Distillation

I always treated the facilities as if they were made of glass, so I could "see" the process inside and understand the behaviour in terms of fluid dynamics.
Consultants? Yes, they'll do a study. And the result is usually that you need another study. Often, they end up blaming the operators.
What they don't teach you at university is that most plants produce to contract, and shutdowns are tightly scheduled, usually no more than two weeks. That makes it critical for equipment internals to be eas...