About us
About Lets-Global
LETS Global is an engineering and consulting company specializing in the life extension of welded structures and components subjected to fatigue loading. With a strong focus on offshore installations, FPSOs, and heavy industrial assets, we deliver advanced solutions that improve structural integrity, reduce fatigue risk, and extend operational life.
Our core expertise lies in the application of Ultrasonic Impact Treatment (UIT), a proven technology designed to enhance fatigue performance in welded structures. By introducing beneficial compressive stresses at critical weld areas, UIT significantly delays crack initiation and slows crack propagation, extending the fatigue life of assets—often by up to four times.
The treatment also forms a smooth weld toe groove that reduces local stress concentrations and improves fatigue performance. Combined with surface hardening at the weld toe, this delays crack initiation to much later in the structure’s service life.
In addition, the lower stress concentration slows the redistribution of compressive residual stresses, helping protect the weld root from high tensile stresses and reducing the risk of root fatigue cracking.
Since 2005, LETS Global has been a pioneer in applying ultrasonic treatment offshore. We have successfully delivered projects across the North Sea, Brazil, and other key offshore regions, supporting operators in extending the service life of their assets while maintaining production continuity.
In today’s offshore environment, many installations are reaching or exceeding their original design life. Building new assets is costly, time-consuming, and environmentally demanding. Life extension has therefore become the most practical, economical, and sustainable solution.
Compared to new builds, life extension offers:
- Lower capital expenditure
- Reduced environmental impact
- Faster implementation
- Minimal operational disruption
However, extending the life of offshore structures requires a deep understanding of fatigue behavior. Over time, cyclic loading causes cracks to initiate and grow, especially in welded joints. If not addressed, these cracks can lead to increased maintenance costs, unplanned downtime, and safety risks.
LETS Global supports operators through a structured approach:
- Structural integrity assessment to identify fatigue-critical areas
- Advanced stress and fatigue analysis
- Targeted application of Ultrasonic Impact Treatment
- Offshore execution without major shutdowns
Our proprietary ultrasonic technology, combined with engineering expertise, allows us to deliver precise, efficient, and non-invasive treatments—even in hard-to-access areas.
Ultrasonic Impact Treatment is particularly effective because it:
- Reduces residual tensile stress
- Introduces beneficial compressive stress
- Improves weld geometry
- Enhances resistance to fatigue cracking
This makes UIT one of the most effective fatigue mitigation techniques available today.
LETS Global is recognized for its offshore capability and technical leadership. Our teams are trained to operate in demanding environments, ensuring safe and compliant execution of all interventions.
As offshore assets continue to age, operators face increasing pressure to reduce costs, meet regulatory requirements, and improve sustainability performance. Life extension through advanced fatigue mitigation provides a clear path forward.
By extending asset life instead of replacing structures, operators can:
- Reduce carbon footprint
- Minimize material usage
- Improve return on investment
- Maintain production efficiency
LETS Global combines engineering excellence with practical offshore execution to deliver measurable results. We help clients transform fatigue risk into long-term operational value.