The point is contrary to allegations that there is no way a fuel tank explosion can take place, there are multiple examples where it did happen. And I am on business travel and on an iPhone, so not looking up stuff right now (waiting for a table) I think there was at least one example where the center tank did explode.
The tankers share about 75% of systems, too include the center tanks.
Cheers table ready
But the disastrous fires that destroyed these aircraft occurred not in any thing that was shared. . . they occurred in the tanks being carried to handle the fuel being shipped as CARGO, not the fuel to fly the plane.