An Overview of New Progresses in Understanding Pipeline Corrosion

Abstract

An approach to achieving the ambitious goal of cost effectively extending the safe operation life of energy pipeline to 100 years is the application of health monitoring and life prediction tools that are able to provide both long-term remnant pipeline life prediction and in-situ pipeline condition monitoring. A critical step is the enhancement of technological capabilities that are required for understanding and quantifying the effects of key factors influencing buried steel pipeline corrosion and environmentally assisted materials degradation, and the development of condition monitoring technologies that are able to provide in-situ monitoring and site-specific warning of pipeline damage. This paper provides an overview of our current research aimed at developing new sensors and electrochemical cells for monitoring, categorising and quantifying the level and nature of external pipeline and coating damages under the combined effects of various inter-related variables and processes such as localised corrosion, coating cracking and disbondment, cathodic shielding, transit loss of cathodic protection.

An overview of major methods for inspecting and monitoring external corrosion of on-shore transportation pipelines

“…The principle of this pipeline condition monitoring tool is that real time monitoring of localised corrosion, ineffective CP, coating disbondment and degradation by placing sensors at strategic and 'worst-case scenario' locations of a pipeline would enable site-specific and in situ warning of pipeline failures. 96 These electrochemical methods have the potential of not only measuring corrosion rates but also more importantly they provide an insight into the electrochemical process. This is an invaluable contribution because measuring is the first step to understanding the electrochemical process leading to corrosion and to eventually help preventing it.…”

Towards the Development of Novel Hybrid Composite Steel Pipes: Electrochemical Evaluation of Fiber-Reinforced Polymer Layered Steel against Corrosion

“…Corrosion in metallic pipelines can be classified into two categories: external and internal. External corrosion is generally controlled using organic coatings and cathodic protection, while corrosion inhibitors are widely used to fight internal corrosion [9,10]. Various coating types have been used to protect pipeline surfaces against corrosion [11].…”

Structural and electronic properties of chromium carbides and Fe-substituted chromium carbides

“…They are used as a coating over metal surfaces due to its resistance towards wear and corrosion. Significance of Fe-Cr-C alloys as precipitated carbides is also well known in several industries, such as drilling [2,3], mining [4,5], oil and gas [6,7] and fuel cells [8,9].…”