Average lifespan of aluminum cylinder

[rjack321]

And in that 30 years of millions of tanks, there haven't been enough incidents to warrant a recall of 6351 cylinders.

Shrugs if you say so. There is no global datebase of cylinder failures. PSI has been repeating this exact same trope for over 15 years with the exact same numbers - and I know of many catastrophic 6351 failures in that timeframe with a few fatalities.

 

[Bob DBF]

And in that 30 years of millions of tanks, there haven't been enough incidents to warrant a recall of 6351 cylinders

Shrugs if you say so. There is no global datebase of cylinder failures. PSI has been repeating this exact same trope for over 15 years with the exact same numbers - and I know of many catastrophic 6351 failures in that timeframe with a few fatalities.

DOT does not recall tanks based on worldwide statics, or not adhering to their protocals. If you know of all these catastrophic failures and deaths in the US, perhaps you should notify DOT. Other countries have their own governing bodies, if the accidents are elsewhere.

 

[rjack321]

DOT does not recall tanks based on worldwide statics, or not adhering to their protocals. If you know of all these catastrophic failures and deaths in the US, perhaps you should notify DOT. Other countries have their own governing bodies, if the accidents are elsewhere.

there was one in FL and another in GA within the last 7 or 8 years.

they wont recall these cylinders for the same reason the coast guard doesnt inspect boats carrying 6 or fewer passengers for hire. "it's not worth it"

 

[kammel78]

they wont recall these cylinders for the same reason the coast guard doesnt inspect boats carrying 6 or fewer passengers for hire. "it's not worth it"

This is not even remotely similar or comparable.

You're comparing the coast guard having to exert time and effort in inspecting tens of thousands of boats versus DOT updating a memo that states 6351 alloy cylinders shall no longer be recertified.

 

[rjack321]

This is not even remotely similar or comparable.

You're comparing the coast guard having to exert time and effort in inspecting tens of thousands of boats versus DOT updating a memo that states 6351 alloy cylinders shall no longer be recertified.

LOL that's not how this works.

The staff time to do anything is not where the expense lies. Regulations are not written in a vacuum and if enough money is involved will almost always get litigated into the ground. The cost to replace tens of millions of beverage CO2 cylinders is a powerful demotivator for Pepsi, Coke, and restaurants everywhere. To be fair these are much lower pressure than scuba cylinders and do not have a record of catastrophic failures killing fill station operators or owners.

6351 scuba cylinders are being taken out of service at a brisk clip with only the occasional fatality. Part of the reason for that is the crazy cost of a hydro & eddy current. Around here it's about $65 which is more than 1/4th the cost of a new cylinder. All to requalify something that only one shop in all of Western WA and BC will actually fill. So they get recycled long before failing. In fact the only ones you'll find around here "found" in some garage and decades out of hydro. It's fairly easy to say none are failing when the denominator is dropping like a stone. In other regions that is sadly not the case, hence multiple fatalities in places like GA and FL and even more abroad where even getting a hydro nevermind an eddy current test is a challenge.

 

[bakodiver391]

I had one that scared the crap out of me. It had a crack propagating circumferentially around the base of the tank neck. I've never heard of that before but the valve would have made a nice projectile if it let go.