DANSK DSF/FPREN IEC 60079-31 PDF

This part of IEC 60079 is applicable to equipment protected by enclosure and surface temperature limitation for use in ex plosiv e dust atmospheres. It specifies requirements for design, construction and testing of Ex Equipment and Ex Components. This standard supplements and modifies the general requirements of IEC 60079-0. W here a requirem ent of this standard conflicts with a requirem ent of IEC 60079-0, the requirement of this standard takes precedence. This standard does not apply to dusts of explosiv es, which do not require atmospheric oxygen for combustion, or to pyrophoric substances. This standard 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 and/or combustible dust. This standard does not take account of any risk due to an emission of flammable or toxic gas from the dust.