Lifelines play a crucial and essential role in human life and in economic development. The
resilience of those systems under extreme events as earthquakes is a primary requirement,
especially when large amount of toxic and flammable material are transported. In this work,
the seismic vulnerability of buried gas and liquid pipelines has been analyzed, starting from
a large number of damage data to pipelines collected from post-earthquake reconnaissance
reports. Seismic fragility formulations and threshold values for the earthquake intensity with …