There are a few types of fuel for turbine engines, for example Jet-A, Jet A-1 and Jet-B.
Is it safe / practical to interchange these types of fuel for a generic turbine engine?
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If we are talking generic turbine engines then the answer is yes. Turbine engines will run on a wide range of fuels, I personally have flown a Military Helicopter, that normally runs on Jet A1 using AVGAS instead. The flight manual limited it to 10 hours of operation on AVGAS. Interestingly the same flight manual had other fuel types listed such as Deisel, and automotive gasoline.
The only difference I noticed on the different fuel was a slightly higher exhaust gas temperature for a given power setting.
Heavy duty industrial turbines are often run off crude oil!