1、BRITISH STANDARD BS IEC 60300-3-5:2001 Dependability management Part 3-5: Application guide Reliability test conditions and statistical test principles ICS 01.040.03 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS IEC 60300-3-5:2001 This British Standard, having been prepare
2、d under the direction of the Management Systems Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 July 2001 BSI 07-2001 ISBN 0 580 37393 2 National foreword This British Standard reproduces verbatim IEC 60300-3-5:2001 and implements it as the
3、UK national standard. IEC 60300-3-5 supersedes IEC 60605-1, and therefore BS IEC 60300-3-5 supersedes BS 5760-10.1:1993. The UK participation in its preparation was entrusted to Technical Committee DS/1, Dependability and terotechnology, which has the responsibility to: A list of organizations repre
4、sented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other
5、, publications may contain identifiers from both systems. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using
6、the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity fr
7、om legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the
8、 UK. Summary of pages This document comprises a front cover, an inside front cover, the IEC title page, pages 2 to 70, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Da
9、te CommentsNORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 60300-3-5 Premire dition First edition 2001-03 Gestion de la sret de fonctionnement Partie 3-5: Guide dapplication Conditions des essais de fiabilit et principes des essais statistiques Dependability management Part 3-5: Application guid
10、e Reliability test conditions and statistical test principlesCommission Electrotechnique InternationaleInternational Electrotechnical Commission IEC 2001 Droits de reproduction rservs Copyright - all rights reserved Aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque fo
11、rme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de lditeur. 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 permiss
12、ion in writing from the publisher. International Electrotechnical Commission 3, rue de Varemb Geneva, Switzerland Telefax: +41 22 919 0300 e-mail: inmailiec.ch IEC web site http:/www.iec.ch 1002:5300306CEISBBSIEC6030035:2001 07-2001 CONTENTS Page FOREWORD 5 INTRODUCTION 6 Clause 1 Scope 7 2 Normativ
13、e references. 8 3 Definitions, symbols and abbreviations 9 3.1 Terms and definitions . 9 3.2 Abbreviations.14 3.3 Legends for figures15 4 General considerations .15 4.1 Introductory remarks and legal considerations .15 4.2 Objectives of reliability testing .16 4.3 Classification of reliability tests
14、17 4.3.1 Classification according to general purpose .17 4.3.2 Classification according to the test place .18 4.3.3 Classification according to time of receiving the results .19 4.4 Statistical test plans.19 4.5 Test specification.19 4.6 Utilisation of the test result 21 5 Test categories related to
15、 general test purpose 22 5.1 Compliance testing 22 5.1.1 Terms used in reliability compliance testing .25 5.1.2 Requirements for reliability compliance testing 27 5.1.3 Testing for success/failure ratio .28 5.2 Reliability estimation testing 28 5.3 Reliability comparison testing 28 6 Test conditions
16、 .29 6.1 General principles of selecting test conditions .29 6.2 Pre-test conditions and corrective maintenance.30 6.3 Specification of operating and environmental test conditions .30 6.3.1 Operating conditions30 6.3.2 Environmental conditions.32 6.4 Specification of maintenance conditions 32 6.4.1
17、Preventive maintenance.32 6.4.2 Corrective maintenance .33 7 Data collection and failure classification .34 7.1 Monitoring of test item performance.34 7.1.1 Functional parameters .34 7.1.2 Measuring method .34 7.1.3 Monitoring interval .34 7.2 Failure types34 7.2.1 Classes of non-relevant failures.3
18、5 7.2.2 Special classes of failure .36 Page2 1002:5300306CEISBPage2 BSIEC6030035:2001 07-2001 Page 7.3 Failure analysis .37 7.4 Relevant test time37 8 Test data analysis.38 8.1 Non-repaired items 38 8.2 Repaired items 38 8.3 Failure data structures (censoring) 38 8.4 Failure models.40 8.4.1 Statisti
19、cal nature40 8.4.2 Failure rate 40 8.4.3 Failure intensity .41 8.4.4 Concluding remarks.42 9 Statistical tools and analysis procedure 43 9.1 Description of tools43 9.2 Description of the relationship between tools .45 9.3 Analysis procedure 48 9.4 Final conclusions and possible action to be taken52
20、9.4.1 Acceptance52 9.4.2 Conditional acceptance53 9.4.3 Rejection .53 10 Reporting53 10.1 Test logs and data records 53 10.2 Recording of test conditions and observations .54 10.3 Failure reports .54 10.3.1 From the test operator .54 10.3.2 From the repair personnel55 10.3.3 From the failure analysi
21、s personnel .56 10.4 Failure summary record.56 10.5 Failed replacement items and spare part inventory (optional) 56 10.6 Final report57 Annex A (informative) Data screening 58 Annex B (informative) General examples65 Annex C (informative) Relationship between the existing IEC 60605 series and the ne
22、w statistical tools.69 Bibliography70 Figure 1 Comparison between a truncated sequential test and a time/failure terminated test with the same risks .23 Figure 2 Expected accumulated relevant test time to decision as a function of the true mean time between failures24 Figure 3 Operating characterist
23、ic curves for test plans B.5 and B.8 (examples taken from IEC 61124)26 Figure 4 Examples of time to failure .38 Figure 5a Example of time censoring39 Figure 5b Example of failure censoring 39 Figure 6 Example of multiple censoring39 Figure 7 Example of operating times between failures for a single r
24、epaired item 40 Page3 1002:5300306CEISBPage3 BSIEC6030035:2001 07-2001 Page Figure 8 Example of increasing trend in times between failure of a single repaired item (failure intensity)41 Figure 9 Example of cumulative number of failures versus operating time for a single repaired item with a constant
25、 failure intensity42 Figure 10 Types of analyses available for non-repaired items 91 Figure 11 Types of analyses available for repaired items .93 Figure 12 Tools available for estimation .97 Figure 13 Tools available for compliance testing 51 Figure 14 Tools available for comparison testing52 Figure
26、 A.1 Example of Pareto diagram .59 Figure A.2 Example of classification of faults .60 Figure A.3 Example of mixtures of different failure modes 61 Figure A.4 Example of mixture of populations.62 Figure A.5 Example of diagnostic problems63 Figure A.6 Example of clusters of data.64 Figure C.1 Details
27、of IEC 60605-469 Table 1 Type of statistical test plans 23 Table 2 Comparison of statistical test plans .24 Table 3 Overview of cases in a hypothesis test (example from test plan B.5 in IEC 61124)26 Table 4 Overview of appropriate models for failure data analysis .42 Table 5 Procedures for goodness
28、of fit tests.43 Table 6 Procedures for point and interval estimation of reliability measures .44 Table 7 Procedures for compliance testing of dependability measures .44 Table 8 Procedures for comparison tests .45 Page4 1002:5300306CEISBPage4 BSIEC6030035:2001 07-2001 INTERNATIONAL ELECTROTECHNICAL C
29、OMMISSION _ DEPENDABILITY MANAGEMENT Part 3-5: Application guide Reliability test conditions and statistical test principles FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Nation
30、al Committees). The object of the 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, the IEC publishes International Standards. Their preparation is entrusted to technical
31、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. The IEC collaborates closely with the International Organiz
32、ation for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technic
33、al committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports or guides and they are accepted by the National Committees
34、 in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or re
35、gional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements
36、of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60300-3-5 has been prepared by IEC technical committee 56: Dependability. This first edition of IEC 60300-3-5 cancels an
37、d replaces the first edition of IEC 60605-1 (1978) as well as its amendment 1 (1982). The text of this standard is based on the following documents: FDIS Report on voting 56/722/FDIS 56/730/RVD Full information on the voting for the approval of this standard can be found in the report on voting indi
38、cated in the above table. Annexes A, B and C are for information only. The committee has decided that the contents of this publication will remain unchanged until 2004. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. Page5 1002:5300306CEISBPag
39、e5 BSIEC6030035:2001 07-2001 INTRODUCTION This part of IEC 60300 replaces IEC 60605-1 and is considered as an application guide for the series of standards on test conditions as well as on statistical tools used to analyse data from reliability tests of repaired or non-repaired items. This standard
40、is meant as a guide to the appropriate selection of applicable standards on test conditions and statistical analysis. It is also a general guide to planning, performing and analysing data from reliability tests. By using this standard, the user will be able to select other standards that are appropr
41、iate and necessary for planning, carrying out and analysing data generated by a specific reliability test. This standard therefore refers to statistical tools for analysing constant and non-constant failure intensity and failure rate and other measures such as success/failure ratio. This standard re
42、fers to the environmental and operational conditions and to the statistical methods available as IEC standards, since both should be selected at the same time. Page6 1002:5300306CEISBPage6 BSIEC6030035:2001 07-2001 DEPENDABILITY MANAGEMENT Part 3-5: Application guide Reliability test conditions and
43、statistical test principles 1 Scope This part of IEC 60300 provides guidelines for the planning and performing of reliability tests and the use of statistical methods to analyse test data. It describes the tests related to repaired and non-repaired items together with tests for constant and non-cons
44、tant failure intensity and constant and non-constant failure rate. It is applicable: when reliability testing is called for in a contract, either specifically or by inference; when planning a reliability test; during a reliability test; when analysing data from and reporting on the outcome of a reli
45、ability test. This standard also applies when a contract or test plan specifies the use of IEC statistical standards, without specific reference to a particular standard. Many different tests are performed during the development, design verification and design validation of a new product. The purpos
46、e of these tests is to discover weaknesses in the design and to undertake actions to eliminate these weaknesses and thereby improve performance, quality, safety, robustness, reliability and availability and reduce costs. This standard covers only the cases where statistical methods are used to analy
47、se test data although the guidelines on test conditions, test planning and test documentation will be applicable to most tests. The following topics are important and although discussed in this standard are more fully dealt with in their respective standards: availability testing (see IEC 61070); te
48、sting of maintainability measures (see IEC 60706) and measures of reliability growth (see IEC 61014 and IEC 61164). This standard does not cover software testing (see IEC 61704), however it is applicable to items containing both hardware and software. This standard is therefore applicable to a wide
49、range of products including consumer, industrial, military and aerospace applications. This part of IEC 60300 covers analysis for verification, determination, comparison and success/failure ratio evaluation. A flow chart giving guidance for planning the statistical treatment of reliability test data is shown in clause 9. Although not described in this standard, the considerations and sta
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