http://www.direxplorers.com/ For discussion of all aspects of decompression including theory, practise and DCS incidents. en Mon, 06 Sep 2010 20:59:27 GMT vBulletin 60 http://www.direxplorers.com/images/element/misc/rss.jpg http://www.direxplorers.com/ http://www.direxplorers.com/dir-decompression-forum/10326-deco-gas-o2-cleaning-regs.html Mon, 06 Sep 2010 10:59:43 GMT Hi all,
Just a question.
I know that the use of 80% as a deco gas is not recomended by DIR standards, BUT I´ve got doubts with "when the deco regulator (1st, 2nd stage and SPG) has to be O2 cleaned.
I will use 50% as deco gas in one trip and 80% as deco gas in another trip right after the firts one and I intended to use the same deco reg.
Question is: Should the deco reg be O2 cleaned? if I use it for 50% then will still be O2 cleaned? if I use it for 80% then will still be O2 cleaned?
Thanks for the replies
A lot to learn!!
Cheers ]]> DIR Decompression Forum mikelorue http://www.direxplorers.com/dir-decompression-forum/10326-deco-gas-o2-cleaning-regs.html http://www.direxplorers.com/dir-decompression-forum/10225-comparison-different-deco-algorithms-21-30m-zone-nitrox-32-a.html Mon, 23 Aug 2010 21:13:26 GMT I was curious about the implementation and usage of different deco algorithms in the 21-30m zone and therefore have written a small document to compare different deco algorithms used in this zone.

It can be found here: http://www.wdsr.nl/comparedecomechanism.pdf

If interested read it and make up your mind about the usage of tables, computers and ratio's in the 21-32 meter zone using Nitrox 32%.

Greetings,
Barend ]]> DIR Decompression Forum barend http://www.direxplorers.com/dir-decompression-forum/10225-comparison-different-deco-algorithms-21-30m-zone-nitrox-32-a.html http://www.direxplorers.com/dir-decompression-forum/10189-preparing-switch-gases.html Tue, 17 Aug 2010 14:28:50 GMT I have been shown two methods of switching gas (I hasten to add, neither on a GUE course - that should come in 2011!)... *Method 1:* Get to the switch depth Stabilise Prepare to switch (check bottle markings, get reg out, check correct reg etc) Check depth Get buddy confirmation Switch *Method 2:* At stop prior to the switch or on the way up to switch depth: Prepare to switch (check bottle markings, get reg out, check correct reg etc) Get to the switch depth Stabilise Check depth Get buddy confirmation Switch So - method 1 is all done at the switch depth, method 2 gets you onto the next gas sooner. Is method 2 hugely wrong as one of my friends suggests? I have been shown two methods of switching gas (I hasten to add, neither on a GUE course - that should come in 2011!)...

Method 1:
Get to the switch depth
Stabilise
Prepare to switch (check bottle markings, get reg out, check correct reg etc)
Check depth
Get buddy confirmation
Switch

Method 2:
At stop prior to the switch or on the way up to switch depth:
Prepare to switch (check bottle markings, get reg out, check correct reg etc)
Get to the switch depth
Stabilise
Check depth
Get buddy confirmation
Switch

So - method 1 is all done at the switch depth, method 2 gets you onto the next gas sooner.

Is method 2 hugely wrong as one of my friends suggests? ]]> DIR Decompression Forum Tilesey http://www.direxplorers.com/dir-decompression-forum/10189-preparing-switch-gases.html