I. INTRODUCTION
HE integrity of offshore platforms, oil ducts, gas ducts, electric power towers, bridges, etc., of steel when confronting corrosion depends strongly on the integrity of the components that form the structural systems [1], [2]. Therefore, it is of high relevance to study the deterioration in time and the means to reduce risks in these structural systems; there are very important contributions of optimal inspection and maintenance [3] – [6]. An optimal inspection plan involves several aspects such as: cost and quality of inspection, cost and quality of repair, failure costs, capacity and demand of the system, net discount rate, uniform