This document specifies the explosion protection requirements for equipment in explosive hazardous areas, as well as the common explosion protection safety technical requirements in design, manufacturing, inspection, sales, area classification, selection, installation, use, repair and maintenance of equipment and protective systems. This document applies to the explosion protection of equipment in hazardous areas, as well as equipment and protective systems for hazardous areas. It can be used as the basic requirements for explosion protection of equipment in hazardous areas, the basic requirements for explosion protection safety of equipment and protective systems in hazardous areas, as well as the technical basis for design, manufacturing, inspection, sales, area classification, selection, installation, use, repair and maintenance of equipment and protective systems in hazardous areas. Safety devices, control devices and regulating devices intended for use outside hazardous areas but required for or contributing to the explosion protection safety function of equipment and protective systems in hazardous areas, are also included in the scope of this document.