This paper focuses on the development of a simplified analytical scheme for the elastic-plastic Fracture
Mechanics Assessment of large nozzle corners. Within that frame, following the specific numerical effort
performed for the definition of a Stress Intensity Factor compendium, complementary elastic-plastic
developments are proposed here for the consideration of the thermal shock loading in the elasticplastic
domain: this type of loading is a major loading for massive structures such as nozzle corners of
large components. Thus, an important numerical was performed in order to extend the applicability
domain of existing analytical schemes to those complex geometries. The final formulation is a simple
one, applicable to a large variety of materials and geometrical configurations as long as the structure is
large and the defect remains small in comparison to the internal radius of the nozzle.