Purpose

The TDI Nitrox and Advanced Gas Blender courses are designed to train qualified candidates to become competent in mixed gas blending techniques. Although two separate certifications, these courses may be taken simultaneously upon request.

Prerequisites

• Must meet the TDI General Course Prerequisites

• Must be employed by a dive facility or be Advanced Nitrox certified and have a need to become a Gas Blender

• Must be recommended by an TDI Instructor or facility

• In order to attend the Advanced Gas Blender program student must be qualified as a Nitrox Gas Blender. Both programs may be taken consecutively

Training Materials

TDI Nitrox Gas Blending Manual and if taking the Advanced Gas Blender course, the TDI Advanced Gas Blender Manual

Duration

The TDI Nitrox Gas Blender course includes six hours of academics generally taught in two three hour sessions as well as three hours of hands-on gas blending of Nitrox gas mixtures.

The TDI Advanced Gas Blender course includes an additional three hours of academics as well as three hours of hands-on gas blending Tri-Mix gas mixtures.

Course Content

The TDI Nitrox and Advanced Gas Blender courses cumatively include a minimum of fifteen hours of instruction designed to train students to become competent in mixed gas blending techniques. Subjects will include operational concerns, blending standards, gas blending procedures, gas blending theory and system design.

Academic Topics

• TDI organization

• Course Standards and Procedures

• Course completion requirements

• Gas blending history

• Gas blending theory

• Fire prevention

• System design

• Blending standards

• Labeling and analyzing

• Nitrox blending

• Tri-Mix and Heliox blending