As for the previous one, the aim of the directive is to facilitate the free trading of goods within the European Union, to protect companies and users harmonizing laws of member states. In detail, the european directive refers to equipment and protection systems intended for specific use in potentially explosive atmospheres. Some definitions:
- equipment = “machines, apparatus, fixed or mobile devices, control components and instrumentation thereof and detection or prevention systems which, separately or jointly, are intended for the generation, transfer, storage, measurement, control and conversion of energy and/or the processing of material and which are capable of causing an explosion through their own potential sources of ignition” (such as electrical appliances, reactors, reducers, internal combustion engines…);
- protective systems = “devices other than components of equipment which are intended to halt incipient explosions immediately and/or to limit the effective range of an explosion and which are separately made available on the market for use as autonomous systems”;
- potentially explosive atmosphere = “atmosphere which could become explosive due to local and operational conditions”
Furthermore, the regulation is also effective with regards to all control, regulation and safety equipment that are not used in potentially explosive atmospheres, but which are necessary for the functioning of explosion safety supplies (such as breakage panel or non–return valve).