4.0. Functional Safety Standards: IEC 61508

At the beginning of the discussion on IEC 61508 and 61511, the author wishes to put forward the following acknowledgement to IEC for granting permission to use the figures of their various standards mentioned in the box for this book.
The author thanks the International Electrotechnical Commission (IEC) for permission to reproduce information from its International Standards IEC 61508-1 ed. 2.0 (2010), IEC 61508-3 ed. 2.0 (2010) and IEC 61511-1 ed. 1.0 (2003). All such extracts are copyright of IEC, Geneva, Switzerland. All rights reserved. Further information on the IEC is available from www.iec.ch. IEC has no responsibility for the placement and context in which the extracts and contents are reproduced ...

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