ČSN EN IEC 60079-17 ed. 5

This part of IEC 60079 applies to users and covers only those factors directly related to the inspection and maintenance of electrical installations specifically designed for hazardous areas, where the hazard is caused by explosive atmospheres. It does not include other fundamental installation and inspection requirements for electrical installations, the verification of electrical equipment, protection or ventilation of rooms, gas detection systems and the repair, overhaul and reclamation of explosion protected equipment (see IEC 60079-19). While this document does not include inspection of safety devices such as used in ventilated rooms (see IEC 60079-13), it does include the requirements for inspection and maintenance of individual items of equipment that will be part of such systems, for example motors or sensors. This document supplements the requirements for inspection and testing in non-hazardous areas in IEC 60364-6. This document is intended to be applied where there is a risk due to the potential presence of explosive gas or dust mixtures with air or combustible dust layers under normal atmospheric conditions. It does not apply to underground mining areas, dusts of explosives and pyrophoric substances.