EN 60706-2:2006

SLOVENSKI STANDARD
01-januar-2007
Vzdrževalnost opreme - 2. del: Zahteve za vzdrževalnost in študije vzdrževalnosti v
fazi snovanja in razvoja (IEC 60706-2:2006)
Maintainability of equipment -- Part 2: Maintainability requirements and studies during the
design and development phase
Instandhaltbarkeit von Geräten -- Teil 2: Instandhaltbarkeitsanforderungen und Studien
in der Entwicklungsphase
Maintenabilité de matériel -- Partie 2: Exigences et études de maintenabilité pendant la
phase de conception et de développement
Ta slovenski standard je istoveten z: EN 60706-2:2006
ICS:
03.100.40 Raziskave in razvoj Research and development
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 60706-2
NORME EUROPÉENNE
June 2006
EUROPÄISCHE NORM
ICS 03.120.01; 21.020
English version
Maintainability of equipment
Part 2: Maintainability requirements and studies
during the design and development phase
(IEC 60706-2:2006)
Maintenabilité de matériel  Instandhaltbarkeit von Geräten
Partie 2 : Exigences et études de Teil 2: Instandhaltbarkeitsanforderungen
maintenabilité pendant la phase de und Studien in der Entwicklungsphase
conception et de développement (IEC 60706-2:2006)
(CEI 60706-2:2006)
This European Standard was approved by CENELEC on 2006-05-01. 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.

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 60706-2:2006 E
Foreword
The text of document 56/1090/FDIS, future edition 2 of IEC 60706-2, prepared by IEC TC 56,
Dependability, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60706-2 on 2006-05-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2007-02-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2009-05-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60706-2:2006 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 60300-1 NOTE  Harmonized as EN 60300-1:2003 (not modified).
IEC 60300-2 NOTE  Harmonized as EN 60300-2:2004 (not modified).
IEC 60300-3 NOTE  Harmonized in 60300-3 series (not modified).

__________
- 3 - EN 60706-2:2006
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
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 60300-3-3 - Dependability management EN 60300-3-3 2004
Part 3-3: Application guide - Life cycle costing

IEC 60300-3-10 2001 Dependability management - -
Part 3-10: Application guide - Maintainability

1)
IEC 60300-3-11 - Dependability management - -
Part 3-11: Application guide - Reliability
centred maintenance
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)
IEC 60706-3 - Maintainability of equipment - -
Part 3: Verification and collection, analysis
and presentation of data
1)
IEC 60706-5 - Guide on maintainability of equipment - -
Part 5 - Section 4: Diagnostic testing

1) 2)
IEC 60812 - Analysis techniques for system reliability - EN 60812 2006
Procedure for failure mode and effects
analysis (FMEA)
1) 2)
IEC 61025 - Fault tree analysis (FTA) HD 617 S1 1992

1) 2)
IEC 61160 - Design review EN 61160 2005

1)
Undated reference.
2)
Valid edition at date of issue.

Publication Year Title EN/HD Year
IEC 61649 1997 Goodness-of-fit tests, confidence intervals - -
and lower confidence limits for Weibull
distributed data
NORME CEI
INTERNATIONALE
IEC
60706-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2006-03
Maintenabilité de matériel –
Partie 2:
Exigences et études de maintenabilité
pendant la phase de conception et
de développement
Maintainability of equipment –
Part 2:
Maintainability requirements and studies
during the design and development phase

 IEC 2006 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. 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
CODE PRIX
XA
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60706-2  IEC:2006 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11

1 Scope.13
2 Normative references .13
3 Terms, definitions and acronyms .15
3.1 Terms and definitions .15
3.2 Acronyms .17
4 General approach.17
5 Principle of maintainability.19
6 Maintainability activities in the life cycle .19
6.1 General .19
6.2 Concept and definition phase .21
6.3 Design and development phase.21
6.4 Manufacture and installation phase .23
6.5 Operation and maintenance phases .23
6.6 Disposal phase.23
7 Specification of maintainability requirements .25
7.1 Statement of maintainability requirements .25
7.2 Maintainability characteristics.27
7.3 Constraints.31
7.4 Maintainability programme requirements .33
7.5 Verification .33
8 Maintainability studies in the design and development phase .35
8.1 General .35
8.2 Objectives .35
8.3 Maintainability studies in the design process .35
8.4 Analysis tools and procedures.45
9 Design support .59
9.1 Liaison .59
9.2 Design criteria and check-lists.61
9.3 Design reviews.63

Annex A (informative) Maintainability allocation .67
Annex B (informative) Example of a maintainability allocation .81
Annex C (informative) Example of allocation of reliability values and maintenance
strategy selection for a system with non-constant failure rate .87

Bibliography.101

60706-2  IEC:2006 – 5 –
Figure 1 – Maintainability studies in the design process.41
Figure 2 – Hardware level maintainability block diagram .49
Figure 3 – Basic steps in maintainability prediction .53
ACMT ACMT
 
50 95
Figure A.1 – = f .77
 
MACMT MACMT
 
Figure A.2 – Maintainability allocation to sub-item level .79
Figure B.1 – Functional level diagram .83
Figure C.1 – Weibull plot of the components in the system .99

Table 1 – Examples of quantitative maintainability characteristics.27
Table 2 – Detailed tasks in maintainability studies .43
Table A.1 – M allocation to sub-item level.75
Table B.1 – Allocation table .85
Table C.1 – Comparison of costs .97

60706-2  IEC:2006 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAINTAINABILITY OF EQUIPMENT –

Part 2: Maintainability requirements and studies
during the design and development phase

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
...