XR Training Standards and Procedures

XR Programs

Gas Blender ( ISO 13293 )

Intent

The SSI Gas Blender program provides students with the ability to blend nitrox and helium-based trimix blends.
There are two possible certifications for this program:
  • Nitrox Gas Blender
  • Trimix Gas Blender

Minimum Instructor Rating

An active status Gas Blender Instructor may conduct the Gas Blender program.

Student Prerequisites

  • Minimum age: 18 years old.

Duration

  • Recommended hours for completion: 6-8.

Minimum Equipment

  • Access to a blending station with gases capable of producing nitrox blends.
  • Access to a partial pressure blending station.
  • Gas analyzer(s) suitable for blends up to 100% oxygen and a helium analyzer if producing any helium-based trimix blends.

Requirements For Completion

Nitrox Gas Blender

  • Complete Academic Sessions 1-5 and assessments as outlined in the instructor manual for Gas Blender.
  • Complete a Nitrox Gas Blender final exam.
  • Complete Practical Application Sessions 1 and 2 as outlined in the instructor manual for Gas Blender.

Trimix Gas Blender

  • Complete all academic sessions and assessments as outlined in the instructor manual for Gas Blender.
  • Complete a Trimix Gas Blender final exam.
  • Complete Practical Application Sessions 1 through 4 as outlined in the instructor manual for Gas Blender.

Sequence

  • Academic sessions must be completed prior to conducting the practical application sessions.
  • For Trimix Gas Blender students, the requirements for Nitrox Gas Blender must be completed before conducting the trimix practical application sessions.

Certification

  • Nitrox Gas Blender certification entitles the holder to blend nitrox-based gases.
  • Trimix Gas Blender certification entitles the holder to blend nitrox- and helium-based trimix gases.
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