Understanding CCR - In Depth

Transcription

1 Mathew Partridge Technical & Rebreather Instructor Trainer

2 Your Rebreather Course Outline Day One: Introductions & Paperwork Quick Quiz The Theory - Rebreather Academics Day Two: Workshops Confined Water Day Three: Academic Development Two Dives Day Four: Academic Development Two Dives Day Five: Academic Development Two Dives Final Exam Recommended Reading: Manufacture Manual Training Agency Manual Rebreather Simplified - Dr Mel Clarke Deeper Into Diving - John Lippman & Dr S. Mitchelle Mastering Rebreathers - Jeffrey E. Bozanic Pro-Tech Glossary

3 THE THEORY 1. History of Rebreathers 2. Pressure Review 3. Respiratory System: 3.1. Blood Circulation & Path 3.1. Inert Gas Absorption & Elimination 4. Gas Physiology: 4.1. Oxygen Toxicity CNS Pulmonary Hypoxia 4.1. Hypercapnia Factors Relating to CO 2 Production 4.1. Inert Gas Narcosis 4.1. Carbon Monoxide Smoking & Diving 4.1. Decompression Theory History of Decompression Dissolved Gas Theory Tissue Compartments Half Times M-Valves Free Phase Gas No Deco Limits Ascents/Safety Stop Repetitive Diving Constant PPO 2 vs. Nitrox Dive Tables/Computers/Software 4.1. Decompression Illness CAGE & Bubble Formation PFO Contributing Factors First Aid for DCI 5. Formulae: 5.1. Dalton s Law 5.1. Equivalent Air Depth 5.1. Gas Requirements 5.1. CNS Exposures 6. Decompression Science: 6.1. Tables, Computers & Software 7. Dive Planning: 7.1. Operational Logistics 7.1. Gas Requirements/Team Concept 7.1. Oxygen Limits 7.1. Nitrogen Limits 7.1. Personal Comfort Zone 7.1. Emergency Medical Services 7.1. Environmental Considerations General Diving Conditions Tropical vs. Arctic 8. Emergencies: 8.1. Self Rescue You run out of Diluent? You run out of O 2? Cell Warning/Errors Loss/Frozen Display High Oxygen Hypercapnia Narcosis Hyperthermia BOOMS!!! Computer Failure Flooded Loop BCD Failure Lost Bailout Gas Sharing 8.1. Team Rescue Convulsing Diver Unconscious Diver Decompression Illness Entanglement And the list goes on... (What if...) 9. Workshops: 9.1. Full Unit Workshop 9.1. Electronics Workshop 9.1. Deco Software Workshop 9.2. General Maintenance Workshop

4 THE REBREATHER 10.Different Rebreathers: eccr mccr SCR pscr O 2 Rebreather 11. Rebreather Components: The Loop Counterlungs Breathing Hoses Mouthpiece (DSV vs. BOV) One-way Valves, Directional Flow Work Of Breathing O-ring seals Manual Injectors OPV T-pieces ADV Switch Blocks, Manifolds, Offboard Connectors Scrubber Chemical Reaction Radial Design Axial Design Scrubber Material Pre-packed Scrubber Hydrophobic Membranes Work Of Breathing Filling Techniques Failures Displays PPO2 Display LCD Electronic Displays Algorithm/Software Applications Heads Up Displays Redundant Monitoring Audible Alarms Batteries Gauges Regulators Balanced Intermediate Pressure Pressure Relief Valves Low & High Pressure Hoses O 2 Clean Wing, Backplate & Harness Single vs. Dual Bladder Aluminium, Steel, Soft-pack Cylinders Steel, Aluminium Size/Capacity Valves Mounting Systems 12. Electronic Component: Computer/Menu Options Calibration Techniques Voting Logic Set-Point Selection Display Switches Pressure Sensors Oxygen Injection Methods Solenoids Constant Flow Orifice Manual Manipulation Oxygen Cells CO 2 Monitors/Temp Sensor Safe-guards/Life-support 13. Additional Equipment: Stage/Bailout Exposure Protection Accessories General Diving CCR Specific Full Face Mask Super Simple Theory

5 THE DIVE 1. Pre-Diving: 1.1. Check Lists Unit Specific Checklist M s Checklist 1.2. Gas Fills 1.3. Gas Analysis & Labeling 1.4. Transportation 1.5. Bailout Requirements 1.6. Buddy Checks 1.7. Hand Signals 1.8. Pre-breath 1.9. Dive Plan Considerations NDL/Deco Environmental Considerations CNS EMS Team/Buddy/Solo/Alpinist Theory 4. Post Dive: 4.1. Repetitive Dives 4.2. Post Day Maintenance 4.3. Scheduled Maintenance 4.4. Annual Servicing 2. The Dive: 2.1. Handset Monitoring PPO Battery Voltages 2.2. Gas Awareness 2.3. Weighting & Trim 2.4. Bubble Checks 2.5. Menu/Set-point Manipulation 2.6. Cell Verification 2.7. Minimum Loop Volume 2.8. Decreasing Loop Volume 2.9. Communication General Safe Diving Practices 3. Ascent: 3.1. Gas Awareness 3.2. Expanding Loop Volume 3.3. Set-Point 3.4. Ascent Speed 3.5. Bailout Considerations 3.6. SMB Deployment 3.7. Safety/Deco Stop

6 THE SKILLS 1. Standard Skills: 1.1. Unit Setup & Inspections 1.2. Calibration Techniques 1.3. DSV/BOV Manipulation 1.4. Bubble Check 1.5. Equalizing Air Spaces 1.6. Linearity Check 1.7. Buoyancy Control, Correct Weighting & In-water Trim 1.8. Set-point 1.9. Handset Monitoring, Menu Modes Computer Setup Gas Awareness Minimum Loop Volume Cell Verification SMB Deployment Communications Ascent Control 3. Survival Skills: 3.1. Unconscious Diver on CCR 3.2. Oxygen Convulsion 3.3. Tired Diver 3.4. Suspected DCI 3.5. Hypothermia 3.6. Nausea 3.7. Entanglement 3.8. Lost Gas 3.9. What If s Skill Development: 2.1. Bailout 2.2. Diluent Flush 2.3. Correct use of the ADV 2.4. Water in Breathing Hoses 2.5. Flooded Loop 2.6. High Oxygen Problems 2.7. Low/No Oxygen Problems 2.8. Hypercapnia Management 2.9. No Diluent BOOM Drills Electronic Failure HUD Skills Buoyancy Failure/Loss Manual Flight of the Rebreather Correct use of Off-board Gas Removal/Replace Stage/Bailout Tanks SCR Mode Oxygen CCR at 6m