Draft Details

CSA Scope

[ Add the following]

The requirements of the IEC 60079 series of Standards cover protection with respect to explosion hazard only. The CSA C22.2 No. 60079 series of Standards (based on the adoption of corresponding IEC Standards) is to be used in conjunction with other applicable Standards containing the appropriate electrical safety requirements for general-use equipment.

IEC Scope

This part of IEC 60079 provides guidance for the application of electrical resistance trace heating systems in areas where explosive atmospheres can be present, with the exclusion of  those classified as requiring Equipment Protection Level (EPL) Ga or Da (traditional relationship 
to Zone 0 and Zone 20 respectively). This document also provides guidance for explosive atmospheres incorporating the Division method of area classification that can be applied by some users of this document. 

NOTE Information on the Division method is given in NFPA 70® [1] and CSA C22.1 [2]. 

This document provides recommendations for the design, installation, maintenance and repair of trace heating systems including associated control and monitoring equipment. It does not cover devices that operate by induction heating, skin effect heating or direct pipeline heating, nor those intended for stress relieving.