...-m) Abstract AC Interference effects on pipelines are significantly impacted by electric transmission line design and proximity to the pipelines. Transmission line routing, phase conductor arrangement, vertical and horizontal phase conductor separation, tower construction, and tower grounding...

... which focused on the design considerations. Corrosion Control Corrosion Monitoring Cathodic Protection Commissioning Underground Corrosion Oil/gas/petrochem Pipeline AC Interference DC Interference Solar INTRODUCTION PILOT SOLAR PROJECTS – RISKS AND DESIGN APPROACH General A pilot project...

... the number of decoupling devices required to adequately protect the system. The remaining devices were ranked for replacement to a newer model of SSD that masks its capacitive effect. This paper will discuss the approach to the study, results, and future work to be completed. AC interference computer...

...Abstract An AC interference study was conducted in 2021 following a utility development with the addition of a high voltage AC powerline in Alberta, Canada. The study comprised of 11 pipelines and 4 powerlines collocating in several stretches totalling approximately 50 km of collocation...

... the appropriate corrective actions. Cathodic Protection Overprotection AC interference Remote Monitoring Coupon Reference standard INTRODUCTION If J.dc > 1 A/m2 then J.ac < 30 A/m²; or if J.dc < 1 A/m2 then J.ac < 100 A/m² In the case of underground pipelines, under...

.... Lessons learned during the mitigation and commissioning process are intended to provide guidance to operators encountering similar conditions on their pipeline systems. AC Corrosion AC frequency AC Interference AC Mitigation Cathodic Protection Corrosion Protection INTRODUCTION A corrosion...

...As a result of continued additions and upgrades to the nearby transmission line system, the pipeline system was subject to an ever-changing profile of AC interference peaks and valleys. A traditional AC mitigation approach would begin with a detailed engineering study. The study would rely heavily...

...) powerlines. As the complexity and length of the AC interference collocations increase, additional challenges and questions become apparent, such as where to start, and how long this could take and how accurate would such an AC threat assessment be? Scoping and defining the AC threat assessment criteria...

...This paper discusses how to evaluate the risk of AC interference hazards at pipeline facilities and the different factors and strategies to consider when designing an AC mitigation system. The paper focuses the discussion on AC interference hazards within pipeline facilities and does not cover...

...Under fault conditions, e.g., line-to-ground faults, the pipeline is subject to induced voltages due to electromagnetic coupling and currents flowing in the ground from the powerline structures, known as conductive coupling. Under these conditions, the AC interference can result in safety hazards...

... AC power lines were investigated to assess the AC interference corrosion risk of the test coupons. As-received each AC test station consisted of two ½ inch (1.27 cm) diameter and 1-inch (2.54 cm) long carbon steel (CS) coupons. Coupons are much larger than 1 cm² and current density...

... the magnitude of the issue, so the optimal DC decoupler can be chosen, minimizing project inefficiencies and costs. AC Interference Decoupler Capacitance Isolation Mitigation Cathodic Protection Energy Transmission Testing Corrosion Control Simulation and Modelling Test Methods INTRODUCTION...