EN IEC 60079-19:2025
(Main)Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation
Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation
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
Atmosphères explosives - Partie 19: Réparation, révision et remise en état de l’appareil
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
Overview
EN IEC 60079-19:2025 - Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation - provides guidance and requirements for service facilities carrying out overhaul, repair and reclamation of Ex Equipment designed for hazardous areas where the hazard is caused by explosive atmospheres. This fifth edition (2025) supersedes EN IEC 60079-19:2019 and constitutes a technical revision. Interpretation sheets clarifying specific points may be published and are available from the IEC webstore.
Scope highlights
- Applies to service facilities and activities specifically related to repair, overhaul and reclamation of equipment intended for explosive atmospheres.
- Covers status after overhaul, records and work instructions, control of repair activities, marking, spare parts, temporary repairs and reclamation processes.
- Excludes: advice on cable/wiring renewal on re‑installation, repair/overhaul of Type of Protection “m”, repair/overhaul of Ex Components, and requirements for manufacturers repairing their own products.
Key topics
- General principles and status after repair - requirements for returning equipment to service and use of schedule drawings or expert evaluations.
- Service facility requirements - statutory obligations, control processes, documentation, marking and traceability for overhauled or reclaimed equipment.
- Records and user instructions - documentation to accompany repaired equipment and guidance for re‑installation.
- Overhaul, repair and reclamation work - mechanical reclamation, electric winding reclamations, converter‑fed machines, variable speed drives, auxiliary equipment and ballasts (see standard for full list).
- Type-specific requirements - additional, detailed provisions for Type of Protection "d" (flameproof) and "i" (intrinsic safety) (enclosures, entries, terminations, windings, testing).
- Quality control - guidance on spare parts, temporary repairs, alterations, modifications and testing after repair.
Applications and users
Who will use EN IEC 60079-19:2025:
- Service facilities and repair shops performing maintenance on Ex Equipment
- Maintenance and reliability engineers in oil & gas, chemical, pharmaceutical, mining and other industries with hazardous areas
- Safety managers, asset owners and inspection/maintenance personnel
- Certification bodies and compliance officers assessing repaired equipment
Practical benefits:
- Ensures repaired equipment maintains appropriate explosion protection
- Provides a documented approach for traceability, testing and marking after overhaul
- Reduces risk of ignition sources introduced during repair or reclamation
Related standards
EN IEC 60079-19:2025 references and aligns with other standards in the IEC/ISO series, including (but not limited to) IEC 60079-0, IEC 60079-1, IEC 60079-17, IEC 60079-14, IEC 60079-31, and ISO 80079-36. Consult the standard’s normative references for exact relationships.
Keywords: EN IEC 60079-19:2025, explosive atmospheres, equipment repair overhaul reclamation, Ex Equipment, hazardous areas, flameproof, intrinsic safety, service facility requirements.
Frequently Asked Questions
EN IEC 60079-19:2025 is a standard published by CLC. Its full title is "Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation". This standard covers: 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.
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.
EN IEC 60079-19:2025 is classified under the following ICS (International Classification for Standards) categories: 29.260.20 - Electrical apparatus for explosive atmospheres. The ICS classification helps identify the subject area and facilitates finding related standards.
EN IEC 60079-19:2025 has the following relationships with other standards: It is inter standard links to EN IEC 60079-19:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN IEC 60079-19:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.
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
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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
...
SIST EN IEC 60079-19:2025 표준은 폭발성 대기에서 사용되는 Ex 장비의 수리, 오버홀 및 회수를 위한 기준을 제공하며, 폭발성 대기에 의해 발생하는 위험 요소를 다루는 데 중점을 둡니다. 이 표준의 범위는 서비스 시설에 적용되며, 안전한 작업 환경을 보장하기 위한 필수 요구 사항들을 제시합니다. 첫째, 표준의 강점은 Ex 장비의 오버홀 및 수리에 대한 명확한 지침을 제공한다는 점입니다. 이를 통해 사용자는 운영, 검사 및 유지보수 과정에서 발견된 결함을 효과적으로 개선할 수 있습니다. 둘째, 문서에서는 이 표준의 다섯 번째 개정판이 2019년에 발행된 네 번째 개정판을 대체하며, 기술적 수정 사항을 포함하고 있다는 점에서 신뢰성을 더합니다. 셋째, IEC 60079-19:2025는 구체적으로 커버되지 않는 항목들을 명확히 구분하여 사용자가 필요한 정보를 쉽게 찾을 수 있게 합니다. 이는 케이블 및 배선 시스템, 종류 보호 "m" 수리 또는 오버홀, Ex 구성 요소의 수리 및 오버홀에 대한 조언을 포함하지 않으며, 제조업체의 요구사항 또한 다루지 않습니다. 마지막으로, 해석 시트가 제공되어 사용자들이 문서의 해석을 지원받을 수 있다는 점도 주목할 만합니다. IEC 웹스토어를 통해 손쉽게 접근할 수 있는 해석 시트는 표준에 대한 이해도를 높이는 데 기여합니다. 이러한 모든 요소는 SIST EN IEC 60079-19:2025 표준이 현장에서의 안전 및 효율성을 증진시키기 위한 중요한 도구임을 입증합니다. 이 표준이 변경 사항을 명시적으로 다루고 있어 사용자들은 초기 운영과 유지보수에 있어 더 나은 결정을 내릴 수 있게 됩니다.
Die Norm EN IEC 60079-19:2025 regelt spezifische Aspekte der Instandhaltung, Reparatur und Wiederaufarbeitung von Ex-Ausrüstungen, die für gefährliche Bereiche mit explosiven Atmosphären konzipiert sind. Der Anwendungsbereich dieser Norm konzentriert sich ausschließlich auf Serviceeinrichtungen und berücksichtigt alle Faktoren, die mit der Überholung, Reparatur oder Rekultivierung verbunden sind, um Mängel zu beheben, die während des Betriebs, der Inspektion und Wartung festgestellt wurden. Eine der Stärken dieser Norm ist ihre detaillierte Ausrichtung auf die speziellen Anforderungen und Herausforderungen, die bei der Arbeit mit Ex-Ausrüstungen im Zusammenhang mit explosiven Atmosphären auftreten. Diese Norm bietet einen klaren Rahmen, um die Sicherheit und Effizienz bei der Instandhaltung von Ex-Ausrüstungen zu gewährleisten. Dies ist besonders relevant, da die Sicherheit in gefährlichen Bereichen von höchster Priorität ist und durch eine ordnungsgemäße Wartung und Reparatur von Ex-Ausrüstungen entscheidend verbessert werden kann. Die Überarbeitung in dieser fünften Auflage, die die vierte Auflage von 2019 ersetzt, stellt eine technische Revision dar, die wichtige Änderungen und Anpassungen in der Branche reflektiert. Anwender dieser Norm sollten sich der Möglichkeit bewusst sein, dass Interpretationsblätter zur Klärung der Normen veröffentlicht werden können, die auf der IEC-Website erhältlich sind und zusätzliche Einblicke in deren Anwendung geben. Darüber hinaus ist wichtig zu beachten, dass die Norm nicht alle Aspekte der Instandhaltung abdeckt. Sie enthält beispielsweise keine Empfehlungen zu Kabel- und Verdrahtungssystemen, die möglicherweise erneuert werden müssen, sowie keine Richtlinien zur Reparatur oder Überholung bestimmter Schutzarten und -komponenten. Dies ermöglicht es der Norm, sich auf ihre Kernkompetenzen zu konzentrieren und gleichzeitig die Verantwortlichkeiten der Hersteller von Ex-Ausrüstungen klar zu definieren. Insgesamt ist EN IEC 60079-19:2025 ein unverzichtbares Dokument für Fachleute, die in der Wartung von Ex-Ausrüstungen tätig sind. Es bietet nicht nur umfassende Richtlinien für die sichere Instandhaltung, sondern verbessert auch das Verständnis und die Anwendung von besten Praktiken im Umgang mit explosiven Atmosphären.
La norme SIST EN IEC 60079-19:2025 se concentre sur les atmosphères explosives et traite spécifiquement de l'équipement à réparer, rénover et récupérer dans des zones dangereuses. Cette norme est d'une importance cruciale car elle s'applique exclusivement aux installations de service dédiées à l'overhaul, à la réparation ou à la récupération de l'équipement Ex (Ex Equipment) conçu pour des atmosphères explosives. Elle présente l'avantage de fournir des directives claires pour la gestion des équipements dans des environnements à haut risque, contribuant ainsi à la sécurité des opérations industrielles. Les forces de cette norme résident dans sa couverture exhaustive des aspects techniques nécessaires pour la maintenance adéquate des équipements Ex. En traitant les insuffisances identifiées lors des opérations, inspections et maintenances, elle aide à garantir que l'équipement continue à fonctionner en toute sécurité. De plus, la norme ne s'étend pas à des conseils sur les systèmes de câblage ou de câbles qui pourraient nécessiter un renouvellement lors de la réinstallation de l'équipement, ce qui permet de maintenir un cadre spécifique et ciblé. La révision technique apportée par cette cinquième édition, qui remplace la quatrième édition de 2019, témoigne de l'engagement continu à mettre à jour les pratiques et à intégrer les leçons apprises de l'implémentation antérieure. Les utilisateurs de ce document doivent également noter qu'il est possible que des fiches d'interprétation soient publiées pour clarifier certaines dispositions de la norme. Cela renforce encore l'accessibilité et la compréhension des exigences, facilitant ainsi une meilleure mise en œuvre dans le secteur. En somme, la norme SIST EN IEC 60079-19:2025 est non seulement pertinente au sein de toutes les normes liées aux atmosphères explosives, mais elle offre également une structure solide pour la gestion des équipements must-have dans des environnements dangereux. Ses révisions et clarifications enrichissent la norme, garantissant qu'elle reste à jour face aux évolutions technologiques et réglementaires.
The EN IEC 60079-19:2025 standard is a pivotal document within the realm of explosive atmospheres, specifically targeting the overhaul, repair, and reclamation of Ex Equipment used in hazardous environments. Its scope is explicitly focused on service facilities that undertake these activities for equipment designed to operate in explosive atmospheres, thereby ensuring safety and compliance in industrial settings characterized by such hazards. One of the strengths of this standard lies in its comprehensive approach towards mitigating deficiencies identified during the operation, inspection, and maintenance of Ex Equipment. By detailing the necessary procedures and considerations for repair and reclamation, the standard not only bolsters operational safety but also aids in preserving the integrity and longevity of critical equipment. Moreover, the technical revision represented in this fifth edition highlights the evolving nature of safety practices and the importance of staying updated with industry standards. The delineation of what is not covered by the EN IEC 60079-19:2025, such as the advice on cable and wiring systems, repair or overhaul of Type of Protection "m," and requirements for manufacturers, is significant. This level of clarity helps users understand the precise applicability of the document and ensures that they seek out the appropriate guidelines for areas outside the scope of this standard. It also underscores the necessity of specialized knowledge when dealing with specific components and systems in hazardous locations. Furthermore, the introduction of interpretation sheets serves as an invaluable resource for users, aiding in the correct interpretation of the standard’s provisions. This accessibility of additional clarifications enhances the document's usability and relevance, as the evolving landscape of safety and technology demand ongoing learning and adaptation. Overall, the EN IEC 60079-19:2025 stands out as a vital standard for professionals involved in the maintenance and operation of Ex Equipment in explosive atmospheres. Its focused scope, strengths in safety promotion, and relevance in the continuously changing industrial safety context make it an essential reference for ensuring compliance and operational effectiveness.
SIST EN IEC 60079-19:2025は、危険場所における爆発性雰囲気に関連するEx機器の修理、オーバーホール、および再利用に特化した標準であり、従来の標準に比べて多くの強みと関連性を持っています。この標準は、特に爆発リスクをもたらす環境でのEx機器のメンテナンスを行うサービス施設に適用されることを明確にしています。 この標準の強みは、Ex機器のオーバーホール、修理、再利用に関する具体的な基準を提供することです。これにより、運用、検査、維持管理中に特定された欠陥を軽減するための指針が示されており、安全性の向上に寄与しています。また、この新しい版は、2019年に発行された第4版を置き換える形で発行されており、技術的な改訂が施されています。 SIST EN IEC 60079-19:2025は、Ex装置のオーバーホールや修理において重要な要素を包括している一方で、ケーブルや配線システムの交換など、他の重要な要因についてのアドバイスを含まないことも明示しています。この明確化は、ユーザーが取り扱う際の理解を深め、必要な手順を適切に認識できるようにしています。 新たにリリースされたこの標準には、IECウェブストアから入手できる解釈シートがあることも特筆すべき要素です。これにより、ユーザーは標準の解釈に関する詳細情報にアクセスでき、より正確な理解を促進します。 さらに、IEC 60079-19の第5版（2025年）と第4版（2019年）の間の変更点が前書きにリストされているため、ユーザーは改訂内容の重要性を把握し、必要な対応を考慮することができます。このように、SIST EN IEC 60079-19:2025は、爆発性雰囲気に関するEx機器のメンテナンスにおいて、確かな基準と中立的なガイドラインを提供する点で非常に関連性があります。
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