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  • AS 61508.7-2001

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 of electrical/electronic/programmable electronic safety-related systems - Overview of techniques and measures

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

    Superseded date:  26-06-2021

    Language(s):  English

    Published date:  01-01-2001

    Publisher:  Standards Australia

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

    1 - AS 61508.7-2001 FUNCTIONAL SAFETY OF ELECTRICAL/ELECTRONIC/PROGRAMMABLE ELECTRONIC SAFETY-RELATED SYSTEMS - OVERVIEW OF TECHN
    4 - PREFACE
    5 - CONTENTS
    11 - 1 Scope
    13 - 2 Normative references
    14 - 3 Definitions and abbreviations
    15 - Annex A - Overview of techniques and measures for E/E/PES: control of random hardware failures (see IEC 61508-2)
    15 - A.1 Electrical
    16 - A.2 Electronic
    19 - A.3 Processing units
    20 - A.4 Invariable memory ranges
    22 - A.5 Variable memory ranges
    25 - A.6 I/O-units and interfaces (external communication)
    27 - A.7 Data paths (internal communication)
    28 - A.8 Power supply
    29 - A.9 Temporal and logical program sequence monitoring
    31 - A.10 Ventilation and heating
    32 - A.11 Communication and mass- storage
    33 - A.12 Sensors
    33 - A.13 Final elements (actuators)
    34 - A.14 Measures against the physical environment
    35 - Annex B - Overview of techniques and measures for E/E/PES: avoidance of systematic failures (see IEC 61508-2 and IEC 61508-3)
    35 - B.1 General measures and techniques
    38 - B.2 E/E/PES safety requirements specification
    43 - B.3 E/E/PES design and development
    47 - B.4 E/E/PES operation and maintenance procedures
    50 - B.5 E/E/PES integration
    52 - B.6 E/E/PES safety validation
    58 - Annex C - Overview of techniques and measures for achieving software safety integrity (see IEC 61508-3)
    58 - C.1 General
    58 - C.2 Requirements and detailed design
    75 - C.3 Architecture design
    82 - C.4 Development tools and programming languages
    88 - C.5 Verification and modification
    100 - C.6 Functional safety assessment
    105 - Annex D - A probabilistic approach to determining software safety integrity for pre-developed software
    105 - D.1 General
    106 - D.2 Statistical testing formulae and examples of their use
    109 - D.3 References

    Abstract - (Show below) - (Hide below)

    Specifies the safety lifecycle activities in systems comprised of electrical/electronic/programmable electronic devices with an overview of various safety techniques and measures as outlined in Part 2 and in Part 3 of this Standard.

    Scope - (Show below) - (Hide below)

    1.1 This part of IEC 61508 contains an overview of various safety techniques and measures relevant to IEC 61508-2 and IEC 61508-3.NOTE The references should be considered as basic references to methods and tools or as examples, and may not represent the state of the art.1.2 IEC 61508-1, IEC 61508-2, IEC 61508-3 and IEC 61508-4 are basic safety publications, although this status does not apply in the context of low-complexity E/E/PE safety-related systems (see 3.4.4 of IEC 61508-4). As basic safety publications, they are intended for use by technical committees in the preparation of standards in accordance with the principles contained in IEC Guide 104 and ISO/IEC Guide 51. IEC 61508 is also intended for use as a stand-alone standard.One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its own publications. In this context, the requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the publications prepared by those technical committees.NOTE 1 The functional safety of an E/E/PE safety-related system can only be achieved when all related requirements are met. Therefore it is important that all related requirements are carefully considered and adequately referenced.NOTE 2 In the USA and Canada, until the proposed process sector implementation of IEC 61508 (i.e. IEC 61511) is published as an international standard in the USA and Canada, existing national process safety standards based on IEC 61508 (i.e. ANSI/ISA S84.01-1996) can be applied to the process sector instead of IEC 61508.1.3 Figure 1 shows the overall framework for parts 1 to 7 of this standard and indicates the role that IEC 61508-7 plays in the achievement of functional safety for E/E/PE safety-related systems.

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

    Committee IT-006
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS 61508.7-2001.

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

    AS 61508.1-1999 Functional safety of electrical/electronic/programmable electronic safety-related systems - General requirements
    AS 61508.5-1999 Functional safety of electrical/electronic/programmable electronic safety-related systems - Examples of methods for the determination of safety integrity levels
    AS 61508.4-1999 Functional safety of electrical/electronic/programmable electronic safety-related systems - Definition and abbreviations
    AS 61508.3-1999 Functional safety of electrical/electronic/programmable electronic safety-related systems - Software requirements

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

    AS 4024.1501-2006 Safety of machinery Design of safety related parts of control systems - General principles for design
    AS/NZS 4240.2:2009 Remote control systems for mining equipment Operation and maintenance for underground metalliferous mining (Reconfirmed 2021)
    AS 61508.0-2006 Functional safety of electrical/electronic/programmable electronic safety-related systems - Functional safety and AS 61508
    AS/NZS 4024.1:2006 Series Safety of machinery Safety of machinery series
    AS 3814-2005 Industrial and commercial gas-fired appliances
    AS 1210-2010 Pressure vessels (Reconfirmed 2021)
    AS 4024.1202-2006 Safety of machinery - General principles - Technical principles
    AS 4722-2009 Passenger ropeways and passenger conveyors
    AS/NZS 2290.1:2005 Electrical equipment for coal mines - Introduction and maintenance - For hazardous areas
    AS/NZS 2081.1:2002 Electrical equipment for coal and shale mines - Electrical protection devices - General requirements
    AS 3814-2002 (AG 501) Industrial and commercial gas-fired appliances
    AS 60204.11-2006 Safety of machinery - Electrical equipment of machines Requirements for HV equipment for voltages above 1000 V a.c. or 1500 V d.c and not exceeding 36 kV (IEC 60204-11, Ed. 1.0 (2000) MOD)
    AS 60204.1-2005 Safety of machinery - Electrical equipment of machines General requirements (IEC 60204-1, Ed. 5 (FDIS) MOD)
    AS 3533.1-2009 Amusement rides and devices Design and construction
    AS 4024.1502-2006 Safety of machinery Design of safety related parts of control systems - Validation (Reconfirmed 2014)
    AS/NZS 3788:2006 Pressure equipment - In-service inspection
    AS IEC 61131.8-2004 Programmable controllers - Guidelines for the application and implementation of programming languages
    AS/NZS 4871.6:2007 Electrical equipment for coal mines, for use underground Diesel powered machinery and ancillary equipment
    AS/NZS 1826:2008 Electrical equipment for explosive gas atmospheres - Special protection - Type of protection 's'
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