The facility can be run on a skeleton crew normally, providing a reliable base-load volume while having the ability to ramp up refining volumes as circumstances require.
But then what's the point of the fuel supplies and secondly why aren't the businesses themselves keeping their own stock piles?
Why should I, humble citizen, fully kitted out house with Solar+Battery+Heat Pump+EV have to subsidise people and companies who refuse to electrify and instead rely on recycled dinosaur bones?