Scope of application

Article 1

Area of ​​application

1. This Directive shall apply to simple pressure vessels ('vessels') produced in series with the following characteristics:
a) the containers shall be welded, intended to be subjected to a relative internal pressure exceeding 0,5 bar and to contain air or nitrogen, and shall not be intended to be subjected to flame;
(b) Parts and assemblies contributing to the strength of the pressure vessel shall be manufactured either from unalloyed quality steel, from unalloyed aluminium or from unhardened aluminium alloys;
c) the container shall consist of the following elements:
(i) either by a cylindrical part with a circular cross-section, closed by curved ends with their concavity facing outwards or by flat ends with the same axis of revolution as the cylindrical part,
ii) or by two curved bottoms that have the same axis of revolution;
(d) the maximum service pressure of the vessel shall be less than or equal to 30 bar and the product of this pressure and the capacity of the vessel (PS × V) shall not exceed 10 000 bar.L;
(e) the minimum service temperature shall not be less than – 50 °C nor the maximum temperature more than 300 °C for steel containers or 100 °C for aluminium or aluminium alloy containers.
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