TC 31

Equipment for explosive atmospheres

 

Detail

Committee
Working Groups
Project Leader

Current

Status

Frcst Pub

Date

Stability

Date

TC 31MT 60079-31 Donald AnkelePPUB2013-112020

History

Stage
Document
Downloads
Decision Date
Target Date
AMW
31/909/RR PDF file 19 kB
2010-11-262010-11
1CD
31/910A/CD PDF file 74 kB
2010-11-262010-11
CDM
31/923/CC Word file 253 kB
PDF file 318 kB
2011-03-182011-04
ACDV
31/923A/CC Word file 260 kB
PDF file 329 kB
2011-12-022011-05
CCDV
31/985/CDV PDF file 446 kB
PDF file 457 kB
2012-03-162012-01
AFDIS
31/1017/RVC Word file 196 kB
PDF file 236 kB
2012-09-072012-11
AFDIS
31/1017A/RVC Word file 199 kB
PDF file 252 kB
2012-09-072012-11
DECFDIS
2013-07-082013-11
RFDIS
2013-07-152013-07
CFDIS
31/1079/FDIS

2013-08-162013-10
APUB
31/1094/RVD PDF file 152 kB
2013-10-212013-10
BPUB
2013-10-222013-10
PPUB
2013-11-272013-11
  

Abstract

IEC 60079-31:2013 is applicable to electrical equipment protected by enclosure and surface temperature limitation for use in explosive dust atmospheres. It specifies requirements for design, construction and testing of electrical equipment and Ex Components. This standard supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence. This standard does not apply to dusts of explosives, which do not require atmospheric oxygen for combustion, or to pyrophoric substances. This standard does not apply to electrical 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. Consideration of additional protective measures is required where the application of electrical equipment is in atmospheres, which can contain combustible dust as well as explosive gas, whether simultaneously or separately. Where the electrical equipment has to meet other environmental conditions, for example, protection against ingress of water and resistance to corrosion, additional measures can be necessary. The measures used should not adversely affect the integrity of the enclosure. This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. The major technical changes include:
- The marked maximum surface temperature shall be measured on the external surfaces of the enclosure and the surfaces of the internal components for equipment with types of protection "ta";
- Additional protection for arcing and sparking parts for "ta";
- Test for internal enclosure for level "ta" added. Keywords: explosive dust atmospheres

This publication is to be read in conjunction with IEC 60079-0:2011.

Project

IEC 60079-31:2013 ED2

Explosive atmospheres - Part 31: Equipment dust ignition protection by enclosure "t"

 

 

Associated Documents:

31/1231/RM

PDF file 147 kB
31/1223A/INF

PDF file 160 kB
31/1209/DC

PDF file 98 kB