TDI Helitrox

The TDI Helitrox Diver course examines the theory, methods and procedures for planned stage decompression diving utilizing Helium in the breathing mixture. This program is designed as a stand-alone course or it may be taught in conjunction with TDI Advanced Nitrox at the discretion of the instructor.

What will I do?

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. The most common equipment requirements, gear set-up, and decompression techniques are presented. Students are permitted to utilize Enriched Air Nitrox and Helium mixes with no greater than 20% He content, and up to 100% oxygen for decompression diving provided the gas mix is within their current certification level. Breathing gas mixtures containing more than 20% Helium or less than 21% oxygen are not permitted (+/- 1%).

Student Prerequisites

  • Minimum age 18
  • Certified as an SDI Advanced Diver (with Deep specialty) or TDI Intro to Tech or equivalent
  • Certified as a TDI Advanced Nitrox Diver or equivalent. Student may be enrolled in both the TDI Helitrox and Advanced Nitrox course at the same time
  • Provide proof of 50 logged dives

What will I learn.

Advanced decompression dive planning including:

  • Gas planning based on equivalent narcotic depths, nitrogen and helium absorption and elimination, CNS and OUT limits, Isobaric Counter diffusion, volume requirements, etc.
  • Decompression gas choices
  • Tables vs. personal dive computers
  • Emergency and contingency planning (equipment failure, omitted decompression, etc)
  • Decompression diving procedures
  • Equipment selection
  • Pre-dive checks and drills
  • Stress analysis and mitigation
  • Following a decompression schedule
  • Gas switching
  • Team awareness and communication
  • SMB/lift bag deployment
  • Proper trim, buoyancy and finning techniques
  • Management of multiple decompression/stage cylinders
  • Emergency procedures (equipment failures, catastrophic gas loss, omitted decompression, navigational errors, injured/unconscious diver, etc)
  • Equipment considerations, cylinder labeling, analyzing trimix nitrox and mixes, and gas blending procedures

TDI HELITROX DIVER MINIMUM CERTIFICATION REQUIREMENTS:

  • Satisfactorily complete the TDI Trimix Diver course written examination
  • Complete all open water requirements safely and efficiently
  • Demonstrate mature, sound judgment concerning dive planning and execution

฿30,000

+ Helium Costs

To book this course, a 20% ( ฿6,000 ) deposit is payable now. The balance is due on arrival.

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