Cathodic Protection Retrofit for Aging Municipal Water Infrastructure

摘要

Reinforced concrete towers in a water reservoir contain equipment to control water. Interruption in the operation of these towers causes a huge disruption in the municipal water distribution system. Operation in an aggressive environment contributes to corrosion. This article presents a case study on a comprehensive condition assessment and corrosion mitigation of an aging forebay outlet tower. The tower showed significant corrosion above the operating water elevation. The methodology for condition assessment, an impressed current cathodic protection design, and the construction challenges encountered due to schedule and operational constraints are addressed.