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  • NBN EN 61511-2 : 2005

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    Published date:  12-01-2013

    Publisher:  Belgian Standards

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

    1 Scope
    2 Normative references
    3 Terms, definitions and abbreviations
    4 Conformance to this International Standard
    5 Management of functional safety
       5.1 Objective
       5.2 Requirements
    6 Safety lifecycle requirements
       6.1 Objective
       6.2 Requirements
    7 Verification
       7.1 Objective
    8 Process hazard and risk assessment
       8.1 Objectives
       8.2 Requirements
    9 Allocation of safety functions to protection layers
       9.1 Objective
       9.2 Requirements of the allocation process
       9.3 Additional requirements for safety integrity level 4
       9.4 Requirement on the basic process control system as
           a layer of protection
       9.5 Requirements for preventing common cause, common
           mode and dependent failures
    10 SIS safety requirements specification
       10.1 Objective
       10.2 General requirements
       10.3 SIS safety requirements
    11 SIS design and engineering
       11.1 Objective
       11.2 General requirements
       11.3 Requirements for system behaviour on detection of a fault
       11.4 Requirements for hardware fault tolerance
       11.5 Requirements for selection of components and subsystems
       11.6 Field devices
       11.7 Interfaces
       11.8 Maintenance or testing design requirements
       11.9 SIF probability of failure
    12 Requirements for application software, including selection
       criteria for utility software
       12.1 Application software safety lifecycle requirements
       12.2 Application software safety requirements specification
       12.3 Application software safety validation planning
       12.4 Application software design and development
       12.5 Integration of the application software with the
            SIS subsystem
       12.6 FPL and LVL software modification procedures
       12.7 Application software verification
    13 Factory acceptance testing (FAT)
       13.1 Objectives
       13.2 Recommendations
    14 SIS installation and commissioning
       14.1 Objectives
       14.2 Requirements
    15 SIS safety validation
       15.1 Objective
       15.2 Requirements
    16 SIS operation and maintenance
       16.1 Objectives
       16.2 Requirements
       16.3 Proof testing and inspection
    17 SIS modification
       17.1 Objective
       17.2 Requirements
    18 SIS decommissioning
       18.1 Objectives
       18.2 Requirements
    19 Information and documentation requirements
       19.1 Objectives
       19.2 Requirements
    Annex A (informative) Example of techniques for calculating
                          the probability of failure on demand
                          for a safety instrumented function
    Annex B (informative) Typical SIS architecture development
    Annex C (informative) Application features of a safety PLC
    Annex D (informative) Example of SIS logic solver application
                          software development methodology
    Annex E (informative) Example of development of externally
                          configured diagnostics for a
                          safety-configured PE logic solver

    Abstract - (Show below) - (Hide below)

    Gives guidance on the specification, design, installation, operation and maintenance of Safety Instrumented Functions and related safety instrumented system as defined in IEC 61511-1.

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

    Document Type Standard
    Publisher Belgian Standards
    Status Current
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