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viscya · 29th September 2006, 14:32

Quote: (Originally Posted by Mark Chase)

Yes but working on a avg of 1.3pp02 for the dive over 150 -180mins even on 150 he will hit 300mins when the recomended max exposure limit for a 24 hour period is 210. So he is getting on for 27% over. For 2X3 hour run he is looking at 360mins.

Or are we saying that the NOAA Daily Oxygen Presure time Exposure limits are rubbish?

ATB

MArk Chase

Mark

I'm not sure where your runtime numbers are coming from, but V-planner is giving me less than 100-120 minute runtimes depending when you bump up the PPO2. Personally I'd stick with PPO2 of 1.1 the whole dive and take 118 minutes to surface. This is 50% CNS per dive, and the daily limit is below the 270 in the NOAA spec.

Phi,

I've had enough flooding in the loop to make the WOB intolerable. I'll carry bailout!

29th September 2006, 14:32	#20 (permalink)
viscya Wrecking Crew Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Oct 2005 Location: Marlton New Jersey Posts: 138	Re: Bailout Gases for long 60 metre dives Quote: (Originally Posted by Mark Chase) Yes but working on a avg of 1.3pp02 for the dive over 150 -180mins even on 150 he will hit 300mins when the recomended max exposure limit for a 24 hour period is 210. So he is getting on for 27% over. For 2X3 hour run he is looking at 360mins. Or are we saying that the NOAA Daily Oxygen Presure time Exposure limits are rubbish? ATB MArk Chase Mark I'm not sure where your runtime numbers are coming from, but V-planner is giving me less than 100-120 minute runtimes depending when you bump up the PPO2. Personally I'd stick with PPO2 of 1.1 the whole dive and take 118 minutes to surface. This is 50% CNS per dive, and the daily limit is below the 270 in the NOAA spec. Phi, I've had enough flooding in the loop to make the WOB intolerable. I'll carry bailout! __________________ "There is nothing majestic or dignified about being left to silently rot and collapse under heaps of old fishing net forgotten and unappreciated in dark and unvisited waters." DrMike
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