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DSAT/PADI TecRec - Rebreather Instructor
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The PADI Rebreather Instructor course
will train and prepare Enriched Air (Nitrox) Instructors,
who are also qualified as Rebreather Divers, to teach the
recreational use of the semi-closed circuit Dolphin Atlantis
I rebreather system.
This course is run over 2 days and includes classroom presentations and
4 rebreather open water dives.
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Course Objective
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Academic Topics & Skills
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Hours
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Standards & Procedures
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1.00
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History of Rebreathers
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0.30
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Mechanics of Rebreathers
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1.00
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Gas Consumption
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1.30
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Problem Solving
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0.30
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Dive Computers
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0.30
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Presentations
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2.00
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Equipment Preparation
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4.00
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4 Open Water Dives
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4.00
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System Maintenance
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3.00
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Entry Requirements:
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Certified Enriched Air (Nitrox) Instructor
Certified Semi-closed Circuit Dolphin
Atlantis
Rebreather Diver
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Minimum Age:
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18 years for Career Candidates
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Certification:
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PADI Instructor Application Fee – Euro 100 |
Numbers of Dives:
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boat / beach dives: 4 |
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The Atlantis/Dolphin is a very simple piece of equipment.
It has been designed to use Nitrox mixtures in a pre mixed cylinder
to maximize the duration of recreational dives. It is not intended,
nor designed to handle decompression dives, and we personally
recommend a depth limit of 30 metres on the unit. The system
works on a constant flow rate which means that the pre mixed
Nitrox continually flows through a small jet into the breathing
loop. The diver simply decides the maximum dive depth, and then
selects the appropriate jet size to give enough gas to breathe
at the target depth. The diver then cross references a look up
chart to determine what the final 02% will be in the loop, and
then plans the dive.
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The deeper the dive, the bigger the jet will need to be to
give enough gas, so therefore the available duration will naturally
decrease with deeper dives. This is the reason why we recommend
a 30 metres maximum depth, as the unit doesn't give sufficient
dive duration below this depth. For shallow water diving it is
ideal. In 20 metres of water, the SCR should give you nearly
2 hours of in water time, more than enough, and also good value
from the inboard 5 litre Nitrox cylinder. For bailout you can
fit an external 2 or 3 litre pony cylinder which for no decompression
dives is ideal. There are no electronics to monitor, and the
diver simply concentrates on the dive, and monitors a standard
contents gauge as per normal OC diving. The scrubber canister
should give up to 3 hours duration, which is normally enough
for a weekends diving. The training course mainly concentrates
on swimming the unit on a variety of dives. Skills are very simple,
mainly revolving around OC bailout, mouthpiece recovery, cleaning
of the unit, and scrubber repacking.
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The Draeger Dolphin is a Semi-Closed Circuit
Nitrox (oxygen enriched air) Rebreather.
According to the dosage connected mixed gases can be used at oxygen volume
percentages:
60 % O2 / 40 % N2
50 % O2 / 50 % N2
40 % O2 / 60 % N2
32 % O2 / 68 % N2
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It is designed and manufactured for recreational
diving, and must not be used at depths greater than 130'. The
Dolphin has several distinct advantages over traditional open
circuit scuba equipment.It allows the diver to spend a greater
time underwater at a given depth due to its far more efficient
utilization of oxygen;the quantity of bubbles release from the
unit is vastly diminished as compared to open circuit units;
and the use of the nitrox mixtures approved with the Dolphin
can provide for extended bottom times at the appropriate depth
for each mixture in contrast to simple air. Nevertheless, because
the Dolphin is a Rebreather, which by definition recirculates
the diver's expired air to remove carbon dioxide and add Nitrox,
there are significant hazards with its use that must be thoroughly
understood and proper training is necessary before the unit be
used with an acceptable margin of safety.
Our ANDI/NRC program qualifies Nitrox divers to rent, purchase and dive
the Draeger Dolphin SCR
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