What Does IEC 61508 Consist Of?

The standard is published in parts as shown in the table below.

Only parts 1 to 4 contain normative requirements.

IEC 61508 Part Structure

This text contains extracts from the IEC Functional Safety Zone. All such extracts are copyright of International Electrotechnical Commission © 2005, IEC, Geneva, Switzerland. All rights reserved. IEC has no responsibility for the placement and context in which the extracts are reproduced. This notice takes precedence over any general copyright statement.