There are some eye witness accounts about corrosion around the base of the tank. One way in which that could have caused this is because corroded metal takes up more space than the original and this could put point stresses on the acrylic. I haven't seen any engineering drawings (I did try to find some but there are only pretty pictures) so I'm not sure how much effect that would have but keeping the base corrosion free would seem to be an absolute requirement regardless of whether or not it would have a disastrous effect like this. So I will have to wait until the investigators have gone all over this, given the amount of money involved there is bound to be a very thorough investigation and after having seen a couple of aircraft accident investigations conclude with entirely different findings than the first 24 hours of speculation I've learned that to be patient usually pays off.

Zero Hedge is not a reliable source of information. They also tend to push a lot of Russian fake news/propaganda. And of course Putin would love to have a major news item showing how the West’s gas sanctions have harmed the West.

Wow, that guy is ... extreme. I'm glad you posted the link, but I'd personally take any conclusions he draws with a grain of salt.