| Duration: | Five days (minimum) 420 minutes minimum in water |
| Rebreather Course Prerequisites: | Minimum age 18 Provide proof of 50 logged dives Provide proof of TDI Advanced Nitrox Diver and Deco Procedures Diver or equivalent from agencies recognized by TDI If the rebreather is a TDI approved sidemount rebreather, the student must hold the TDI Sidemount Diver certification or equivalent and provide proof of 10 logged sidemount dives OR Minimum age 18 TDI Air Diluent CCR Diver certified or equivalent 30 hours on the CCR unit Six months CCR diving experience |
| Cost: | € 1000,00 Price includes gases and sofnolime |
Are you an open circuit technical diver looking to cross over to the
“silent” side? Or maybe you are a CCR Air Diluent Diver looking to progress
to the next level? Either way,
TDI’s CCR Air Diluent Decompression Course is the next step.Using the
latest technology in CCR’s can maximize your gas supply and provide
an optimum breathing gas for any depth by
maintaining a constant partial pressure of oxygen. Like having a blending
station on your back, a CCR is the ultimate tool for technical divers.
During this course, your TDI Instructor will teach you all of the necessary
skills to conduct decompression CCR dives to a maximum depth of 45 metres/150
feet using air diluent.
The open circuit technical diver, or entry level CCR diver, looking to utilize CCR technology to extend their depth limits and bottom times.
The TDI CCR Air Diluent Decompression Diver course takes an in-depth
look at all of the following and more:
History and
evolution of rebreathers
Comparison
of Open Circuit (OC), closed circuit, and Semi-closed Circuit Rebreather
(SCR) systems noting the pros and cons of each
Practical
mechanics of the system
Gas physiology
Proper scrubber
packing: in accordance with manufacturers recommendation
Electronic
or manual systems design and maintenance
Dive tables
Dive computers
Dive planning
Emergency
procedures
Dive checklists
Predive checks
All open
water dives must be between 9 metres/30 feet to 45 metres/150 feet
Two dives
must be deeper than 20 metres/66 feet and one dive must be deeper than
30 metres/100 feet
PO2 not to
exceed manufacturer’s recommendation or a working limit of 1.3 bar
All dives
to be completed within CNS percent limits with a recommended maximum
of 80 percent of the total PO2 CNS limit
Safety stops
to be conducted with a minimum 3 minutes at 6 metres/20 feet
When the user
opts for an automatic diluent valve (ADV) fitted by the manufacturer,
additional skills such as regular diluent gauge monitoring and addition
control must be emphasized
Calculate
all off board gas at 45.30 litres/1.0 cubic feet per minute usage to
cover stress situations
All dives
to be completed within appropriate constant PO2 decompression tables
Students must
do one bailout from depth on open circuit to include simulated decompression
Pre dive checks
utilizing the TDI Pre-flight checklist or manufactures required pre-dive
checklist
Unit build-up
Scrubber packing
Demonstrate
correct pre dive planning procedures
Mouthpiece
familiarity drills
Simulated
emergency procedures including: Gas shutdowns and loss of gas
Broken hoses
Flooded absorbent
canister
Carbon dioxide
(CO2) breakthrough
Semi-closed
mode
Low oxygen
drills
High oxygen
drills
Flooding loop
Electronics
and battery failure
Properly execute
the ascent procedures for an incapacitated CCR diver
Use of BCD/suit
and effective management of loop breathing volume for buoyancy control
Stop at 3-6
metres/10 – 20 feet on descent for leak bubble check
Electronics
systems monitoring for PO2 levels (SETPOINT) and switching set points
Manual control
of set point if electronically controlled CCR is not used
Use of lift
bag/delayed surface marker buoy and reel
Proper execution
of the dive within all pre-determined dive limits
Constant loop
volume management
Post dive
clean of unit to avoid contamination and spread of disease
Dive maintenance
of unit
Cell remove
and replace
Mouth piece
strip and rebuild
Replacing
batteries
Demonstrate
comfort swimming on surface and at depth carrying 1 bailout/decompression
cylinder
Demonstrate
ability to drop and retrieve 1 bailout/decompression cylinder while
maintaining position in the water column
Demonstrate
ability to deploy SMB or lift-bag solo and as a member of a team
Demonstrate
appropriate reaction to gas hemorrhage from manifold or first stage,
SPG and primary regulator
Demonstrate
appropriate reaction to simulated free-flowing deco regulator
Buddy breathing
deco gas for at least 1 minute
Oxygen rebreather
mode at less than 6 metre/20 foot stop
Upon successful completion of this course, graduates may engage in
decompression diving activities utilizing the CCR
they were trained to dive with, without direct supervision of the TDI
Instructor so long as the following limits are adhered to:
The diving
activities approximate those of training
The areas
of activities approximate those of training
Environmental
conditions approximate those of training
To a maximum
depth of 45 metres/150 feet
Utilizing
air diluent
Satisfactorily complete the TDI CCR Air Diluent Decompression examination
with a passing score of 80%, followed by 100% remediation by the Instructor
Complete all
open water requirements efficiently
Demonstrate
mature and sound judgment concerning dive planning and execution
Course must
be completed within 6 weeks from the starting date
Complete a
refresher course following a period of inactivity greater than 6 months
following the course