IEC_60300-3-1-2003.pdf

INTERNATIONALSTANDARDIEC60300-3-1Second edition2003-01Dependability management Part 3-1:Application guide Analysis techniques for dependability Guide on methodologyGestion de la sret de fonctionnement Partie 3-1:Guide dapplication Techniques danalyse de la sret de fonctionnement Guide mthodologiqueReference numberIEC 60300-3-1:2003(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editionsThe IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,thebase publication incorporating amendment 1 and the base publication incorporatingamendments 1 and 2.Further information on IEC publicationsThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating tothis publication,including its validity,is available in the IEC Catalogue ofpublications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publicationsThe on-line catalogue on the IEC web site(http:/www.iec.ch/searchpub/cur_fut.htm)enables you to search by a variety of criteria including text searches,technicalcommittees and date of publication.On-line information is also available onrecently issued publications,withdrawn and replaced publications,as well ascorrigenda.IEC Just Published This summary of recently issued publications(http:/www.iec.ch/online_news/justpub/jp_entry.htm)is also available by email.Please contact the CustomerService Centre(see below)for further information.Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC60300-3-1Second edition2003-01Dependability management Part 3-1:Application guide Analysis techniques for dependability Guide on methodologyGestion de la sret de fonctionnement Partie 3-1:Guide dapplication Techniques danalyse de la sret de fonctionnement Guide mthodologique IEC 2003 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.chXAFor price,see current cataloguePRICE CODECommission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60300-3-1 IEC:2003(E)CONTENTSFOREWORD.3INTRODUCTION.41Scope.52Normative references.53Definitions.64Basic dependability analysis procedure.74.1General procedure.74.2Dependability analysis methods.84.3Dependability allocations.104.4Dependability analysis.114.5Maintenance and repair analysis and considerations.135Selecting the appropriate analysis method.13Annex A(informative)Brief description of analysis techniques.16Bibliography.58Figure 1 General dependability analysis procedure.7Figure A.1 Temperature dependence of the failure rate.19Figure A.2 Fault tree for an audio amplifier.21Figure A.3 Sub-tree from FTA in Figure A.2.22Figure A.4 Event tree.24Figure A.5 Elementary models.26Figure A.6 Example of unit.28Figure A.7 State-transition diagram.29Figure A.8 Block diagram of a multiprocessor system.32Figure A.9 Petri net of a multiprocessor system.33Figure A.10 The HAZOP study procedure.37Figure A.11 Human errors shown as an event tree.41Figure A.12 Example Application of stressstrength criteria.43Figure A.13 Truth table for simple systems.44Figure A.14 Example.44Figure A.15 Cause and effect diagram.56Table 1 Use of methods for general dependability analysis tasks.9Table 2 Characteristics of selected dependability analysis methods.15Table A.1 Symbols used in the representation of the fault treee.22Table A.2 States of the unit.28Table A.3 Effects of failures in functional and diagnostic parts.29Table A.4 Transition rates.30Table A.5 Example of FMEA.35Table A.6 Basic guide words and their generic meanings.36Table A.7 Additional guide words relating to clock time and order or sequence.36Table A.8 Credible human errors.40Table A.9 Tr