Decompression Procedures



Course Structure and Duration

What you will learn:

Equipment Requirements (in addition to basic equipment)

This course examines the theory, methods and procedures of planned stage decompression diving. This program is designed as a stand-alone course or it may be taught in conjunction with TDI Advanced Nitrox, Advanced Wreck, or Extended Range Course. The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maximum depth of 45 metres / 150 feet unless taught in conjunction with the TDI Extended Range Course. The most common equipment requirements, equipment set-up and decompression techniques are presented. Students are permitted to utilize enriched air nitrox (EAN) mixes or oxygen for decompression provided the gas mix is within their current certification level.
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1. Overview of Decompression Safety Stops Compared to Required Stops
2. Physics
3. Physiology
4. Decompression Options
5. Equipment Considerations
6. Dive Tables vs. Computers
7. Dive Planning
8. Procedures
1. Minimum age 18
2. Minimum certification of SDI Advanced Adventure Diver , Advanced Diver, or equivalent
3. Provide proof of 25 logged open water dives
1. Four dives are required, 2 of those dives must be deeper than 30 metres / 100 feet
2. If advanced nitrox is taught in conjunction with decompression procedures only a total of 6 dives are required
3. Only 2 dives from advanced wreck course may be credited towards the total dives required
4. TDI allows instructors to structure courses according to the number of students participating and their skill level
1. Primary cylinder(s), cylinder volume appropriate for planned dive and student gas consumption
1. Decompression mix cylinder(s)
2. Depth gauge and automatic bottom timer and / or dive computer
3. Regulator(s)
a. Primary and alternate 2nd stage required on all primary cylinders
b. Submersible pressure gauges are required on all primary cylinders
4. Buoyancy compensator device(s) (BCD) adequate for equipment configuration
5. Line cutting device
6. Jon-line and other rigging lines as dictated by site conditions
7. Ascent reel with lift bag /surface marker buoy
8. Oxygen (O2) analyzer; may be supplied by the instructor
9. Exposure suit adequate for the open water environment
10. Underwater slate
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