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IEC 61511-3

IEC 61511-3:2016
Functional safety - Safety instrumented systems for the process industry sector - Part 3: Guidance for the determination of the required safety integrity levels
IEC 61511-3:2016 is available as IEC 61511-3:2016 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61511-3:2016 applies when functional safety is achieved using one or more SIF for the protection of either personnel, the general public, or the environment; may be applied in non-safety applications such as asset protection; illustrates typical hazard and risk assessment methods that may be carried out to define the safety functional requirements and SIL of each SIF; illustrates techniques/measures available for determining the required SIL; provides a framework for establishing SIL but does not specify the SIL required for specific applications; does not give examples of determining the requirements for other methods of risk reduction. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: Additional H&RA example(s) and quantitative analysis consideration annexes are provided.
Redline version

All the changes between the new edition and previous edition of the publication are highlighted with track changes mode.


Technical committee

TC 65/SC 65A System aspects


Cyber security - Functional safety - Smart city - Smart manufacturing - Industrie 4.0 - Industry 4.0 - Automation
Publication typeInternational Standard
Publication date2016-07-21



Stability date2027
ISBN number9782832232125
File size7.31 MB

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