Methods of decreasing the influence of the factors disturbing the reliability of leak detection systems

During implementation of leak detection and localization systems for liquid and gas pipelines the authors have met serious problems concerning reliability. The main problems were integrity (i.e. discontinuities) and quality of the input data acquired from telemetry systems, such as damages, bad calibration and drift of the measuring instruments and transmitters, bad balance between fluid entering and leaving the system and incorrect installation of temperature transmitters. The proposals how to overcome these problems have been presented.