13445-3 — En

for certain components (like flanges or tubesheets). Comparison between EN 13445-3 and ASME Section VIII . Annex B details for FEA-based design. EN 13445 "Unfired pressure vessels" - UNM

Simplified (Clause 17) and detailed (Clause 18) methods for evaluating fatigue life. EN 13445-3

Annex B provides the "Direct Route" for design using Finite Element Method (FEM) analysis for complex geometries. Scope and Application for certain components (like flanges or tubesheets)

Primarily covers vessels made of steels according to EN 13445-2 . EN 13445-3