WORRIED - Safety of an in tank electric fuel pump

Hello,

Today a friend of mine showed me the in-tank electric fuel pump of my 1993 Mercury Tracer.

He said -It`s incredible how this electric thing with bare wires at it`s connection points is submerged in gasoline and doesn`t cause a fire-

I have not slept since.

How dangerous is an in-tank ELECTRIC fuel pump?.

Has anyone wondered what if there`s a spark caused by this in-tank electric motor of the fuel pump?.

Why doesn`t the motor or cable endings short circuit when submerged in gasoline?

Look at a picture here:
http://en.wikipedia.org/wiki/Fuel_pump

I`m really confused and worried, so comments, opinions, links and professional advise are very welcome.

Thanks.

The no sleeping guy.