IEC 61511-1 PDF

INTERNATIONAL. STANDARD. IEC. First edition. Functional safety –. Safety instrumented systems for the process industry sector –. Part 1. IEC FUNCTIONAL SAFETY – SAFETY INSTRUMENTED SYSTEMS FOR THE PROCESS INDUSTRY SECTOR – Part 1: Framework, definitions. BS IEC This British Standard was published under the authority of the Standards Policy and. Strategy Committee on. 12 March.

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The content of these national publications is identical to that of IEC Electrical standards Safety Industrial processes. This page was last edited on 8 Mayat When the required performance is not met, action should be taken to close the gap, ensuring safe and reliable operation.

A hazard and risk analysis is used to identify the required safety functions and risk reduction for specified hazardous events.

This document sets the standards for ic system design of hardware and software. It starts in the earliest phase of a project and continues through startup. List of International Electrotechnical Commission standards.

Views Read Edit View history. Such systems are referred to as Safety Instrumented Systems. Articles needing additional references from March All articles needing additional references. Relevant discussion may be found on the talk page.

The essential roles of the various personnel assigned responsibility for the Iiec should be defined and procedures developed, as necessary, to support the consistent execution of their responsibilities. It contains sections that cover modifications that come along later, along with maintenance activities and the eventual decommissioning activities.


Please help improve this article by introducing citations to additional sources. The process industry sector includes many types of manufacturing processes, such as refineries, petrochemical, chemical, pharmaceutical, pulp and paper, and power. Field data are collected through operational and iiec integrity program activities to assess actual SIS performance. By using this site, you agree to the Terms of Use and Privacy Policy.

Retrieved from ic https: The title of the standard is ” Functional safety – Safety instrumented systems for the process industry sector “.

This means that in each of the member states of the European Union, the standard is published as a national standard. This standard defines ie functional safety requirements established by IEC in process industry sector terminology. Note, however, that is not harmonized under any directive of the European Commission. IEC covers the application of electrical, electronic and programmable electronic equipment.

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Safety functions allocated to the SIS are safety instrumented jec the allocated risk reduction is related to the SIL. IEC is generic functional safety standard, providing the framework and core requirements for sector specific standard. An SIS may implement one or more safety instrumented functions SIFswhich are designed and implemented to address a specific process hazard or hazardous event. IEC provides good engineering practices for the application of safety instrumented systems in the process sector.


While IEC does apply to equipment using pneumatic or hydraulic systems to manipulate final elements, the standard does not cover the design and implementation of pneumatic or hydraulic logic solvers.

Functional Safety Standards – IEC vs. IEC | exida

For existing safety instrumented systems SIS designed and constructed in accordance with codes, standards, or practices prior to the issuance of this standard e. This article relies largely or entirely on a single source.

IEC standard is a technical standard which sets out practices in the engineering of systems that ensure the safety of an industrial process through the use of instrumentation. It primarily mirrors IEC in content with the exception that it contains a grandfathering clause:. An SIS is composed of a separate and independent combination of sensors, logic solvers, final elements, and support systems that are designed and managed to achieve a specified safety integrity level SIL.

From Wikipedia, the free encyclopedia. The process sector standard does not cover nuclear power facilities or nuclear reactors. IEC covers the design and management requirements for SISs throughout the entire safety life cycle.