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 process sector standard does not cover nuclear power facilities or nuclear reactors. 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.

Views Read Edit View history. 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. This article relies largely or entirely on 611511-1 single source. An SIS is composed of a separate and independent combination of sensors, logic solvers, final elements, and support systems that are designed and managed 61511-1 achieve a specified safety integrity level SIL.

Retrieved from ” https: This page was last edited on 8 Mayat For existing safety instrumented systems SIS designed and constructed in accordance with codes, standards, or practices prior to the issuance of this standard e. It starts in the earliest phase of a project and continues through startup.


Relevant discussion may be found on the talk page. An SIS may implement one or more safety instrumented functions SIFswhich are designed and implemented to address a specific process hazard or hazardous event.

It contains sections that cover modifications that come along later, along with maintenance activities and the eventual decommissioning activities. The title of the standard is ” Functional safety – Safety instrumented systems for the process industry sector “. Field data are collected through operational and mechanical integrity program activities to assess actual SIS performance.

IEC provides good engineering practices for the application of safety instrumented systems in the process sector. The process industry sector includes many types of manufacturing kec, such as refineries, petrochemical, chemical, pharmaceutical, pulp and paper, and power.

IEC – Wikipedia

The content of these national publications is identical to that of IEC IEC is generic functional safety standard, providing the framework and core requirements for sector specific standard. List of International Electrotechnical Commission standards.

When the required performance is not met, action should be taken to close the gap, ensuring safe and reliable operation. This standard defines the functional safety requirements established by IEC in process industry sector terminology. This document sets the standards for safety-related system design of hardware and software.

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Electrical standards Safety Industrial processes. Note, however, that is not harmonized under any directive of the European Commission.


A hazard and risk analysis is used to identify the required safety functions and risk reduction for specified hazardous events. Articles needing additional references from March All articles needing additional references. By using this site, you agree to the Terms of Use and Privacy Policy.

Please help improve this article by introducing citations to additional sources. IEC covers the application of electrical, electronic and programmable electronic equipment. From Wikipedia, the free encyclopedia. This means that in each of the member states of the European Union, the standard is published as a national standard.

Functional Safety Standards – IEC vs. IEC | exida

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. Safety functions allocated to the SIS are safety instrumented functions; the allocated risk reduction is lec to the SIL. IEC covers the design and management requirements for 61511-11 throughout the entire safety life cycle.

Such systems are referred to as Safety Instrumented Systems. It primarily mirrors IEC in content with the exception that it contains a grandfathering clause:.