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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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An SIS is composed of a separate 6511-1 independent combination of sensors, logic solvers, final elements, and support systems that are designed and managed to achieve a specified safety integrity level SIL. IEC is generic functional safety standard, providing the framework and core requirements for sector specific standard.

Functional Safety Standards – IEC vs. IEC | exida

It starts in the earliest phase of a project and continues through startup. Such systems are referred to as Safety Instrumented Systems. This document sets the standards for safety-related system 615111-1 of hardware and software. By using this site, you agree to the Terms of Use and Privacy Policy. 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 The title of the standard is ” Functional safety – Safety instrumented systems for the process industry sector “. An SIS may implement one or more safety instrumented functions SIFswhich are designed and implemented to address a specific process hazard or hazardous event. Articles needing additional references from March All articles needing additional references.


It contains sections that cover modifications that come along later, along with maintenance activities and the eventual decommissioning activities. Note, however, that is not harmonized under any directive of the 661511-1 Commission. A hazard and risk analysis is used to identify the required safety functions and risk reduction for specified hazardous events. Field data are collected through operational and mechanical integrity program activities to assess actual SIS performance.

Electrical standards Safety Industrial processes. When the required performance uec not met, action should be taken to close the gap, ensuring safe and reliable operation.

IEC covers the design and management requirements for SISs throughout the entire safety life cycle. From Wikipedia, the free encyclopedia.

This page was last edited on 8 Mayat IEC standard is a technical standard which sets out isc in the engineering of systems that ensure the safety of an industrial process through the use of instrumentation. Safety functions allocated to the SIS are safety instrumented functions; the allocated risk reduction is related to the SIL.

Retrieved from ” https: Please help improve this article by introducing citations to additional sources. It primarily mirrors IEC in content with the exception that it contains a grandfathering clause:.


For existing safety instrumented systems SIS designed and constructed in accordance with codes, standards, or practices prior to the issuance of this standard e. Views Read Edit View history.

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. This standard defines the functional safety requirements established by IEC in process industry sector terminology.

This article relies largely or entirely on a single source. IEC covers the application of electrical, electronic and programmable electronic equipment.

Relevant discussion may be found on the talk page. This means that in each of the member states of the European Union, the standard is published as a national 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.

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List of International Electrotechnical Commission standards. IEC provides good engineering practices for the application of 61151-1 instrumented systems in the process sector. The process industry sector includes many types of manufacturing processes, such as refineries, petrochemical, chemical, pharmaceutical, pulp and paper, and power.