EN 60079-30-2:2017

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Application considerations
5 Thermal insulation
6 System design
7 Control and monitoring
8 Recommendations for installation
9 Maintenance
10 Repairs
Annex A (informative) - Example of design data record
Annex B (informative) - Checklist for installation requirements
Annex C (informative) - Example of trace heater
        commissioning record
Annex D (informative) - Example of maintenance schedule
        and log record
Annex E (informative) - Pipe heat loss considerations - Heat
        loss formula and example calculations
Annex F (informative) - Vessel heat loss considerations
Annex G (informative) - Heat up and cool down considerations
Annex H (informative) - Method to determine equivalent
        thicknesses of insulating cements
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

This part of IEC 60079 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). It 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.