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Thread: New GUE standard gas mixes?

 


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    O-ring's Avatar
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    New GUE standard gas mixes?

    I don't know who else caught George's email over on quest, but he said that GUE will change its standard gases to match the WKPP standard gases (http://www.wkpp.org/gases.htm) on the next printing of the GUE materials.

    Finally we have something good to talk about...

    Code:
    Backgas would be:
    Depth Range                Max O2%               Min He% 
    0-190 ft.                    18                    35 
    200 ft.+                     12                    70 
    
                Drysuit Inflation Gas - 100% Argon
    Code:
    Deco gases would be:
    Depth Range             Max O2%                Min He% 
    200 - 240 ft.*            16                     45 
    130 - 190 ft.             18                     35 
    80 - 120 ft.              35                     25 
    30 - 70 ft.               50                     --   
                        Oxygen @ 30ft
      ONLY when Dry, Out of the Water, and in Habitat 
    0 - 20 ft.              100% O2
    Last edited by O-ring; April 9th, 2003 at 09:48 PM.
    "I'm Warren Miller and about 50 years ago, back in 1946 when I was a senior in college, I went skiing on the second weekend in November. On Monday morning, I went back and dropped out of school. Since then, I've never looked back." - Warren Miller



    Atlantic Underwater

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    Here were the old GUE standard mixes for reference..

    Bottom Mix
    10'-100' = EAN32 or 30/30
    110'-150' = 21/35
    160'-200' = 18/45
    210'-250' = 15/55
    260'-400' = 10/70

    Deco Gas
    20' = 100% o2
    70' = EAN50
    120' = 35/25
    190' = 21/35

    Backgas breaks are still recommended at 12 on - 6 off
    "I'm Warren Miller and about 50 years ago, back in 1946 when I was a senior in college, I went skiing on the second weekend in November. On Monday morning, I went back and dropped out of school. Since then, I've never looked back." - Warren Miller



    Atlantic Underwater

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    First few questions to get discussion rolling...

    1. What does this mean for triox? Is triox just going to standardize on 18/35?

    2. The WKPP gases state max o2 and min He. How much variation are we going to see in gases being used? Will people increase helium quite a bit above the min or stick to what the min value is?
    "I'm Warren Miller and about 50 years ago, back in 1946 when I was a senior in college, I went skiing on the second weekend in November. On Monday morning, I went back and dropped out of school. Since then, I've never looked back." - Warren Miller



    Atlantic Underwater

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    Is this likely to affect the max depth permitted for Tech 1 students? Current is 150', which corresponds to the MOD for 21/35. Should Tech 1 now go to 190' on standardized 18/35?
    (Si) vis pacem, para bellum.

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    What About The RecTriox Class?

    I thought the standard mix for the RecTriox class was 30/30. I'm wondering if it will change what type of mix we will be using for the class?

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    Really?

    That's a lot of deco for 20 mins @ 100!
    -Jeff

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    [QUOTE][i]metridium once bubbled... [/i][B]...

    metridium once bubbled...
    Is this likely to affect the max depth permitted for Tech 1 students? Current is 150', which corresponds to the MOD for 21/35. Should Tech 1 now go to 190' on standardized 18/35?
    I could see where it would still be prudent/valid for the student to gain experience in the 150' range rather than to 190' where mistakes/inefficiencies may be amplified due to increased gas consumption and deco obligations at depth.

    Not a major change in ATA's, but given how problems can snowball, a small measure of conservatism may be better.

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    [QUOTE][i]O-ring once bubbled... [/i][B]1. ...

    O-ring once bubbled...
    1. What does this mean for triox? Is triox just going to standardize on 18/35?

    2. The WKPP gases state max o2 and min He. How much variation are we going to see in gases being used? Will people increase helium quite a bit above the min or stick to what the min value is?
    The Triox class was billed as a no staged deco class in the 0-120 (130?) recreational range in which the PPO2 was increased to give extened bottom times while the HE eliminated the narcosis. No deco gas (other than backgas) was utilized and no planned deco stops other than what is required for any dive, what some would call safety stops.

    I would expect that this will not change.

    Dave D
    You just can't show up for "game day" and expect to win. You've got to go to practice if you want to be ready!

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    I think this will effect the Tech 1 and 2 cla...

    I think this will effect the Tech 1 and 2 classes. I don't think people would take a tech 1 class, that is good to 150 when the Triox class is good to 130.

    Eric

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    As a prospective Tech 1 student, I can only say that I'd be much more inclined to take the class if it were 190' MOD, if that can be done safely. No surprise there, right?

    150' doesn't seem like much for all the training and expense, at least at first glance, and especially if I have cave training first.

    But I'm not a technical diver yet, so what do I know?
    (Si) vis pacem, para bellum.

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