Posts by: Fernando

The future of CEN harmonized Pressure Equipment standards – The role of EPERC, the European Pressure Equipment Research Council

What is the procedure to prepare harmonized standards for pressure equipment? As all the “New Approach” directives, the Pressure Equipment Directive (PED) cannot be applied without standards that are capable to translate into detailed instructions the Essential Safety Requirements contained in the Directive. In fact, the Directive itself doesn’t contain…

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What is the tube temperature to be considered in the calculation of shell and tube heat exchangers?

This question comes out many times in the work of heat exchanger designers. The answer is needed whichever is the pressure vessel standard to be used. The normal situation in which the engineer charged of the mechanical design of shell and tube heat exchangers finds himself is the following: a…

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Why do we need a European Standard on Shell and Tube Heat Exchangers?

When I started working for an important Italian Pressure Vessel and Heat Exchangers manufacturer (around 50 years ago) I only knew that a shell and tube heat exchanger was some kind of metallic container, generally filled with tubes, with two fluids coming into it: a cold fluid, which should come…

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New working method for the drafting, approval and publication of the amendments to EN 13445 (unfired pressure vessels) and EN 13480 (piping)

It is now more than 30 years that I have the honour of being the president (sorry! I meant the coordinator) of Working Group 53 (Design and Calculation) of CEN Technical Committee 54, which is in charge of the most important of all the harmonized standards of the PED Directive:…

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Requirements of Clause 7-Annex I of Directive 2014/68/EU

This clause contains specific requirements for pressure equipment that have been considered on all harmonized standards of Directive 2014/68/EU, generally known as the Pressure Equipment Directive. It comes from a compromise solution found during the preparation of the first Pressure Equipment Directive 97/23/EC, of which the subject directive 2014/68/EU is…

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