EN 60300-3-1:2004

SLOVENSKI STANDARD
01-januar-2007
Upravljanje zagotovljivosti - 3-1. del: Vodilo za uporabo - Tehnike analiziranja
zagotovljivosti - Vodilo za metodologijo (IEC 60300-3-1:2003)
Dependability management -- Part 3-1: Application guide - Analysis techniques for
dependability - Guide on methodology
Zuverlässigkeitsmanagement -- Teil 3-1: Anwendungsleitfaden - Verfahren zur Analyse
der Zuverlässigkeit - Leitfaden zur Methodik
Gestion de la sûreté de fonctionnement -- Partie 3-1: Guide d'application - Techniques
d'analyse de la sûreté de fonctionnement - Guide méthodologique
Ta slovenski standard je istoveten z: EN 60300-3-1:2004
ICS:
03.120.01 Kakovost na splošno Quality in general
21.020 =QDþLOQRVWLLQQDþUWRYDQMH Characteristics and design of
VWURMHYDSDUDWRYRSUHPH machines, apparatus,
equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60300-3-1
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2004

ICS 03.120.30;21.020
English version
Dependability management
Part 3-1: Application guide –
Analysis techniques for dependability –
Guide on methodology
(IEC 60300-3-1:2003)
Gestion de la sûreté de fonctionnement Zuverlässigkeitsmanagement
Partie 3-1: Guide d'application - Teil 3-1: Anwendungsleitfaden –
Techniques d'analyse de la sûreté Verfahren zur Analyse der Zuverlässigkeit -
de fonctionnement – Leitfaden zur Methodik
Guide méthodologique (IEC 60300-3-1:2003)
(CEI 60300-3-1:2003)
This European Standard was approved by CENELEC on 2004-09-01. 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, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

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

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60300-3-1:2004 E
Foreword
The text of the International Standard IEC 60300-3-1:2003, prepared by IEC TC 56, Dependability,
was submitted to the formal vote and was approved by CENELEC as EN 60300-3-1 on 2004-09-01.
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) 2005-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60300-3-1:2003 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 60300-2 NOTE Harmonized as EN 60300-2:1996 (not modified).
__________
- 3 - «Field32»
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 Where 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 60300-3-2 1993 Dependability management - -
Part 3: Application guide –
Section 2: Collection of dependability
data from the field
IEC 60300-3-4 1996 Part 3: Application guide – - -
Section 4: Guide to the specification of
dependability requirements
IEC 60300-3-5 2001 Part 3-5: Application guide - Reliability - -
test conditions and statistical test
principles
IEC 60300-3-10 2001 Part 3-10: Application guide - - -
Maintainability
IEC 60706-1 1982 Guide on maintainability of equipment - -
Part 1 - Sections 1, 2 and 3: Introduction,
requirements and maintainability
programme
IEC 60706-2 1990 Part 2 - Section 5: Maintainability studies - -
during the design phase
IEC 60812 1985 Analysis techniques for system reliability - HD 485 S1 1987
Procedure for failure mode and effects
analysis (FMEA)
IEC 61078 1991 Analysis techniques for dependability - EN 61078 1993
Reliability block diagram method

IEC 61165 1995 Application of Markov techniques - -

IEC 61709 1996 Electronic components - Reliability - EN 61709 1998
Reference conditions for failure rates and
stress models for conversion
Publication Year Title EN/HD Year
IEC 61882 2001 Hazard and operability studies (HAZOP - -
studies) - Application guide
ISO 9000 2000 Quality management systems - EN ISO 9000 2000
Fundamentals and vocabulary
INTERNATIONAL IEC
STANDARD
60300-3-1
Second edition
2003-01
Dependability management –
Part 3-1:
Application guide –
Analysis techniques for dependability –
Guide on methodology
Gestion de la sûreté de fonctionnement –
Partie 3-1:
Guide d'application –
Techniques d'analyse de la sûreté de fonctionnement –
Guide méthodologique
 IEC 2003  Copyright - all rights reserved
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, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
XA
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60300-3-1  IEC:2003(E)
CONTENTS
FOREWORD . 3
INTRODUCTION .4
1 Scope . 5
2 Normative references. 5
3 Definitions . 6
4 Basic dependability analysis procedure. 7
4.1 General procedure. 7
4.2 Dependability analysis methods. 8
4.3 Dependability allocations .10
4.4 Dependability analysis .11
4.5 Maintenance and repair analysis and considerations .13
5 Selecting the appropriate analysis method.13
Annex A (informative) Brief description of analysis techniques .16
Bibliography.58
Figure 1 – General dependability analysis procedure . 7
Figure A.1 – Temperature dependence of the failure rate.19
Figure A.2 – Fault tree for an audio amplifier.21
Figure A.3 – Sub-tree from FTA in Figure A.2.22
Figure A.4 – Event tree .24
Figure A.5 – Elementary models.26
Figure A.6 – Example of unit .28
Figure A.7 – State-transition diagram .29
Figure A.8 – Block diagram of a multiprocessor system.32
Figure A.9 – Petri net of a multiprocessor system.33
Figure A.10 – The HAZOP study procedure.37
Figure A.11 – Human errors shown as an event tree .41
Figure A.12 – Example – Application of stress–strength criteria .43
Figure A.13 – Truth table for simple systems.44
Figure A.14 – Example.44
Figure A.15 – Cause and effect diagram .56
Table 1 – Use of methods for general dependability analysis tasks . 9
Table 2 – Characteristics of selected dependability analysis methods .15
Table A.1 – Symbols used in the representation of the fault treee .22
Table A.2 – States of the unit .28
Table A.3 – Effects of failures in functional and diagnostic parts .29
Table A.4 – Transition rates .30
Table A.5 – Example of FMEA.35
Table A.6 – Basic guide words and their generic meanings .36
Table A.7 – Additional guide words relating to clock time and order or sequence .36
Table A.8 – Credible human errors.40
Table A.9 – Truth table example.45

60300-3-1  IEC:2003(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DEPENDABILITY MANAGEMENT –
Part 3-1: Application guide –
Analysis techniques for dependability – Guide on methodology
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National 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 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
Organization 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 technical 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 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 regional 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 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 60300-3-1
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