Advances in Underwater Robotic Inspection

Advanced Non-Destructive Testing (NDT) technologies are the most effective tool in our ongoing fight to ensure the integrity of our offshore assets and subsea infrastructure against corrosion and other damage mechanisms. Over fifty years have passed since the first rigs appeared off the coast of California, in the North Sea, across the Gulf of Mexico, and around the globe. Much of the original structures and associated infrastructure remain in use today. Operating far beyond their intended lifespans, these structures, pipelines, and other subsea equipment are increasingly vulnerable to aging-related issues, with corrosion being the primary threat among various potential failure modes, including weld cracking. Since the early days, we have witnessed continuous, steady advancements. New materials have been introduced, pipeline designs now better account for the seabed terrain, and the construction, operation, and maintenance of structures and pipelines have become significantly more efficient. Despite improvements in corrosion protection, mitigation, and inspection technologies, the reality is that the longer a subsea asset has been in service, the more time corrosion or other defects have to develop. This is especially true for older assets installed before the availability of these advanced construction methods. Additionally, the marine environment is harsh and unforgiving, making the monitoring and maintenance of subsea assets integrity crucial, regardless of their age.