WKPP - Approved Gases

WKPP - Approved Gases
by Casey McKinlay and George Irvine



These gases are for use in the WKPP and are not to be confused with anything else outside of the WKPP.
They reflect MINIMUM helium requirements and MAXIMUM oxygen requirements.
See the other sections of this web site for more explanation and detail.

Bottom Gas
Depth Range
Max O2%
Min He%
0-190 ft.***
18
45
190 ft. +
12
70

Drysuit Inflation Gas - 100% Argon

*** 190 gas gets dropped when 190 is reached.
There are no 190 profiles in the WKP - all caves are deeper or shallower than that.
For caves where the depth is expected to stay beyond 150 feet other than in a slope to depth,
the helium in the 190 gas needs to be pushed up accordingly.


Gas choices for profiles beyond the expected must be approved
by both the Project Engineer and the Project Director

Support Diver Gas
Depth Range
Max O2%
Min He%
0-150 ft.
21
35
0-190 ft.
18
45
200 ft. +
12
70


Deco Gas
Depth Range
Max O2%
Min He%
200 - 240 ft. *
16
45
130 - 190 ft.
21
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
 

* 200 - 240 ft. deco gas is used only for maximum deco, using rebreather.

Back Gas Breaks
Max O2%
Min He%
16
45
100% O2 Break - 12 Minutes On / 6 Minutes Off
Break @ Deco Stop prior to Gas Switch (130ft, 80ft, 30ft)
Extended Bottom Times - Break @ 50ft for 20 minutes

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