IEC 61511-1:2016 Functional safety – Safety instrumented systems for the process industry sector – Part 1

IEC 61511-1:2016 is an international standard that gives requirements for the specification, design, installation, operation and maintenance of a safety instrumented system (SIS) so that it can be entrusted to achieve or maintain a safe state of the process. It was developed as a process sector implementation of IEC 61508:2010. It is Part 1 of the IEC 61511 series and covers framework, definitions, system, hardware and application programming requirements.

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Specification

2 sources

Body	IEC
Reference	IEC 61511-1
Edition year	2016
Status	published

Study notes

Prepared by technical committee TC 65/SC 65A, System aspects.
Publication date 2016-02-24; second edition (2.0), 175 pages.
A consolidated version exists as IEC 61511-1:2016+AMD1:2017 CSV, edition 2.1, dated 2017-08-16.
The corrigendum of September 2016 (COR1:2016) is included in this copy.
ICS classifications: 13.110 and 25.040.01; stability date 2029; ISBN 9782832231593.
Adopted in the US as ANSI/ISA-61511-1-2018/IEC 61511-1:2016+AMD1:2017 CSV.
Part 2 of the series (IEC 61511-2:2016) gives guidelines for the application of Part 1; Part 3 covers determination of required safety integrity levels.

Safety

Establishes performance targets based on safety integrity levels (SIL) to manage risk.
Covers the SIS lifecycle from initial specification through decommissioning.