This happens when you don't properly vent a sealed storage tank before emptying it This happens when you don't properly vent a sealed storage tank before emptying it. Hot gas/air in a sealed container and you let it cool. The air pressure difference inside is so great that the structure is compromised. http://www.liveleak.com/view?i=72e_1208694365
Haha, that was hella funny, it would be more funny if all of the other storage tanks would break apart too.