EN 60300-3-4:2008

SLOVENSKI STANDARD
01-marec-2008
Upravljanje zagotovljivosti - 3-4. del: Vodilo za uporabo - Vodilo za specifikacijo
zahtev za zagotovljivost (IEC 60300-3-4:2007)
Dependability management -- Part 3-4: Application guide - Guide to the specification of
dependability requirements
Zuverlässigkeitsmanagement -- Teil 3-4: Anwendungsleitfaden - Anleitung zum
Festlegen von Zuverlässigkeitsforderungen
Gestion de la sûreté de fonctionnement -- Partie 3-4: Guide d'application - Spécification
d'exigences de sûreté de fonctionnement
Ta slovenski standard je istoveten z: EN 60300-3-4:2008
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 60300-3-4
NORME EUROPÉENNE
January 2008
EUROPÄISCHE NORM
ICS 03.100.40; 03.120.01
English version
Dependability management -
Part 3-4: Application guide -
Guide to the specification of dependability requirements
(IEC 60300-3-4:2007)
Gestion de la sûreté de fonctionnement -  Zuverlässigkeitsmanagement -
Partie 3-4: Guide d'application - Teil 3-4: Anwendungsleitfaden -
Spécification d'exigences de sûreté Anleitung zum Festlegen von
de fonctionnement Zuverlässigkeitsforderungen
(CEI 60300-3-4:2007) (IEC 60300-3-4:2007)

This European Standard was approved by CENELEC on 2007-12-01. 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, Bulgaria, 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.

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

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60300-3-4:2008 E
Foreword
The text of document 56/1212/FDIS, future edition 2 of IEC 60300-3-4, prepared by IEC TC 56,
Dependability, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60300-3-4 on 2007-12-01.
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) 2008-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-12-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60300-3-4:2007 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60812 NOTE Harmonized as EN 60812:2006 (not modified).
IEC 61165 NOTE Harmonized as EN 61165:2006 (not modified).
IEC 61508-1 NOTE Harmonized as EN 61508-1:2001 (not modified).
Harmonized as EN 61508-2:2001 (not modified).
IEC 61508-2 NOTE
Harmonized as EN 61508-3:2001 (not modified).
IEC 61508-3 NOTE
IEC 61508-4 NOTE Harmonized as EN 61508-4:2001 (not modified).
IEC 61508-5 NOTE Harmonized as EN 61508-5:2001 (not modified).
IEC 61508-6 NOTE Harmonized as EN 61508-6:2001 (not modified).
IEC 61508-7 NOTE Harmonized as EN 61508-7:2001 (not modified).
Harmonized as EN 61709:1998 (not modified).
IEC 61709 NOTE
__________
– 3 – EN 60300-3-4:2008
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
1)
IEC 60050-191 – International Electrotechnical Vocabulary – –
(IEV) -
Chapter 191: Dependability and quality of
service
1) 2)
IEC 60300-1 – Dependability management - EN 60300-1 2003
Part 1: Dependability management systems

1) 2)
IEC 60300-2 – Dependability management - EN 60300-2 2004
Part 2: Guidelines for dependability
management
1) 2)
IEC 60300-3-1 – Dependability management - EN 60300-3-1 2004
Part 3-1: Application guide - Analysis
techniques for dependability - Guide on
methodology
1) 2)
IEC 60300-3-2 – Dependability management - EN 60300-3-2 2005
Part 3-2: Application guide - Collection of
dependability data from the field

1) 2)
IEC 60300-3-3 – Dependability management - EN 60300-3-3 2004
Part 3-3: Application guide - Life cycle costing

1)
IEC 60300-3-5 – Dependability management - – –
Part 3-5: Application guide - Reliability test
conditions and statistical test principles

1)
IEC 60300-3-10 – Dependability management - – –
Part 3-10: Application guide - Maintainability

1) 2)
IEC 60300-3-12 – Dependability management - EN 60300-3-12 2004
Part 3-12: Application guide - Integrated
logistic support
1) 2)
IEC 60300-3-14 – Dependability management - EN 60300-3-14 2004
Part 3-14: Application guide - Maintenance
and maintenance support
1)
Undated reference.
2)
Valid edition at date of issue.

Publication Year Title EN/HD Year
1)
IEC 60605-4 – Equipment reliability testing - – –
Part 4: Statistical procedures for exponential
distribution - Point estimates, confidence
intervals, prediction intervals and tolerance
intervals
1)
IEC 60605-6 – Equipment reliability testing - – –
Part 6: Tests for the validity and estimation of
the constant failure rate and constant failure
intensity
1) 2)
IEC 60706-2 – Maintainability of equipment - EN 60706-2 2006
Part 2: Maintainability requirements and
studies during the design and development
phase
1) 2)
IEC 60706-3 – Maintainability of equipment - EN 60706-3 2006
Part 3: Verification and collection, analysis
and presentation of data
1) 2)
IEC 60706-5 – Maintainability of equipment - EN 60706-5 2007
Part 5: Testability and diagnostic testing

1) 2)
IEC 61014 – Programmes for reliability growth EN 61014 2003

1) 2)
IEC 61025 – Fault Tree Analysis (FTA) EN 61025 2007

1)
IEC 61070 – Compliance test procedures for steady-state – –
availability
1) 2)
IEC 61078 – Analysis techniques for dependability - EN 61078 2006
Reliability block diagram and Boolean
methods
1)
IEC 61123 – Reliability testing - Compliance test plans for – –
success ratio
1) 2)
IEC 61124 – Reliability testing - Compliance tests for EN 61124 2006
constant failure rate and constant failure
intensity
1) 2)
IEC 61160 – Design review EN 61160 2005

1) 2)
IEC 61164 – Reliability growth - Statistical test and EN 61164 2004
estimation methods
IEC 61508 Series Functional safety of EN 61508 Series
electrical/electronic/programmable electronic
safety-related systems
1)
IEC 61649 – Goodness-of-fit tests, confidence intervals – –
and lower confidence limits for Weibull
distributed data
1) 2)
IEC 61703 – Mathematical expressions for reliability, EN 61703 2002
availability, maintainability and maintenance
support terms
1)
IEC 61710 – Power law model - Goodness-of-fit tests and – –
estimation methods
1)
IEC 61713 – Software dependability through the software – –
life-cycle processes - Application guide

– 5 – EN 60300-3-4:2008
Publication Year Title EN/HD Year
1)
IEC 62198 – Project risk management - Application – –
guidelines
1) 2)
IEC 62308 – Equipment reliability - Reliability assessment EN 62308 2006
methods
1) 2)
IEC 62347 – Guidance on system dependability EN 62347 2007
specifications
IEC 60300-3-4
Edition 2.0 2007-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dependability management –
Part 3-4: Application guide – Guide to the specification of dependability
requirements
Gestion de la sûreté de fonctionnement –
Partie 3-4: Guide d'application – Spécification d'exigences de sûreté de
fonctionnement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
W
CODE PRIX
ICS 03.100.40; 03.120.01 ISBN 2-8318-9308-9

– 2 – 60300-3-4 © IEC:2007
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references .7
3 Terms and definitions .9
4 General considerations for dependability specifications .9
4.1 The need for dependability .9
4.2 Requirements and goals.11
4.3 Systems .11
4.4 Demonstration of achievement of requirements .13
4.4.1 Concept.13
4.4.2 Activities.14
4.5 Contracting for dependability.15
4.6 Types of specification.16
4.7 Derivation of dependability specifications .17
5 Dependability management .18
6 Availability.19
6.1 General .19
6.1.1 Choice of dependability characteristic.19
6.1.2 Relationship between availability, reliability and maintainability .19
6.2 Availability specifications.20
6.2.1 Quantitative requirements.20
6.2.2 Qualitative requirements.20
6.3 Provision of availability verification and validation .20
6.3.1 General .20
6.3.2 Verification and validation by testing.21
6.3.3 Verification and validation by analysis .21
7 Reliability .21
7.1 General .21
7.2 Reliability specification.22
7.2.1 Quantitative requirements.22
7.2.2 Qualitative requirements.23
7.3 Reliability verification and validation.24
7.3.1 General .24
7.3.2 Verification and validation by testing.24
7.3.3 Verification and validation by analysis .25
8 Maintainability .25
8.1 General .25
8.2 Maintainability specification.
...