EVS-EN IEC 60079-31:2024

IEC 60079-31 applies to equipment protected by enclosure and surface temperature limitation for use in explosive dust atmospheres. It specifies requirements for the design, construction and testing of Ex Equipment and Ex Components. IEC 60079-31 supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this document conflicts with a requirement of IEC 60079-0, the requirement of this document takes precedence.

IEC 60079-31 does not apply to dusts of explosives, which do not require atmospheric oxygen for combustion, or to pyrophoric substances. It does not apply to Ex Equipment or Ex Components intended for use in underground parts of mines as well as those parts of surface installations of such mines endangered by firedamp or combustible dust. It also does not take account of any risk due to an emission of flammable or toxic gas from the dust.

The text of IEC 60079-31:2022 has been approved in Europe as EN IEC 60079-31:2024 without any changes.