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    AS/NZS 60079.28:2007

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    Explosive atmospheres Protection of equipment and transmission systems using optical radiation

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

    Superseded date:  30-10-2017

    Language(s):  English

    Published date:  26-04-2007

    Publisher:  Standards Australia

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

    1 - AS/NZS 60079.28:2007 Explosive atmospheres Part 28: Protection of equipment and transmission systems using optical radiation
    4 - PREFACE
    5 - CONTENTS
    6 - INTRODUCTION
    7 - 1 Scope
    8 - 2 Normative references
    8 - 3 Terms and definitions
    11 - 4 General requirements
    11 - 4.1 Optical equipment
    11 - 4.2 Risk levels
    11 - 5 Types of protectio
    11 - 5.1 General
    12 - 5.2 Requirements for inherently safe optical radiation “op is”
    14 - 5.3 Requirements for protected optical radiation “op pr”
    15 - 5.4 Optical radiation interlock with optical fibre breakage “op sh”
    15 - 5.5 Suitability of types of protection
    16 - 6 Type verifications and tests
    16 - 6.1 Test set-up for ignition tests
    16 - 6.2 Reference tes
    17 - 6.3 Test mixtures
    18 - 6.4 Tests for pulse trains and pulses between 1 ms and 1 s duration
    18 - 7 Marking
    18 - 7.1 General
    18 - 7.2 Marking information
    18 - 7.3 Examples of marking
    19 - Annex A (normative) Reference test data
    20 - Annex B (informative) Ignition mechanisms
    25 - Annex C (normative) Ignition hazard assessment
    26 - Annex D (informative) Typical optical fibre cable design
    27 - Annex E (informative) Introduction of an alternative risk assessment method encompassing “equipment protection levels” for Ex equipment
    32 - Bibliography

    Abstract - (Show below) - (Hide below)

    Explains the potential ignition hazard from equipment using optical radiation intended for use in explosive gas atmospheres. It also covers equipment, which itself is located outside but its emitted optical radiation enters such atmospheres. It describes precautions and requirements to be taken when using optical radiation transmitting equipment in explosive gas atmospheres.

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

    Committee EL-014
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS/NZS 60078.29:2007.

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

    AS/NZS 60079.0:2005 Electrical apparatus for explosive gas atmospheres General requirements
    AS/NZS 2211.2:2006 Safety of laser products Safety of optical fibre communication systems (OFCS)
    AS/NZS 60079.25:2004 Electrical apparatus for explosive gas atmospheres Intrinsically safe systems
    AS/NZS 60079.26 (INT):2005 Electrical apparatus for explosive gas atmospheres Construction, test and marking of Group II Zone 0 electrical apparatus
    AS/NZS 60079.18:2005 Electrical apparatus for explosive gas atmospheres Construction, test and marking of type of protection encapsulation m electrical apparatus
    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 60079.15:2006 Electrical apparatus for explosive gas atmospheres Construction, test and marking of type of protection, n electrical apparatus
    AS IEC 61511.1-2004 Functional safety - Safety instrumented systems for the process industry sector - Framework, definitions, systems, hardware and software requirements
    AS/NZS 60079.11:2006 Explosive atmospheres Equipment protection by intrinsic safety 'i'
    AS/NZS 60079.7:2006 Explosive atmospheres Equipment protection by increased safety 'e'
    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 IEC 61511.3-2004 Functional safety - Safety instrumented systems for the process industry sector - Guidance for the determination of the required safety integrity levels (Reconfirmed 2015)
    AS/NZS 60079.2:2002 Electrical apparatus for explosive gas atmospheres Pressurized enclosures 'p'
    AS/NZS 60079.10:2004 Electrical apparatus for explosive gas atmospheres Classification of hazardous areas (IEC 60079-10:2002 MOD)
    AS/NZS 60079.1:2005 Electrical apparatus for explosive gas atmospheres Flameproof enclosures 'd'
    AS/NZS 60079.6:2000 Electrical apparatus for explosive gas atmospheres Oil-immersion 'o'
    AS/NZS 60079.27(INT):2006 Electrical apparatus for explosive gas atmospheres Fieldbus intrinsically safe concept (FISCO) and fieldbus non-incendive concept (FNICO)
    AS/NZS 60079.5:2000 Electrical apparatus for explosive gas atmospheres Powder filling 'q'
    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 IEC 61511.2-2004 Functional safety - Safety instrumented systems for the process industry sector - Guidelines for the application of AS IEC 61511-1
    AS/NZS 60079.4:2000 Electrical apparatus for explosive gas atmospheres Method of test for ignition temperature

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

    AS 4647-2011 Diaphragm gas meters
    AS/NZS 60079.17:2009 Explosive atmospheres Electrical installations inspection and maintenance (IEC 60079-17, Ed.4.0 (2007) MOD)
    AS/NZS 60335.2.11:2009 Household and similar electrical appliances - Safety Particular requirements for tumble dryers (IEC 60335-2-11 Ed 7.1, MOD)
    AS/NZS 60079.0:2008 Explosive atmospheres Equipment - General requirements
    AS/NZS 4871.1:2010 Electrical equipment for mines and quarries General requirements
    AS/NZS 60079.33:2012 Explosive atmospheres Equipment protection by special protection 's'
    AS/NZS 3004.2:2008 Electrical installations - Marinas and recreational boats Recreational boats installations
    AS/NZS 60079.0:2012 Explosive atmospheres Equipment - General requirements
    HB 239:2011 Guidance on the repair and overhaul of electrical equipment for explosive atmospheres
    AS/NZS 5026:2012 The storage and handling of Class 4 dangerous goods
    HB 13-2007 Electrical equipment for hazardous areas
    AS ISO 21789:2014 Gas turbine applications - Safety
    AS/NZS 4871.1:2012 Electrical equipment for mines and quarries General requirements
    AS/NZS 4871.3:2010 Electrical equipment for mines and quarries Substations
    AS/NZS 60079.14:2009 Explosive atmospheres Electrical installations design, selection and erection (IEC 60079-14, Ed. 4.0 (2007) MOD)
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