Aspects and definition of ILI anomaly sizing accuracy

摘要

ECONOMICALLY SUBSTANTIAL DECISIONS are made on the basis of pipeline integrity analyses. These analyses regularly depend on the results of pipeline inline inspection (ILI) and its reliability. Reliable information in this regard is not only detection, classification and sizing. A vital component is the accuracy or tolerance applied to these results in the integrity analyses. Where the individual sizing tolerance is not persistent, wrong integrity decisions, implicit over-conservatism or additional inspection expenses can be the consequences.