I'm back. I did some research. The tank implosion was caused by condensed vapor cooling. Steam, in fact.
>>4126004 This retarded fag is too simple to understand the purpose of venting the tank. He also doesn't understand that being able to withstand great internal pressure is different from being able to withstand great external pressure. Those rail tanks can hold many atmospheres pressure within them, but will collapse if they are a vacuum inside.
>>4126094You're trying, but you're wrong. If the tank was sealed the pumps used by the rail company to transfer fluid would just stop pumping fluid once they were fighting a vacuum. You need special pumps to pump against a vacuum even under one atmosphere of external pressure.
Even so, it doesn't matter. The mechanism of your mistaken theory is the same. 1 atmosphere external pressure, vacuum inside the tank. Tank collapses.
When a vapor condenses into a liquid in a sealed container the pressure drops. Like when you put hot tupperware container in the fridge, and later come back and the top is sucked down. Like when you carry a half full plastic bottle of water or soda out into a cold day from inside the warm house and the bottle slightly collapses.
I'm a fucking chemical engineer, for christ's sake. This
>>4126004 simple turd had me questioning myself. Unless he is a troll. Then he trolled me good.
Now, back to BOOM!