Glossary > PED 2014/68/EU
The PED (Pressure Equipment Directive, Directive 2014/68/EU) sets forth the essential safety requirements for the design, manufacture, and conformity assessment of pressure equipment and assemblies in the EU. It applies to vessels, piping, steam generators, fittings, and similar equipment subjected to a maximum allowable pressure exceeding 0.5 bar, and classifies the requirements according to risk categories.
Publisher: European Union
Legal basis: Directive 2014/68/EU
The directive applies to manufacturers, importers, and authorized representatives who place pressure equipment or assemblies of pressure equipment on the market in the EU—ranging from individual pressure vessels to complete piping systems and entire plants in industrial plant construction. It is particularly relevant for companies that design, manufacture, or install equipment in the process industry, power plant construction, or the chemical industry.
Risk Categorization: Classification into Categories I through IV based on pressure, volume/nominal diameter, and fluid group
Design requirements: Calculation and design in accordance with recognized engineering practices, such as harmonized standards
Material requirements: suitable, tested materials with corresponding material certificates
Manufacturing supervision: In-house production control or involvement of a Notified Body, depending on the category
Pressure testing: Mandatory testing prior to commissioning, typically as a hydrostatic pressure test
CE marking: Marking indicating the identification number of the Notified Body starting with Category II
The PED specifically regulates the safety of pressure-retaining equipment—vessels, piping, steam generators, and similar components. The EU Machinery Directive, on the other hand, generally regulates the safety of machinery, regardless of whether it contains pressure-retaining components. The two sets of regulations are not mutually exclusive: If a machine contains pressure-retaining components—such as an integrated steam generator—it must comply with both the PED requirements for that component and the Machinery Directive requirements for the machine as a whole. In such cases, a careful distinction must be made regarding which requirements apply to which part of the system.
Pressure equipment may not be placed on the market in the EU without a CE marking that complies with the PED. Since pressure equipment poses a significant risk of damage in the event of a malfunction, any identified defects will lead market surveillance authorities to issue operating bans; in the event of damage, manufacturers and operators also face significant civil and criminal consequences. Furthermore, missing or incomplete pressure test records regularly delay the commissioning of entire system components.
Yes, as an EU directive, implemented in Germany by the 14th ProdSV.
Categories I through IV, classified by pressure, volume/nominal diameter, and fluid group.
The PED specifically regulates pressure equipment, while the Machinery Regulation governs machinery in general; both may apply concurrently to pressure-bearing machine components.
Equipment below certain pressure/volume limits, as well as simple pressure vessels, in accordance with separate Directive 2014/29/EU.
The greatest operational effort lies in the comprehensive documentation of pressure tests, including the tester, measured values, and timestamps—especially for complex systems with many pressure-bearing components. Connected worker platforms such as weasl automatically log these tests and provide audit-ready acceptance reports for TÜV and clients.
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