Underground Construction Technology International Conference & Exhibition

Magnetic Tomography Method (MTM) is a non-intrusive, non-contact method of inspecting pipelines. MTM provides pipeline operators with a cost effective and efficient method to assess the condition of all pipelines (made of ferrous materials) including those that cannot be inspected by available tools since the inspection is conducted from the ground surface above the pipeline. MTM principle is based on detecting and analyzing changes in the magnetic field of the pipelines manufactured with ferrous materials. These changes or magnetic anomalies form in areas of stress concentration due to excessive mechanical loading, changes in structural conditions of the pipe material or combination of the above.