During service, pipelines accumulate defects from corrosion, fatigue and mechanical damage — lowering the maximum safe operating pressure and reliability. Industry experience confirms inspect–assess–repair as the effective integrity workflow.
Using internal or external inspection, identify defects and damage in the coating and wall. Apply elasto-plastic, fracture and damage mechanics models to estimate residual strength on the defective pipe, and combine with defect-growth kinematics to predict remaining life.
Pipe repair and reinforcement is the critical lever for integrity and service-life extension. Composite repair — using carbon-fiber, aramid or S-glass cloth wrapped over the defect with high-strength epoxy — restores the design pressure capacity in service, without welding or shutdown. It has become the modern alternative to traditional welding and clamp methods.