table: http://www.ndc.noaa.gov/pdfs/NoDecoAirTable.pdf and EANx32 table: http://www.ndc.noaa.gov/pdfs/nitrox32.pdf
--< NOTE: the pressure group letters are not the same as PADI’s. >--
And then apply the recommendations from their Ascent to Altitude table: http://www.ndc.noaa.gov/pdfs/AscentToAltitudeTable.pdf
You might want to track your dives using NOAA’s air table: http://www.ndc.noaa.gov/pdfs/NoDecoAirTable.pdf and EANx32 table: http://www.ndc.noaa.gov/pdfs/nitrox32.pdf
--< NOTE: the pressure group letters are not the same as PADI’s. >--
And then apply the recommendations from their Ascent to Altitude table: http://www.ndc.noaa.gov/pdfs/AscentToAltitudeTable.pdf
K
KeithG
Guest
Are you asking us to provide Our interpretation of DAN guidelines? Alert Diver | Flying After Diving which says NO since multiple dives are involved.
Or are you asking us whether your residual nitrogen loading would be the same from this set of 2 dives?
OP
RDRINK25
Contributor
Knotical is very wisely answering your question without coming right out and saying it. Do the calculations that he has laid out for you and you will get enough information to make an informed decision. It is, however, your decision and yours alone. That is why Sam (knotical) gave you the tools to make that decision without making it for you.
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