EN 62308:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zanesljivost opreme - Metode ocenjevanja zanesljivosti (IEC 62308:2006)Zuverlässigkeit von Geräten - Verfahren zur ZuverlässigkeitsbewertungFiabilité de l'équipement - Méthodes d'évaluation de la fiabilitéEquipment reliability - Reliability assessment methods21.020Characteristics and design of machines, apparatus, equipment03.120.01Kakovost na splošnoQuality in generalICS:Ta slovenski standard je istoveten z:EN 62308:2006SIST EN 62308:2007en01-februar-2007SIST EN 62308:2007SLOVENSKI
STANDARD
EUROPEAN STANDARD EN 62308 NORME EUROPÉENNE
EUROPÄISCHE NORM December 2006
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2006 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62308:2006 E
ICS 03.120.01; 03.120.99
English version
Equipment reliability -
Reliability assessment methods (IEC 62308:2006)
Fiabilité de l'équipement -
Méthodes d'évaluation de la fiabilité (CEI 62308:2006)
Zuverlässigkeit von Geräten -
Verfahren zur Zuverlässigkeitsbewertung (IEC 62308:2006)
This European Standard was approved by CENELEC on 2006-11-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
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Foreword The text of document 56/1110/FDIS, future edition 1 of IEC 62308, prepared by IEC TC 56, Dependability, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62308 on 2006-11-01. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop)
2007-08-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2009-11-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 62308:2006 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 61751 NOTE
Harmonized as EN 61751:1998 (not modified). __________
- 3 - EN 62308:2006 Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-191 1990 International Electrotechnical Vocabulary (IEV)
Chapter 191: Dependability and quality of service - -
IEC 60300-1 -1) Dependability management
Part 1: Dependability management systems EN 60300-1 20032)
IEC 60300-3-1 2003 Dependability management
Part 3-1: Application guide - Analysis techniques for dependability - Guide on methodology EN 60300-3-1 2004
IEC 60300-3-2 -1) Dependability management
Part 3-2: Application guide - Collection of dependability data from the field EN 60300-3-2 20052)
IEC 60300-3-3 -1) Dependability management
Part 3-3: Application guide - Life cycle costingEN 60300-3-3 20042)
IEC 60300-3-4 1996 Dependability management
Part 3: Application guide - Section 4: Guide to the specification of dependability requirements - -
IEC 60300-3-5 2001 Dependability management
Part 3-5: Application guide - Reliability test conditions and statistical test principles - -
IEC 60300-3-9 -1) Dependability management
Part 3: Application guide - Section 9: Risk analysis of technological systems - -
IEC 60300-3-11 -1) Dependability management
Part 3-11: Application guide - Reliability centred maintenance - -
IEC 60300-3-12 -1) Dependability management
Part 3-12: Application guide - Integrated logistic support EN 60300-3-12 20042)
IEC 60812 -1) Analysis techniques for system reliability - Procedure for failure mode and effects analysis (FMEA) EN 60812 20062)
1) Undated reference. 2) Valid edition at date of issue. SIST EN 62308:2007

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Publication Year Title EN/HD Year IEC 61025 -1) Fault tree analysis (FTA) HD 617 S1 19922)
IEC 61078 -1) Analysis techniques for dependability - Reliability block diagram and Boolean methods EN 61078 20062)
IEC 61160 -1) Design review EN 61160 20052)
IEC 61165 -1) Application of Markov techniques EN 61165 20062)
IEC 61508
Series Functional safety of electrical/electronic/programmable electronic safety-related systems EN 61508 Series
IEC 61649 -1) Goodness-of-fit tests, confidence intervals and lower confidence limits for Weibull distributed data - -
IEC 61709 -1) Electronic components - Reliability - Reference conditions for failure rates and stress models for conversion EN 61709 19982)
IEC 61710 -1) Power law model - Goodness-of-fit tests and estimation methods - -
IEC 61713 -1) Software dependability through the software life-cycle processes - Application guide - -
IEC 61882 -1) Hazard and operability studies (HAZOP studies) - Application guide - -
IEC/TR 62380 -1) Reliability data handbook - Universal model for reliability prediction of electronics components, PCBs and equipment - -
NORME INTERNATIONALECEIIEC INTERNATIONAL STANDARD 62308Première éditionFirst edition2006-07 Fiabilité de l’équipement – Méthodes d'évaluation de la fiabilité
Equipment reliability – Reliability assessment methods
Pour prix, voir catalogue en vigueur For price, see current catalogue IEC 2006
Droits de reproduction réservés
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Copyright - all rights reserved Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch
Web: www.iec.ch CODE PRIX PRICE CODE XA Commission Electrotechnique InternationaleInternational Electrotechnical CommissionSIST EN 62308:2007

62308  IEC:2006 – 3 – CONTENTS FOREWORD.7 INTRODUCTION.11
1 Scope.13 2 Normative references.13 3 Terms and definitions.15 4 Abbreviations.17 5 Symbols.17 6 Introduction to reliability assessment.19 6.1 Introductory remarks.19 6.2 Description of reliability assessment.19 7 Management of reliability assessment process.27 7.1 Purpose of reliability assessment.27 7.2 Documentation.39 8 Data needs.39 8.1 Input data.39 8.2 Data sources and types.41 8.3 Data collection, storage, and retrieval.43 9 Reliability assessment methods.43 9.1 Introduction.43 9.2 Similarity analysis.47 9.3 Durability analysis.51 9.4 Sensitivity testing and analysis.53 9.5 Handbook predictions.57 9.6 Limitations of reliability assessment results.61 10 Considerations for selecting reliability assessment methods.61 11 Reliability assessment process improvement.65 11.1 General.65 11.2 Validating reliability assessment results.65 11.3 Improving the reliability assessment process.65
Annex A (informative) Similarity analysis examples.69 Annex B (informative) Durability analysis.93
Bibliography.107
Figure 1 – Methods requiring a reliability assessment as input.27 Figure 2 – Stages of product life cycle.35 Figure 3 – Reliability assessment and improvement process.45 Figure A.1 – Example similarity analysis flowchart.85
62308  IEC:2006 – 5 – Table 1 – Example of constant rate reliability measures.23 Table 2 – IEC Standards providing guidance on methods.29 Table A.1 – Example characteristic differences.83 Table A.2 – Example high-level similarity analysis spreadsheet.87 Table A.3 – Example low-level similarity analysis spreadsheet.89 Table A.4 – Example process difference factor tables.91 Table B.1 – Values for exponent B for equations (B.7) and (B.8).101 SIST EN 62308:2007

62308  IEC:2006 – 7 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
EQUIPMENT RELIABILITY − RELIABILITY ASSESSMENT METHODS
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5
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