Vintage Pipeline Enhanced Corrosion Management Analysis

Vintage pipeline operators face increased regulatory challenges. These aging pipeline systems may have decades of metal loss and coating damage from soil interaction, pressure cycling, thermal stresses, and other physical phenomena that affects the pipeline’s mechanical integrity to make it more susceptible to leaks or ruptures. Aging pipeline systems are candidates for Enhanced Corrosion Management Analysis (ECMA) to effectively mitigate corrosion risks. The ECMA methodology begins with the integration and analysis of available corrosion control monitoring, maintenance, inspection, and assessment data, to identify the need to collect additional data. When all data deemed necessary to conduct ECMA is available, an analysis is conducted to identify the possible causes of corrosion metal loss in the pipeline system, e.g., inadequate cathodic polarization, poor or disbonded coating conditions, electrical shielding, stray current interference, or microbiologically influenced corrosion (MIC). Effective mitigation plans are then developed to address most probable causes of corrosion metal loss and integrated into the corrosion management program. A case study is presented to demonstrate the implementation of ECMA on a vintage pipeline system and the development of a 20-year corrosion mitigation plan to effectively minimize the corrosion risk on the pipeline. The case study also illustrates how engineering economic analysis can be used to guide decision making regarding operational life extension of the asset and how a well-planned corrosion management program can provide cost-effective, safe operation over the lifecycle of the pipeline.
Product Number: 51324-21127-SG
Author: Kenton Lawson; Jason Charles Land; Angel R. Kowalski
Publication Date: 2024