Rebreather World - View Single Post - Diluent selection and the great alpinist v siege debate

bletso · 31st December 2006, 17:47

Quote: (Originally Posted by menofall)

hey Dale, am interested in your toxing at 2. for less than ten mins, I also like dave hit the bottom semi-hot sometimes 1.6-1.8 shut off the valve at my hydrogom, metabolize it down (few mins) turn back on the constant flow and continue diving, in your situation, were you stuck at 2. for however long, could you give more details, and what you did to fix the problem, very interested, because you dive a kiss style like myself. thanx.

It was on OC a few years back, diving what I thought was ean36 at 110ffw (33MFW) in pea soup.. However there was a long, hot suface swim to the drop point, then a plunge into 7C water with my normal fast drop. A couple of minutes later.... So, I just came up to a shollower depth and slowed down until everything cooled down and the offgas effect was clear.

Later on the surface, I analyzed my mix. It was closer to 50. (This was before I got into rebreathers) I can guarantee you, I check my mixes all the time since. A lot of things were wrong that day. That kind of mix should never been in that bottle, probably an error mixing. But, all's well that ends well. I learned a very good lesson.

I have never had that kind of problem on MCCR. I did have some issues awhile back when I noticed my PO2 climbing up substantially due to IP creep. At that time I just turned off the O2 until it dropped. I did not abort the dive, just had to monitor things more often. It did take sometime to figure out the exact cause. (I ran with an IP gauge untill the culprit showed itself again. It was intermitent.)

Dale

31st December 2006, 17:47	#38 (permalink)
bletso An independent diver. Current Rebreather/s: Dolphin Home Build Other Rebreather/s: Dolphin Home Build Join Date: May 2006 Location: Louisville, KY, USA Posts: 263	Re: Diluent selection and the great alpinist v siege debate Quote: (Originally Posted by menofall) hey Dale, am interested in your toxing at 2. for less than ten mins, I also like dave hit the bottom semi-hot sometimes 1.6-1.8 shut off the valve at my hydrogom, metabolize it down (few mins) turn back on the constant flow and continue diving, in your situation, were you stuck at 2. for however long, could you give more details, and what you did to fix the problem, very interested, because you dive a kiss style like myself. thanx. It was on OC a few years back, diving what I thought was ean36 at 110ffw (33MFW) in pea soup.. However there was a long, hot suface swim to the drop point, then a plunge into 7C water with my normal fast drop. A couple of minutes later.... So, I just came up to a shollower depth and slowed down until everything cooled down and the offgas effect was clear. Later on the surface, I analyzed my mix. It was closer to 50. (This was before I got into rebreathers) I can guarantee you, I check my mixes all the time since. A lot of things were wrong that day. That kind of mix should never been in that bottle, probably an error mixing. But, all's well that ends well. I learned a very good lesson. I have never had that kind of problem on MCCR. I did have some issues awhile back when I noticed my PO2 climbing up substantially due to IP creep. At that time I just turned off the O2 until it dropped. I did not abort the dive, just had to monitor things more often. It did take sometime to figure out the exact cause. (I ran with an IP gauge untill the culprit showed itself again. It was intermitent.) Dale Last edited by bletso : 31st December 2006 at 21:46.
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