2.40 Thursday

A tactical approach for managed rehabilitation and maintenance programs
by Todd Porter

Pipeline rehabilitation and maintenance decisions are made using a wide variety of data, criteria, and expertise. The goal is to arrive at an optimal plan that considers risk and best return on R&M expenditures for aging pipeline systems in both regulated and non-regulated environments. In order to achieve these goals, historical, operations, and assessment data is gathered, aligned, and integrated as part of a baseline assessment.

Integrity threats are identified based on operations and industry experience, and combined with potential consequences to public safety, the environment, and business to clearly delineate high risk / exposure segments in the system. Integrity assessments are conducted in a prioritized manner, using the most appropriate technology and methods to address the threats. These include in-line inspection technologies: MFL, deformation, UT, INS (combinations thereof), direct assessment for EC and SCC threats, hydro testing, and other indirect methods. From these results, decisions are made and R&M plans developed.

To arrive at an optimal R&M plan, proper use of existing data, new integrity-assessment data, and decision / risk models is required. This paper / presentation will detail the tactical aspect of an effective integrity management platform. Using case studies, experience in decision support, operations priorities and execution of a rehabilitation plan using the data described with LinaViewPro will be presented. A process overview, results, and benefits will be given using these examples from operating oil and gas transmission pipelines.

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