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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List of International Electrotechnical Commission standards. The title of the standard is ” Functional safety – Safety instrumented systems for the process industry sector “.

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By using this site, you agree to the Terms of Use and Privacy Policy. This article relies largely or entirely on a single source. IEC provides good engineering practices for 611511-1 application of safety instrumented systems in the process sector. This page was last edited on 8 Mayat It starts in the earliest phase of a project and continues through startup. The process sector standard does not cover nuclear power facilities or nuclear reactors.

The content of these national publications is identical to that of IEC It primarily mirrors IEC in content with the exception that it contains a grandfathering clause:.

IEC 61511-11 the application of electrical, electronic and programmable electronic equipment.

Functional Safety Standards – IEC vs. IEC | exida

This document sets the standards for safety-related system design of hardware and software. While IEC does apply to equipment using pneumatic or hydraulic systems to manipulate final elements, 6151-1 standard does not cover the design and implementation of pneumatic or hydraulic logic solvers. Views Read Edit View history. This standard defines the functional safety requirements established by IEC in process industry sector terminology. Field data are collected through operational and mechanical integrity program activities to assess actual SIS performance.


Safety functions allocated to the SIS are safety instrumented 615111 the allocated risk reduction is related to the SIL.

Retrieved from ” https: For existing safety instrumented systems SIS designed and constructed in accordance with codes, standards, or practices prior to the issuance of this standard e. IEC covers the design and management requirements for SISs throughout the entire safety life cycle.

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Note, however, that is not harmonized under any directive of the European Commission. Electrical standards Safety Industrial processes. It contains sections that cover modifications that come 615511-1 later, along with maintenance activities and the eventual decommissioning activities.

Such systems are referred to as Safety Instrumented Systems. 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.

Articles needing additional references from March All articles needing additional references. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.


IEC is generic functional safety standard, providing the framework and core requirements for sector specific standard. This idc that in each of the member states of the European Union, the standard is published as a national standard.

When the required performance is not met, action should be taken to close the gap, ensuring safe and reliable operation. An SIS may implement one or more safety instrumented functions SIFswhich are designed and implemented to address a specific process hazard or hazardous event. A hazard and risk analysis is used to identify the required safety functions and risk reduction for specified hazardous events.

The process industry sector includes many types of manufacturing processes, such as 615511-1, petrochemical, chemical, pharmaceutical, pulp and 615111- and power. 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. 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.

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