Just like to add my tuppence worth here as a mechanic, this very nearly happened to me.
When the fuel is lifted from the ground outlets using a pump truck(not bowser) sometimes the gates/stands refuel points can be in a bad position in relation to centreline and engine positions.
This can result in overtension in the fuel hoses and couplings when you raise the platform to access the control panel.
In my case the hose coupling broke.I got a soaking and fuel poured onto a hot engine but luckily no flames and the refueller was quick on the dead mans trigger.
