The Overland Pass Pipeline (OPPL) is a 760-mile natural gas liquids (NGLs) pipeline extending from Wyoming to Kansas. Currently, it transports 140,000 barrels per day of NGLs. A 15-mile corridor in rural Wyoming runs parallel to a 235 kV overhead transmission system. The alignment of these two systems has the potential to lead to accelerated corrosion of the pipeline. Kleinfelder was contracted to perform an alternating current (AC) interference investigation and modeling for this corridor.
The project corridor had been previously investigated and mitigated by another firm; however, the mitigation efforts failed, and the interference remained. In accepting this project, Kleinfelder agreed to re-investigate and propose an alternate means of mitigation in the remote and harsh environment. The closest town was 1.5 hours away, and the wind speed reached 30 miles per hour during the field investigation.
In order to provide a successful solution, Kleinfelder conducted frequent client meetings and utilized the latest modeling technology in SES® software. Constant communication regarding the work performed and its anticipated results helped the client visualize Kleinfelder’s innovative process. Providing the client with in-house capabalities, such as field investigations and modeling, made the process more effecient and sets Kleinfelder apart from its competition.
Kleinfelder’s experience in pipeline integrity management, proactive communication, and sophisticated modeling software resulted in a successful mitigation plan for the corridor. Utilizing an advanced software program and streamlined processes, Kleinfelder decreased turnaround time for analysis of findings from 60-90 days to within 45 days, despite location challenges.