Roger wrote:

Although he recommends storing the tanks laying down, some regulations
may require storing them upright and safety chained to prevent falling
over.

Any idea why upright is a good idea? I've always heard it's safer, but never
heard a reason why that would be true.

One thing he didn't mention about transportation: Never, move or
transport a high pressure cylinder without the screw on cap in place!

Neither of my tanks (neither acetylene nor oxygen) has provision for a cap.
Unfortunately.

George Patterson
The desire for safety stands against every great and noble enterprise.