Expansion has increased the risk of AC in pipelines. In this work, calculations of induced AC voltage and current are performed for scenarios involving: HVAC transmission powerline configuration, lateral distance to the transmission pipeline, and parallelism between the transmission lines, soil, and pipeline and coating properties.
In a previous investigation, AC corrosion rate data from weight loss experiments was compared with the results from a model for AC corrosion developed using a modified Butler-Volmer approach. In the present work, an extension of this is presented to investigate the influence of scale formation on AC corrosion rates.
Nuclear wastes are stored in large, underground carbon-steel storage tanks at the Hanford site. Carbon steels can become susceptible to localized corrosion. This paper presents the results of ongoing electrochemical investigations to understand the reasons behind the noble drift in the OCP of carbon steel in these waste simulants.