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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
134
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 as-
cent.
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.
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