As offshore and marine structures age beyond their original design life, fatigue damage in welded joints becomes one of the most persistent and critical integrity challenges operators face. Addressing this challenge requires a structured, engineering-led approach — one that combines accurate condition assessment with proven intervention techniques. LETS Global’s Weld Repair and Fatigue Life Extension programme, powered by Ultrasonic Impact Treatment (UIT), delivers exactly that.

The programme begins with a comprehensive screening of fatigue-critical weld locations, identifying stress concentration zones and performing detailed fatigue life assessments to prioritise welds that require intervention. Once high-risk areas are defined, our specialists carry out targeted weld repairs to restore geometry and eliminate defects, followed by the application of UIT at the weld toe. 

The technical and commercial value of this approach is significant. By extending the fatigue life of welded structures, operators can delay or avoid costly structural replacements, reduce the frequency of maintenance interventions, and enhance the overall safety and reliability of their assets.