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Multi level dive
Nitrox
NOAA
No decompression time
No decompression dive
NO DEC TIME
OEA = EAN = EANx
OLF
OTU
Oxygen tolerance unit
Oxygen limit fraction
O
%
2
Oxygen partial pressure
PO
2
RGBM
Reduced Gradient Bubble Model
Repetitive dive
Residual nitrogen
SURF TIME
Surface interval time
Tissue group
Whole-body toxicity
A single or repetitive dive that includes time spent at various depths and whose
no decompression limits are therefore not determined solely by the maximum
depth attained.
In sports diving, refers to any mix with a higher fraction of oxygen than standard
air.
United States National Oceanic and Atmospheric Administration.
The maximum amount of time a diver may remain at a particular depth without
having to make decompression stops during the subsequent ascent.
Any dive which permits a direct, uninterrupted ascent to the surface at any
time.
Abbreviation for no decompression time limit.
Abbreviations for oxygen enriched air nitrox.
Abbreviation for oxygen limit fraction.
Abbreviation for oxygen tolerance unit.
Used to measure the whole-body-toxicity.
A term used by Suunto for the values displayed in the oxygen toxicity bar graph.
The value is either the CNS% or the OTU%.
Oxygen percentage or oxygen fraction in the breathing gas. Standard air has
21% oxygen.
Limits the maximum depth to which the nitrox mixture can be safely used. The
maximum partial pressure limit for enriched air diving is 1.4 bar. The contingency
partial pressure limit is 1.6 bar. Dives beyond this limit risk immediate oxygen
toxicity.
Abbreviation for oxygen partial pressure.
Abbreviation for Reduced Gradient Bubble Model.
Modern algorithm for tracking both dissolved and free gas in divers.
Any dive whose decompression time limits are affected by residual nitrogen
absorbed during previous dives.
The amount of excess nitrogen remaining in a diver after one or more dives.
Abbreviation for surface interval time.
Elapsed time between surfacing from a dive and beginning a descent for the
subsequent repetitive dive.
Theoretical concept used to model bodily tissues for the construction of
decompression tables or calculations.
Another form of oxygen toxicity, which is caused by prolonged exposure to
high oxygen partial pressures. The most common symptoms are irritation in
the lungs, a burning sensation in the chest, coughing and reduction of the vital
capacity. Also called Pulmonary Oxygen Toxicity. See also OTU.
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