New editions of IEC/IEEE 60079-30-1 and -2 for Explosive atmospheres published

IEC/IEEE 60079-30-1 en -2 are now published. These first editions of IEC/IEEE 60079-30-1 and -2 cancels and replaces the first editions of IEC 60079-30-1 and 2 published in 2007 and constitutes technical revisions. 

IEC/IEEE 60079-30-1:2015(E) specifies general and testing requirements for electrical resistance trace heaters for application in explosive atmospheres with the exclusion of those for EPL Ga and Da. This standard covers trace heaters that comprise either factory or field (work-site) assembled units, and which may be series trace heaters, parallel trace heaters, trace heater pads, or trace heater panels that have been assembled and/or terminated in accordance with the manufacturer's instructions. This standard also includes requirements for termination assemblies and control methods used with trace heating systems.

IEC/IEEE 60079-30-2:2015(E) provides guidance for the application of electrical resistance trace heating systems in areas where explosive atmospheres may be present, with the exclusion of those classified as requiring EPL Ga/Da (traditional relationship to Zone 0 and Zone 20 respectively). This standard also provides guidance for explosive atmospheres incorporating the Division method of area classification that may be applied by some users of this standard. It provides recommendations for the design, installation, maintenance and repair of trace heating systems including associated control and monitoring equipment.

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