A focused 5-day course on API 579/ASME FFS-1 corrosion assessment with a clear emphasis on Level 3 FEA in Abaqus. Build from Level 1–2 methods to advanced workflows: modelling local thin areas and complex geometries, applying nonlinear material behaviour and realistic loads, stress extraction/linearization, RSF/MAWP evaluation, and mesh/sensitivity checks. Finish with defensible, code-compliant decisions on continued operation or repair.