International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 60079-10-1:2009
Title Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres
Project Number 20778
Abstract/Scope IEC 60079-10-1:2008 is concerned with the classification of areas where flammable gas or vapour or mist hazards may arise and may then be used as a basis to support the proper selection and installation of equipment for use in a hazardous area. It is intended to be applied where there may be an ignition hazard due to the presence of flammable gas or vapour, mixed with air under normal atmospheric conditions, but it does not apply to a) mines susceptible to firedamp; b) the processing and manufacture of explosives; c) areas where a hazard may arise due to the presence of combustible dusts or fibres; d) catastrophic failures which are beyond the concept of abnormality; e) rommos used for medial purposes; f) domestic premises. This first edition of IEC 60079-10-1 cancels and replaces the fourth edition of IEC 60079-10, published in 2002, and constitutes a technical revision. The significant technical changes with respect to the previous edition are: - introduction of Annex D which deals with explosion hazard from flammable mists generated by the release under pressure of high flash point liquids; - introduction of Clause A.3 (release rate) which gives thermodynamic equations for release rate with a number of examples for estimating release rate of fluids and gases.


Current Stage code 6060
Current Stage code date 2009-03-26
Current Stage code deadline 2009-12-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/SC 31J
Reference Document IEC 60079-10-1:2008 (EQV)
ICS 29.260.20 - Electrical apparatus for explosive atmospheres
Keywords Explosive; Atmosphere; Gas; Area; Classification
Note Supersedes EN 60079-10:2003 * D146/019: CLC/SC 31-1 declared dormant, all active WIs transferred to CLC/TC 31.
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2009-03-26 2009-12-01 export to doc file  EN  FR  DE
5099 2009-03-01 2009-05-01  
5061 2009-01-27 2009-03-01  
5060 2008-11-18 2008-12-02 export to doc file  EN
5020 2008-09-12 2008-11-14  
3090 2007-12-07 2008-07-31  
5060 2007-12-04 2007-12-17 export to doc file  EN
5020 2007-06-29 2007-11-30  
1090 2007-06-26 2007-06-29  
2020 2006-11-03 2007-05-03  
5020 2006-07-07 2006-12-08  
1090 2006-07-04 2006-07-07  

Implementation Dates

date of Ratification (DOR) (1) 2009-03-01
date of Availability (DAV) (2) 2009-03-26
date of Announcement (DOA) (3) 2009-06-01
date of Publication (DOP) (4) 2009-12-01
date of Withdrawal (DOW) (5) 2012-03-01


Supersedes EN 60079-10:2003
Superseded by  
Normative reference (6) IEC 60050-426:2008
EN 60079-0:2009
IEC 60079-4:1975
IEC 60079-4A:1970
IEC/TR 60079-20:1996

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.