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  • HB 239:2011

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    Guidance on the repair and overhaul of electrical equipment for explosive atmospheres

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Withdrawn date:  23-06-2022

    Language(s):  English

    Published date:  19-07-2011

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    1 - HB 239:2011 GUIDANCE ON THE REPAIR AND OVERHAUL OF ELECTRICAL EQUIPMENT FOR EXPLOSIVE ATMOSPHERES
    4 - PREFACE
    5 - CONTENTS
    9 - SECTION 1 GENERAL
    9 - 1.1 SCOPE
    9 - 1.2 REFERENCED DOCUMENTS
    11 - SECTION 2 DEFINITIONS
    11 - 2.1 GENERAL
    11 - 2.2 ADDITIONAL DEFINITIONS
    11 - 2.2.1 Verification Dossier
    11 - 2.2.2 Metal spray (also known as thermal spray)
    11 - 2.2.3 Laser welding
    11 - 2.2.4 Solder
    11 - 2.2.5 Controlled temperature burn-out
    11 - 2.2.6 Final inspection
    11 - 2.2.7 Competent person
    12 - 2.2.8 Special processes
    13 - SECTION 3 TECHNICAL PRINCIPLES AND PROCESSES
    13 - 3.1 INTRODUCTION
    13 - 3.2 BACKGROUND
    13 - 3.3 COMPETENCIES
    14 - 3.4 SERVICE FACILITY RELATIONSHIPS WITH THE EXPLOSION-PROTECTED EQUIPMENT OWNER/OPERATOR
    15 - 3.5 CONSULTATION WITH OTHER PARTIES: MANUFACTURERS AND REGULATORS
    15 - 3.6 DOCUMENTATION-VERIFICATION DOSSIER
    16 - 3.7 TRANSITION OF STANDARDS
    18 - 3.8 SELECTION OF SERVICE FACILITY
    18 - 3.9 SERVICE FACILITY CAPABILITIES
    19 - 3.10 WORK FLOW
    19 - 3.10.1 Overview
    21 - 3.10.2 Initial inspection
    21 - 3.10.3 Failure analysis
    21 - 3.10.4 Determination of conformity
    21 - 3.10.5 Determination of pass/fail criteria
    21 - 3.10.6 Exceptional circumstances
    22 - 3.10.7 Resolution of Scope of Works
    25 - 3.10.8 Changes to equipment
    26 - 3.10.9 Repair
    26 - 3.10.10 Verification of repair
    27 - 3.10.11 Justification for the omission of verification tests
    27 - 3.10.12 Final inspection
    27 - 3.10.13 Equipment compliance reporting
    28 - 3.10.14 Equipment compliance labelling
    29 - 3.10.15 Pre-delivery inspection
    29 - 3.11 COMMENTARY ON MATERIALS
    29 - 3.11.1 Introduction
    30 - 3.11.2 Aluminium and light alloys
    30 - 3.11.3 Cast irons
    30 - 3.11.4 Corrosion inhibitors (‘grease’) and their application
    31 - 3.11.5 Insulation materials
    31 - 3.11.6 Plastics and rubber
    32 - 3.12 COMMENTARY ON INSPECTION TECHNIQUES
    32 - 3.12.1 General
    32 - 3.12.2 Mechanical inspection techniques and equipment
    33 - 3.12.3 Electronic inspection techniques
    33 - 3.13 MECHANICAL REPAIR PROCESSES
    33 - 3.13.1 General
    34 - 3.13.2 Welding
    36 - 3.13.3 Metal spraying
    36 - 3.13.4 Sleeving
    36 - 3.13.5 Thread repair
    37 - 3.13.6 Bolt fit-Fixing bolts, studs and nuts
    38 - 3.13.7 Distortion repair
    39 - SECTION 4 GENERIC TESTING PROCESSES FOR VERIFICATION OF EXPLOSION-PROTECTION TECHNIQUES
    39 - 4.1 NON-DESTRUCTIVE TEST (NDT)
    39 - 4.2 DIELECTRIC WITHSTAND (HIGH POTENTIAL OR HI-POT) TESTING
    39 - 4.2.1 General
    40 - 4.2.2 Hi-pot (high voltage, line frequency or Dielectric Withstand) test
    41 - 4.3 INSULATION RESISTANCE
    41 - 4.4 COMPONENT TESTING
    41 - 4.4.1 Circuit breakers
    41 - 4.4.2 Overloads
    41 - 4.4.3 Current transformers
    42 - 4.5 TEMPERATURE MEASUREMENT
    43 - SECTION 5 OVERHAUL OF ROTATING MACHINES
    43 - 5.1 GENERAL
    43 - 5.2 REPAIR/OVERHAUL
    44 - 5.3 OWNER/OPERATOR RESPONSIBILITIES
    44 - 5.4 QUALITY-MANAGED ASSESSMENT STRATEGIES
    45 - 5.5 EVALUATION PROCEDURES FOR ROTATING MACHINES
    45 - 5.5.1 General
    45 - 5.5.2 Before power shutdown (typically for large machines only, i.e. ≥1 MW
    46 - 5.5.3 After shutdown
    46 - 5.5.4 Before dismantling
    48 - 5.5.5 Rewinding
    48 - 5.5.6 Removal of windings
    48 - 5.5.7 Before winding
    49 - 5.6 ADDITIONAL NOTES FOR COPY WINDING
    49 - 5.7 AFTER WINDING
    50 - 5.8 REPAIR OF ROTORS
    50 - 5.9 TEMPERATURE SENSORS
    50 - 5.10 ENCLOSURES
    51 - 5.11 SPECIFIC TESTS APPLICABLE TO ROTATING MACHINES
    51 - 5.11.1 General
    51 - 5.11.2 Core loss testing
    52 - 5.12 SPECIFIC REQUIREMENTS FOR REPORTING ON ROTATING MACHINES
    52 - 5.13 SPECIFIC REQUIREMENTS FOR PACKAGING AND DESPATCH OF ROTATING MACHINES
    52 - 5.14 REINSTALLATION RECOMMENDATIONS FOR ROTATING MACHINES
    53 - SECTION 6 EX 'd' FLAMEPROOF EQUIPMENT
    53 - 6.1 INTRODUCTION
    53 - 6.1.1 General
    53 - 6.1.2 Without suffering damage
    53 - 6.1.3 Without causing ignition
    53 - 6.1.4 Overhaul pre-requisites
    54 - 6.1.5 Initial inspection
    56 - 6.2 OVERHAUL
    56 - 6.3 REPAIR
    56 - 6.4 RECLAMATION
    56 - 6.5 CATEGORIES OF REPAIR
    57 - 6.6 CHECKS AND REPORTING
    57 - 6.6.1 General
    57 - 6.6.2 Flameproof motors
    57 - 6.6.3 Maximum surface temperature
    57 - 6.6.4 Fixing bolts, studs and nuts
    58 - 6.6.5 Breathing devices
    58 - 6.6.6 Flamepaths
    66 - 6.7 IN-SITU TEMPORARY REPAIR FOR HOLE OR THREAD
    68 - 6.8 HYDROSTATIC PRESSURE TESTS
    68 - 6.8.1 General
    69 - 6.8.2 Testing personnel
    69 - 6.8.3 Test procedure
    70 - 6.8.4 Reporting of results
    70 - 6.8.5 Interpretation of results
    71 - 6.9 FINAL VERIFICATION
    71 - 6.10 PACKAGING AND DESPATCH
    72 - SECTION 7 EX 'e' INCREASED SAFETY
    72 - 7.1 INTRODUCTION
    72 - 7.1.1 General
    72 - 7.1.2 Arcing or sparking parts
    72 - 7.1.3 Insulation
    72 - 7.1.4 Temperature
    73 - 7.1.5 Terminals and terminations
    73 - 7.2 OWNER/OPERATOR
    73 - 7.3 INSPECTION/OVERHAUL
    73 - 7.3.1 Insulation material
    73 - 7.3.2 Insulation clearances
    74 - 7.3.3 Insulation creepage
    74 - 7.3.4 Physical damage
    74 - 7.3.5 Temperature sensing devices
    74 - 7.3.6 Terminals and terminations
    74 - 7.3.7 Glands
    75 - 7.3.8 Seals and IP rating
    75 - 7.4 SPECIFIC ISSUES FOR ROTATING MACHINES
    75 - 7.4.1 Rotor
    75 - 7.4.2 Stator
    76 - 7.4.3 Fans
    76 - 7.4.4 Overloads
    76 - 7.5 REPAIR
    76 - 7.5.1 Enclosure repair
    76 - 7.5.2 Winding replacement
    76 - 7.5.3 Removal of windings
    76 - 7.5.4 Repair of rotors
    77 - 7.6 FINAL VERIFICATION
    77 - 7.7 PACKAGING AND DESPATCH
    77 - 7.8 REPORTING
    78 - SECTION 8 EX 'i' INSTRINSIC SAFETY
    78 - 8.1 GENERAL
    80 - 8.2 OWNER/OPERATOR RESPONSIBILITIES
    83 - 8.3 INITIAL ASSESSMENT
    84 - 8.4 OVERHAUL
    84 - 8.4.1 General
    84 - 8.4.2 Overhaul of intrinsically safe equipment
    85 - 8.4.3 Overhaul of intrinsic safety associated equipment
    86 - 8.5 PASS/FAIL CRITERIA FOR OVERHAULED EQUIPMENT
    86 - 8.6 COMPONENTS FORMING PART OF INTRINSICALLY SAFE EQUIPMENT
    86 - 8.6.1 Enclosures
    86 - 8.6.2 Cable entries
    86 - 8.6.3 Terminations
    86 - 8.6.4 Soldered connections
    87 - 8.6.5 Fuses
    87 - 8.6.6 Relays
    87 - 8.6.7 Shunt diode safety barriers
    87 - 8.6.8 Printed circuit boards
    87 - 8.6.9 Optocouplers and piezoelectric components
    87 - 8.6.10 Electrical components
    88 - 8.6.11 Batteries
    88 - 8.6.12 Internal wiring
    88 - 8.6.13 Transformers
    88 - 8.6.14 Encapsulated components
    88 - 8.6.15 Non-electrical parts
    88 - 8.7 TESTING/ASSESSMENT
    89 - 8.8 REPAIR
    89 - 8.8.1 General
    89 - 8.8.2 Repairs using soldering
    90 - 8.9 RECLAMATION
    90 - 8.10 TESTING
    90 - 8.11 ALTERATIONS AND MODIFICATIONS
    90 - 8.12 REPORTING
    91 - 8.13 PACKAGING AND DESPATCH
    92 - SECTION 9 EX 'm' ENCAPSULATION
    92 - 9.1 INTRODUCTION
    92 - 9.2 REPAIR/OVERHAUL PROCEDURES
    92 - 9.2.1 Removal of encapsulation material
    92 - 9.2.2 Replacement of components
    93 - 9.2.3 Preparation for replacing encapsulation
    93 - 9.2.4 Encapsulating material
    93 - 9.2.5 Pouring encapsulation material
    93 - 9.2.6 Visual inspection
    94 - 9.2.7 Reclamation
    95 - SECTION 10 EX 'n' NON-SPARKING
    95 - 10.1 INTRODUCTION
    95 - 10.1.1 General
    95 - 10.1.2 Arcing or sparking parts
    95 - 10.1.3 Insulation
    95 - 10.1.4 Temperature
    96 - 10.1.5 Terminals and terminations
    96 - 10.2 INSPECTION AND OVERHAUL
    96 - 10.2.1 General
    96 - 10.2.2 Insulation material
    96 - 10.2.3 Insulation clearances
    96 - 10.2.4 Insulation creepage
    97 - 10.2.5 Physical damage
    97 - 10.2.6 Temperature-sensing devices
    97 - 10.2.7 Terminals and terminations
    97 - 10.2.8 Glands
    97 - 10.2.9 Seals and IP rating
    98 - 10.2.10 Rubber/Neoprene type seals
    98 - 10.2.11 Shaft seals
    98 - 10.2.12 Equi-potential (earth) bonding
    98 - 10.3 ROTATING MACHINE SPECIFIC ISSUES
    98 - 10.3.1 Rotor
    98 - 10.3.2 Fans
    98 - 10.4 REPAIR
    98 - 10.4.1 Enclosure repair
    98 - 10.4.2 Winding replacement
    99 - 10.4.3 Repair of rotors
    99 - 10.5 FINAL VERIFICATION
    99 - 10.6 PACKAGING AND DESPATCH
    99 - 10.7 REPORTING
    100 - SECTION 11 EX 'tD' (DIP)
    100 - 11.1 INTRODUCTION
    100 - 11.2 INSPECTION AND OVERHAUL
    100 - 11.2.1 General
    100 - 11.2.2 Gaskets
    100 - 11.2.3 Motors
    101 - 11.2.4 Temperature-sensing devices
    101 - 11.2.5 Cables and conduit entries
    101 - 11.2.6 Seals and IP rating
    101 - 11.2.7 Repair
    102 - 11.3 OVERHAUL
    102 - 11.3.1 Motor windings
    102 - 11.3.2 Repair of rotors
    102 - 11.4 FINAL VERIFICATION AND TESTS
    103 - 11.5 PACKAGING AND DESPATCH
    103 - 11.6 REPORTING
    104 - SECTION 12 EX 'p' PRESSURISED
    104 - 12.1 INTRODUCTION
    104 - 12.1.1 General
    104 - 12.1.2 Removal from service
    104 - 12.2 INITIAL INSPECTION
    105 - 12.3 ENCLOSURES
    105 - 12.3.1 Materials
    105 - 12.3.2 Gaskets and seals
    105 - 12.3.3 Fasteners
    105 - 12.4 TEMPERATURE RATING
    105 - 12.4.1 Lighting fittings
    105 - 12.4.2 Heat-generating equipment
    106 - 12.5 OVERHAUL AND REPAIR PROCEDURES FOR PRESSURISED EQUIPMENT
    106 - 12.5.1 General
    107 - 12.5.2 Routine tests
    107 - 12.5.3 Marking
    107 - 12.6 GROUP I EXPLOSION PROTECTED TRANSFORMERS
    109 - SECTION 13 EX 'o' OIL FILLED
    109 - 13.1 INTRODUCTION
    109 - 13.2 NON-SPARKING PROTECTION
    109 - 13.3 OIL CONDITIONING
    109 - 13.4 TESTING
    110 - SECTION 14 EX 'v' VENTILATED
    111 - SECTION 15 EX 's' SPECIAL PROTECTION
    112 - SECTION 16 GROUP I HAZARDOUS AREA REELING AND TRAILING CABLES
    112 - 16.1 SCOPE
    112 - 16.2 CABLE COMPONENTS
    112 - 16.2.1 General
    112 - 16.2.2 Conductors and conductor constructions
    113 - 16.2.3 Insulation
    113 - 16.2.4 Earthing and earthing conductors
    113 - 16.2.5 Screens on the active cores
    114 - 16.2.6 Semi-conductive elastomer
    114 - 16.2.7 Central pilot
    115 - 16.2.8 Sheath reinforcement
    115 - 16.2.9 Sheath
    115 - 16.2.10 Materials
    117 - 16.3 GUIDANCE ON ASSESSING CABLE CONDITION
    117 - 16.3.1 General
    117 - 16.3.2 Initial test
    117 - 16.3.3 Sheath test
    117 - 16.3.4 Cable repairer
    117 - 16.3.5 Final testing
    117 - 16.4 EVALUATION BEFORE REPAIR AND HISTORY RECORD
    117 - 16.4.1 History record
    118 - 16.4.2 Cable construction
    118 - 16.4.3 Terminations
    119 - 16.4.4 Insulation Resistance test records
    119 - 16.4.5 Symmetrical load test
    119 - 16.4.6 Visual examination
    119 - 16.4.7 Pre-repair tests
    120 - 16.4.8 Practicability of repair
    120 - 16.5 PROCEDURE FOR HARD SOLDERING REELING AND TRAILING CABLES
    120 - 16.5.1 General soldering information
    120 - 16.5.2 Procedure
    122 - SECTION 17 PRE-OVERHAUL INSPECTION (CODE C1) FOR GROUP I
    122 - 17.1 PRE-OVERHAUL REQUIREMENTS
    122 - 17.2 FLAMEPROOF
    122 - 17.3 INCREASED SAFETY EQUIPMENT
    123 - 17.4 PRESSURISED EQUIPMENT
    124 - SECTION 18 COMPLIANCE OF LEGACY PLANT
    124 - 18.1 GENERAL
    124 - 18.2 HISTORY
    124 - 18.3 USING THE FACTS
    124 - 18.4 ASSUMPTIONS
    124 - 18.5 VERIFICATION DOSSIER
    124 - 18.6 FACT GATHERING
    124 - 18.6.1 General
    126 - 18.6.2 Auditing
    126 - 18.6.3 Missing information
    126 - 18.6.4 Status
    126 - 18.6.5 Summary
    127 - APPENDIX A - QUALITY MANAGEMENT SYSTEM COMPONENT
    127 - A1 GENERAL
    127 - A2 ROLES AND RESPONSIBILITIES OF SERVICE FACILITY
    128 - A3 QUALITY MANAGEMENT SYSTEM-RESOURCE MANAGEMENT
    128 - A3.1 General
    128 - A3.2 Technical library
    128 - A3.3 Training and competency
    129 - A4 QUALITY MANAGEMENT SYSTEM-REPORTS
    130 - A5 QUALITY MANAGEMENT SYSTEM-DIMENSIONAL CHECKS
    130 - A5.1 Dimensional measurements
    130 - A5.2 Measuring equipment
    131 - A6 QUALITY MANAGEMENT SYSTEM-WORK PROCEDURES
    132 - A7 QUALITY MANAGEMENT SYSTEM-CONDITIONS FOR EQUIPMENT RELEASE
    132 - A7.1 General
    132 - A7.2 Welding and brazing
    132 - A7.3 Non-conforming product
    133 - APPENDIX B - MEASUREMENT AND CALIBRATION IN Ex WORKSHOPS
    133 - B1 SUMMARY-ESSENTIAL WORKSHOP INFORMATION
    133 - B2 WORKSHOP MEASUREMENT MANAGEMENT
    133 - B3 CALIBRATION INTERVALS
    134 - B4 CONTEXT
    135 - B5 DEFINITIONS
    135 - B5.1 Calibration
    135 - B5.2 Traceability
    135 - B5.3 Verification
    135 - B6 SPECIFYING MEASUREMENTS
    135 - B6.1 General
    136 - B6.2 The metric system, calibration and traceability
    137 - B7 CALIBRATION PATHWAYS FOR TRACEABILITY
    137 - B7.1 General
    138 - B7.2 Pathway A
    138 - B7.3 Pathway B
    139 - B7.4 Pathway C
    139 - B7.5 Implementation of pathways
    139 - B8 PERFORMANCE BREAKDOWN AND RE-CALIBRATION
    141 - B9 CALIBRATION OF COMMONLY USED EQUIPMENT
    141 - B9.1 General
    141 - B9.2 Specifications for calibration
    141 - B9.3 Considerations in purchasing calibration services
    141 - B9.4 Outsourcing of verification activities
    142 - B10 EFFECTS OF UNCERTAINTY ON CONFORMITY DECISIONS
    142 - B10.1 General
    144 - B10.2 Assumptions
    144 - B11 MEASUREMENT CONSIDERATIONS
    144 - B11.1 General
    145 - B11.2 Analysis of measurement tasks
    145 - B11.3 Considerations
    145 - B11.4 Selection of measuring equipment
    145 - B11.5 Use of user-adjustable equipment (zero and span)
    146 - B11.6 Application of correction factors
    146 - B11.7 Environmental influences
    146 - B11.8 Environmental monitoring equipment
    146 - B11.9 Use of hired equipment
    147 - B11.10 Determination of calibration intervals
    148 - B12 EQUIPMENT ASSURANCE PROGRAMS
    148 - B12.1 General
    148 - B12.2 Suspending calibration or checks
    148 - B12.3 Integration of calibration activities with workshop measurement
    149 - B13 COMMENTARY ON MEASUREMENT TASKS
    149 - B13.1 General
    149 - B13.2 Length
    149 - B13.3 Surface roughness
    149 - B13.4 Thread gauges
    149 - B13.5 Torque
    149 - B13.6 Electrical
    149 - B13.7 Temperature
    149 - B13.8 Balancing
    150 - B13.9 Pressure testing
    150 - B14 COMMENTARY UPON MP 87-2
    150 - B15 EQUIPMENT RECORD KEEPING
    151 - B16 REFERENCES
    155 - APPENDIX C - SAMPLE CERTIFICATES AND FORMS
    192 - APPENDIX D - HISTORICAL INFORMATION RELATING TO EQUIPMENT APPROVAL SCHEMES
    192 - D1 GENERAL
    192 - D2 STATE AUTHORITY APPROVALS
    192 - D2.1 History
    193 - D2.2 Overview
    193 - D2.3 Handling changes
    193 - D3 P/3 APPROVALS COMMITTEE (1960–1987)
    193 - D3.1 History
    193 - D3.2 Overview
    194 - D4 P/3 AUSEx SCHEME (1987–1993)
    194 - D5 AUSEx SCHEME 1993–2003
    194 - D5.1 History and overview
    194 - D5.2 Documentation
    195 - D6 ANZEx SCHEME 2001
    195 - D7 HANDLING CHANGES
    196 - D8 RELEVANT INTERNATIONAL SCHEMES
    196 - D8.1 UK
    196 - D8.2 IECEx
    197 - APPENDIX E - HISTORICAL INFORMATION RELATING TO SERVICE FACILITY APPROVAL SCHEMES

    Abstract - (Show below) - (Hide below)

    The objective of this Handbook is to provide service facilities, equipment owner and/or operators and relevant regulatory authorities involved in the repair and overhaul of electrical equipment in hazardous areas with guidance to ensure safety and compliance with the relevant existing Standards. The Handbook also offers additional guidance on techniques and special processes necessary to ensure consistent and reliable delivery of repaired and overhauled equipment and cables.

    Scope - (Show below) - (Hide below)

    This Handbook provides guidance for the repair and overhaul of explosion-protected electrical equipment used in hazardous areas (defined in AS/NZS 60079.0).The Handbook covers equipment with a Group I designation for coal mining; Group II where flammable gases and vapours may be present; and Group III which includes equipment used in the presence of combustible dusts. This Handbook details the methods of overhaul, repair, examination and the testing required to ensure safety and compliance with the relevant Standards for the different equipment explosion-protection techniques. It covers the several types of explosion-protection techniques currently in use and provides guidance for repair and overhaul service facilities.The soon to be published revision of AS/NZS 3800 (and IEC 60079-19 Edition 3) offer a performance-based approach to the overhaul of electrical equipment for use in hazardous areas. In many applications it was felt it was necessary to establish guidance to standardise the approach for inspection, repair and overhaul techniques and methods, and to provide a repository where expert knowledge can be accumulated from experience and disseminated for the benefit of stakeholders.The objective of this Handbook is to provide service facilities, equipment owner and/or operators and relevant regulatory authorities involved in the repair and overhaul of electrical equipment in hazardous areas with guidance to ensure safety and compliance with the relevant existing Standards.The Handbook also offers additional guidance on techniques and special processes necessary to ensure consistent and reliable delivery of repaired and overhauled equipment and cables.This document is to be read initially in conjunction with AS/NZS 3800 and IEC 60079-19 Edition 3, the recognized international Standard for repair and overhaul of explosion-protected electrical equipment. In anticipation of the soon-to-be published revised AS/NZS 3800 (and IEC 60079 Edition 3), where possible, reference to these documents has been quoted throughout the text.

    General Product Information - (Show below) - (Hide below)

    Committee EL-023
    Document Type Handbook
    Publisher Standards Australia
    Status Withdrawn

    History - (Show below) - (Hide below)

    First published as HB 239:2011.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS/NZS 60079.26:2007 Explosive atmospheres Equipment with equipment protection level (EPL) Ga
    AS/NZS 60079.17:2009 Explosive atmospheres Electrical installations inspection and maintenance (IEC 60079-17, Ed.4.0 (2007) MOD)
    AS/NZS 61241.10:2005 Electrical apparatus for use in the presence of combustible dust Classification of areas where combustible dusts are or may be present
    AS/NZS 60079.2:2007 Explosive atmospheres Equipment protection by pressurized enclosure 'p'
    AS/NZS 4871.4:2010 Electrical equipment for mines and quarries Mains powered electrical mobile machines
    AS/NZS 1747:2003 Reeling, trailing and feeder cables used for mining - Repair, testing and fitting of accessories (Reconfirmed 2020)
    AS/NZS 61241.2.3:2000 Electrical apparatus for use in the presence of combustible dust Test methods - Method for determining the minimum ignition energy of dust/air mixtures
    AS/NZS 61241.1:2005 Electrical apparatus for use in the presence of combustible dust Protection by enclosures 'tD'
    AS/NZS 60079.15:2006 Electrical apparatus for explosive gas atmospheres Construction, test and marking of type of protection, n electrical apparatus
    AS/NZS 60079.11:2006 Explosive atmospheres Equipment protection by intrinsic safety 'i'
    AS/NZS 60079.1.1:2002 Electrical apparatus for explosive gas atmospheres Flameproof enclosures 'd' - Method of test for ascertainment of maximum experimental safe gap
    AS/NZS 4871.6:2007 Electrical equipment for coal mines, for use underground Diesel powered machinery and ancillary equipment
    AS/NZS 60079.7:2006 Explosive atmospheres Equipment protection by increased safety 'e'
    AS/NZS 60079.6:2007 Explosive atmospheres Equipment protection by oil immersion 'o'
    AS/NZS 4871.1:2010 Electrical equipment for mines and quarries General requirements
    AS/NZS 61241.4:2002 Electrical apparatus for use in the presence of combustible dust Type of protection 'pD'
    AS/NZS 4871.5:2010 Electrical equipment for mines and quarries Battery powered electrical mobile machines
    AS/NZS 2802:2000 Electric cables - Reeling and trailing - For mining and general use (other than underground coal mining) (Reconfirmed 2020)
    AS/NZS 2081.5:2002 Electrical equipment for coal and shale mines - Electrical protection devices - Earth-fault current limiters
    AS/NZS 2081.2:2002 Electrical equipment for coal and shale mines - Electrical protection devices - Earth-continuity monitoring devices
    AS/NZS 60079.20:2000 Electrical apparatus for explosive gas atmospheres Data for flammable gases and vapours, relating to the use of electrical apparatus
    AS/NZS 61241.18:2005 Electrical apparatus for use in the presence of combustible dust Protection by encapsulation 'mD'
    AS/NZS 60079.18:2011 Explosive atmospheres Equipment protection by encapsulation 'm'
    AS/NZS 3800:2005 Electrical equipment for explosive atmospheres - Repair and overhaul
    AS/NZS 2081.1:2002 Electrical equipment for coal and shale mines - Electrical protection devices - General requirements
    AS/NZS 2381.1:2005 Electrical equipment for explosive gas atmospheres - Selection, installation and maintenance - General requirements
    AS/NZS ISO 9001:2008 Quality management systems - Requirements
    AS/NZS 60079.30.1:2007 Explosive atmospheres Electrical resistance trace heating - General and testing requirements
    AS/NZS 60079.5:2007 Explosive atmospheres Equipment protection by powdered filling 'q'
    AS/NZS 1299:2009 Electrical equipment for mines and quarries - Explosion-protected three-phase restrained plugs and receptacles for working voltages up to and including 3.3 kV (Reconfirmed 2020)
    AS/NZS 1300:2009 Electrical equipment for mines and quarries - Bolted explosion-protected three-phase cable coupling devices (Reconfirmed 2020)
    AS/NZS 1802:2003 Electric cables - Reeling and trailing - For underground coal mining purposes
    AS/NZS 4871.3:2010 Electrical equipment for mines and quarries Substations
    AS/NZS 60079.27:2008 Explosive atmospheres Fieldbus intrinsically safe concept (FISCO)
    AS/NZS 60079.0:2008 Explosive atmospheres Equipment - General requirements
    AS 60529-2004 Degrees of protection provided by enclosures (IP Code) (Reconfirmed 2018)
    AS/NZS 60079.29.2:2008 Explosive atmospheres Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen
    AS/NZS 60079.29.4:2011 Explosive atmospheres Gas detectors - Performance requirements of open path detectors for flammable gases (Reconfirmed 2022)
    AS/NZS 60079.28:2007 Explosive atmospheres Protection of equipment and transmission systems using optical radiation
    AS/NZS 2081.4:2002 Electrical equipment for coal and shale mines - Electrical protection devices - Lockout earth-fault protection devices
    AS/NZS 60079.30.2:2007 Explosive atmospheres Electrical resistance trace heating - Application guide for design, installation and maintenance (IEC 60079-30-2, Ed. 1.0 (2007) MOD)
    AS/NZS 61241.0:2005 Electrical apparatus for use in the presence of combustible dust General requirements
    AS/NZS 1972:2006 Electric cables - Underground coal mines - Other than reeling and trailing (Reconfirmed 2020)
    AS/NZS 60079.12:2000 Electrical apparatus for explosive gas atmospheres Classification of mixtures of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents
    AS/NZS 60079.10.1:2009 Explosive atmospheres Classification of areas - Explosive gas atmospheres (IEC 60079-10-1, Ed.1.0(2008) MOD)
    AS/NZS 62013.1:2001 Caplights for use in mines susceptible to firedamp General requirements - Construction and testing in relation to the risk of explosion
    AS/NZS 61241.11:2006 Electrical apparatus for use in the presence of combustible dust Protection by intrinsic safety iD
    AS/NZS 62013.2:2001 Caplights for use in mines susceptible to firedamp Performance and other safety-related matters
    AS/NZS 60079.25:2011 Explosive atmospheres Intrinsically safe electrical systems
    AS/NZS 61241.14:2005 Electrical apparatus for use in the presence of combustible dust Selection and installation (IEC 61241-14, Ed.1.0(2004) MOD)
    AS/NZS 60079.14:2009 Explosive atmospheres Electrical installations design, selection and erection (IEC 60079-14, Ed. 4.0 (2007) MOD)
    AS/NZS 2290.1:2005 Electrical equipment for coal mines - Introduction and maintenance - For hazardous areas
    AS/NZS 60079.4:2000 Electrical apparatus for explosive gas atmospheres Method of test for ignition temperature
    AS/NZS 4761.2:2008 Competencies for working with electrical equipment for hazardous areas (EEHA) Guide to assessing competency
    AS/NZS 2081.3:2002 Electrical equipment for coal and shale mines - Electrical protection devices - Earth-leakage protection systems for use on earth-fault current limited systems (IT systems)
    AS/NZS 4761.1:2008 Competencies for working with electrical equipment for hazardous areas (EEHA) Competency Standards
    AS/NZS 60079.1:2007 Explosive atmospheres Equipment protection by flameproof enclosures 'd'
    AS/NZS 61241.2.1:2000 Electrical apparatus for use in the presence of combustible dust Test methods - Methods for determining the minimum ignition temperature of dust
    AS/NZS 60079.29.1:2008 Explosive atmospheres Gas detectors - Performance requirements of detectors for flammable gases
    AS/NZS 61241.2.2:2000 Electrical apparatus for use in the presence of combustible dust Test methods - Method for determining the electrical resistivity of dust in layers
    AS/NZS 4871.2:2010 Electrical equipment for mines and quarries Distribution, control and auxiliary equipment
    AS/NZS 2381.2:2006 Electrical equipment for explosive atmospheres - Selection, installation and maintenance - Flameproof enclosure d

    Standards Referencing This Book - (Show below) - (Hide below)

    AS/NZS 3800:2012 Electrical equipment for explosive atmospheres - Repair and overhaul
    AS/NZS 2290.1:2014 Electrical equipment for coal mines - Introduction, inspection and maintenance For hazardous areas
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