Hazards arising from the handling of flammable gases, vapours and dusts are caused by uniform chemical and physical processes. For this reason, the protection against these hazards must be carried out in a uniform manner. Nearly universal uniform requirements have now been formulated by the International Electrotechnical Commission IEC, which are adopted by the European Standardisation Committee CENELEC. Manufacturers and operators are required to adhere to these, and where there are legal rules, they are monitored by Notified Bodies and the authorities.
