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    I.S. EN 50402:2017

    Current The latest, up-to-date edition.

    ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF COMBUSTIBLE OR TOXIC GASES OR VAPOURS OR OF OXYGEN - REQUIREMENTS ON THE FUNCTIONAL SAFETY OF FIXED GAS DETECTION SYSTEMS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2017

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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

    National Foreword
    European foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 General requirements
    5 Functional modules and elements - Characterization
       and requirements
    6 Software
    7 Combining Functional Modules to Safety Functions
    8 Determination of hardware failure rates for
       each safety function
    9 Gas detection as part of an overall
       safety function
    10 Information requirements
    11 Validation
    12 Functional safety management
    13 Functional safety assessment
    14 Documentation
    Annex A (normative) - Transformation of the
            SIL-capabilities of gas detection systems
    Annex B (normative) - Transformation from
            generic standard requirements to modules
    Annex C (informative) - Determination of
            SIL-capability of a safety function of the
            gas detection system
    Annex D (informative) - Failure modes for
            specific measuring principles

    Abstract - (Show below) - (Hide below)

    Pertains to detection and measurement apparatus and systems for flammable or toxic gases or vapours or oxygen.

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current

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

    EN 61508-6:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 6: Guidelines on the application of IEC 61508-2 and IEC 61508-3
    EN 50270:2015 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
    EN 61508-3:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements
    EN 50104:2010 Electrical apparatus for the detection and measurement of oxygen - Performance requirements and test methods
    EN 61326-3-2:2008 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 3-2: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) - Industrial applications with specified electromagnetic environment
    IEC 60158-2:1982 Low-voltage controlgear. Part 2: Semiconductor contactors (solid state contactors)
    EN 61508-1:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements
    EN 60079-29-4:2010 Explosive atmospheres - Part 29-4: Gas detectors - Performance requirements of open path detectors for flammable gases
    EN 45544-3 : 2015 WORKPLACE ATMOSPHERES - ELECTRICAL APPARATUS USED FOR THE DIRECT DETECTION AND DIRECT CONCENTRATION MEASUREMENT OF TOXIC GASES AND VAPOURS - PART 3: PERFORMANCE REQUIREMENTS FOR APPARATUS USED FOR GENERAL GAS DETECTION
    EN 61784-3:2016/A1:2017 INDUSTRIAL COMMUNICATION NETWORKS - PROFILES - PART 3: FUNCTIONAL SAFETY FIELDBUSES - GENERAL RULES AND PROFILE DEFINITIONS (IEC 61784-3:2016/A1:2017)
    EN 60079-29-1:2016 Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
    EN 61508-7:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 7: Overview of techniques and measures
    IEC 61326-3-2 : 2.0 ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL AND LABORATORY USE - EMC REQUIREMENTS - PART 3-2: IMMUNITY REQUIREMENTS FOR SAFETY-RELATED SYSTEMS AND FOR EQUIPMENT INTENDED TO PERFORM SAFETY-RELATED FUNCTIONS (FUNCTIONAL SAFETY) - INDUSTRIAL APPLICATIONS WITH SPECIFIED ELECTROMAGNETIC ENVIRONMENT
    IEC 60079-29-3:2014 Explosive atmospheres - Part 29-3: Gas detectors - Guidance on functional safety of fixed gas detection systems
    IEC 61508-5:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels (see Functional Safety and IEC 61508)
    IEC 61508-4:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 4: Definitions and abbreviations (see Functional Safety and IEC 61508)
    IEC 61508-3:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements (see Functional Safety and IEC 61508)
    IEC 60079-29-4:2009 Explosive atmospheres - Part 29-4: Gas detectors - Performance requirements of open path detectors for flammable gases
    EN 61508-2:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 2: Requirements for electrical/electronic/programmable electronic safety-related systems
    EN 45544-4 : 2016 WORKPLACE ATMOSPHERES - ELECTRICAL APPARATUS USED FOR THE DIRECT DETECTION AND DIRECT CONCENTRATION MEASUREMENT OF TOXIC GASES AND VAPOURS - PART 4 - GUIDE FOR SELECTION, INSTALLATION, USE AND MAINTENANCE
    IEC 60079-29-2:2015 RLV Explosive atmospheres - Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen
    EN 50271:2010 Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen - Requirements and tests for apparatus using software and/or digital technologies
    EN 61508-5:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels
    EN 45544-1:2015 WORKPLACE ATMOSPHERES - ELECTRICAL APPARATUS USED FOR THE DIRECT DETECTION AND DIRECT CONCENTRATION MEASUREMENT OF TOXIC GASES AND VAPOURS - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
    IEC 61508-6:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 6: Guidelines on the application of IEC 61508-2 and IEC 61508-3 (see Functional Safety and IEC 61508)
    IEC 61508-1:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements (see Functional Safety and IEC 61508)
    EN 60079-29-2:2015 Explosive atmospheres - Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen
    IEC 61508-7:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 7: Overview of techniques and measures (see Functional Safety and IEC 61508)
    EN 60079-29-3:2014 Explosive atmospheres - Part 29-3: Gas detectors - Guidance on functional safety of fixed gas detection systems
    EN 61326-3-1:2017 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 3-1: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) - General industrial applications
    IEC 61784-3:2016+AMD1:2017 CSV Industrial communication networks - Profiles - Part 3: Functional safety fieldbuses - General rules and profile definitions
    EN 50159:2010 Railway applications - Communication, signalling and processing systems - Safety-related communication in transmission systems
    EN 61508-4:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 4: Definitions and abbreviations
    EN 45544-2 : 2015 WORKPLACE ATMOSPHERES - ELECTRICAL APPARATUS USED FOR THE DIRECT DETECTION AND DIRECT CONCENTRATION MEASUREMENT OF TOXIC GASES AND VAPOURS - PART 2: PERFORMANCE REQUIREMENTS FOR APPARATUS USED FOR EXPOSURE MEASUREMENT
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