SIST EN IEC 60079-19:2025
(Main)Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation (IEC 60079-19:2025)
Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation (IEC 60079-19:2025)
IEC 60079-19:2025 applies to service facilities and covers only those factors related to overhaul, repair or reclamation of Ex Equipment specifically designed for hazardous areas, where the hazard is caused by explosive atmospheres. Ex Equipment can be overhauled, repaired or reclaimed to mitigate deficiencies identified during operation, inspection and maintenance.
It does not include:
• advice on cable and wiring systems which can require a renewal when the equipment is re-installed;
• Repair or overhaul of Type of Protection “m”;
• Repair or overhaul of Ex Components;
• Requirements for manufacturers who overhaul and repair equipment which they have manufactured
This fifth edition cancels and replaces the fourth edition published in 2019. This edition constitutes a technical revision.
Users of this document are advised that interpretation sheets clarifying the interpretation of this document can be published. Interpretation sheets are available from the IEC webstore and can be found in the “history” tab of the page for each document.
The significance of changes between IEC 60079-19, Edition 5 (2025) and IEC 60079-19, Edition 4 (2019) are as listed in the foreword of this standard.
Explosionsgefährdete Bereiche - Teil 19: Gerätereparatur, Überholung und Regenerierung (IEC 60079-19:2025)
Atmosphères explosives - Partie 19: Réparation, révision et remise en état de l’appareil (IEC 60079-19:2025)
IEC 60079-19:2025 s’applique aux ateliers de service et couvre uniquement les facteurs liés à la révision, la réparation ou la remise en état des appareils Ex spécialement conçus pour les emplacements dangereux, où le danger provient des atmosphères explosives. L’appareil Ex peut être révisé, réparé ou remis en état de manière à atténuer les déficiences identifiées en fonctionnement et lors d’opérations d’inspection et de maintenance.
Le présent document ne comprend pas:
• de conseils sur les systèmes de câblage qui peuvent exiger un renouvellement quand l’appareil est réinstallé;
• la réparation ou la révision pour le mode de protection "m";
• la réparation ou la révision pour des composants Ex;
• d’exigences pour les fabricants qui révisent et réparent l’appareil qu’ils ont fabriqué.
Cette cinquième édition annule et remplace la quatrième édition parue en 2019. Cette édition constitue une révision technique.
Les modifications techniques majeures suivantes par rapport à l’édition précédente se trouvent en avant-propos.
Eksplozivne atmosfere - 19. del: Popravilo, obnova in remont opreme (IEC 60079-19:2025)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2025
Eksplozivne atmosfere - 19. del: Popravilo, obnova in remont opreme (IEC 60079-
19:2025)
Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation (IEC
60079-19:2025)
Explosionsgefährdete Bereiche - Teil 19: Gerätereparatur, Überholung und
Regenerierung (IEC 60079-19:2025)
Atmosphères explosives - Partie 19: Réparation, révision et remise en état de l’appareil
(IEC 60079-19:2025)
Ta slovenski standard je istoveten z: EN IEC 60079-19:2025
ICS:
29.260.20 Električni aparati za Electrical apparatus for
eksplozivna ozračja explosive atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60079-19
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2025
ICS 29.260.20 Supersedes EN IEC 60079-19:2019
English Version
Explosive atmospheres - Part 19: Equipment repair, overhaul
and reclamation
(IEC 60079-19:2025)
Atmosphères explosives - Partie 19: Réparation, révision et Explosionsgefährdete Bereiche - Teil 19: Gerätereparatur,
remise en état de l'appareil Überholung und Regenerierung
(IEC 60079-19:2025) (IEC 60079-19:2025)
This European Standard was approved by CENELEC on 2025-08-20. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60079-19:2025 E
European foreword
The text of document 31J/386/FDIS, future edition 5 of IEC 60079-19, prepared by SC 31J
"Classification of hazardous areas and installation requirements" of IEC/TC 31 "Equipment for
explosive atmospheres" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60079-19:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-09-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-09-30
document have to be withdrawn
This document supersedes EN IEC 60079-19:2019 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60079-19:2025 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60034 (series) NOTE Approved as EN IEC 60034 (series)
IEC 60364 (series) NOTE Approved as HD 60364 (series)
IEC 60079-18 NOTE Approved as EN 60079-18
IEC/TS 60079-39 NOTE Approved as CLC IEC/TS 60079-39
IEC/TS 60079-47 NOTE Approved as CLC IEC/TS 60079-47
ISO 9000 NOTE Approved as EN ISO 9000
ISO 9001 NOTE Approved as EN ISO 9001
ISO/IEC 17000 NOTE Approved as EN ISO/IEC 17000
ISO/IEC 17024 NOTE Approved as EN ISO/IEC 17024
ISO/IEC 80079-34 NOTE Approved as EN ISO/IEC 80079-34
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60034-23 - Rotating electrical machines - Part 23: Repair, EN IEC 60034-23 -
overhaul and reclamation
IEC 60079-0 - Explosive atmospheres - Part 0: Equipment - EN IEC 60079-0 -
General requirements
IEC 60079-1 - Explosive atmospheres - Part 1: Equipment EN 60079-1 -
protection by flameproof enclosures "d"
IEC 60079-2 - Explosive atmospheres - Part 2: Equipment EN 60079-2 -
protection by pressurized enclosure "p"
IEC 60079-5 - Explosive atmospheres - Part 5: Equipment EN 60079-5 -
protection by powder filling “q”
IEC 60079-6 - Explosive atmospheres - Part 6: Equipment EN 60079-6 -
protection by liquid immersion "o"
IEC 60079-7 - Explosive atmospheres - Part 7: Equipment EN 60079-7 -
protection by increased safety "e"
IEC 60079-11 - Explosive atmospheres - Part 11: Equipment EN IEC 60079-11 -
protection by intrinsic safety "i"
IEC 60079-14 - Explosive atmospheres - Part 14: Electrical EN IEC 60079-14 -
installation design, selection and installation of
equipment, including initial inspection
IEC 60079-15 - Explosive atmospheres - Part 15: Equipment EN IEC 60079-15 -
protection by type of protection "n"
IEC 60079-17 - Explosive atmospheres - Part 17: Electrical EN IEC 60079-17 -
installations inspection and maintenance
IEC 60079-26 - Explosive atmospheres - Part 26: Equipment EN IEC 60079-26 -
with Separation Elements or combined Levels
of Protection
IEC/IEEE 60079-30-1 - Explosive atmospheres - Part 30-1: Electrical EN 60079-30-1 -
resistance trace heating - General and testing
requirements
IEC/IEEE 60079-30-2 - Explosive atmospheres - Part 30-2: Electrical EN 60079-30-2 -
resistance trace heating - Application guide for
design, installation and maintenance
Publication Year Title EN/HD Year
IEC 60079-31 - Explosive atmospheres - Part 31: Equipment EN IEC 60079-31 -
dust ignition protection by enclosure "t"
IEC 60079-33 - Explosive atmospheres - Part 33: Equipment CLC/TR 60079-33 -
protection by special protection “s”
IEC 60085 - Electrical insulation - Thermal evaluation and EN 60085 -
designation
IEC 60112 - Method for the determination of the proof and EN IEC 60112 -
the comparative tracking indices of solid
insulating materials
IEC 60529 - Degrees of protection provided by enclosures EN 60529 -
(IP Code)
IEC 61241-0 - Electrical apparatus for use in the presence of - -
combustible dust -- Part 0: General
requirements
IEC 61241-1 - Electrical apparatus for use in the presence of - -
combustible dust -- Part 1: Protection by
enclosures "tD"
IEC 61241-1-1 - Electrical apparatus for use in the presence of - -
combustible dust -- Part 1-1: Electrical
apparatus protected by enclosures and surface
temperature limitation - Specification for
apparatus
IEC 61241-4 - Electrical apparatus for use in the presence of - -
combustible dust -- Part 4: Type of protection
'pD'
ISO 4063 - Welding, brazing, soldering and cutting – EN ISO 4063 -
Nomenclature of processes and reference
numbers
ISO 4526 - Metallic coatings_- Electroplated coatings of EN ISO 4526 -
nickel for engineering purposes
ISO 6158 - Metallic and other inorganic coatings – EN ISO 6158 -
Electrodeposited coatings of chromium for
engineering purposes
ISO 80079-36 - Explosive atmospheres - Part 36: Non-electrical EN ISO 80079-36 -
equipment for explosive atmospheres - Basic
method and requirements
ISO 80079-37 2016 Explosive atmospheres - Part 37: Non-electrical EN ISO 80079-37 2016
equipment for explosive atmospheres - Non-
electrical type of protection constructional safety
"c", control of ignition source "b", liquid
immersion "k"
Withdrawn and replaced by IEC 60079-0:2011.
Withdrawn and replaced by IEC 60079-31:2008.
Withdrawn and replaced by IEC 61241-0:2004 and IEC 61241-1:2004 (withdrawn and replaced by IEC 60079-
31:2008).
Withdrawn and replaced by IEC 60079-2:2014.
IEC 60079-19 ®
Edition 5.0 2025-07
INTERNATIONAL
STANDARD
Explosive atmospheres –
Part 19: Equipment repair, overhaul and reclamation
ICS 29.260.20 ISBN 978-2-8327-0482-0
IEC 60079-19:2025-07(en)
IEC 60079-19:2025 © IEC 2025
CONTENTS
FOREWORD . 6
INTRODUCTION . 17
1 Scope . 18
2 Normative references . 18
3 Terms and definitions . 20
4 General . 26
4.1 General principles . 26
4.1.1 Overview . 26
4.1.2 Related drawings . 26
4.2 Status of equipment after overhaul or repair . 27
4.2.1 General . 27
4.2.2 Repair using Schedule Drawings or related drawings. 27
4.2.3 Repair using relevant standards . 28
4.2.4 Repairs with expert evaluation . 28
4.2.5 Legacy Group II and III equipment repairs with user evaluation . 28
4.2.6 Repairs of equipment not in compliance with the relevant standards . 28
4.3 Instructions for the user . 29
4.3.1 General . 29
4.3.2 Records and work instructions . 29
4.3.3 Re-installation of repaired equipment . 30
4.4 Service facility requirements . 30
4.4.1 Statutory requirements . 30
4.4.2 General . 30
4.4.3 Control of overhaul, repair and reclamation . 30
4.4.4 Overhaul, repair and reclamation requirements. 34
4.4.5 Alterations . 35
4.4.6 Modifications . 35
4.4.7 Marking of overhauled or repaired equipment . 35
4.4.8 Documentation . 36
4.4.9 Spare parts . 38
4.4.10 Temporary repairs . 39
4.4.11 Reclamations . 39
4.4.12 Mechanical reclamations . 40
4.4.13 Electric winding reclamations . 43
4.4.14 Converter fed electric machine . 47
4.4.15 Variable speed drives . 47
4.4.16 Auxiliary equipment . 47
4.4.17 Ballasts . 48
4.4.18 Enclosed break devices . 48
4.4.19 Breathing devices . 48
4.4.20 Control equipment . 48
5 Additional requirements for the repair and overhaul of equipment with Type of
Protection "d" . 48
5.1 Application . 48
5.2 Repair and overhaul . 49
5.2.1 Enclosures . 49
5.2.2 Water jackets. 50
IEC 60079-19:2025 © IEC 2025
5.2.3 Entries into enclosures . 51
5.2.4 Terminations. 51
5.2.5 Flameproof brake units . 51
5.2.6 Other auxiliary devices . 51
5.3 Reclamation . 51
5.3.1 General . 51
5.3.2 Enclosures . 51
5.4 Alterations . 53
5.4.1 Entries into enclosures . 53
5.4.2 Terminations. 53
5.4.3 Windings . 53
5.4.4 Auxiliary equipment . 53
5.4.5 Modifications – Enclosures . 53
6 Additional requirements for the repair and overhaul of equipment with Type of
Protection "i" . 53
6.1 Application . 53
6.2 Repair and overhaul . 54
6.2.1 Enclosures . 54
6.2.2 Cable glands . 54
6.2.3 Terminations. 54
6.2.4 Soldered connections . 54
6.2.5 Fuses . 55
6.2.6 Relays . 55
6.2.7 Shunt diode safety barriers and galvanic isolators . 55
6.2.8 Printed circuit boards . 56
6.2.9 Optocouplers and piezoelectric components . 56
6.2.10 Electrical components . 56
6.2.11 Batteries . 57
6.2.12 Internal wiring . 57
6.2.13 Transformers . 57
6.2.14 Encapsulated components . 57
6.2.15 Non-electrical parts . 57
6.2.16 Testing . 57
6.3 Reclamation . 58
6.4 Modifications . 58
7 Additional requirements for the repair and overhaul of equipment with Type of
Protection "p" . 58
7.1 Application . 58
7.2 Repair and overhaul . 58
7.2.1 Enclosures . 58
7.2.2 Entries into enclosures . 59
7.2.3 Terminations. 59
7.2.4 Electric machines – Pressurization . 59
7.2.5 Auxiliary devices . 59
7.3 Reclamation . 59
7.4 Alterations . 59
7.4.1 Enclosures . 59
7.4.2 Entries into enclosures . 59
7.4.3 Terminations. 59
IEC 60079-19:2025 © IEC 2025
7.4.4 Auxiliary equipment . 60
7.5 Modifications . 60
7.6 Pressurization system . 60
8 Additional requirements for the repair and overhaul of equipment with Type of
Protection "e" or Level of Protection "eb" . 60
8.1 Application . 60
8.2 Repair and overhaul . 61
8.2.1 Enclosures . 61
8.2.2 Entries into enclosures . 61
8.2.3 Electric machines . 61
8.2.4 Temperature detectors . 62
8.2.5 Lamps . 62
8.2.6 Lampholders . 62
8.3 Reclamation . 62
8.4 Alterations . 62
8.4.1 Enclosures . 62
8.4.2 Entries into enclosures . 63
8.4.3 Auxiliary equipment . 63
8.5 Modifications . 63
8.5.1 Windings . 63
8.5.2 Terminations. 63
9 Additional requirements for the repair and overhaul of equipment with Type of
Protection "nA" or Level of Protection "ec" . 63
9.1 Application . 63
9.2 Repair and overhaul . 63
9.2.1 Enclosures . 63
9.2.2 Entries into enclosures . 64
9.2.3 Terminations. 64
9.2.4 Electric machines – Repair of windings . 64
9.3 Reclamation . 65
9.4 Alterations and modifications . 65
9.4.1 Enclosures . 65
9.4.2 Entries into enclosures . 65
9.4.3 Terminations. 65
9.4.4 Windings . 65
9.4.5 Auxiliary equipment . 65
10 Additional requirements for the repair and overhaul of equipment covered by
IEC 60079-26 . 66
11 Additional requirements for the repair and overhaul of equipment with Type of
Protection "t" (formerly "tD" or DIP) . 66
11.1 Application . 66
11.2 Repair and overhaul . 66
11.2.1 Enclosures . 66
11.2.2 Entries into enclosures . 67
11.2.3 Terminations. 67
11.2.4 Internal connections . 67
11.2.5 Electric machines . 67
11.3 Reclamation . 67
11.3.1 General . 67
IEC 60079-19:2025 © IEC 2025
11.3.2 Enclosures . 67
11.3.3 Joints . 67
11.3.4 Shafts and housings . 68
11.4 Alterations and modifications . 68
11.4.1 Enclosures . 68
11.4.2 Entries into enclosures . 68
11.4.3 Windings . 68
11.4.4 Auxiliary equipment . 68
12 Requirements for the repair and overhaul of equipment with Type of Protection "o" . 68
12.1 Application . 68
12.2 Repair and overhaul . 69
12.2.1 Associated Types of Protection . 69
12.2.2 Protective liquid . 69
12.2.3 Replacement of components . 69
12.2.4 Closure of container . 69
12.3 Reclamation . 69
12.4 Modifications . 69
13 Requirements for the repair and overhaul of equipment with Type of Protection "q" . 70
13.1 Application . 70
13.2 Repair and overhaul . 70
13.2.1 Associated Types of Protection . 70
13.2.2 Removal of protective materials . 70
13.2.3 Replacement of components . 70
13.2.4 Preparation for replacing filling material . 70
13.2.5 Filling material . 70
13.2.6 Closure of container . 70
13.3 Reclamation . 70
13.4 Modifications . 71
14 Requirements for the repair and overhaul of equipment with Type of Protection "s" . 71
15 Electrical resistance trace heating . 71
16 Requirements for the overhaul and repair of non-equipment with Type of
Protection "h" . 71
16.1 Application . 71
16.2 Repair and overhaul – Complementary method of ignition protection "c", "b"
and "k" . 71
16.3 Associated protection techniques . 72
16.4 Protective liquid . 72
16.4.1 Removal of protective liquid . 72
16.4.2 Preparation for replacing protective liquid . 72
16.4.3 Replacement protective liquid . 72
16.5 Replacement of components . 72
16.6 Closure of enclosure . 72
16.7 Reclamation . 72
16.8 Alterations . 72
Annex A (normative) Identification of repaired Ex Equipment by marking . 73
A.1 Marking information . 73
A.2 Symbols . 73
A.2.1 Repair Symbols . 73
IEC 60079-19:2025 © IEC 2025
A.2.2 Repair in accordance with Schedule Drawings or manufacturer's
specification . 73
A.2.3 Type of Protection standards . 74
A.2.4 Repair in accordance with expert evaluation . 74
A.2.5 Legacy Group II and III equipment repairs with user evaluation . 74
A.2.6 Repairs of equipment not in compliance with the relevant standards . 75
Annex B (normative) Knowledge, skills and competence of responsible persons and
operatives . 76
B.1 General . 76
B.2 Knowledge and skills . 76
B.2.1 Responsible persons . 76
B.2.2 Operatives . 76
B.3 Competence . 76
B.3.1 General . 76
B.3.2 Responsible persons . 77
B.3.3 Operatives . 77
B.4 Assessment . 77
B.5 Qualification of reclamation operatives. 77
Annex C (normative) Requirements for measurements in flameproof equipment during
overhaul, repair and reclamation (including guidance on tolerances). 78
Annex D (normative) Quality management system requirements . 81
Annex E (normative) Electric machine copy rewind requirements . 82
Annex F (informative) Additional requirements relating to Ex control equipment . 84
F.1 General . 84
F.2 Common items . 84
F.3 Isolators and circuit interrupters . 84
F.4 Interlocks and mechanical linkages . 85
F.5 Earth fault devices . 85
F.6 Other devices . 85
F.7 Transformers . 85
F.8 Change assessed by a responsible person . 86
Bibliography . 87
Figure 1 – Overhaul, repair and reclamation flow chart . 33
Figure A.1 – Repair marking . 73
Figure C.1 – Determination of maximum gap of reclaimed parts . 80
Table 1 – Pressure Test Requirements . 50
Table C.1 – Determination of maximum gap of reclaimed parts . 79
IEC 60079-19:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Explosive atmospheres -
Part 19: Equipment repair, overhaul and reclamation
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60079-19 has been prepared by Subcommittee 31J: Classification of hazardous areas and
installation requirements of IEC Technical Committee 31: Equipment for explosive
atmospheres. It is an International Standard.
This fifth edition cancels and replaces the fourth edition published in 2019. This edition
constitutes a technical revision.
Users of this document are advised that interpretation sheets clarifying the interpretation of this
document can be published. Interpretation sheets are available from the IEC webstore and can
be found in the "history" tab of the page for each document.
IEC 60079-19:2025 © IEC 2025
The significance of changes between IEC 60079-19, Edition 5 (2025) and IEC 60079-19,
Edition 4 (2019) are as listed below:
Type
Explanation of the significance of changes Clause Minor and Extension Major
editorial technical
changes changes
Reference to IEC 60079 series moved before Introduction X
IEC 60034 series
Scope restructured and reworded to clarify Scope 1 X
of this document and align with other TC31
standards
New bullet point clarifying that Ex Components are 1 X
not repaired
Normative references updated to include all 2 X
standards referenced in the text
For Terms, with this document as the source 3 X
document, as identified in IEC 60050-426:2020 as
426-15-xx the source reference has been omitted
from this document since this document is the
source
New Terms related to certificates, to group related 3.2 X
terms
Term certificate, amended to align with new 3.2.1 X
IEC 60079-0. Former definitions 3.2.1 and 3.2.2
deleted, these are defined in IEC 60079-0, in this
document remaining definitions become 3.2.1 and
3.2.2
Term Schedule Drawing, kept even though it is in 3.2.2 X
IEC 60079-0 to maintain connection with related
drawings
Note 1 added to term related drawings, to assist 3.2.3 X
manufacturers who consider Schedule Drawings
intellectual property not accessible by others
Previous Term 3.27 renumbered and Deprecated 3.6 X
Term dust ignition protection "tD" added with
amended Note 1
Previous 3.7 Term flameproof enclosure "d" 3.8 X
definition updated to current IEV definition
Previous 3.8 Term increased safety "e" definition 3.9 X
updated to forthcoming IEC 60079-7 Ed 6.0
Previous 3.9 renumbered and Source updated 3.10 X
Previous 3.11 with 3.11 X
added
Term non-electrical equipment added 3.14 X
Previous 3.10 renumbered and Term corrected 3.15 X
Previous 3.17 deleted Depreciated Term "pD" 3.19 X
added to 3.19 "p"
New Term 3.21 qualification added 3.20 X
Previous 3.18 renumbered Note deleted now a 3.21 X
Term 3.22
New Term relevant standard added, previously a 3.22 X
Note in 3.18 and 3.19
Previous 3.19 renumbered Note deleted now a 3.23 X
Term 3.22
New Term added Type of Protection "h" 3.27 A1
New Term added for non-electrical Equipment with 3.27.1 A1
method of ignition protection -control of ignition
sources "b"
IEC 60079-19:202
...
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