This FPSO had endured many years on station in the vicinity of the Shetland   Islands when fatigue hot-spots were located in cargo oil tanks. LETS Global was contracted to strengthen the fatigue hot-spots against further structural fatigue.

 

FPSO life extension ultrasonic peening in cargo tank

FPSO life extension: ultrasonic peening in cargo tank

 

After magnetic particle inspection the LETS Global Ultrasonic Peening Procedure was applied to all located fatigue hot-spots, extending the service life considerably. LETS personnel gained access to concerned areas with rope access.

Ultrasonic peening of bottom transverse bracket in a FPSO cargo tank

Ultrasonic peening of bottom transverse bracket in a FPSO cargo tank

In total LETS personnel made four separate trips to the client’s offshore installation in order to execute the project.

Ultrasonic peening from temporary platform

Ultrasonic peening from temporary platform