IEC 61508-6:2010

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions and abbreviations
Annex A (informative) - Application of IEC 61508-2 and
        of IEC 61508-3
Annex B (informative) - Example of technique for evaluating
        probabilities of hardware failure
Annex C (informative) - Calculation of diagnostic coverage
        and safe failure fraction - worked example
Annex D (informative) - A methodology for quantifying
        the effect of hardware-related common cause
        failures in E/E/PE systems
Annex E (informative) - Example applications of software
        safety integrity tables of IEC 61508-3
Bibliography

Looking for deeper insights? Check out IEC 61508:2010 CMV, which includes commented versions of Parts 1 to 7 of IEC 61508. These commented versions highlight the changes made from previous editions and provide explanations from a world-leading expert on the reasons behind the most significant changes.

IEC 61508-6:2010 contains information and guidelines on IEC 61508-2 and IEC 61508 3. Annex A gives a brief overview of the requirements of IEC 61508-2 and IEC 61508-3 and sets out the functional steps in their application. Annex B gives an example technique for calculating the probabilities of hardware failure and should be read in conjunction with 7.4.3 and Annex C of IEC 61508-2 and Annex D. Annex C gives a worked example of calculating diagnostic coverage and should be read in conjunction with Annex C of IEC 61508-2. Annex D gives a methodology for quantifying the effect of hardware-related common cause failures on the probability of failure. Annex E gives worked examples of the application of the software safety integrity tables specified in Annex A of IEC 61508-3 for safety integrity levels 2 and 3. 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.

This publication is of high relevance for Smart Grid.