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  • BS IEC 61511-3 : 2003 AMD 15578

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    FUNCTIONAL SAFETY - SAFETY INSTRUMENTED SYSTEMS FOR THE PROCESS INDUSTRY SECTOR - PART 3: GUIDANCE FOR THE DETERMINATION OF THE REQUIRED SAFETY INTEGRITY LEVELS

    Available format(s): 

    Superseded date:  16-05-2005

    Language(s): 

    Published date:  23-11-2012

    Publisher:  British Standards Institution

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

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Terms, definitions and abbreviations
    3 Risk and safety integrity - general guidance
      3.1 General
      3.2 Necessary risk reduction
      3.3 Role of safety instrumented systems
      3.4 Safety integrity
      3.5 Risk and safety integrity
      3.6 Allocation of safety requirements
      3.7 Safety integrity levels
      3.8 Selection of the method for determining the
          required safety integrity level
    Annex A (informative) As Low As Reasonably Practicable
            (ALARP) and tolerable risk concepts
    Annex B (informative) Semi-quantitative method
    Annex C (informative) The safety layer matrix method
    Annex D (informative) Determination of the required safety
             integrity levels - a semi-qualitative method:
             calibrated risk graph
    Annex E (informative) Determination of the required safety
             integrity levels - a qualitative method: risk graph
    Annex F (informative) Layer of protection analysis (LOPA)
    Figures
    Tables

    Abstract - (Show below) - (Hide below)

    Gives information on: - the underlying concepts of risk, the relationship of risk to safety integrity; - the determination of tolerable risk; - a number of different methods that enable the safety integrity levels for the safety instrumented functions to be determined.

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    Committee GEL/65/1
    Development Note Supersedes 99/244276 DC. (05/2003) Also available as a part of BS KIT 127. (06/2004) Renumbered and superseded by BS EN 61511-3. (05/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

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

    IEC 61511-1:2016+AMD1:2017 CSV Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and application programming requirements
    DIN V 19250:1994-05 CONTROL TECHNOLOGY; FUNDAMENTAL SAFETY ASPECTS TO BE CONSIDERED FOR MEASUREMENT AND CONTROL EQUIPMENT
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