This Standard sets out both general and specific requirements for the inspection and maintenance of electrical equipment designed for use in areas classified as Group I hazardous areas.
Table of contents
Header
About this publication
Preface
Introduction
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
2 General requirements
2.1 Life cycle management
2.1.1 General
2.1.2 Requirements
2.2 Documentation
2.2.1 General
2.2.2 Verification dossier
2.2.3 Additional documentation
2.3 Competency
2.4 Inspections
2.4.1 General
2.4.2 Equipment maintenance system
2.5 Initial inspection requirements
2.5.1 General
2.5.2 Equipment from storage
2.6 Periodic inspection requirements
2.6.1 General
2.6.2 Frequency of inspection
2.6.3 Portable equipment
2.6.4 Fixed installations
2.6.5 Transportable and mobile equipment
2.7 Pre-overhaul audit requirements
2.7.1 General
2.7.2 Examination
2.7.3 Equipment not included in pre-overhaul audit
2.8 Overhaul requirements
2.9 Maintenance requirements
2.9.1 Repair and modifications to equipment
2.9.2 Maintenance of flexible cables entering enclosures
2.9.3 Repairs to in-service flameproof equipment
2.9.4 Withdrawal from service
2.9.5 Fastenings and tools
2.10 Environmental conditions
2.11 Intrinsically safe installations
2.11.1 General
2.11.2 Maintenance work in hazardous areas
2.11.3 Maintenance work in non-hazardous areas
2.12 Earthing and equipotential bonding
2.13 Specific conditions of use
2.14 General inspection requirements
2.14.1 General
2.14.2 Equipment appropriate to the requirements of the location
2.14.3 Equipment maximum surface temperature
2.14.4 Equipment circuit identification
2.14.5 Cable gland
2.14.6 Cables, plugs and couplers
2.14.7 Fault loop impedance or earthing resistance
2.14.8 Insulation resistance
2.14.9 Electrical protection devices
3 Specific inspection requirements
3.1 General
3.2 Type of protection “d” — Flameproof enclosure
3.2.1 Flameproof joints
3.2.2 Periodic inspection — External inspection
3.2.3 Periodic inspection — Internal inspection
3.2.4 Pre-overhaul audit
3.3 Type of protection “e” — Increased safety
3.3.1 General
3.3.2 Enclosures
3.3.3 Overloads
3.3.4 Replacement parts
3.3.5 Periodic inspection — External inspection
3.3.6 Periodic inspection — Internal inspection
3.4 Type of protection “i” — Intrinsic safety
3.4.1 General
3.4.2 Enclosures
3.4.3 Labelling
3.4.4 System configuration and entity parameters
3.4.5 Modifications
3.4.6 Replacement parts and attachments
3.4.7 Associated apparatus (safety interface) between intrinsically safe and non-intrinsically safe circuits
3.4.8 Cables
3.4.9 Cable screens
3.4.10 Point-to-point connections
3.4.11 Earth continuity
3.4.12 Intrinsically safe circuit earthing and insulation
3.4.13 Separation between intrinsically safe and non-intrinsically safe circuits
3.4.14 Inspection schedule
3.4.15 Prevention of resistive faults
3.4.16 Uninterruptible Power Supplies (UPS)
3.5 Type of protection “p” — Pressurized enclosure
3.6 Type of protection “m” — Encapsulation
3.7 Type of protection “o” — Oil-immersion
3.8 Type of protection “q” — Powder-filling
3.9 Type of protection “s” — Special protection
3.10 Explosion-protected caplights
Appendix A
Appendix B
Appendix C
C.1 Minimum requirements for a machine pre-overhaul audit report
C.2 Minimum requirements for an equipment pre-overhaul audit report
