Rules for determining required wall thicknesses for cylindrical, spherical, and conical shells.
Simplified (Clause 17) and detailed (Clause 18) methods for evaluating fatigue life. EN 13445-3
The latest major revision is EN 13445-3:2021 , with an active amendment A1:2025 . EN 13445-3
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 EN 13445-3
Generally uses lower safety factors than ASME VIII, leading to thinner walls for similar pressures.