The significance of corrosion protection in oil industry has always been very high. The reason is that corrosion often results in pipeline failure leading to oil spill and environmental damage. Wide application of inhibitor protection in TNK-BP in the recent years allowed to suppress internal corrosion to a great degree. At the same time, the problem of external corrosion of TNK-BP field pipelines remains acute. The situation is worsened by complexity of corrosion protection and absence of reliable methods to assess the corrosion of pipelines beyond design life. Traditional methods of inspection in the pits enable to evaluate selectively thickness of pipe wall and calculate the probabilistic remaining service life but they do not reflect real corrosion condition of pipeline especially in case of local corrosion which is the main cause of accidents.
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