EN 60079-17:2007

SLOVENSKI STANDARD
01-januar-2008
1DGRPHãþD
SIST EN 60079-17:2003
SIST EN 61241-17:2005
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Explosive atmospheres -- Part 17: Electrical installations inspection and maintenance
Explosionsfähige Atmosphäre - Teil 17: Prüfung und Instandhaltung elektrischer Anlagen
Atmosphères explosives -- Partie 17: Inspection et entretien des installations électriques
Ta slovenski standard je istoveten z: EN 60079-17:2007
ICS:
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60079-17
NORME EUROPÉENNE
September 2007
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN 60079-17:2003 and EN 61241-17:2005
Incorporates corrigendum July 2008

English version
Explosive atmospheres -
Part 17: Electrical installations inspection and maintenance
(IEC 60079-17:2007)
Atmosphères explosives -  Explosionsfähige Atmosphäre -
Partie 17: Inspection et entretien Teil 17: Prüfung und Instandhaltung
des installations électriques elektrischer Anlagen
(CEI 60079-17:2007) (IEC 60079-17:2007)

This European Standard was approved by CENELEC on 2007-09-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-17:2007 E
Foreword
The text of document 31J/145/FDIS, future edition 4 of IEC 60079-17, 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 was approved by CENELEC as EN 60079-17 on
2007-09-01.
This European Standard supersedes EN 60079-17:2003 and 61241-17:2005.
The significant technical changes with respect to EN 60079-17:2003 are as follows:
– additional requirements for inspection and maintenance of electrical installations for combustible dusts
are included;
– knowledge, skills and competencies of "responsible persons", "technical persons with executive
function" and "operatives" are explained in new Annex B;
– Equipment Protection Levels (EPLs) have been introduced and are explained in the new Annex C.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-09-01
Annex ZA has been added by CENELEC.
The contents of the corrigendum of July 2008 have been included in this copy.
__________
Endorsement notice
The text of the International Standard IEC 60079-17:2007 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 60079-6 NOTE  Harmonized as EN 60079-6:2007 (not modified).
IEC 60079-7 NOTE  Harmonized as EN 60079-7:2007 (not modified).
IEC 60079-18 NOTE  Harmonized as EN 60079-18:2004 (not modified).
IEC 60079-26 NOTE  Harmonized as EN 60079-26:2007 (not modified).
IEC 60079-28 NOTE  Harmonized as EN 60079-28:2007 (not modified).
IEC 60204-1 NOTE  Harmonized as EN 60204-1:2006 (modified).
__________
- 3 - EN 60079-17:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1) 2)
IEC 60079-0 (mod) - Electrical apparatus for explosive gas EN 60079-0 2006
atmospheres -
Part 0: General requirements
1) 2)
IEC 60079-1 - Explosive atmospheres - EN 60079-1 2007
Part 1: Equipment protection by flameproof
enclosures "d"
1)
IEC 60079-2 - Explosive atmospheres - - -
Part 2: Equipment protection by pressurized
enclosure "p"
1) 2)
IEC 60079-7 - Explosive atmospheres - EN 60079-7 2007
Part 7: Equipment protection by Increased
safety "e"
1) 2)
IEC 60079-10 - Electrical apparatus for explosive gas EN 60079-10 2003
atmospheres -
Part 10: Classification of hazardous areas

1) 2)
IEC 60079-11 - Explosive atmospheres - EN 60079-11 2007
Part 11: Equipment protection by intrinsic
safety "i"
1) 2)
IEC 60079-14 - Electrical apparatus for explosive gas EN 60079-14 2003
atmospheres -
Part 14: Electrical installations in hazardous
areas (other than mines)
1) 2)
IEC 60079-15 - Electrical apparatus for explosive gas EN 60079-15 2005
atmospheres -
Part 15: Construction, test and marking of
type of protection "n" electrical apparatus

1) 2)
IEC 60079-19 - Explosive atmospheres - EN 60079-19 2007
Part 19: Equipment repair, overhaul and
reclamation
1) 2)
IEC 60364-6 (mod) - Low voltage electrical installations - HD 60364-6 2007
Part 6: Verification
IEC 61241 Series Electrical apparatus for use EN 61241 Series
in the presence of combustible dust

1) 2)
IEC 61241-1 - Electrical apparatus for use EN 61241-1 2004
in the presence of combustible dust - + corr. December 2006
Part 1: Protection by enclosures "tD"

1)
Undated reference.
2)
Valid edition at date of issue.

Publication Year Title EN/HD Year
1) 2)
IEC 61241-4 - Electrical apparatus for use EN 61241-4 2006
in the presence of combustible dust -
Part 4: Type of protection "pD"

1) 2)
IEC 61241-10 - Electrical apparatus for use EN 61241-10 2004
in the presence of combustible dust -
Part 10: Classification of areas where
combustible dusts are or may be present

1) 2)
IEC 61241-11 - Electrical apparatus for use EN 61241-11 2006
in the presence of combustible dust -
Part 11: Protection by intrinsic safety "iD"

IEC 61241-14 2004 Electrical apparatus for use EN 61241-14 2004
in the presence of combustible dust -
Part 14: Selection and installation

IEC 60079-17
Edition 4.0 2007-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Explosive atmospheres –
Part 17: Electrical installations inspection and maintenance

Atmosphères explosives –
Partie 17: Inspection et entretien des installations électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
W
CODE PRIX
ICS 29.260.20 ISBN 2-8318-9294-5

– 2 – 60079-17 © IEC:2007
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references .7
3 Terms and definitions .8
4 General requirements .10
4.1 Documentation .10
4.2 Qualification of personnel.10
4.3 Inspections.10
4.3.1 General .10
4.3.2 Grades of inspection.11
4.3.3 Types of inspection .11
4.4 Periodic inspections .12
4.4.1 Personnel .12
4.4.2 Fixed installations.12
4.4.3 Moveable equipment .12
4.5 Continuous supervision by skilled personnel .13
4.5.1 Concept.13
4.5.2 Objectives .13
4.5.3 Responsibilities .13
4.5.4 Frequency of inspection.14
4.5.5 Documents .14
4.5.6 Training .14
4.6 Maintenance requirements .15
4.6.1 Remedial measures and alterations to equipment.15
4.6.2 Maintenance of flexible cables.15
4.6.3 Withdrawal from service .15
4.6.4 Fastenings and tools .15
4.7 Environmental conditions .16
4.8 Isolation of equipment .16
4.8.1 Installations other than intrinsically safe circuits .16
4.8.2 Intrinsically safe installations .17
4.9 Earthing and equipotential bonding .18
4.10 Specific conditions of use.18
4.11 Movable equipment and its connections .18
4.12 Inspection schedules (Tables 1 to 4) .18
4.12.1 Equipment is appropriate to the EPL/zone requirements of the
location .18
4.12.2 Equipment group is correct.18
4.12.3 Equipment maximum surface temperature is correct.18
4.12.4 Equipment circuit identification .18
4.12.5 Cable gland .19
4.12.6 Type of cable is appropriate .19
4.12.7 Sealing .19
4.12.8 Fault loop impedance or earthing resistance.19

60079-17 © IEC:2007 – 3 –
4.12.9 Insulation resistance.19
4.12.10 Overload protection .19
5 Additional inspection schedule requirements .19
5.1 Type of protection "d" – Flameproof enclosure (see Table 1 and IEC 60079-1).19
5.1.1 Flameproof joints (see IEC 60079-1) .19
5.2 Type of protection "e" – Increased safety (see Table 1 and IEC 60079-7).20
5.2.1 Overloads.20
5.3 Type of pro
...