The capability to design and evaluate the optimal operation of cathodic protection systems
depends on the consideration of the fundamental variables, and having alternative tools as
data modeling, the optimization perspective. In case of cathodic protection modeling, it is
expected to determine the actual conditions and to discard those that does not affect to the
CP operation. Numerical modeling of CP Systems has been used to study the current and
pipe/soil potential behavior. Based on the boundary element method, with discrete
approaches, the CatPro software is applied1. With models from the identified geometries in
field and the pipeline conditions, an effective modeling methodology is established. This
work is focused on the study of a pipeline network at the city of Manzanillo, found in the
Pacific Coast of Mexico. The validation of the initial model is made against pipe/soil
potential data obtained from the CIS, which results in retro-alimentation data about the
quality and size of defects in the used coating for the models, obtaining a model that
represents the CP system conditions. Once the re-habilitation of the CP system, based on
the modeled results, the new pipe/soil potential values are compared with the predicted by
the model, and the conjunction of experimental and theoretical data gives information of
substantial elements for the pipeline network maintenance and generates a perspective of
continual parameters evaluation in critical sites predictable from the modeling procedure.
Keywords. Cathodic Protection; Modeling; Pipeline network improvement