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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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. Please help improve this article by introducing citations to additional sources. The process industry sector includes many types of manufacturing processes, such as refineries, petrochemical, chemical, 6151-1, pulp and paper, and power.

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. 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. 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

IEC covers the application of electrical, electronic 61511- programmable electronic equipment. Note, however, that is not harmonized under any directive of the European Commission.

It starts in the earliest phase of a project and continues through startup. This standard defines the functional safety requirements established by IEC in process industry sector terminology. The process sector standard does not cover nuclear power facilities or nuclear reactors. By using this site, you agree to the Terms of Use and Privacy Policy.

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From Wikipedia, the free encyclopedia. A hazard and risk analysis is used to identify the required safety functions and risk reduction for specified hazardous events. Views Read Edit View history. IEC provides good engineering practices for the application of safety instrumented systems in the process sector.

The content of these national publications 61511-11 identical to that of IEC 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 March All articles needing additional references.

Field data are 6151-11 through operational and mechanical integrity program activities to assess actual SIS performance. Safety functions allocated to the SIS are safety instrumented functions; the allocated risk reduction is related to the SIL.

List of International Electrotechnical Commission standards. This article relies largely or entirely on a single source.

This document sets the standards for safety-related system design of hardware and software. 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.


IEC covers the design and management requirements for SISs throughout the entire safety life cycle.

IEC – Wikipedia

The title of the standard is ” Functional safety – Safety instrumented systems for the process industry sector “.

IEC is generic functional safety standard, providing the framework and core requirements for sector specific standard. Such systems are referred to as Safety Instrumented Systems. It primarily mirrors IEC in content with the exception that it contains a grandfathering clause:.

Electrical standards Safety Industrial processes. 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.

Relevant discussion may be found on the talk page. Retrieved from ” https: It contains sections that cover modifications that come along later, along with maintenance activities and the eventual decommissioning activities. This means that in each of the 6111-1 states of the European Union, the standard is published as a national standard.