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IEC 60079-31:2013

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Explosive atmospheres - Part 31: Equipment dust ignition protection by enclosure "t"
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

17-01-2022

Language(s)

English - French, Spanish, Castilian

Published date

27-11-2013

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Construction
6 Verification and tests
7 Marking
Bibliography

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
The contents of the Interpretation Sheet 1 of February 2022 have been included in this copy.
This publication is to be read in conjunction with IEC 60079-0:2011.

Committee
TC 31
DevelopmentNote
Supersedes IEC 61241-1. (11/2008) To be read in conjunction with IEC 60079-0. Stability date: 2018. (11/2013)
DocumentType
Standard
Pages
30
PublisherName
International Electrotechnical Committee
Status
Superseded
SupersededBy
Supersedes

UNE-EN 60079-17:2014 Explosive atmospheres - Part 17: Electrical installations inspection and maintenance
CEN/TR 16787:2014 Industrial Gas Installation - Guideline
UNE-EN 50050-2:2014 Electrostatic hand-held spraying equipment - Safety requirements - Part 2: Hand-held spraying equipment for ignitable coating powder
IEC 60335-2-69 REDLINE : 5.0 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - SAFETY - PART 2-69: PARTICULAR REQUIREMENTS FOR WET AND DRY VACUUM CLEANERS, INCLUDING POWER BRUSH, FOR COMMERCIAL USE
CSA C22.2 No. 60079.0 : 2015 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS
CSA C22.2 No. 60079-28 : 2016 EXPLOSIVE ATMOSPHERES - PART 28: PROTECTION OF EQUIPMENT AND TRANSMISSION SYSTEMS USING OPTICAL RADIATION
IEC 60079-0:2017 Explosive atmospheres - Part 0: Equipment - General requirements
S.R. CEN/TR 16787:2014 INDUSTRIAL GAS INSTALLATION - GUIDELINE
UNE-EN 50050-3:2014 Electrostatic hand-held spraying equipment - Safety requirements - Part 3: Hand-held spraying equipment for ignitable flock
EN ISO 80079-36:2016 Explosive atmospheres - Part 36: Non-electrical equipment for explosive atmospheres - Basic method and requirements (ISO 80079-36:2016)
BS EN ISO 80079-36:2016 Explosive atmospheres Non-electrical equipment for explosive atmospheres. Basic method and requirements
BS EN 1755:2015 Industrial Trucks. Safety requirements and verification. Supplementary requirements for operation in potentially explosive atmospheres
BS EN 60079-18 : 2015 EXPLOSIVE ATMOSPHERES - PART 18: EQUIPMENT PROTECTION BY ENCAPSULATION 'M'
EN 60079-28:2015 Explosive atmospheres - Part 28: Protection of equipment and transmission systems using optical radiation
EN 50050-3:2013 Electrostatic hand-held spraying equipment - Safety requirements - Part 3: Hand-held spraying equipment for ignitable flock
I.S. EN 60079-28:2015 EXPLOSIVE ATMOSPHERES - PART 28: PROTECTION OF EQUIPMENT AND TRANSMISSION SYSTEMS USING OPTICAL RADIATION
12/30268608 DC : 0 BS EN 60079-17/ED 5 - EXPLOSIVE ATMOSPHERES - PART 17: ELECTRICAL INSTALLATIONS INSPECTION AND MAINTENANCE
I.S. EN ISO 80079-36:2016 EXPLOSIVE ATMOSPHERES - PART 36: NON-ELECTRICAL EQUIPMENT FOR EXPLOSIVE ATMOSPHERES - BASIC METHOD AND REQUIREMENTS (ISO/DIS 80079-36:2014)
DIN EN ISO 80079-36 E : 2016 EXPLOSIVE ATMOSPHERES - PART 36: NON-ELECTRICAL EQUIPMENT FOR EXPLOSIVE ATMOSPHERES - BASIC METHOD AND REQUIREMENTS (ISO 80079-36:2016)
ISO 80079-36:2016 Explosive atmospheres Part 36: Non-electrical equipment for explosive atmospheres Basic method and requirements
09/30206527 DC : 0 BS EN 60079-0 ED 6.0 - EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS
BIS IS/IEC 60079-0 : 2011 EXPLOSIVE ATMOSPHERES - PART 0: GENERAL REQUIREMENTS
DIN EN 1755:2016-02 Industrial Trucks - Safety requirements and verification - Supplementary requirements for operation in potentially explosive atmospheres
I.S. EN 1755:2015 INDUSTRIAL TRUCKS - SAFETY REQUIREMENTS AND VERIFICATION - SUPPLEMENTARY REQUIREMENTS FOR OPERATION IN POTENTIALLY EXPLOSIVE ATMOSPHERES
EN 60079-14:2014/AC:2016 EXPLOSIVE ATMOSPHERES - PART 14: ELECTRICAL INSTALLATIONS DESIGN, SELECTION AND ERECTION (IEC 60079-14:2013/COR1:2016)
BIS IS/IEC 60079-18 : 2009 EXPLOSIVE ATMOSPHERES - PART 18: EQUIPMENT PROTECTION BY ENCAPSULATION 'M'
VDI 2263 Blatt 5.1:2014-10 Dust fires and dust explosions - Hazards, assessment, protective measures - Explosion protection in fluid bed dryers - Hints and examples of operation
VDI 2262 Blatt 1:2013-06 Workplace air - Reduction of exposure to air pollutants - Legal principles, terms and definitions, basic organisational measures for industrial safety and environmental protection
VDI 2263 Blatt 6:2017-08 Dust fires and dust explosions - Hazards - assessment - protective measures - Dust fires and explosion protection in dust extracting installations
CEI EN 50050-2 : 2014 ELECTROSTATIC HAND-HELD SPRAYING EQUIPMENT - SAFETY REQUIREMENTS - PART 2: HAND-HELD SPRAYING EQUIPMENT FOR IGNITABLE COATING POWDER
BS EN 50050-2:2013 Electrostatic hand-held spraying equipment. Safety requirements Hand-held spraying equipment for ignitable coating powder
BS EN 60079-10-2:2015 Explosive atmospheres Classification of areas. Explosive dust atmospheres
BS EN 60079-17:2014 Explosive atmospheres Electrical installations inspection and maintenance
CEI EN 60079-17 : 2015 EXPLOSIVE ATMOSPHERES - PART 17: ELECTRICAL INSTALLATIONS INSPECTION AND MAINTENANCE
BS EN 50050-3:2013 Electrostatic hand-held spraying equipment. Safety requirements Hand-held spraying equipment for ignitable flock
13/30248785 DC : 0 BS EN 61800-2 - ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 2: GENERAL REQUIREMENTS - RATING SPECIFICATIONS FOR LOW VOLTAGE ADJUSTABLE FREQUENCY A.C. POWER DRIVE SYSTEMS
PD CEN/TR 16787:2014 Industrial Gas Installation. Guideline
UNE-EN 60079-10-2:2016 Explosive atmospheres - Part 10-2: Classification of areas - Explosive dust atmospheres
IEC 60079-10-2:2015 RLV Explosive atmospheres - Part 10-2: Classification of areas - Explosive dust atmospheres
IEC 60335-2-69:2016 RLV Household and similar electrical appliances - Safety - Part 2-69: Particular requirements for wet and dry vacuum cleaners, including power brush, for commercial use
I.S. EN 50050-2:2013 ELECTROSTATIC HAND-HELD SPRAYING EQUIPMENT - SAFETY REQUIREMENTS - PART 2: HAND-HELD SPRAYING EQUIPMENT FOR IGNITABLE COATING POWDER
I.S. EN 60079-17:2014 EXPLOSIVE ATMOSPHERES - PART 17: ELECTRICAL INSTALLATIONS INSPECTION AND MAINTENANCE
CEI EN 60079-18 : 2016 EXPLOSIVE ATMOSPHERES - PART 18: EQUIPMENT PROTECTION BY ENCAPSULATION 'M'
IEC 60335-2-69:2016 Household and similar electrical appliances - Safety - Part 2-69: Particular requirements for wet and dry vacuum cleaners, including power brush, for commercial use
IEC 60079-18:2014 RLV Explosive atmospheres - Part 18: Equipment protection by encapsulation “m”
EEMUA 186 : 2016 A PRACTITIONER'S HANDBOOK FOR POTENTIALLY EXPLOSIVE ATMOSPHERES
UNE-EN 60079-14:2016 Explosive atmospheres - Part 14: Electrical installations design, selection and erection
UNE-EN 1755:2016 Industrial Trucks - Safety requirements and verification - Supplementary requirements for operation in potentially explosive atmospheres
BS EN 60079-14:2014 Explosive atmospheres Electrical installations design, selection and erection
I.S. EN 60079-14:2014 EXPLOSIVE ATMOSPHERES - PART 14: ELECTRICAL INSTALLATIONS DESIGN, SELECTION AND ERECTION
IEC 60079-0:2017 RLV Explosive atmospheres - Part 0: Equipment - General requirements
UNE-EN 60079-0:2013 Explosive atmospheres - Part 0: Equipment - General requirements
13/30271432 DC : 0 BS EN 60079-18 ED 4.0 - EXPLOSIVE ATMOSPHERES - PART 18: EQUIPMENT PROTECTION BY ENCAPSULATION 'M'
DIN EN ISO 80079-36:2016-12 Explosive atmospheres - Part 36: Non-electrical equipment for explosive atmospheres - Basic method and requirements (ISO 80079-36:2016)
EN 1755:2015 Industrial Trucks - Safety requirements and verification - Supplementary requirements for operation in potentially explosive atmospheres
15/30277841 DC : 0 BS EN 62784 ED 1.0 - PARTICULAR REQUIREMENTS FOR VACUUM CLEANERS AND DUST EXTRACTORS PROVIDING EQUIPMENT PROTECTION LEVEL DC FOR THE COLLECTION OF COMBUSTIBLE DUSTS
UNE-EN 60079-28:2016 Explosive atmospheres - Part 28: Protection of equipment and transmission systems using optical radiation
CEI EN 50050-3 : 2014 ELECTROSTATIC HAND-HELD SPRAYING EQUIPMENT - SAFETY REQUIREMENTS - PART 3: HAND-HELD SPRAYING EQUIPMENT FOR IGNITABLE FLOCK
BS EN 60079-28:2015 Explosive atmospheres Protection of equipment and transmission systems using optical radiation
I.S. EN 60079-10-2:2015 EXPLOSIVE ATMOSPHERES - PART 10-2: CLASSIFICATION OF AREAS - EXPLOSIVE DUST ATMOSPHERES
I.S. EN 50050-3:2013 ELECTROSTATIC HAND-HELD SPRAYING EQUIPMENT - SAFETY REQUIREMENTS - PART 3: HAND-HELD SPRAYING EQUIPMENT FOR IGNITABLE FLOCK
EN 60079-18:2015/A1:2017 EXPLOSIVE ATMOSPHERES - PART 18: EQUIPMENT PROTECTION BY ENCAPSULATION 'M' (IEC 60079-18:2014/A1:2017)
BS EN 60079-0 : 2012 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS
I.S. EN 60079-18:2015 EXPLOSIVE ATMOSPHERES - PART 18: EQUIPMENT PROTECTION BY ENCAPSULATION 'M'
IEC 60079-18 : 2014 REDLINE EXPLOSIVE ATMOSPHERES - PART 18: EQUIPMENT PROTECTION BY ENCAPSULATION 'M'
IEC 60079-0 REDLINE : 7.0 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS
I.S. EN 60079-0:2012 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS (IEC 60079-0:2011 (MOD))
IEC 60079-10-2 REDLINE : 2ED 2015 EXPLOSIVE ATMOSPHERES - PART 10-2: CLASSIFICATION OF AREAS - EXPLOSIVE DUST ATMOSPHERES
IEC 60079-17:2013 Explosive atmospheres - Part 17: Electrical installations inspection and maintenance
12/30269297 DC : 0 BS EN 60079-14/ED 5 - EXPLOSIVE ATMOSPHERES - PART 14: ELECTRICAL INSTALLATIONS DESIGN, SELECTION AND ERECTION
UNE-EN ISO 80079-36:2017 Explosive atmospheres - Part 36: Non-electrical equipment for explosive atmospheres - Basic method and requirements (ISO 80079-36:2016)
12/30236742 DC : 0 BS ISO/IEC 80079-36 - EXPLOSIVE ATMOSPHERES - PART 36: NON-ELECTRICAL EQUIPMENT FOR USE IN EXPLOSIVE ATMOSPHERES - BASIC METHODS AND REQUIREMENTS
EN 60079-0:2012/A11:2013 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS (IEC 60079-0:2011, MODIFIED)
EN 60079-17:2014 Explosive atmospheres - Part 17: Electrical installations inspection and maintenance
EN 50050-2 : 2013 ELECTROSTATIC HAND-HELD SPRAYING EQUIPMENT - SAFETY REQUIREMENTS - PART 2: HAND-HELD SPRAYING EQUIPMENT FOR IGNITABLE COATING POWDER
EN 60079-10-2:2015 Explosive atmospheres - Part 10-2: Classification of areas - Explosive dust atmospheres

IEC 60050-426:2008 International Electrotechnical Vocabulary (IEV) - Part 426: Equipment for explosive atmospheres
IEC 60691:2015 Thermal-links - Requirements and application guide
IEC 60079-0:2011 Explosive atmospheres - Part 0: Equipment - General requirements
ISO 965-1:2013 ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data

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