BS EN 61508-2:2010

INTRODUCTION
1 Scope
2 Normative references
3 Definitions and abbreviations
4 Conformance to this standard
5 Documentation
6 Management of functional safety
7 E/E/PE system safety lifecycle requirements
8 Functional safety assessment
Annex A (normative) - Techniques and measures for
        E/E/PE safety-related systems - control of failures
        during operation
Annex B (normative) - Techniques and measures for
        E/E/PE safety-related systems - avoidance of
        systematic failures during the different phases of
        the lifecycle
Annex C (normative) - Diagnostic coverage and safe
        failure fraction
Annex D (normative) - Safety manual for compliant items
Annex E (normative) - Special architecture requirements
        for integrated circuits (ICs) with on-chip redundancy
Annex F (informative) - Techniques and measures for
        ASICs - avoidance of systematic failures
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Specifies the overall framework for the achievement of functional safety. Pertains to any safety-related system, as defined by IEC 61508-1, that contains at least one electrical, electronic or programmable electronic element. Also applies to all elements within an E/E/PE safety-related system (including sensors, actuators and the operator interface).

IEC 61508-2:2010 applies to any safety-related system, as defined by IEC 61508-1, that contains at least:
- one electrical, electronic or programmable electronic element;
- applies to all elements within an E/E/PE safety-related system;
- specifies how to refine the E/E/PE system safety requirements specification, developed in accordance with IEC 61508-1, into the E/E/PE system design requirements specification;
- specifies the requirements for activities that are to be applied during the design and manufacture of the E/E/PE safety-related systems except software, which is dealt with in IEC 61508-3.
These requirements include the application of techniques and measures that:
- are graded against the safety integrity level, for the avoidance of, and control of, faults and failures;
- specifies the information necessary for carrying out the installation, commissioning and final safety validation of the E/E/PE safety-related system;
- provides requirements for the preparation of information and procedures needed by the user for the operation and maintenance of the E/E/PE safety-related systems;
- specifies requirements to be met by the organisation carrying out any modification of the E/E/PE safety-related systems.
This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. It has been subject to a thorough review and incorporates many comments received at the various revision stages. It has the status of a basic safety publication according to IEC Guide 104.

NEW! Also available: IEC Standards+ 61508:2010, containing all parts, together with a commented Redline version. Changes made in this 2nd edition are highlighted and commented by a leading world expert.

This publication is of high relevance for Smart Grid.