Well, good, you can read.
I would not have used a steel tank that was 12 years out of hydro. But I don't always check the hydro dates of tanks I am provided. I probably check about half the tanks I am provided and have been pleasantly surprised to have never found one (other than my own) that was expired.
Vis is another interesting issue. Most of the tanks that I used this year had no VIS sticker. I suspect the vast majority of the participants on this thread used tanks in the past year with no VIS sticker. I had no safety concerns, never mind a "serious safety threat". Less drama and more facts.
I agree, the instructor needs to carry a good part of the blame for this tragic accident. I just see nothing to be gained by piling on BS accusations or in failing to recognize the responsibilities and deficiencies of others, including training agencies.
1- you keep dodging the issue. The instructor had an OBLIGATION to make sure the student was safe. Giving him a tank out of hydro was NOT safe. The instructor had a duty to inspect the life support equipment he was handing his student.
Do you agree or not?
2- other than the instructors errors and parents lying- identify any other contributing factor to the death based on the facts at hand.
Name them?
3- what act, omission, or error was caused by the Agency in this case?
Identify it specifically - not with done vague ties of "standards need to be better".....