Table 7: Pairwise ranking of failure criteria and likelihood.

Failure mechanismsAttributesLikelihoodPipeline segment
X1X2X3

External interferenceSabotage0.5250.2710.1790.076
Mechanical damage0.0810.0510.0190.011
CorrosionExternal corrosion0.1530.0930.0410.018
Internal corrosion0.0610.0090.0210.031
Structural defectsConstruction defect0.0450.0230.0140.009
Materials defects0.0210.0060.0070.008
Operational errorEquipment failure0.0500.0090.0180.024
Human error0.0190.0030.0070.009
OthersOthers0.0440.0230.0110.010

Overall0.4880.3160.196