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AS/NZS 1826:2008
[Available Superseded]Electrical equipment for explosive gas atmospheres — Special protection — Type of protection ‘s’
Specifies requirements relating to the design, construction, testing and marking of electrical equipment which can be shown by test or assessment to be suitable for use in explosive gas atmospheres. It may be used by certification bodies in the testing and/or assessment of equipment for certification.
Published: 30/05/2008
Pages: 21
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Referenced documents
3 Definitions
4 General
4.1 Equipment group and temperature classification
4.2 Level of protection—Equipment protection level (EPL)
4.3 Manufacturer's specification
4.4 Verification
5 Application of AS/NZS 60079.0 requirements
5.1 General
5.2 Proposed alternate requirement
5.3 Specification of alternate requirement
5.4 Assessment and/or test to alternate requirements
5.5 Reporting results of alternate requirements
6 Safety requirements relating to the design and construction of equipment and protective systems
6.1 Principles of integrated explosion safety
6.2 Installation and maintenance conditions
6.3 Surrounding area conditions
6.4 Selection of materials
6.5 Design and construction
6.5.1 General
6.5.2 Enclosed structures and prevention of leaks
6.5.3 Dust deposits
6.5.4 Additional means of protection
6.5.5 Safe opening
6.5.6 Protection against other hazards
6.5.7 Protective devices
6.6 Potential ignition sources
6.6.1 Hazards arising from different ignition sources
6.6.2 Hazards arising from static electricity
6.6.3 Hazards arising from stray electric and leakage currents
6.6.4 Hazards arising from mechanical heating
6.6.5 Hazards arising from pressure change
6.7 Hazards arising from external effects
7 Supplementary requirements in respect of equipment
7.1 Requirements applicable to equipment with EPL ‘Ma’
7.2 Requirements applicable to EPL ‘Mb’
7.3 Requirements applicable to EPL ‘Ga’
7.4 Requirements applicable to EPL ‘Da’
7.5 Requirements for applicable EPL ‘Gb’
7.6 Requirements applicable to EPL ‘Db’
7.7 Requirements applicable to EPL ‘Gc’
7.8 Requirements applicable to EPL ‘Dc’
8 Fault assessment
8.1 General
8.2 Application of faults
9 Special protection techniques
9.1 Hermetically sealed devices
9.1.1 General
9.1.2 Constructional requirements
9.2 Sealed devices
9.2.1 General
9.2.2 Constructional requirements
9.3 Specially constructed low volume devices intended as EPL ‘Ma’ or ‘Ga’
9.4 High voltage low current circuits
9.5 Other innovative means of ensuring safety
10 Connection of conductors and cables
11 Assessment and tests
11.1 General
11.2 Tests for equipment employing containment and/or energy limitation
11.2.1 Equipment employing containment
11.2.2 Equipment employing energy limitation
11.3 Temperature classification test
12 Documentation
13 Marking
13.1 Alternative marking 1
13.2 Alternative marking 2
14 Instructions
Appendix A
Appendix B
B1 Introduction
B2 Flame transmission test
B2.1 Sintered element (see Figure B1)
B2.2 Complete cells (see Figure B3)
Appendix C
Cited references in this standard
I.S. EN 1127-1
Explosive atmospheres. Explosion prevention and protection, Part 1: Basic concepts and methodology
I.S. EN 50050:2001
Electrical apparatus for potentially explosive atmospheres—Electrostatic hand-held spraying equipment
AS/NZS 62013.1
Caplights for use in mines susceptible to firedamp, Part 1: General requirements—Construction and testing in relation to the risk of explosion
[Obsolescent]
Electrical apparatus for use in the presence of combustible dust, Part 1: Protection by enclosures 'tD'
AS/NZS 60079.26
Explosive atmospheres, Part 26: Equipment with equipment protection level (EPL) Ga
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