Yoopersup,
What sort of an installation is this referring to?
I know for a fact that choppers I have flown run on a variant of Kerosene and it has a flash point of about 250°C.
One other thing I do know, through experience as a FF, is that kerosene has the habit to change from a liquid to vapour very easily, about the same as propane, but not with the explosive force.
Unlike propane, the fumes from kerosene will drift upwards.