IEC 61511-1 PDFIEC 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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Retrieved from ” https: IEC covers the design and management requirements for SISs throughout the entire safety life cycle. Please help improve this article by introducing citations to additional sources. From Wikipedia, the free encyclopedia. Relevant discussion may be found on the talk page. Safety functions allocated to the SIS are safety instrumented functions; the allocated risk reduction is related to the SIL.

Note, however, that is not harmonized under any directive of the European Commission. This page was last edited on 8 Mayat Views Read Edit View history.

It starts in the earliest phase of a project and continues through startup. For existing safety instrumented systems SIS designed and constructed in accordance with codes, standards, or practices prior to the issuance of this standard e. A hazard and risk analysis is used to identify the required safety functions and irc reduction for specified hazardous events. IEC covers the application of electrical, electronic and programmable electronic equipment.


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 615111 safety integrity level SIL. An SIS may implement one or more safety instrumented functions SIFswhich are designed and implemented to address a specific process hazard or hazardous event.

Functional Safety Standards – IEC vs. IEC | exida

The content of these national publications is identical to that of IEC This standard defines the functional safety requirements established by IEC in process industry sector terminology. It contains sections that cover modifications that come along later, along with maintenance activities and the eventual decommissioning activities.

This article relies largely or entirely on a single source. IEC provides good engineering practices for the application of safety instrumented systems in the process sector. IEC standard is a technical standard which sets out practices in the engineering of systems that ensure the safety of 6111-1 industrial process through the use of instrumentation. Articles needing additional references from March All articles needing iev references.

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IEC – Wikipedia

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

List of International Electrotechnical Commission standards. 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.


It primarily mirrors IEC in content with the exception that it contains a grandfathering clause:. When the required performance is not met, action should ie taken to close the ied, ensuring safe and reliable operation. Electrical standards Safety Industrial processes.

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Such systems are referred to as Safety 61511–1 Systems. The title of the standard is ” Functional safety – Safety instrumented systems for the process industry sector “.

The process sector standard does not cover nuclear power facilities or nuclear reactors. This means 61511- 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.

IEC is generic functional safety standard, providing the framework and core requirements for sector specific standard. 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.