Bank size?

[sea_ledford]

I am not an engineer. I don't really know how this type of thing works. However, I have heard of scuba cylinders being condemned during a new inspection because of issues with their threads. How did this thread "damage" happen, I wonder?

rx7diver

Probably someone mistaking tap marks for cracks. But manufacturing issues happen too. I would certainly check out the internals on a new (or new to me) cylinder of any size.

 

[rx7diver]

From the FAQ: ...

Yes, I read this in the article you linked. I remain unconvinced that a periodic VIP is not necessary. I would have the periodic VIP's done, I think, if I had a cascade bank.

rx7diver

 

[Tracy]

I am not an engineer. I don't really know how this type of thing works. However, I have heard of scuba cylinders being condemned during a new inspection because of issues with their threads. How did this thread "damage" happen, I wonder?

rx7diver

That isn't damage, It is a manufacturing defect UE is not applicable for that. It is only allowed on retest and there are several rules about what cylinders allow it.