En 13445-3 Apr 2026

is the European standard that specifies requirements for the design of unfired pressure vessels . It provides formulas, calculation methods, and rules to ensure the structural integrity of pressure-bearing components under various loading conditions. Key Content & Sections

The latest major revision is EN 13445-3:2021 , with an active amendment A1:2025 . EN 13445-3

Primarily covers vessels made of steels according to EN 13445-2 . is the European standard that specifies requirements for

Design of isolated or multiple openings and their reinforcement requirements. Primarily covers vessels made of steels according to

📌 This part of the standard is used for design before putting a vessel into service, though it can be adapted for in-service analysis. If you'd like to dive deeper, I can look into:

Annex B provides the "Direct Route" for design using Finite Element Method (FEM) analysis for complex geometries. Scope and Application

Simplified (Clause 17) and detailed (Clause 18) methods for evaluating fatigue life.