[thackney]

Picture courtesy of FReeper WhiskeyX

[thackney]

For comparison purposes, this is what I think of as a large refinery fire.

A smaller fire might look like, but also note on the right the large controlled flames coming from the flare in an emergency condition.

[thackney]

This is an example of a refinery with multiple emergency flares going off. Depending on your point of view, the flare can be hidden behind tanks and other structures.