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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 By using this site, you agree to the Terms of Use and Privacy Policy. 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. Safety functions allocated to the SIS are safety instrumented functions; the allocated risk reduction is related to the SIL.

Electrical standards Safety Industrial processes. A hazard and risk analysis is used to identify the required safety functions and risk reduction for specified hazardous events. This page was last edited on 8 Mayat It starts in the earliest phase of a project and continues through startup.

Functional Safety Standards – IEC vs. IEC | exida

This means that in each of the member states of the European Union, the standard is published as a national standard. Field data are collected through operational and mechanical integrity program activities to assess actual SIS performance.


Views Read Edit View history. IEC provides good engineering practices for the application of safety instrumented systems in the process sector.

IEC is generic functional safety standard, providing the framework and core requirements for sector specific standard. When the required performance is not met, action should be taken to close the gap, ensuring safe and reliable operation. Articles needing additional references from 6511-1 All articles needing additional references.

This document sets the standards for safety-related system design of hardware and software. The process industry sector includes 611511-1 types of manufacturing processes, such as refineries, petrochemical, chemical, pharmaceutical, pulp and paper, and power.

Relevant discussion may be found on the talk page. 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.

Retrieved from ” https: IEC covers the application of electrical, electronic and programmable electronic equipment. For existing safety instrumented systems SIS designed and constructed 615511-1 accordance with codes, standards, or practices prior to the issuance of this standard e.

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Note, however, that is not harmonized under any directive of the European Commission. 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. Please help improve this article by introducing citations to additional sources.


An SIS may implement one or more safety instrumented functions SIFswhich are designed and implemented to address a specific process hazard or hazardous event. The title of the standard is ” Functional safety – Safety instrumented systems for the process industry sector “.

IEC covers the design and management requirements for SISs throughout the entire safety life cycle. It primarily mirrors IEC in content with the exception that it contains a grandfathering clause:.

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From Wikipedia, 6111-1 free encyclopedia. The process sector standard does not cover nuclear power facilities or nuclear reactors. This article relies largely or entirely on a single source. This standard defines the functional safety requirements established by IEC in 61511-1 industry sector terminology.

It contains sections that cover modifications that come along later, along with maintenance activities and the eventual decommissioning activities. 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. List of International Electrotechnical Commission standards.