EN 61508-5:2001

Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels

Provides information on the underlying concepts of risk and the relationship of risk to safety integrity (see annex A); a number of methods that will enable the safety integrity levels for the E/E/PE safety-related systems, other technology safety-related systems and external risk reduction facilities to be determined (see annexes, B, C, D and E) Intended for use by technical committees in the preparation of standards in accordance with the principles contained in IEC Guide 104 and ISO/IEC Guide 51. EN 61508 is also intended as a stand-alone standard.

Funktionale Sicherheit sicherheitsbezogener elektrischer/elektronischer/programmierbarer elektronischer Systeme - Teil 5: Beispiele zur Ermittlung der Stufe der Sicherheitsintegrität (safety integrity level)

Sécurité fonctionnelle des systèmes électriques/électroniques/électroniques programmables relatifs à la sécurité - Partie 5: Exemples de méthodes de détermination des niveaux d'intégrité de sécurité

Fournit des informations sur les concepts sous-jacents à la notion de risque et les liens entre le risque et l'intégrité de sécurité (voir annexe A), des méthodes qui permettront d'assurer le niveau d'intégrité de sécurité des systèmes E/E/PE relatifs à la sécurité; des systèmes relatifs à la sécurité basés sur d'autres technologies et des dispositifs externes de réduction de risque (voir annexes, B, C, D et E). Destinées à être utilisées par tous les comités d'études pour la mise au point de leurs normes, conformément aux principes décrits dans le Guide CEI 104 et dans le Guide ISO/CEI 51. La EN 61508 est également prévue pour une utilisation en tant que norme autonome.

Funkcijska varnost električnih/elektronskih/programirljivih elektronskih varnostnih sistemov - 5. del: Primeri metod za ugotavljanje nivojev celovite varnosti (IEC 61508-5:1998 + popravek 1999)

General Information

• Status: Withdrawn
• Publication Date: 20-Dec-2001
• Withdrawal Date: 31-Jul-2004
• ICS: 25.040.40 - Industrial process measurement and control
• Technical Committee: CLC/SR 65A - System aspects
• Drafting Committee: IEC/SC 65A - IEC_SC_65A
• Parallel Committee: IEC/SC 65A - IEC_SC_65A
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-May-2013
• Completion Date: 01-May-2013
• Ref Project: SIST EN 61508-5:2007 - Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 5: Examples of methods for the determination of safety integrity levels

Relations

• Replaced By: EN 61508-5:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels
• Effective Date: 28-Jan-2023

Standards Content (Sample)

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EUROPEAN STANDARDEN 61508-5NORME EUROPÉENNEEUROPÄISCHE NORMDecember 2001CENELECEuropean Committee for Electrotechnical StandardizationComité Européen de Normalisation ElectrotechniqueEuropäisches Komitee für Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B - 1050 Brussels© 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 61508-5:2001 EICS 25.040.40English versionFunctional safety of electrical/electronic/programmable electronicsafety-related systemsPart 5: Examples of methods for the determinationof safety integrity levels(IEC 61508-5:1998 + corrigendum 1999)Sécurité fonctionnelle des systèmesélectriques/électroniques/électroniquesprogrammables relatifs à la sécuritéPartie 5: Exemples de méthodes dedétermination des niveaux d'intégritéde sécurité(CEI 61508-5:1998 + corrigendum 1999)Funktionale Sicherheitsicherheitsbezogener elektrischer/elektronischer/programmierbarerelektronischer SystemeTeil 5: Beispiele zur Ermittlung derStufe der Sicherheitsintegrität(safety integrity level)(IEC 61508-5:1998 + Corrigendum 1999)This European Standard was approved by CENELEC on 2001-07-03. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions (English, French, German). A version in any otherlanguage made by translation under the responsibility of a CENELEC member into its own language andnotified to the Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.



EN 61508-5:2001- 2 -ForewordThe text of the International Standard IEC 61508-5:1998 including its corrigendum April 1999,prepared by SC 65A, System aspects, of IEC TC 65, Industrial-process measurement and control,was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 61508-5on 2001-07-03 without any modification.The following dates were fixed:–latest date by which the EN has to be implementedat national level by publication of an identicalnational standard or by endorsement(dop)2002-08-01–latest date by which the national standards conflictingwith the EN have to be withdrawn(dow)2004-08-01Annexes designated "normative" are part of the body of the standard. Annexes designated "informative" are given for information only. In this standard, annex ZA is normative and annexes A, B, C, D, E and F are informative.Annex ZA has been added by CENELEC.IEC 61508 is a basic safety publication covering the functional safety of electrical, electronic andprogrammable electronic safety-related systems. The scope states:"This International Standard covers those aspects to be considered when electrical/electronic/programmable electronic systems (E/E/PESs) are used to carry out safety functions. A major objectiveof this standard is to facilitate the development of application sector international standards by thetechnical committees responsible for the application sector. This will allow all the relevant factorsassociated with the application, to be fully taken into account and thereby meet the specific needs ofthe application sector. A dual objective of this standard is to enable the development ofelectrical/electronic/ programmable electronic (E/E/PE) safety-related systems where applicationsector international standards may not exist".The CENELEC Report R0BT-004, ratified by 103 BT (March 2000) accepts that some IEC standards,which today are either published or under development, are sector implementations of IEC 61508. Forexample: IEC 61511, Functional safety - Safety instrumented systems for the process industry sector; IEC 62061, Safety of machinery – Functional safety of electrical, electronic and programmableelectronic control systems; IEC 61513, Nuclear power plants – Instrumentation and control for systems important to safety –General requirements for systems.The railways sector has also developed a set of European Standards (EN 50126; EN 50128 andprEN 50129).NOTE
EN 50126 and EN 50128 were based on earlier drafts of IEC 61508.
prEN 50129 i
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