Pressure vessels

Competent partner when it comes to high pressures
Only regular monitoring is able to guarantee safe operation of pressure vessels. TÜV Rheinland Group alone ensures the safety of more than 175,000 of these systems. TÜV experts here make use of extremely modern computer-supported calculating methods. TÜV Rheinland Group is just as much a competent partner for checking simple compressed air vessels as for taking care of complex equipment in chemical plants and fuel cells.

Pressure Equipment Directive 97/23/EC

The Pressure Equipment Directive (PED) 97/23/EC applies to the design, manufacturing and conformity evaluation process of Pressure Equipment, as well as Pressure Equipment Assemblies. The maximum allowable design pressure must be greater than 0.5 bar.

Covered under the general term "Pressure Equipment" are pressure vessels, steam boilers, exchangers, tubing (pipe) and pressure accessories, as well as devices under pressure. Also included are all parts and products that are attached to pressurized parts (i.e., flanges, nozzles, lifting parts, fast-connectors, etc).

The PED became applicable on November 29, 1999. Since then, each European member state has had the responsibility to implement and adopt the PED into national law. This transition was completed on May 29, 2002. Until May 29, 2002, manufacturers and/or final users of pressure equipment could decide if the product should have met the PED requirements or the national code of the country in which the product will be placed.

Products covered include:

· Pressure Vessels
· Heat Exchangers
· Pressure Gas Cylinders
· Steam Boilers
· Pipeline Equipment
· Storage Tanks
· Pressure Relief Devices
· Valves, Regulators, etc.
· and more

Directives & Standards:

· PED Harmonized Standards

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Pressure Equipment Certification
When pressure equipment meets the requirements imposed in the Pressure Equipment Directive (97/23/EC), the CE Mark shall be affixed to such equipment. The "way" to the CE Marking is outlined in Article 10 and Annex III of the directive. This is called the Conformity Assessment.

The flowchart shows possible activities involved in the conformity assessment procedure.

1. Facility Certification

2. Design Analysis and Approval

3. Welding Procedure Approval *

EN 15614 Welding procedure approval

Brazing Procedure Approval*
EN 13134 Approval of brazing procedure

4. Welding Operator Certification *

EN 287 Approval of welder
EN 473 NDT personnel
- centri d’esame TÜV Anlagentechnik con Notifica n° - 0035 –

EN ISO 3834-1 Quality requirements for welding. Welding fusion of metallic materials
EN 719 Tasks of weld coordinator

Brazing Operator Certification*
EN 13133 Brazer approval

5. Material Testing and Certification

6. Final Equipment Inspection & Certification

*note: depending on product type and category

Further Topics

ASME Code Transportable pressure equipment directive (99/36/CE) First plant tests of pressure equipment and facilities and periodical requalification according to the Legislative Decree n. 93/2000 n.93 and DM 1°/12/04, n.329

 

 

 

Pressure Equipment and Materials Technology

Steam Boilers Pipelines Pressure vessels Material enginnering and welding engineering