Yep, I can't conceive of how a massive complex with thousands of tanks, valves, and pipes filled with flammable and explosive liquids and gases can ever have an ACCIDENTAL explosion.
Nor could I imagine that a few shady operators in the futures markets have a hand in having some low life throw a monkey wrench into that complicated mess, nope couldn't imagine that.
There have been about a dozen such explosions in the last year ... more than in previous years. One was not too far away from me, near Greeley. It lit up the sky. Some might well be accidental. Some might not be.