Metallurgical analyses of pipeline failures are an integral part of good integrity management
programs. Failure analyses are used not only in establishing the metallurgical causes of the
failures, but also in identifying potential time dependent threats, establishing damage rates,
and validating reassessment intervals. Analysis of un-failed pipe containing anomalies can be
used to improve the sentencing and sizing of anomalies detected by in-line inspection. This
paper provides several case histories in which metallurgical failure analyses were used to
enhance integrity management programs.