My concern lies in the fact that if there was ever a fire, a bad problem would become much worse. Imagine a processor full of methanol laden hot oil, gushing out the side of a molten plastic cone bottom tank processor which ruptured due to a small fire which started from an electrical short from a chafed cord which ignited some spilled methanol on the ground. Suddenly the fire spreads as far as the oil is traveling.

My processor is made from a steel 55 gallon drum, and while a similar scenario with a small fire could just as easily occur, at least it would not be compounded with a lot of additional fuel spreading everywhere. I am always within 50 feet of my processor whenever I am reacting a batch anyway.

The whole process of making biodiesel involves plenty of risk as it is. Why add another unsafe component?