Methods, systems, and computer program products for automatically
detecting leaks in a type III hydrant fuel piping system is described. In
one embodiment, the method includes automatically actuating one or more
valves to isolate a hydrant loop of a type III hydrant fuel piping system
from the remainder of the system. The pressure in the hydrant loop is
varied. The pressure in the hydrant loop is measured over time in
response to the varying of the pressure.