Assessment of AC Corrosion Probability in Buried Pipelines with a FEM-Assisted Stochastic Approach

In this paper, a stochastic approach is combined with field theory and circuit methods to study how the geometrical electrical properties of holidays (defects or pores in insulating coating) metallic pipeline influence probability exceeding current density limit for corrosion. Three-dimensional FEM simulations are conducted assess shape resistivity pore on computed spread resistance value. The obtained results then used evaluate given value different sizes soil resistivities. Finally, case 50 Hz interference along pipeline-transmission line routing examined. probabilistic presented paper allows sections more subjected induced AC corrosion risk be identified as an auxiliary tool adopting preventive protection countermeasures. Lastly, unlike most papers devoted assessing electromagnetic pipelines, present work uses rather than deterministic approach, representing its main novelty aspect.