TC 31
IEC Technical Committee TC31 Equipment for explosive atmospheres
The committee concerned with development of the standards on equipment for explosive atmospheres at IEC is Technical Committee TC 31 Equipment for explosive atmospheres. The Secretariat for this committee is held by the UK. Jim Munro (Managing Director of Jim Munro International Compliance Pty Ltd) is Chairman of the committee.
The scope of TC 31 is to prepare and maintain international standards relating to equipment for use where there is a hazard due to the possible presence of explosive atmospheres of gases, vapours, mists or combustible dusts.
TC 31 has 3 sub-committees, 7 working groups, 2 joint working groups, one project team, 12 maintenance teams and 2 ad-hoc working groups. It has 34 participating countries, called P-members, and 12 observer countries. The subcommittees also have working groups, project teams and maintenance teams.
It is responsible for over 40 standards associated with hazardous areas. Below is information about standards and related documents (such as corrigenda) that have been published over the past 12 months. Also shown in the second table are documents nearing completion. These include final draft international standards (FDIS) and committee drafts for voting (CDV).
Standards and Related Documents Published over the Past 12 Months
to 5 July 2011
| Number | Edition | Date | Title |
| IEC 60079-0
Also available in redline version |
Ed 6 | 2011-6 | Explosive atmospheres – Part 0: Equipment – General requirements |
| IEC 60079-11 | Ed 6 | 2011-6 | Explosive atmospheres – Part 11: Equipment protection by intrinsic safety “i” |
| ISO/IEC 80079-34 | Ed 1 | 2011-4 | Explosive atmospheres – Part 34: Application of quality systems for equipment manufacture |
| IEC 60079-35-1
Superseding IEC 62013-1 Ed2 |
Ed 1 | 2011-5 | Explosive atmospheres – Part 35-1: Caplights for use in mines susceptible to firedamp – General requirements – Construction and testing in relation to the risk of explosion |
| IEC 60079-0 | Ed 5
Corr 1 |
2010-12 | Explosive atmospheres – Part 0: Equipment – General requirements |
| IEC 60079-19 | 3 | 2010-11 | Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation |
| IEC 60079-13 | 1 | 2010-10 | Explosive atmospheres – Part 13: Equipment – protected by pressurized rooms “p” |
| IEC 60079-29-4 | Ed 1
Corr 1 |
2010-8 | Explosive atmospheres – Part 29-4: Gas Detectors – Performance requirements of open path detectors for flammable gases |
Standards Nearing Completion (at FDIS or CDV stage)
to 5 July 2011
| Document Number | Date | Title |
| 31/929/CDV | 2011-4-22 | IEC 60079-1 Ed. 7.0: Explosive atmospheres – Part 1: Equipment protection by flameproof enclosures |
| 31/927/CDV | 2011-04-15 | IEC 60079-33 Ed. 1.0: Explosive atmospheres – Part 33: Equipment protection by special protection ‘s’ |