A semi-quantitative scoring protocol was developed to identify pipeline systems with the highest relative susceptibility to coating CP shielding. The scoring protocol takes into consideration the type of coatings, surface preparation, types of soils,…
The objective of this project was to better understand the failure mechanisms of pipeline coatings, and to determine if the coating damage is conducive to external corrosion or SCC. The focus was on coatings where the failure mechanism and…
To mitigate and prevent corrosion of pipelines, cathodic protection (CP) is imposed in the form of impressed current, sacrificial anodes (e.g., Mg ribbons), or a combination of the two. To reduce the CP current load and aid in corrosion prevention,…
Protection of gas-transmission pipelines from external corrosion is achieved by the application of a good anticorrosion coating and cathodic protection. In very rocky areas, pipeline-construction operations sometimes dictate that an external…