ATEX Directive 94-9-EC UNECE WP.6 Break-out session on .ppt
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1、1,ATEX Directive 94/9/EC UNECE WP.6 Break-out session on equipment for explosive atmospheres Geneva, 6 November 2007 Fabrizio Sacchetti European Commission Directorate-General for Enterprise and Industry,2,ATEX Directive 94/9/EC of the European Parliament and the Council of 23 March 1994 on the appr
2、oximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres,3,Scope of Directive 94/9/EC Equipment Protective systemswhen intended for use in a potentially explosive atmosphere and Devices according to Art. 1(2) Compone
3、nts,Must comply when placed on the market or put into service,4,Potentially Explosive Atmosphere flammable substance (gas, vapour, mist or dust) mixed with air under atmospheric conditions (*) after ignition, combustion spreads to entire mixture(*) atmospheric conditions according to standards:T = -
4、20 C to +40 C, p = 0.8 bar to 1.1 bar, dT/dt 0,5 K/min, RH = 5% to 85 % , O2 = 20.9 0.2 Vol %,5,Equipment Intended for use in a potentially explosive atmosphere Must have its own potential source of ignition Protective SystemIntended to halt an incipient explosion and/or to limit the effective range
5、 of an explosion When placed on the market separately as autonomous system: Protective system in the sense of the Directive When integrated into equipment: To be assessed with the complete equipment (no own CE-mark),6,Device according to Art. 1(2) Safety-, controlling- or regulating devices which ar
6、e: Situated outside the potentially explosive atmosphere Essential to the safe functioning of equipment or protective systems with respect to the risk of explosion Component Items essential to the safe functioning of equipment or protective systems but with no autonomous function Placed on the marke
7、t with the explicit intention of integration into ATEX equipment or protective systems,7,Exclusions Medical devices intended for use in medical environment Equipment for use in the presence of explosives or unstable chemical substances Personal Protective Equipment (PPE) Seagoing vessels, mobile off
8、shore units Means of transport except vehicles intended for use in an explosive atmosphere Equipment for military use covered by Art. 223 (1b) of the Treaty,8,Installations and Assemblies Directive does not regulate “installations” or “plants”, which are subject to workplace directives (as the ATEX
9、“user” Directive 1999/92/EC) or national legislation Not always a clear line between installation and “assembly” The plant will usually be an installation if the end user or an installer e.g.: purchases parts from different manufacturers to install them under his responsibility carries out a whole s
10、eries of different processes, requiring the integration of ATEX certified equipment installed according to a unique layout on site commissions the installation off-site, which may certainly not be a production run, under his direct responsibility, or indirectly through a contractor,9,Classification
11、of Equipment: Groups and Categories Group I: intended for use in the underground parts of mines, likely to become endangered by firedamp and/or combustible dust Group II: intended for use in other places, likely to become endangered by explosive atmospheresThese groups are subdivided into categories
12、. The way in which this categorisation has been developed highlights one of the main distinctions of groups I and II,10,Equipment - Group I Category M1: for use in mines endangered by firedamp and/or combustible dust Category M2: for use in mines likely to be endangered by firedamp and/or combustibl
13、e dust Equipment - Group II Category 1: for use in areas in which explosive atmospheres are present continuously, for long periods or frequently Category 2: for use in areas in which explosive atmospheres are likely to occur Category 3: for use in areas in which explosive atmospheres are unlikely or
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