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Split from Exploration dives without a computer

Discussion in 'Hogarthian Diving' started by TheRedHead, May 6, 2006.

  1. TheRedHead

    TheRedHead Orca Rest in Peace

    # of Dives: 200 - 499
    Location: Dixie
    6,948
    3
    0
    Why the 1.2 on bottom mix? If I recall correctly, no one has ever toxed on either 1.4 or 1.6 (and I think the source is NOAA). 1.6 severely limits your time, of course.
     
  2. PerroneFord

    PerroneFord DIR Practitioner

    # of Dives:
    Location: The Borg Cube
    6,018
    33
    0
    In our class, I think the NOAA, IANTD, and TDI, all gave either 1.3 or 1.4 as max for working portion of the dive and 1.6 as max for deco stops.
     
  3. TheRedHead

    TheRedHead Orca Rest in Peace

    # of Dives: 200 - 499
    Location: Dixie
    6,948
    3
    0
    Isn't that something most shops do with your regular regulator service? Mine does.
     
  4. PerroneFord

    PerroneFord DIR Practitioner

    # of Dives:
    Location: The Borg Cube
    6,018
    33
    0
    Could you explain this a bit more? I don't understand.
     
  5. JeffG

    JeffG Solo Diver

    # of Dives: 500 - 999
    Location: Edmonton, Alberta
    10,016
    87
    48
    To keep the oxygen exposure down to a min for one. The other things is that O2 and N2 are the killers in the dive world...Helium is your friend. No need to spike the O2, use helium to lower the N2.
     
  6. TheRedHead

    TheRedHead Orca Rest in Peace

    # of Dives: 200 - 499
    Location: Dixie
    6,948
    3
    0
    You took an IANTD class too? All the questions on the TDI test used 1.6 for the dive. I don't dive at 1.6 because BT is 45 minutes at that PO2.
     
  7. TheRedHead

    TheRedHead Orca Rest in Peace

    # of Dives: 200 - 499
    Location: Dixie
    6,948
    3
    0
    Off the top of my head, NOAA recommends no more than 45 minutes of exposure at 1.6 PO2.
     
  8. TheRedHead

    TheRedHead Orca Rest in Peace

    # of Dives: 200 - 499
    Location: Dixie
    6,948
    3
    0
    But, Jeff, Helium requires a lot of additional training from any agency. A GUE rec diver is pretty limited to dives above 100 feet. It would be such a PITA, too, particularly traveling.
     
  9. PerroneFord

    PerroneFord DIR Practitioner

    # of Dives:
    Location: The Borg Cube
    6,018
    33
    0
    Ahhh right. I remember that they had recommendations for max time on a specific pp. Thanks for jogging my memory!
     
  10. PerroneFord

    PerroneFord DIR Practitioner

    # of Dives:
    Location: The Borg Cube
    6,018
    33
    0
    I "officially" took an IANTD class, but the class materials were pretty weak. So my instructor taught out of the IANTD stuff, the TDI stuff, and the NOAA manual. He covered a LOT of ground.
     

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