EN IEC 60079-19:2019

SLOVENSKI STANDARD
01-junij-2020
Nadomešča:
SIST EN 60079-19:2011
SIST EN 60079-19:2011/A1:2015
Eksplozivne atmosfere - 19. del: Popravilo, obnova in remont opreme (IEC 60079-
19:2019)
Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation (IEC
60079-19:2019)
Explosionsgefährdete Bereiche - Teil 19: Gerätereparatur, Überholung und
Regenerierung (IEC 60079-19:2019)
Atmosphères explosives - Partie 19: Réparation, révision et remise en état de l'appareil
(IEC 60079-19:2019)
Ta slovenski standard je istoveten z: EN IEC 60079-19:2019
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
December 2019
ICS 29.260.20 Supersedes EN 60079-19:2011 and all of its
amendments and corrigenda (if any)
English Version
Explosive atmospheres - Part 19: Equipment repair, overhaul
and reclamation
(IEC 60079-19:2019)
Atmosphères explosives - Partie 19: Réparation, révision et Explosionsgefährdete Bereiche - Teil 19: Gerätereparatur,
remise en état de l'appareil Überholung und Regenerierung
(IEC 60079-19:2019) (IEC 60079-19:2019)
This European Standard was approved by CENELEC on 2019-11-22. 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,
Turkey 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60079-19:2019 E

European foreword
The text of document 31J/295/FDIS, future edition 4 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 60079-19:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-08-22
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-11-22
document have to be withdrawn
This document supersedes EN 60079-19:2011 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.

Endorsement notice
The text of the International Standard IEC 60079-19:2019 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 standards
indicated:
IEC 60034 (series) NOTE Harmonized as EN 60034 (series)
IEC 60079-17 NOTE Harmonized as EN 60079-17
IEC 60079-18 NOTE Harmonized as EN 60079-18
IEC 60079-33 NOTE Harmonized as CLC/TR 60079-33
IEC 60364 (series) NOTE Harmonized as HD 60364 (series)
ISO 4063 NOTE Harmonized as EN ISO 4063
ISO 9000 NOTE Harmonized as EN ISO 9000
ISO 9001 NOTE Harmonized as EN ISO 9001
ISO/IEC 17000 NOTE Harmonized as EN ISO/IEC 17000
ISO/IEC 17024 NOTE Harmonized as EN ISO/IEC 17024
ISO/IEC 80079-34 NOTE Harmonized 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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60034-23 -  Rotating electrical machines - Part 23: EN IEC 60034-23 -
Repair, overhaul and reclamation
IEC 60079-0 2017 Explosive atmospheres - Part 0: EN IEC 60079-0 2018
Equipment - General requirements
IEC 60079-1 -  Explosive atmospheres - Part 1: EN 60079-1 -
Equipment protection by flameproof
enclosures "d"
IEC 60079-2 -  Explosive atmospheres - Part 2: EN 60079-2 -
Equipment protection by pressurized
enclosure "p"
IEC 60079-6 -  Explosive atmospheres - Part 6: EN 60079-6 -
Equipment protection by liquid immersion
"o"
IEC 60079-7 -  Explosive atmospheres - Part 7: EN 60079-7 -
Equipment protection by increased safety
"e"
IEC 60079-11 2011 Explosive atmospheres - Part 11: EN 60079-11 2012
Equipment protection by intrinsic safety "i"
IEC 60079-14 -  Explosive atmospheres - Part 14: Electrical EN 60079-14 -
installations design, selection and erection
IEC 60079-15 -  Explosive atmospheres – Part 15: EN IEC 60079-15 -
Equipment protection by type of protection
"n"
IEC 60079-26 -  Explosive atmospheres - Part 26: EN 60079-26 -
Equipment with Equipment Protection
Level (EPL) Ga
IEC/IEEE 60079-30--  Explosive atmospheres - Part 30-1: EN 60079-30-1 -
1 Electrical resistance trace heating -
General and testing requirements
Publication Year Title EN/HD Year
IEC/IEEE 60079-30--  Explosive atmospheres - Part 30-2: EN 60079-30-2 -
2 Electrical resistance trace heating -
Application guide for design, installation
and maintenance
IEC 60079-31 -  Explosive atmospheres - Part 31: EN 60079-31 -
Equipment dust ignition protection by
enclosure "t"
IEC 60085 -  Electrical insulation - Thermal evaluation EN 60085 -
and designation
IEC 60529 -  Degrees of protection provided by - -
enclosures (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 4526 -  Metallic coatings_- Electroplated coatings EN ISO 4526 -
of nickel for engineering purposes
Metallic coatings – Electrodeposited
ISO 6158 -  EN ISO 6158 -
coatings of chromium for engineering
purposes
IEC 60079-19 ®
Edition 4.0 2019-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Explosive atmospheres –
Part 19: Equipment repair, overhaul and reclamation

Atmosphères explosives –
Partie 19: Réparation, révision et remise en état de l’appareil

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.260.20 ISBN 978-2-8322-7527-6

– 2 – IEC 60079-19:2019  IEC 2019
CONTENTS
FOREWORD . 8
INTRODUCTION . 13
1 Scope . 14
2 Normative references . 14
3 Terms and definitions . 15
4 General . 20
4.1 General principles . 20
4.2 Instructions for the user . 20
4.2.1 Ex Equipment Certificates and schedule drawings . 20
4.2.2 Records and work instructions . 21
4.2.3 Re-installation of repaired equipment. 21
4.2.4 Service facilities . 21
4.3 Instructions for the service facility . 21
4.3.1 Statutory requirements . 21
4.3.2 Repair and overhaul . 21
4.3.3 Reclamations . 26
4.3.4 Alterations and modifications . 29
4.3.5 Temporary repairs . 30
4.3.6 Electric machines . 30
4.3.7 Control equipment . 32
5 Additional requirements for the repair and overhaul of equipment with Type of
Protection "d" . 32
5.1 Application . 32
5.2 Repair and overhaul . 33
5.2.1 Enclosures . 33
5.2.2 Water jackets . 34
5.2.3 Entries into enclosures . 34
5.2.4 Terminations . 34
5.2.5 Insulation . 34
5.2.6 Internal connections . 34
5.2.7 Electric machines . 34
5.2.8 Auxiliary equipment . 35
5.3 Reclamation . 36
5.3.1 General . 36
5.3.2 Enclosures . 36
5.3.3 Sleeving . 38
5.3.4 Shafts and housings . 38
5.3.5 Sleeve bearings . 38
5.3.6 Rotors and stators . 38
5.4 Alterations and modifications . 38
5.4.1 Enclosures . 38
5.4.2 Entries into enclosures . 38
5.4.3 Terminations . 39
5.4.4 Windings . 39
5.4.5 Auxiliary equipment . 39

IEC 60079-19:2019  IEC 2019 – 3 –
6 Additional requirements for the repair and overhaul of equipment with Type of
Protection "i" . 39
6.1 Application . 39
6.2 Repair and overhaul . 40
6.2.1 Enclosures . 40
6.2.2 Cable glands . 40
6.2.3 Terminations . 40
6.2.4 Soldered connections . 40
6.2.5 Fuses . 41
6.2.6 Relays . 41
6.2.7 Shunt diode safety barriers and galvanic isolators . 41
6.2.8 Printed circuit boards . 41
6.2.9 Optocouplers and piezoelectric components . 42
6.2.10 Electrical components . 42
6.2.11 Batteries . 42
6.2.12 Internal wiring . 42
6.2.13 Transformers . 43
6.2.14 Encapsulated components . 43
6.2.15 Non-electrical parts . 43
6.2.16 Testing . 43
6.3 Reclamation . 43
6.4 Modifications. 43
7 Additional requirements for the repair and overhaul of equipment with Type of
Protection "p" . 43
7.1 Application . 43
7.2 Repair and overhaul . 44
7.2.1 Enclosures . 44
7.2.2 Entries into enclosures . 44
7.2.3 Terminations . 44
7.2.4 Insulation . 44
7.2.5 Internal connections . 44
7.2.6 Electric machines . 45
7.2.7 Auxiliary devices . 46
7.2.8 Light-transmitting parts . 46
7.2.9 Encapsulated parts . 46
7.2.10 Batteries . 46
7.2.11 Lamps . 46
7.2.12 Lampholders . 46
7.2.13 Ballasts . 46
7.3 Reclamation . 46
7.3.1 General . 46
7.3.2 Enclosures . 46
7.3.3 Shafts and housings . 47
7.3.4 Sleeve bearings . 47
7.3.5 Rotors and stators . 47
7.4 Alterations and modifications . 47
7.4.1 Enclosures . 47
7.4.2 Entries into enclosures . 47
7.4.3 Terminations . 47

– 4 – IEC 60079-19:2019  IEC 2019
7.4.4 Windings . 48
7.4.5 Auxiliary equipment . 48
7.5 Pressurization system . 48
8 Additional requirements for the repair and overhaul of equipment with Type of
Protection "e" . 48
8.1 Application . 48
8.2 Repair and overhaul . 49
8.2.1 Enclosures . 49
8.2.2 Entries into enclosures . 49
8.2.3 Terminations . 49
8.2.4 Insulation . 49
8.2.5 Internal connections . 49
8.2.6 Electric machines . 50
8.2.7 Light-transmitting parts . 52
8.2.8 Encapsulated parts . 52
8.2.9 Batteries . 53
8.2.10 Lamps . 53
8.2.11 Lampholders . 53
8.2.12 Ballasts . 53
8.2.13 Breathing devices . 53
8.3 Reclamation . 53
8.3.1 General . 53
8.3.2 Enclosures . 53
8.3.3 Sleeve bearings . 54
8.3.4 Rotors and stators . 54
8.4 Alterations and modifications . 54
8.4.1 Enclosures . 54
8.4.2 Entries into enclosures . 54
8.4.3 Terminations . 54
8.4.4 Windings . 54
8.4.5 Auxiliary equipment . 55
9 Additional requirements for the repair and overhaul of equipment with Type of
Protection "n" . 55
9.1 Application . 55
9.2 Repair and overhaul . 55
9.2.1 Enclosures . 55
9.2.2 Entries into enclosures . 55
9.2.3 Terminations . 56
9.2.4 Insulation . 56
9.2.5 Internal connections . 56
9.2.6 Electric machines . 56
9.2.7 Light-transmitting parts . 58
9.2.8 Encapsulated parts . 58
9.2.9 Batteries . 59
9.2.10 Lamps . 59
9.2.11 Lampholders . 59
9.2.12 Ballasts . 59
9.2.13 Enclosed break devices . 59
9.2.14 Breathing devices . 59

IEC 60079-19:2019  IEC 2019 – 5 –
9.3 Reclamation . 59
9.3.1 General . 59
9.3.2 Enclosures . 59
9.3.3 Joints . 59
9.3.4 Shafts and housings . 60
9.3.5 Sleeve bearings . 60
9.3.6 Rotors and stators . 60
9.4 Alterations and modifications . 60
9.4.1 Enclosures . 60
9.4.2 Entries into enclosures . 60
9.4.3 Terminations . 60
9.4.4 Windings . 60
9.4.5 Auxiliary equipment . 61
10 Additional requirements for the repair and overhaul of equipment covered by
IEC 60079-26 . 61
11 Additional requirements for the repair and overhaul of equipment with Type of
Protection “t” (formerly “tD” or DIP) . 61
11.1 Application . 61
11.2 Repair and overhaul . 61
11.2.1 Enclosures . 61
11.2.2 Entries into enclosures . 62
11.2.3 Terminations . 62
11.2.4 Insulation . 62
11.2.5 Internal connections . 62
11.2.6 Electric machines . 62
11.2.7 Light-transmitting parts . 63
11.2.8 Batteries . 63
11.2.9 Lamps . 63
11.2.10 Lamp holders . 64
11.2.11 Ballasts . 64
11.2.12 Breathing devices . 64
11.3 Reclamation . 64
11.3.1 General . 64
11.3.2 Enclosures . 64
11.3.3 Joints . 64
11.3.4 Shafts and housings . 64
11.3.5 Sleeve bearings . 65
11.3.6 Rotors and stators . 65
11.4 Alterations and modifications . 65
11.4.1 Enclosures . 65
11.4.2 Entries into enclosures . 65
11.4.3 Windings . 65
11.4.4 Auxiliary equipment . 65
12 Requirements for the repair and overhaul of equipment with Type of
Protection ”o”. 65
12.1 Application . 65
12.2 Repair and overhaul . 66
12.2.1 Associated Types of Protection . 66
12.2.2 Removal of protective liquid . 66

– 6 – IEC 60079-19:2019  IEC 2019
12.2.3 Replacement of components . 66
12.2.4 Preparation for replacing protective liquid . 66
12.2.5 Protective liquid . 66
12.2.6 Closure of container . 66
12.3 Reclamation . 66
12.4 Modifications. 67
13 Requirements for the repair and overhaul of equipment with Type of Protection “q” . 67
13.1 Application . 67
13.2 Repair and overhaul . 67
13.2.1 Associated Types of Protection . 67
13.2.2 Removal of protective materials . 67
13.2.3 Replacement of components . 67
13.2.4 Preparation for replacing protective materials . 67
13.2.5 Protective materials . 67
13.2.6 Closure of container . 67
13.3 Reclamation . 68
13.4 Modifications. 68
14 Requirements for the repair and overhaul of equipment with Type of Protection “s” . 68
15 Electrical resistance trace heating . 68
Annex A (normative) Identification of repaired equipment by marking . 69
A.1 Marking information . 69
A.2 Symbols . 69
A.2.1 Repair in accordance with schedule drawings or manufacturer’s
specification . 69
A.2.2 Repair in accordance with the Type of Protection standards but not the
schedule drawings . 69
A.2.3 Other situations . 70
Annex B (normative) Knowledge, skills and competence of responsible persons and
operatives . 71
B.1 General . 71
B.2 Knowledge and skills . 71
B.2.1 Responsible persons . 71
B.2.2 Operatives . 71
B.3 Competence . 71
B.3.1 General . 71
B.3.2 Responsible persons . 72
B.3.3 Operatives . 72
B.4 Assessment . 72
B.5 Qualification of reclamation operatives . 72
Annex C (normative) Requirements for measurements in flameproof equipment during
overhaul, repair and reclamation (including guidance on tolerances) . 73
Annex D (informative) Evaluation of best practice during rewinding and repair . 76
Annex E (informative) Additional requirements relating to Ex control equipment . 77
E.1 General . 77
E.2 Common items . 77
E.3 Isolators and circuit interrupters . 77
E.4 Interlocks and mechanical linkages . 78
E.5 Earth fault devices . 78
E.6 Other devices . 78

IEC 60079-19:2019  IEC 2019 – 7 –
E.7 Transformers . 78
Bibliography . 80

Figure A.1 – Repair in accordance with IEC 60079-19 and schedule drawings or
manufacturer's specification . 69
Figure A.2 – Repair in accordance with the Type of Protection standards but with
insufficient evidence of full compliance with the schedule drawings . 70
Figure C.1 – Determination of maximum gap of reclaimed parts . 75

Table C.1 – Determination of maximum gap of reclaimed parts . 73

– 8 – IEC 60079-19:2019  IEC 2019
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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard 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.
This fourth edition cancels and replaces the third edition published in 2010 together with
Amendment 1:2015. This edition constitutes a technical revision.
The significance of the changes between IEC 60079-19, Edition 3 (2010), including
Amendment 1 (2015), and IEC 60079-19, Edition 4 (2019) are as listed below:

IEC 60079-19:2019  IEC 2019 – 9 –
Type
Explanation of the significance of the changes Clause Minor and Extension Major
editorial technical
changes changes
Relationship between IEC 60034-23 and IEC 60079-19 Introduction X
Document applicable to Type(s) of Protection “o” and “q” 1 X
Standard for electrical resistance trace heating added 2 X
Terms “repair facility” and “service facility” are considered
3 to 15 X
equivalent. Changed “repair facility” to “service facility”
Terms and definitions aligned alphabetically 3 X
Clarification of definition “certificate” 3.2 X
Addition of definition “Component Certificate” 3.2.1 X
Addition of definition “Ex Equipment Certificate” 3.2.2 X
Addition of definition “schedule drawing” 3.2.3 X
Change in terms used from “certificate documents” to 4
X
“schedule drawing”
Annex E
Change in terms used from “certificate documents” to “Ex
4.2.1 X
Equipment Certificates” and “schedule drawings”
Change in terms used from “motor”, “rotating machine”,
...