This European Standard specifies basic methodology used in achieving safety of equipment for intended use in potentially explosive atmospheres. The provisions specified in this European Standard are intended for the designer. It also specifies a strategy for standard makers.This European Standard specifies the procedure and information required to allow ignition risk assessment to be carried out for the design of equipment or component. This European Standard provides advice for a decision to be made for the categorisation of equipment but does not provide means to prove the conformity of equipment categories.In this procedure the following information is t