Article 3
Prevention of and protection against explosions With a view to preventing, within the meaning of Article 6(2) of Directive 89/391/EEC, and providing protection against explosions, the employer shall take technical and/or organisational measures appropriate to the nature of the operation, in order of priority and in accordance with the following basic principles: - the prevention of the formation of explosive atmospheres, or where the nature of the activity does not allow that, - the avoidance of the ignition of explosive atmospheres, and - the mitigation of the detrimental effects of an explosion so as to ensure the health and safety of workers. These measures shall where necessary be combined and/or supplemented with measures against the propagation of explosions and shall be reviewed regularly and, in any event, whenever significant changes occur.