| OVERVIEW
This is course is to provide the diver with the
information necessary to utilize EANx as a
breathing medium. The course may be taught as a
stand-alone specialty course to certified divers
or the knowledge and skills training may be
integrated into the NAUI Scuba Diver course.
QUALIFICATIONS OF GRADUATES
Upon successful completion of this course,
graduates are considered competent to utilize EANx
in open water diving activities without direct
supervision, provided the diving activities and
the areas dived approximate those of training.
COURSE POLICIES
Dives shall not exceed a depth of 130 fsw (40 msw)
or 1.6 atm PO2 , whichever is less. No planned
dives requiring actual decompression stops on the
appropriate EANx tables are to be permitted.
(Maximum PO2 of 1.4 is to be taught with 1.5-1.6
as contingencies.)
This course may be taught as a NAUI Recognition
Program if the open water training dives are not
included. Recognition may be upgraded to EANx
Diver certification upon completion (within six
months) of the required dives under supervision of
a NAUI EANx Instructor.
SKILL REQUIREMENTS
At least two dives are to made using EANx, one of
which is to be a repetitive dive. The student is
to analyze his or her own breathing mixture and to
plan and safely execute each dive.
ACADEMIC REQUIREMENTS
The following topics are to be covered: history of
nitrox as a breathing gas; Dalton’s law of partial
pressures; physiology of oxygen and nitrogen;
depth limits, advantages, disadvantages and risks
of nitrox; oxygen toxicity; hazards and
precautions of handling oxygen; the concept of
Equivalent Air Depth; use of EANx with Standard
Air Dive Tables; common gas mixing procedures; and
gas analyzing procedures.
PREREQUISITES FOR ENTERING THE COURSE
Age. Minimum is 15 years.
Certification: NAUI Scuba Diver certification or
the equivalent is required unless combined with
the Scuba Diver course. The instructor is to
ensure adequate student knowledge and capability
before any open water training and shall use skill
or other evaluations to do so.
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