This unique proprietary method of pipeline inspection is based on the inverse magnetostrictive effect (Villary effect) – the change of the magnetic susceptibility of a material when subjected to a mechanical stress. Method uses “natural” magnetization of the ferrous pipes by magnetic field of the Earth.

Magnetic tomography charts the attributes and characteristics of pipe sections by registering and analysing changes in the magnetic field of the pipeline. These changes are related to stress which in turn are related to defects in the metal and insulation. Magnetic measurements data is collected from the ground surface and anomalies detected are a function of stress, mechanical loading and structural changes in the metal.


  • Adoption of Land MTM for subsea application
  • Joint Technical Development between Petronas Carigali and Transkor-K, R & D centre, Moscow.
  • Research started in 2008, now ready for commercial inspection