BS EN 60079-17:2014
$167.15
Explosive atmospheres – Electrical installations inspection and maintenance
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 42 |
IEC 60079-17:2013 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. It 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 case 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 conditions. It does not apply to: – underground mining areas, – dusts of explosives that do not require atmospheric oxygen for combustion, – pyrophoric substances. This fifth edition cancels and replaces the fourth edition published in 2007 and constitutes a technical revision. The significant technical changes with respect to the previous edition are as follows: – Equipment 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 IEC 60079-14 for initial inspection. Keywords: inspection and maintenance of electrical installations within hazardous area, flammable gases, vapours, mists, dusts, fibres or flyings This publication is to be read in conjunction with /2.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 9 | INTRODUCTION |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms and definitions |
| 13 | 4 General requirements 4.1 Documentation 4.2 Qualification of personnel 4.3 Inspections 4.3.1 General |
| 14 | 4.3.2 Grades of inspection |
| 15 | 4.3.3 Types of inspection 4.4 Periodic inspections 4.4.1 Personnel 4.4.2 Fixed installations |
| 16 | 4.4.3 Movable equipment 4.5 Continuous supervision by skilled personnel 4.5.1 Concept 4.5.2 Objectives |
| 17 | 4.5.3 Responsibilities 4.5.4 Frequency of inspection |
| 18 | 4.5.5 Documents 4.5.6 Training 4.6 Maintenance requirements 4.6.1 Remedial measures and alterations to equipment |
| 19 | 4.6.2 Maintenance of flexible cables 4.6.3 Withdrawal from service 4.6.4 Fastenings and tools 4.7 Environmental conditions |
| 20 | 4.8 Isolation of equipment 4.8.1 Installations other than intrinsically safe circuits |
| 21 | 4.8.2 Intrinsically safe installations live maintenance |
| 22 | 4.9 Earthing and equipotential bonding 4.10 Specific conditions of use 4.11 Movable equipment and its connections 4.12 Inspection schedules (Tables 1 to 3) 4.12.1 General 4.12.2 Equipment is appropriate to the EPL/zone requirements of the location 4.12.3 Equipment group 4.12.4 Equipment maximum surface temperature 4.12.5 Equipment circuit identification |
| 23 | 4.12.6 Cable gland 4.12.7 Type of cable 4.12.8 Sealing 4.12.9 Fault loop impedance or earthing resistance 4.12.10 Insulation resistance 4.12.11 Overload protection 4.12.12 Lamps and luminaires |
| 24 | 5 Additional inspection schedule requirements 5.1 Type of protection “d” – Flameproof enclosure (see Table 1 and IEC 60079-1) 5.2 Type of protection “e” – Increased safety (see Table 1 and IEC 60079-7) 5.3 Type of protection “i” – Intrinsic safety (see Table 2 and IEC 60079-11) 5.3.1 General 5.3.2 Documentation |
| 25 | 5.3.3 Labelling 5.3.4 Unauthorized modifications 5.3.5 Associated apparatus (safety interface) between intrinsically safe and non-intrinsically safe circuits 5.3.6 Cables 5.3.7 Cable screens 5.3.8 Point-to-point connections 5.3.9 Earth continuity of non-galvanically isolated circuits |
| 26 | 5.3.10 Earth connections to maintain the integrity of the intrinsic safety 5.3.11 Intrinsically safe circuit earthing and/or insulation 5.3.12 Separation between intrinsically safe and non-intrinsically safe circuits 5.4 Type of protection “p” and “pD” – Pressurized enclosure (see Table 3, IEC 600792 and IEC 61241-4) 5.5 Type of protection “n” (see Table 1 or 2 and IEC 60079-15) 5.5.1 General |
| 27 | 5.5.2 Restricted breathing enclosures 5.6 Type of protection “t” and “tD” – Protection by enclosure (see Table 1 and IEC 60079-31 and IEC 61241-1) 5.7 Types of protection “m” and “mD” (encapsulation), “o”, (oil-immersion) “op” (optical radiation) and “q” (powder-filling) 6 Inspection tables Table 1 – Inspection schedule for Ex “d”, Ex “e”, Ex “n” and Ex “t/tD” |
| 30 | Table 2 – Inspection schedule for Ex “i” installations |
| 31 | Table 3 – Inspection schedule for Ex “p” and “pD” installations |
| 32 | Annex A (informative)Typical inspection procedure for periodic inspections Figure A.1 – Typical inspection procedure for periodic inspections |
| 33 | Annex B (normative)Knowledge, skills and competencies of responsible persons,technical persons with executive function and operatives B.1 Scope B.2 Knowledge and skills B.2.1 Responsible persons and technical persons with executive function B.2.2 Operative/technician (inspection and maintenance) |
| 34 | B.3 Competencies B.3.1 General B.3.2 Responsible persons and technical persons with executive function B.3.3 Operative/technician B.4 Assessment |
| 35 | Annex C (informative)Fitness-for-purpose assessment C.1 Background C.2 Need for a fitness-for-purpose assessment C.3 Approach C.4 Ignition sources C.5 Contents of the fitness-for-purpose assessment C.5.1 General C.5.2 Scope |
| 36 | C.5.3 Equipment and its application C.5.4 Description C.5.5 Function of the product including the location C.5.6 Specification C.5.7 Standards compliance |
| 37 | C.5.8 Documents C.5.9 Product sample C.5.10 Equipment label C.5.11 Training of personnel |
| 38 | Annex D (informative)Example of motor checks |
| 39 | Bibliography |
