Very good story of you work experience.
We have a "molten salt" pot where cast iron automotive parts are cleaned at a temp of 750* F.
If water is trapped in any of the blocks or heads, we have explosions too!
when I first started working there 21 yrs ago no 1 told me what not to do. so I cleaned out the coffee pot throwing the wet coffee grounds into a dusty old shoot. didn't think much of it till they opened that shoot dropping the coffee grounds into a ladle thy were tapping into. BOOM!! 5 guys were blown to the grown, while I ran in the other direction.