Thanks for answers,
Probabaly, because of my English, I couldn`t ask my question properly.
What I want to ask: "How the Fuel Line Rupture is deteceted by the system itself", not by Pilot.
I mean, which kind of sensors may trigger this ECAM ?:
# Excessive fuel flow measured by flowmeter, FADEC?
# Fuel flooding, so wetting the sensors around the pipe or within the compartment where pipe is passing through?
# or another method...?
Thanks