Possibly things have changed in the fuel supply network OME.
Many years ago I did the automatic security gates at the JUHI fuel installation at Kingsford Smith Sydney Airport next to the international terminal, and they had a direct pipeline to the refinery at Clyde.
I looked after the complex for many years.
I was told back then, that due to underground water from the Cooks River, much of the airport was actually slowly sinking, which made one think about the security of underground pipes. In fact the the area surrounding the adjoining office had sunk to the point that it became necessary to have an additional new step built to get into the offices, whereas it had once been level.
The building is still there, so all's well that ends well, they say.