Numerous studies and papers have addressed the need and technical merits of various external corrosion protection scenarios for ductile iron pipe. Most recently, a Design Decision Model was developed to select the optimum method of corrosion protection, considering both the likelihood and consequence of failure.
Corrosion under Insulation (CUI) and External Corrosion continue to be a major issue for Petrochemical facilities. Refineries have been investing in a CUI and External Corrosion inspection program. This paper details the methodology for addressing this damage and lessons learned throughout the implementation.
Control of external corrosion on buried/submerged metallic piping systems and other structures. Use of electrically insulating coatings, electrical isolation, and cathodic protection as corrosion control methods for existing bare, existing coated, and new piping systems. Interference currents. Historical Document 1976