[RedBloodedAmerican]

Since 1959 there have been 26 documented fuel tank explosions/fires on transport aircraft including an Iran Air 747 in 1976.

Source please. I would like to see what you are using for a reference.

[Rokke]

Here's my source:

http://www.ntsb.gov/Publictn/2000/AAR0003.pdf

It starts on page 179. The section is titled "1.18.1 Accident Record and History of Fuel Tank Fires/Explosions on Airplanes"