BS EN 61511-3:2017

This standard BS EN 61511-3:2017 Functional safety. Safety instrumented systems for the process industry sector is classified in these ICS categories:

• 25.040.01 Industrial automation systems in general
• 25.040.40 Industrial process measurement and control
• 35.240.50 IT applications in industry
• 01.040.35 Information technology (Vocabularies)
• 13.110 Safety of machinery

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.