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AS/NZS 3800:2020
[Current]Electrical equipment for explosive atmospheres — Repair and overhaul (IEC 60079-19:2015 (ED. 3.1), MOD)
The objective of this Standard is to give instructions, principally of a technical nature, on the repair, overhaul, reclamation and modification of equipment designed for use in explosive atmospheres. It is not applicable to maintenance, other than when repair and overhaul cannot be disassociated from maintenance, neither does it give advice on cable entry systems, which may require a renewal when the equipment is re-installed. It prevents overhaul without manufacturer and certificate documentation to types of protection “i”, “m” and “s”. This Standard is based on the assumption that good engineering practices are adopted throughout.
Published: 08/05/2020
Pages: 110
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General
4.1 General principles
4.2 Statutory requirements for repair facility
4.3 Instructions for the user
4.3.1 Certificates and documents
4.3.2 Records and work instructions
4.3.3 Re-installation of repaired equipment
4.3.4 Repair facilities
4.4 Instructions for the repair facility
4.4.1 Repair and overhaul
4.4.1.1 General
4.4.1.2 Certificates and standards
4.4.1.3 Competency
4.4.1.4 Repair of components
4.4.1.5 Documentation
4.4.1.5.1 General
4.4.1.5.2 Job report to the user
4.4.1.5.3 Repair facility records
4.4.1.6 Spare parts
4.4.1.6.1 General
4.4.1.6.2 Fasteners
4.4.1.6.3 Sealed parts
4.4.1.7 Identification of repaired equipment
4.4.2 Reclamations
4.4.2.1 General
4.4.2.2 Exclusions
4.4.2.2.1 Requirements
4.4.2.2.2 General
4.4.2.2.3 Responsibilities
4.4.2.2.4 Reclamation procedures
4.4.2.2.5 General
4.4.2.2.6 Metal spraying
4.4.2.2.7 Electroplating
4.4.2.2.8 Sleeving
4.4.2.2.9 Brazing and welding
4.4.2.2.10 Metal stitching
4.4.2.2.11 Threaded holes for fasteners
4.4.2.2.12 Re-machining
4.4.3 Alterations and modifications
4.4.3.1 Alterations
4.4.3.2 Modifications
4.4.4 Temporary repairs
4.4.5 Rotating machinery
4.4.5.1 Removal of damaged windings
4.4.5.2 Additional requirements
4.4.5.3 Lubricants and corrosion inhibtors
4.4.6 Inverters
5 Additional requirements for the repair and overhaul of equipment with type of protection “d” (flameproof)
5.1 Application
5.2 Repair and overhaul
5.2.1 Enclosures
5.2.1.1 General
5.2.1.2 Over-pressure testing
5.2.2 Cable and conduit entries
5.2.3 Terminations
5.2.4 Insulation
5.2.5 Internal connections
5.2.6 Windings
5.2.6.1 General
5.2.6.2 Repair of rotating machine rotors
5.2.6.3 Testing after repair of windings
5.2.6.3.1 General
5.2.6.3.2 Rotating machines
5.2.6.4 Temperature sensors
5.2.6.4.1 Repaired windings
5.2.6.4.2 Overhaul
5.2.7 Auxiliary equipment
5.2.7.1 Flameproof brake units
5.2.7.2 Other auxiliary devices
5.2.8 Light-transmitting parts
5.2.9 Encapsulated parts
5.2.10 Batteries
5.2.11 Lamps
5.2.12 Lampholders
5.2.13 Ballasts
5.2.14 Breathing devices
5.3 Reclamation
5.3.1 General
5.3.2 Enclosures
5.3.2.1 Components
5.3.2.2 Flameproof joints
5.3.2.3 Threaded holes for fasteners
5.3.3 Sleeving
5.3.4 Shafts and housings
5.3.5 Sleeve bearings
5.3.6 Rotors and stators
5.4 Alterations and modifications
5.4.1 Enclosures
5.4.2 Cable or conduit entries
5.4.3 Terminations
5.4.4 Windings
5.4.5 Auxiliary equipment
6 Additional requirements for the repair and overhaul of equipment with type of protection “i” (intrinsic safety)
6.1 Application
6.2 Repair and overhaul
6.2.1 Enclosures
6.2.2 Cable glands
6.2.3 Terminations
6.2.4 Soldered connections
6.2.5 Fuses
6.2.6 Relays
6.2.7 Shunt diode safety barriers and galvanic isolators
6.2.8 Printed circuit boards
6.2.9 Optocouplers and piezoelectric components
6.2.10 Electrical components
6.2.11 Batteries
6.2.12 Internal wiring
6.2.13 Transformers
6.2.14 Encapsulated components
6.2.15 Non-electrical parts
6.2.16 Testing
6.3 Reclamation
6.4 Modifications
7 Additional requirements for the repair and overhaul of equipment with type of protection “p” (pressurized)
7.1 Application
7.2 Repair and overhaul
7.2.1 Enclosures
7.2.2 Cable and conduit entries
7.2.3 Terminations
7.2.4 Insulation
7.2.5 Internal connections
7.2.6 Windings
7.2.6.1 General
7.2.6.2 Repair of rotating machine rotors
7.2.6.3 Testing after repair of windings
7.2.6.3.1 General
7.2.6.3.2 Rotating machines
7.2.6.4 Temperature sensors
7.2.6.4.1 Repaired windings
7.2.6.4.2 Overhaul
7.2.7 Auxiliary devices
7.2.8 Light-transmitting parts
7.2.9 Encapsulated parts
7.2.10 Batteries
7.2.11 Lamps
7.2.12 Lampholders
7.2.13 Ballasts
7.3 Reclamation
7.3.1 General
7.3.2 Enclosures
7.3.2.1 General
7.3.2.2 Joints
7.3.3 Shafts and housings
7.3.4 Sleeve bearings
7.3.5 Rotors and stators
7.4 Alterations and modifications
7.4.1 Enclosures
7.4.2 Cable and conduit entries
7.4.3 Terminations
7.4.4 Windings
7.4.5 Auxiliary equipment
8 Additional requirements for the repair and overhaul of equipment with type of protection “e” (increased safety)
8.1 Application
8.2 Repair and overhaul
8.2.1 Enclosures
8.2.2 Cable or conduit entries
8.2.3 Terminations
8.2.4 Insulation
8.2.5 Internal connections
8.2.6 Windings
8.2.6.1 General
8.2.6.1.1 For machines with a rated voltage of 1 000 V or less; machines evaluated to IEC 60079-7:1969, 1990 or 2001:
8.2.6.1.2 For machines with a rated voltage of greater than 1 000 V; machines evaluated to IEC 60079-7:1990 or 2001:
8.2.6.2 Repair of rotating machine rotors
8.2.6.3 Testing after repair of windings
8.2.6.3.1 General
8.2.6.3.2 Rotating machines
8.2.6.4 Temperature sensors
8.2.6.4.1 Repaired windings
8.2.6.4.2 Overhaul
8.2.7 Light-transmitting parts
8.2.8 Encapsulated parts
8.2.9 Batteries
8.2.10 Lamps
8.2.11 Lampholders
8.2.12 Ballasts
8.2.13 Breathing devices
8.3 Reclamation
8.3.1 Enclosures
8.3.1.1 General
8.3.1.2 Joints
8.3.1.3 Shafts and housings
8.3.2 Sleeve bearings
8.3.3 Rotors and stators
8.4 Modifications
8.4.1 Enclosures
8.4.2 Cable and conduit entries
8.4.3 Terminations
8.4.4 Windings
8.4.5 Auxiliary equipment
9 Additional requirements for the repair and overhaul of equipment with type of protection “n”
9.1 Application
9.2 Repair and overhaul
9.2.1 Enclosures
9.2.2 Cable and conduit entries
9.2.3 Terminations
9.2.4 Insulation
9.2.5 Internal connections
9.2.6 Windings
9.2.6.1 General
9.2.6.2 Repair of rotating machine rotors
9.2.6.3 Testing after repair of windings
9.2.6.3.1 General
9.2.6.3.2 Rotating machines
9.2.6.4 Temperature sensors
9.2.6.4.1 Repaired windings
9.2.6.4.2 Overhaul
9.2.7 Light-transmitting parts
9.2.8 Encapsulated parts
9.2.9 Batteries
9.2.10 Lamps
9.2.11 Lamp holders
9.2.12 Ballasts
9.2.13 Enclosed break devices
9.2.14 Breathing devices
9.3 Reclamation
9.3.1 General
9.3.2 Enclosures
9.3.3 Joints
9.3.4 Shafts and housings
9.3.5 Sleeve bearings
9.3.6 Rotors and stators
9.4 Alterations and modifications
9.4.1 Enclosures
9.4.2 Cable and conduit entries
9.4.3 Terminations
9.4.4 Windings
9.4.5 Auxiliary equipment
10 Additional requirements for the repair and overhaul of equipment covered by IEC 60079-26
11 Additional requirements for the repair and overhaul of equipment with type of protection Group III ‘t’ (formerly known as ‘tD’ or DIP)
11.1 Application
11.2 Repair and overhaul
11.2.1 Enclosures
11.2.2 Cable and conduit entries
11.2.3 Terminations
11.2.4 Insulation
11.2.5 Internal connections
11.2.6 Windings
11.2.6.1 General
11.2.6.2 Repair of machine rotors
11.2.6.3 Testing after repair of windings
11.2.6.3.1 General
11.2.6.3.2 Rotating machines
11.2.6.4 Temperature sensors
11.2.6.4.1 Repaired windings
11.2.6.4.2 Overhaul
11.2.7 Light-transmitting parts
11.2.8 Batteries
11.2.9 Lamps
11.2.10 Lamp holders
11.2.11 Ballasts
11.2.12 Breathing devices
11.3 Reclamation
11.3.1 Enclosures
11.3.2 Joints
11.3.3 Shafts and housings
11.3.4 Sleeve bearings
11.3.5 Rotors and stators
11.4 Alterations and modifications
11.4.1 Enclosures
11.4.2 Cable and conduit entries
11.4.3 Windings
11.4.4 Auxiliary equipment
12 Additional requirements for the repair and overhaul of equipment with type of protection pressurization ‘pD’
12.1 Application
12.2 Repair and overhaul
12.3 Reclamation
12.4 Modifications
Annex A
A.1 Marking information
A.2 Symbols
A.2.1 In accordance with certificate documentation and/or manufacturer’s specification
A.2.2 In accordance with the type of protection standards but not the certificate documentation
A.2.3 Other situations
Annex B
B.1 Scope
B.2 Knowledge and skills
B.2.1 Responsible persons
B.2.2 Operatives
B.3 Competencies
B.3.1 General
B.3.2 Responsible persons
B.3.3 Operatives
B.4 Assessment
Annex C
C.1 General
Annex D
Appendix ZA
ZA.1 General
ZA.2 Background
ZA.3 Documentation requirements
ZA.4 Objectives
ZA.5 Conditions relating to certification of apparatus and systems
ZA.6 Repairs using soldering
ZA.6.1 General
ZA.6.2 Compatibility of soldering materials
ZA.7 Maintenance and verification of creepage and clearance
ZA.8 Operations identified in manufacturer’s instructions
Appendix ZB
Appendix ZC
ZC.1 General
ZC.2 Increased safety motors
ZC.3 Increased safety enclosures
ZC.4 Electrical equipment installed within increased safety enclosures
Appendix ZD
ZD.1 General
ZD.2 Overhaul of Ex “n” — Non-sparking enclosures
ZD.3 Overhaul of electrical equipment installed within Ex “n” non-sparking enclosures
Appendix ZE
ZE.1 Overhaul of Ex “t” (DIP) motors
ZE.2 Overhaul of Ex “t” (DIP) enclosures
ZE.3 Overhaul of Ex “t” (DIP) electrical equipment installed within Ex “t” (DIP) enclosures
Appendix ZF
ZF.1 General
ZF.2 Work procedures
ZF.3 Competency training and assessment
ZF.4 Prerequisites for repair and overhaul
ZF.5 Replacement parts
ZF.6 Brazing and welding
ZF.7 Metal stitching
ZF.8 Temporary repairs
ZF.9 Omissions of tests
ZF.10 Conditions for equipment release
Appendix ZG
ZG.1 General
Appendix ZH
ZH.1 General
ZH.2 Isolators and circuit interrupters
ZH.3 Interlocks and mechanical linkages
ZH.4 Earth fault devices
ZH.5 Other devices
ZH.6 Transformers
Bibliography
Amendment control sheet
Cited references in this standard
[Current]
Metallic and other inorganic coatings - Electrodeposited coatings of chromium for engineering purposes
[Superseded]
Electrical apparatus for use in the presence of combustible dust - Part 4: Type of protection "pD"
[Withdrawn]
Corrigendum 1 — Electrical apparatus for use in the presence of combustible dust — Part 0: General requirements
Content history
[Current]
[Superseded]
[Superseded]
DR2 AS/NZS 3800:2019
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