SNSI – Gas Blender Quality Control

1

Student and course information

First name

Last name

Email

Date of birth

Course completion date

Dive Center or facility where you attended the course

Instructor’s first and last name

2

Theory, materials and exam

Did you receive and use the SNSI Gas Blender training materials?

YesNo / I do not remember

Did you pass the final exam with at least 80% correct answers?

YesNo / I do not remember

If you made mistakes in the final exam, did the Instructor review them with you and verify that you understood them?

YesNoNot applicable: I made no mistakes

3

Practical activities

Total course duration in hours

Number of practical Nitrox blending sessions

Number of practical Triox and Trimix blending sessions

Were the practical sessions conducted at a real filling station?

YesNo / I do not remember

Which of the following did you complete during the practical sessions?You may select more than one answer.

Calibrating and using an oxygen analyzer to determine the oxygen content of an EAN mixture Filling a cylinder with an EAN blend with a final oxygen content within ±1% of the target Completing a cylinder content tag/sticker Completing and signing the filling station’s fill log Calibrating and using a helium analyzer to determine the helium content of a helium-based mixture Filling a cylinder with a helium-based mixture with a final oxygen content within ±1% and helium content within ±3% of the target None of these

Which of the following did you personally demonstrate to the Instructor?You may select more than one answer.

Filling a cylinder with a Nitrox mixture and correctly analyzing its content Filling a cylinder with a Trimix or Triox mixture and correctly analyzing its content Correctly updating the fill register and completing the sticker on the analyzed cylinder

4

Supervision and ratios

Was the Instructor present and directly supervising all course sessions?

YesNo / Not always

Maximum number of participants present during the sessions

Number of Instructors and Certified Assistants present

5

Your experience

At the end of the course, did you feel able to prepare Nitrox and Trimix mixtures, analyze them and advise a diver on the mixture to use and its maximum operating depth?

YesNo / Not completely

Briefly explain why

How would you rate your Instructor’s professionalism?

GoodAdequatePoor

Do you think you will ask your Instructor to attend additional courses?

YesNo

Would you like to add any comments, difficulties encountered or positive aspects of the course?