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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Safety functions allocated to the SIS are safety 615111 functions; the allocated risk reduction is related to the SIL. The essential roles of the various personnel assigned responsibility for the SIS should be defined and procedures developed, as necessary, to support the consistent execution of their responsibilities. Field data are collected through operational and mechanical integrity program activities to assess actual SIS performance.

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.

Retrieved from ” https: It contains sections that cover modifications that come along later, along with ifc activities and the eventual decommissioning activities.

It starts in the earliest phase of a project and continues through startup. IEC is generic functional safety standard, providing the framework and core requirements for sector specific standard. Please help improve this article by introducing citations to additional sources. A hazard and risk analysis is used to identify the required safety functions and risk reduction for specified hazardous events.


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This means that in each of the member states of the European Union, the standard is published as a national standard. This document sets the standards for safety-related system design of hardware and software.

Electrical standards Safety Industrial processes. 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. By using this site, you agree to the Terms of Use and Privacy Policy.

List of International 661511-1 Commission standards. IEC provides good engineering practices for the application of safety instrumented systems in the process sector. The title of the standard is ” Functional safety – Safety instrumented systems for the process industry sector “.

From Wikipedia, the free encyclopedia. Relevant discussion may be found on the talk page. IEC standard is a technical standard which sets out practices in the engineering of systems that ensure the safety of an industrial 61511–1 through the use of instrumentation.

The process industry sector includes many types of manufacturing processes, such as refineries, petrochemical, chemical, pharmaceutical, pulp and paper, and power.

IEC – Wikipedia

An SIS may implement one or more safety instrumented functions SIFswhich are designed and implemented to address a specific process hazard or hazardous event. When the required performance is not met, action should ied taken to close the gap, ensuring safe and reliable operation.


The content of these national publications is identical to that of IEC Such systems are referred to as Safety Instrumented Systems.

Views Read Edit View history. IEC covers the design and management requirements for SISs throughout the entire safety life cycle. This standard defines the functional safety requirements established by IEC in process industry sector terminology. Note, however, that is not harmonized under any directive of the European Commission.

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It primarily mirrors IEC in content with the exception that it contains a grandfathering clause:. This page was last edited on 8 Mayat The process sector standard does not cover nuclear power facilities or nuclear reactors. IEC covers the application of electrical, electronic and programmable electronic equipment.

For existing safety instrumented systems SIS 6151-1 and constructed in accordance with codes, standards, or practices prior to the issuance of ie standard e. Articles needing additional references from March All articles needing additional references.