EN 60079-17-2014 en Explosive atmospheres - Part 17 Electrical installations inspection and maintenance.pdf

1、BSI Standards PublicationExplosive atmospheresPart 17: Electrical installations inspection and maintenanceBS EN 60079-17:2014National forewordThis British Standard is the UK implementation of EN 60079-17:2014. It isidentical to IEC 60079-17:2013. It supersedes BS EN 60079-17:2007 which iswithdrawn.T

2、he UK participation in its preparation was entrusted by TechnicalCommittee EXL/31, Equipment for explosive atmospheres, to Sub-committee EXL/31/3, Codes of practice.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to i

3、nclude all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 80125 9ICS 13.230; 29.260.20Compliance with a British Standard cannot confer immunity fromlegal obligation

4、s.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60079-17:2014EUROPEAN STANDARD EN 60079-17 NORME EUROPENNE EUROPISCHE NORM March 2014 CENELEC

5、 European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2014 CENELEC - All rights of exploitation in any form and by any means reserved

6、 worldwide for CENELEC members. Ref. No. EN 60079-17:2014 E ICS 29.260.20 Supersedes EN 60079-17:2007 English version Explosive atmospheres - Part 17: Electrical installations inspection and maintenance (IEC 60079-17:2013) Atmosphres explosives - Partie 17: Inspection et entretien des installations

7、lectriques (CEI 60079-17:2013) Explosionsgefhrdete Bereiche - Teil 17: Prfung und Instandhaltung elektrischer Anlagen (IEC 60079-17:2013) This European Standard was approved by CENELEC on 2013-12-24. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the co

8、nditions 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

9、 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

10、 national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland

11、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60079-17:2014EN 60079-17:2014 - 2 - Foreword The text of document 31J/224/FDIS, future edition 5 of IEC 60079-17, prepared by SC 31J, Classification of hazardous areas and installation requireme

12、nts, of IEC TC 31, Equipment for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60079-17:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standar

13、d or by endorsement (dop) 2014-09-24 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-12-24 This document supersedes EN 60079-17:2007. EN 60079-17:2014 includes the following significant technical changes with respect to EN 60079-17:2007: Equi

14、pment specific inspection tables for luminaires, heating systems and motors have been added into Annex A to supplement the general protection concept tables. Document has been updated to complement the changes made to EN 60079-14 for initial inspection. Attention is drawn to the possibility that som

15、e of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60079-17:2013 was approved by CENELEC as a European Standard without a

16、ny modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60079-5 NOTE Harmonised as EN 60079-5. IEC 60079-6 NOTE Harmonised as EN 60079-6. IEC 60079-18 NOTE Harmonised as EN 60079-18. IEC 60079-26 NOTE Harmonised as EN 60079-26

17、. IEC 60079-28 NOTE Harmonised as EN 60079-28. IEC 60204-1 NOTE Harmonised as EN 60204-1. BS EN 60079-17:2014- 3 - EN 60079-17:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are

18、 normatively referenced in this document and are indispensable for its application. 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

19、 by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60079-0 - Explosive atmospheres - Part 0: Equipment - General requirements EN 60079-0 IEC 60079-1 - Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures “d“ EN 600

20、79-1 - IEC 60079-2 - Explosive atmospheres - Part 2: Equipment protection by pressurized enclosure “p“ EN 60079-2 - IEC 60079-7 Explosive atmospheres - Part 7: Equipment protection by increased safety “e“ EN 60079-7 IEC 60079-10-1 - Explosive atmospheres - Part 10-1: Classification of areas - Explos

21、ive gas atmospheres EN 60079-10-1 - IEC 60079-10-2 - Explosive atmospheres - Part 10-2: Classification of areas - Combustible dust atmospheres EN 60079-10-2 - IEC 60079-11 Explosive atmospheres - Part 11: Equipment protection by intrinsic safety “i“ EN 60079-11 - IEC 60079-14 - Explosive atmospheres

22、 - Part 14: Electrical installations design, selection and erection EN 60079-14 - IEC 60079-15 - Explosive atmospheres - Part 15: Equipment protection by type of protection “n“ EN 60079-15 - IEC 60079-19 - Explosive atmospheres - Part 19: Equipment repair, overhaul and reclamation EN 60079-19 - IEC

23、60079-31 - Explosive atmospheres - Part 31: Equipment dust ignition protection by enclosure “t“ EN 60079-31 - IEC 60364-6 - Low voltage electrical installations - Part 6: Verification HD 60364-6 - IEC 61241-4 - Electrical apparatus for use in the presence of combustible dust - Part 4: Type of protec

24、tion pD EN 61241-4 - BS EN 60079-17:2014 2 60079-17 IEC:2013 CONTENTS INTRODUCTION . 7 1 Scope 8 2 Normative references 8 3 Terms and definitions 9 4 General requirements 11 4.1 Documentation . 11 4.2 Qualification of personnel 11 4.3 Inspections 11 4.3.1 General 11 4.3.2 Grades of inspection . 12 4

25、.3.3 Types of inspection . 13 4.4 Periodic inspections . 13 4.4.1 Personnel . 13 4.4.2 Fixed installations . 13 4.4.3 Movable equipment. 14 4.5 Continuous supervision by skilled personnel 14 4.5.1 Concept 14 4.5.2 Objectives 14 4.5.3 Responsibilities 15 4.5.4 Frequency of inspection 15 4.5.5 Documen

26、ts . 16 4.5.6 Training 16 4.6 Maintenance requirements . 16 4.6.1 Remedial measures and alterations to equipment . 16 4.6.2 Maintenance of flexible cables 17 4.6.3 Withdrawal from service 17 4.6.4 Fastenings and tools. 17 4.7 Environmental conditions . 17 4.8 Isolation of equipment 18 4.8.1 Installa

27、tions other than intrinsically safe circuits . 18 4.8.2 Intrinsically safe installations live maintenance . 19 4.9 Earthing and equipotential bonding 20 4.10 Specific conditions of use 20 4.11 Movable equipment and its connections . 20 4.12 Inspection schedules (Tables 1 to 3) 20 4.12.1 General 20 4

28、.12.2 Equipment is appropriate to the EPL/zone requirements of the location . 20 4.12.3 Equipment group 20 4.12.4 Equipment maximum surface temperature 20 4.12.5 Equipment circuit identification . 20 4.12.6 Cable gland 21 4.12.7 Type of cable 21 4.12.8 Sealing . 21 BS EN 60079-17:201460079-17 IEC:20

29、13 3 4.12.9 Fault loop impedance or earthing resistance . 21 4.12.10 Insulation resistance . 21 4.12.11 Overload protection 21 4.12.12 Lamps and luminaires . 21 5 Additional inspection schedule requirements . 22 5.1 Type of protection “d” Flameproof enclosure (see Table 1 and IEC 60079-1) . 22 5.2 T

30、ype of protection “e” Increased safety (see Table 1 and IEC 60079-7) 22 5.3 Type of protection “i” Intrinsic safety (see Table 2 and IEC 60079-11) . 22 5.3.1 General 22 5.3.2 Documentation . 22 5.3.3 Labelling . 23 5.3.4 Unauthorized modifications . 23 5.3.5 Associated apparatus (safety interface) b

31、etween intrinsically safe and non-intrinsically safe circuits 23 5.3.6 Cables 23 5.3.7 Cable screens. 23 5.3.8 Point-to-point connections 23 5.3.9 Earth continuity of non-galvanically isolated circuits . 23 5.3.10 Earth connections to maintain the integrity of the intrinsic safety . 24 5.3.11 Intrin

32、sically safe circuit earthing and/or insulation . 24 5.3.12 Separation between intrinsically safe and non-intrinsically safe circuits 24 5.4 Type of protection “p” and “pD” Pressurized enclosure (see Table 3, IEC 60079-2 and IEC 61241-4) 24 5.5 Type of protection “n” (see Table 1 or 2 and IEC 60079-

33、15) . 24 5.5.1 General 24 5.5.2 Restricted breathing enclosures 25 5.6 Type of protection “t” and “tD” Protection by enclosure (see Table 1 and IEC 60079-31 and IEC 61241-1) 25 5.7 Types of protection “m” and “mD” (encapsulation), “o”, (oil-immersion) “op” (optical radiation) and “q” (powder-filling

34、) 25 6 Inspection tables . 25 Annex A (informative) Typical inspection procedure for periodic inspections 30 Annex B (normative) Knowledge, skills and competencies of responsible persons, technical persons with executive function and operatives 31 B.1 Scope 31 B.2 Knowledge and skills . 31 B.2.1 Res

35、ponsible persons and technical persons with executive function 31 B.2.2 Operative/technician (inspection and maintenance) 31 B.3 Competencies 32 B.3.1 General 32 B.3.2 Responsible persons and technical persons with executive function 32 B.3.3 Operative/technician . 32 B.4 Assessment . 32 Annex C (in

36、formative) Fitness-for-purpose assessment . 33 C.1 Background 33 BS EN 60079-17:2014 4 60079-17 IEC:2013 C.2 Need for a fitness-for-purpose assessment 33 C.3 Approach . 33 C.4 Ignition sources . 33 C.5 Contents of the fitness-for-purpose assessment . 33 C.5.1 General 33 C.5.2 Scope . 33 C.5.3 Equipm

37、ent and its application . 34 C.5.4 Description . 34 C.5.5 Function of the product including the location . 34 C.5.6 Specification . 34 C.5.7 Standards compliance 34 C.5.8 Documents . 35 C.5.9 Product sample . 35 C.5.10 Equipment label 35 C.5.11 Training of personnel 35 Annex D (informative) Example

38、of motor checks 36 Bibliography 37 Figure A.1 Typical inspection procedure for periodic inspections 30 Table 1 Inspection schedule for Ex “d”, Ex “e”, Ex “n” and Ex “t/tD” 25 Table 2 Inspection schedule for Ex “i” installations . 28 Table 3 Inspection schedule for Ex “p” and “pD” installations . 29

39、BS EN 60079-17:201460079-17 IEC:2013 7 INTRODUCTION Electrical installations in hazardous areas possess features specially designed to render them suitable for operations in such atmospheres. It is essential for reasons of safety in those areas that, throughout the life of such installations, the in

40、tegrity of those special features is preserved. This standard provides the details for initial inspection and on-going inspections as either; a) regular periodic inspections thereafter, or, b) continuous supervision by skilled personnel. When necessary, maintenance may also be needed. Correct functi

41、onal operation of hazardous area installations does not mean, and should not be interpreted as meaning, that the integrity of the special features referred to above is preserved. Inspections are carried out in accordance with this standard, however for older installations the details for the equipme

42、nt and installations requirements should be referenced to the standards applied at the date of the installation. NOTE Standards applied at the date of installation may not have been IEC standards. BS EN 60079-17:2014 8 60079-17 IEC:2013 EXPLOSIVE ATMOSPHERES Part 17: Electrical installations inspect

43、ion and maintenance 1 Scope This part of the IEC 60079 series applies to users and covers factors directly related to the inspection and maintenance of electrical installations within hazardous areas only, where the hazard may be caused by flammable gases, vapours, mists, dusts, fibres or flyings. I

44、t does not include: other fundamental installation and inspection requirements for electrical installations; the verification of electrical equipment; the repair and reclamation of explosion protected equipment (see IEC 60079-19). This standard supplements the requirements of IEC 60364-6. In the cas

45、e of dusts, fibres or flyings the level of housekeeping may influence the inspection and maintenance requirements. This standard is intended to be applied where there can be a risk due to the presence of explosive gas or dust mixtures with air or combustible dust layers under normal atmospheric cond

46、itions. It does not apply to: underground mining areas, dusts of explosives that do not require atmospheric oxygen for combustion, pyrophoric substances. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its app

47、lication. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60079-0, Explosive atmospheres - Part 0: Equipment - General requirements IEC 60079-1, Explosive atmospheres Part 1: Equipment

48、 protection by flameproof enclosures “d“ IEC 60079-2, Explosive atmospheres Part 2: Equipment protection by pressurized enclosures “p“ IEC 60079-7, Explosive atmospheres Part 7: Equipment protection by increased safety “e” IEC 60079-10-1, Explosive atmospheres Part 10-1: Classification of areas Expl

49、osive gas atmospheres IEC 60079-10-2, Explosive atmospheres Part 10-2: Classification of areas Combustible dust atmospheres BS EN 60079-17:201460079-17 IEC:2013 9 IEC 60079-11, Explosive atmospheres Part 11: Equipment protection by intrinsic safety “i“ IEC 60079-14, Explosive atmospheres Part 14: Electrical installations design, selection and erection IEC 60079-15, Explosive atmospheres Part 15: Equipment protection by type of protection “n“ IEC 60079-19, Explosive atmospheres