Controlled transients are reliable for fault detection

In the last decades, transient test-based techniques (TTBTs) have been proposed for fault detection in pressurized pipe systems. Such techniques, where pressure waves are injected in pipes "to explore" the system, are competitive with respect to other methods (e.g. inline techniques using sensors inserted into the pipelines). This article discusses the reliability of TTBTs for some real systems based on the results of case studies that fully confirm those of numerical and laboratory experiments.