Offshore Tubular Component Enhancement

A client turned to Applied Ultrasonics for help with improving fatigue performance of vital tubular components in a new design-build of an offshore structure. The application environment proved to be a challenge. More traditional methods for improving fatigue performance were insufficient due to water depth, pressure and the regulatory environment. To complicate the situation further, the location of the weldments to be treated by Applied Ultrasonics’ UIT was located 35 feet inside of a tubular component too small for a technician to fit inside and too far inside of the component to be treated with standard methods.

The fabricator also brought up concerns that they believed the Applied Ultrasonics’ Esonix UIT process would not achieve the required surface finish requirements.

Applied Ultrasonics sent an Engineering Services team to evaluate the problem and environment before recommending a solution. At all stages of the process, the customer, engineering firm and fabricator were consulted.

The resulting Applied Ultrasonics’ plan that was approved, involved a unique and proprietary solution. Applied Ultrasonics designed and built a device that enabled automated, controlled, repeatable and high-quality UIT treatment of internal diameter (ID) surfaces. The device was capable of reaching ID surfaces up to 50 feet from the end of the tube. Applied Ultrasonics sent samples treated with Esonix UIT to the owner, engineering firm and fabricator for surface finish review.

The quality of the surface finish was unanimously approved. Applied Ultrasonics dispatched a certified treatment and inspection team to the jobsite. Working around the clock with the fabricator and engineering firm, Applied Ultrasonics completed the project within a demanding shipping schedule.