NBN EN 61508-6 : 2010

FOREWORD
INTRODUCTION
Clause
1 Scope
2 Normative references
3 Definitions and abbreviations
Annex A (informative) Application of IEC 61508-2 and
        of IEC 61508-3
   A.1 General
   A.2 Functional steps in the application of IEC
        61508-2
   A.3 Functional steps in the application of IEC
        61508-3
Annex B (informative) Example technique for evaluating
        probabilities of hardware failure
   B.1 General
   B.2 Average probability of failure on demand (for
        low demand mode of operation)
   B.3 Probability of failure per hour (for high demand
        or continuous mode of operation)
   B.4 References
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 clause failures
        in E/E/PE systems
   D.1 General
   D.2 Brief overview
   D.3 Scope of the methodology
   D.4 Points taken into account in the methodology
   D.5 Using the beta-factor to calculate the probability
        of failure in an E/E/PE safety-related system due
        to common cause failures
   D.6 Using the tables to estimate beta
   D.7 Examples of the use of the methodology
   D.8 References
Annex E (informative) Example applications of software
        safety integrity tables of IEC 61508-3
   E.1 General
   E.2 Example for safety integrity level 2
   E.3 Example for safety integrity level 3
Bibliography

Covers information and guidelines on IEC 61508-2 and IEC 61508-3. Also gives a methodology for quantifying the effect of hardware-related common cause failures on the probability of failure.