I. INTRODUCTION
This is the Instructor level certification course for Instructors wishing to teach the TDI Advanced Gas Blender Course. This course involves the blending of nitrox and Trimix.

II. COURSE OBJECTIVES
The objective of this course is to train Instructors to teach the proper preparation of high quality nitrox and Trimix gasses for use in technical diving.

III. QUALIFICATIONS OF GRADUATES
Upon successful completion of this course, graduates may teach the TDI Advanced Gas Blender Course.

IV. WHO MAY TEACH
Any active TDI Advanced Gas Blender Instructor Trainer may teach this course

V. INSTRUCTOR - INSTRUCTOR TRAINER RATIO
Classroom
Unlimited so long as adequate facility, supplies and additional time are provided to ensure comprehensive and complete training.

VI. INSTRUCTOR CANDIDATE PRE-REQUISITES
A. Minimum age2l
B. Minimum certification of TDI Advanced Gas Blender

VII. REQUIRED COURSE MINIMUMS
Classroom Hours - 6

VIII. REQUIRED SUBJECT AREAS
The following topics must be covered during this course. Instructor Trainers must use the TDI Advanced Gas Blender Instructor Guide and the current TDI Standards & Procedures Instructor Manual, but may also use any additional text or materials that they feel help present these topics.
A. The responsibility of the gas blender
B. Gasses of diving
1. Air
2. Oxygen
3. Nitrogen
4. Helium
5. Other gases


C. Oxygen handling
1. Oxygen hazards
2. Causes and prevention of oxygen fires
3. Oxygen system design
4. Local regulations for gas blending and handling
5. Oxygen compatible systems components
D. Gas Production
1. Equipment
a) Compressors
b) Cylinders
c) Filtration systems
d) Analog Gauges
e) Digital Gauges
E. Mixing Techniques
1. General Considerations
2. Continuous blending systems
3. De-nitrogenated Air Systems
4. Partial Pressure blending
a) Mathematics of partial pressure
b) Mixing by weight (optional)
F. Oxygen analyzing
1. Procedures
2. Oxygen analyzers
G. Cylinder handling & sign out

IX. GRADUATION REQUIREMENTS
In order to complete this course, the Instructor candidate must:
A. Satisfactorily complete the TDI Advanced Gas Blender Course written examination and be able to adequately explain each answer to a prospective student
B. Demonstrate mature, sound judgment concerning training, and execution
C. Demonstrate proficiency in blending and analysis of nitrox and Trimix mixtures
D. Demonstrate proficiency in teaching the TDI Advanced Gas Blender Program
E. One graded presentation on an Advanced Gas Blending topic

X. SUPPORT MATERIALS
A. Instructor Registration
B. TDI Advanced Gas Blending Manual
C. TDI Advanced Gas Blending Instructor Guide
D. Advanced Gas Blending PowerPoint Presentation Series