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Training on the Frog Mark I is offered at three distinct levels: |
- Sport
- Technical
- Commercial
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Candidates must be certified as an Open Water Diver by a Training Agency that has
fulfilled the Minimum Course Content for Open water Diver Certification as outlined
by the Recreational Scuba Training Council (RSTC). A copy of a valid Certification
Card identifying the individual, the Agency, the level of training and the Instructor
must be presented. Candidates will also be asked to present their logbooks to verify
training records and activity levels.
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To undertake training on the Frog Mark I Rebreather, the candidate shall effectively
demonstrate basic watermanship ability that shall include a continuous 200 yard
(183 meter) surface distance swim and a 10 minute survival swim / float without
the use of mask, fins, snorkel or other swimming aids. |
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The candidate must complete a medical history / statement form required by MDEA
prior to in-water activities. It is required that candidates with out-of-the-ordinary
medical histories be approved, without conditions or restrictions, as medically
fit for diving by a licensed medical practitioner prior to engaging in water activities. |
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The candidate shall be informed of the inherent risks of Semi Closed Rebreather
training and shall agree to sign appropriate forms acknowledging those risks prior
to participating in-water activities. These forms may include, but are not limited
to: liability release; waiver and release of liability; safe diving practices; standards
for safety; statement of understanding; etc. The required Open Water Diver Certification
must already be completed. |
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The candidate must demonstrate Semi Closed Rebreather knowledge by taking and passing
an oral or written examination. This examination shall test knowledge of the Frog
Mark I Rebreather, physics of diving, use of PPO2 meters / Decompression PPO2 meters,
confined water skills and open water skills as presented in the course. |
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The candidate shall satisfactorily demonstrate the Frog Mark I Rebreather skills
required by MDEA. |
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Technical Training Prerequisites: |
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It is expected that the candidate will be an Advanced Open Water Diver, a Nitrox
Diver, and have a minimum of 50 open water dives of which at least 15 must be post-training
dives. It is highly recommended that Candidates be certified, as Dive Medic I. Candidates
are required to own an EAN Analyzer and be proficient in its operation. Candidates
with lesser qualifications may request a skills assessment of their abilities, and
suitability for SCR training. The assessment will determine their eligibility.
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Technical Training: |
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Technical Training on the Frog Mark I will be limited to breathing gases of 100%
oxygen and EAN mixes between 32% and 40%. |
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Classroom Sessions: |
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Technical Training will be comprised of 12 hours of classroom sessions that will
cover information on the physical description, operating principles, maintenance,
and use of the Frog Mark I Rebreather.
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These sessions will include:
- History of Rebreathers
- Breathing Circuit of an Oxygen Rebreather
- Breathing Circuit of the Frog Mark I Rebreather
- Assembly Matrix of the Frog Mark I Rebreather
- Location and identification of the cylinders utilized on the Frog Mark I. Purpose
of markings, valve, burst disc, care and maintenance, visual inspections, oxygen
cleaning requirements, EAN cleaning requirements.
- Identify the location, and operation of the open circuit bailout system. Define
the purpose of operation and decision process in activating the system.
- The Frog Mark I modular system design, is comprised of mouthpiece and breathing
hoses, manifold assembly, and system support housing.
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Frog Components and Operating Principles:
- Identify location, assembly, operation, and function of mouthpiece. Identify the
location, assembly and operational ranges of relief valve as well as its function.
- Identify location, assembly and orientation of breathing hoses.
- Identify location, assembly and positioning of the breathing circuit elbows onto
the manifold. Location and identification of the Exhale elbow including the oxygen
injector. Identify the operational ranges of the oxygen injector and the need for
adjustment to the individual candidates metabolic needs. Discuss individual metabolic
rates and the importance of them on the oxygen flow rate. Location and identification
of the Inhale elbow including the sensor for the PPO2 monitor.
- Identify the PPO2 monitor, location, assembly and application. Review operation
of the PPO2 monitor. Review calibration of the PPO2 monitor and the significance
of calibration on diver safety.
- Identify the location, assembly and positioning of the over pressure relief valve
on the manifold. Identify the operational ranges of the over pressure relief valve.
- Identify the location, assembly and operation of the diluent demand regulator.
- Breathing gases are delivered from the cylinders by two low pressure gas hoses with
distinct quick connect couplers, one for the O2 cylinder and one for the EAN cylinder.
- Review the location, assembly and operation of the oxygen cylinder, cylinder valve,
and first stage oxygen regulator on the system support housing. Verify cylinder
contents by utilizing analyzer.
- Review the location, assembly and operation of the EAN cylinder, cylinder valve
and first stage regulator on the system support housing. Verify cylinder contents
by utilizing analyzer.
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