What is a pressure vessel
Pressure vessel, simple
Simple pressure vessels are series-produced vessels whose relative internal pressure (i.e. operating pressure) is more than 0.5 bar, which are intended to hold air or nitrogen and which are not exposed to the action of flames.
The manufacture and placing on the market of simple pressure vessels are regulated in the regulation on placing simple pressure vessels on the market (6th GPSGV) and in Directive 87/404 / EEC on simple pressure vessels. In most cases, the pressure vessels supplied with air compressors are simple pressure vessels according to Directive 87/404 / EEC. According to the Ordinance on Industrial Safety and Health, these belong to the systems requiring monitoring if their pressure content product PS • V is above 50 bar • liters. Test obligations and test requirements are described under the heading pressure vessels.
Directive 87/404 / EEC does not include - d. H. The simple pressure vessels do not include:
- Containers that are specially designed for use in nuclear technology and where damage can result in the release of radioactive substances
- Containers specially designed for equipping or propelling watercraft or aircraft
- Fire extinguisher.
Further prerequisites for a pressure vessel to be regarded as a simple pressure vessel are:
- The pressure-bearing parts and connections of the container are made either from unalloyed quality steel, from unalloyed aluminum or from non-hardenable aluminum alloys.
- The container is formed either by a cylindrical part with a round cross-section which is closed by outwardly curved and / or flat bottoms, the axis of rotation of these bottoms corresponding to that of the cylindrical part, or by two curved bottoms with the same axis of rotation.
- The maximum operating pressure of the container is 30 bar or less. The product of this pressure and the capacity of the tank (PS • V) is a maximum of 10,000 bar • liters.
- The lowest operating temperature is not below minus 50 ° C. The maximum operating temperature for tanks made of steel does not exceed 300 ° C, for tanks made of aluminum or aluminum alloy it does not exceed 100 ° C.
According to the 6th GPSGV and Directive 87/404 / EEC, simple pressure vessels may only be placed on the market if they meet the following requirements:
a) If the pressure content product PS • V is not more than 50 bar • liters, the container must be manufactured in accordance with the national regulations applicable in the respective member state or generally recognized rules of technology. In addition, a label in accordance with Annex II No. 1 of Directive 87/404 / EEC must be attached to the container. These pressure vessels are not allowed to carry a CE mark.
b) If the pressure content product PS • V is more than 50 bar • liter to 10,000 bar • liter, the container must be manufactured in accordance with the safety requirements of Annex I of Directive 87/404 / EEC. In addition, the manufacturer must employ an approved monitoring body and subject the container to the relevant certification procedure. An identification label in accordance with Annex II No. 1 of Directive 87/404 / EEC as well as the CE mark with the year and the identification number of the approved monitoring body must be affixed to the container. The container must be accompanied by an operating manual (Annex II No. 2 of the above-mentioned guideline).
The GS mark may not be affixed to simple pressure vessels with a pressure content product over 200 bar • liters.
- 14th Ordinance on the Equipment and Product Safety Act (Pressure Equipment Ordinance - 14th GPSGV)
- 6. Ordinance on the Equipment and Product Safety Act (Ordinance on the placing on the market of simple pressure vessels - 6th GPSGV)
- Directive 2001/95 / EC of the European Parliament and of the Council of December 3, 2001 on general product safety
- Council Directive 87/404 / EEC of June 25, 1987 on the approximation of the laws of the member states for simple pressure vessels
- Directive 97/23 / EC of the European Parliament and of the Council of May 29, 1997 on the approximation of the laws of the member states relating to pressure equipment
- TRBS 2141 Hazards from steam and pressure - General requirements
- TRBS 2141 Part 1 Failure of the pressure-bearing wall due to deviations from the permissible operating parameters
- Printing devices online
- Pressure Equipment Directive (PED): Overview - Online information from the European Commission
- Simple Pressure Vessels Directive (SPVD): Overview - European Commission online information
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