Changes in the European pressure vessel design standard EN13445/AD2000 (shared)

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This post was last edited by king263 on 2018-8-6 08:59. Note: PED 97/23/EU has been replaced by the new PED 2014/68/EU； EN13445 has become an important design and manufacturing standard in the European pressure vessel market. What’s changed? Due to the harmonization of European standards and regulations, some significant changes took place in 1999. In accordance with the European Pressure Equipment Directive PED 97/23/EU, new European standards and regulations were enacted as **law at the end of May 1999. After the transition period that ended on May 29, 2002, European standards EN 13445-3 and EN 1591 replaced the calculations based on the previous DIN standards and AD-Merkblaetter. Do you have anything to do? Regulations that comply with PED can be used. The German Association of Pressure Vessels issued a regulation compliant with the Pressure Equipment Directive PED 97/23/EC, known as AD 2000. Generally, the European harmonized standard DIN EN 13445 can be applied to non-combustible pressure vessels. The final version of this standard has been in effect since May 2002, and if your customers are spread across Europe, it is an advantage to design in accordance with this standard. LV suggestion: These two regulations, DIN EN 13445 and AD 2000, are independent concepts that differ only slightly from each other. For manufacturers designed in accordance with DIN EN 13445, it facilitates the supply of pressure vessels or components of pressure vessels on the European market. The downside is that, due to higher quality standards, such adjustments may lead to higher production costs. Designing pressure vessels according to AD 2000 enables manufacturers to offer them at more competitive prices. If low-pressure module AUZY is used to calculate nozzles in pressure vessel openings and bulged cylindrical shells, the manifolds and pipes can be calculated according to DIN EN 12952-3. Part of EN 13445 for calculating flanges is provided by LV module package 1591, which performs the calculations based on DIN EN 1591. This standard replaces **Standard DIN 2505. The EN 1591 and EN 13445 standards cover several possibilities for flange calculations. EN 1591 covers the field of strength and leakage calculations for flanges and flange connections, and is more detailed than AD-Merkblaetter. According to EN 13445-3, Chapter 11, the procedure for performing flange calculations is very similar to that of ASME Div. Eight. Compared to EN 1591, this calculation is more conservative. The HPR module determines the allowable support length of pipes with or without additional loads (Merkblatt HP100R) based on the design standards for metal piping from AD 2000 Merkblatt HP 100 R. Pressure vessels: The AD-Merkblaetter and AD 2000 packages provide all the design calculations for the AD-B and AD-S sections. The additional module PMAX calculates the test pressure for the equipment and structures based on the different test pressures of the components (housing, head, nozzle).