Maintainability of equipment -- Part 3: Verification and collection, analysis and presentation of data

This part of IEC 60706 describes the various aspects of verification necessary to ensure that the specified maintainability requirements of an item have been met and provides suitable procedures and test methods. While maintainability verification as such should be a mandatory part of any maintainability programme (see IEC 60300-3-10), each individual case requires appropriate methods to be carefully selected in order to ensure overall costeffectiveness. This standard also addresses the collection, analysis and presentation of maintainability related data, which may be required during, and at the completion of, design and during item production and operation.

Instandhaltbarkeit von Geräten -- Teil 3: Verifizierung und Erfassung, Analyse und Darstellung von Daten

Maintenabilité de matériel -- Partie 3: Vérification et recueil, analyse et présentation de données

La présente partie de la CEI 60706 décrit les différents aspects de la vérification nécessaire permettant d'assurer que les exigences de maintenabilité spécifiées pour une entité ont été respectées et elle fournit les procédures et méthodes d'essai adaptées. Cette norme traite aussi du recueil, de l'analyse et de la présentation des données de maintenabilité qui peuvent être requises pendant et en fin de la conception, de la production et de l'utilisation de l'entité.",PE

Vzdrževalnost opreme - 3. del: Overjanje, zbiranje, analiza in predstavitev podatkov (IEC 60706-3:2006)

General Information

Status
Published
Publication Date
31-Dec-2006
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jan-2007
Due Date
01-Jan-2007
Completion Date
01-Jan-2007

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SLOVENSKI STANDARD
SIST EN 60706-3:2007
01-januar-2007
Vzdrževalnost opreme - 3. del: Overjanje, zbiranje, analiza in predstavitev
podatkov (IEC 60706-3:2006)

Maintainability of equipment -- Part 3: Verification and collection, analysis and

presentation of data

Instandhaltbarkeit von Geräten -- Teil 3: Verifizierung und Erfassung, Analyse und

Darstellung von Daten

Maintenabilité de matériel -- Partie 3: Vérification et recueil, analyse et présentation de

données
Ta slovenski standard je istoveten z: EN 60706-3:2006
ICS:
03.100.40 Raziskave in razvoj Research and development
21.020 =QDþLOQRVWLLQQDþUWRYDQMH Characteristics and design of
VWURMHYDSDUDWRYRSUHPH machines, apparatus,
equipment
SIST EN 60706-3:2007 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 60706-3:2007
---------------------- Page: 2 ----------------------
SIST EN 60706-3:2007
EUROPEAN STANDARD
EN 60706-3
NORME EUROPÉENNE
July 2006
EUROPÄISCHE NORM
ICS 03.120.01; 21.020
English version
Maintainability of equipment
Part 3: Verification and collection, analysis and
presentation of data
(IEC 60706-3:2006)
Maintenabilité de matériel Instandhaltbarkeit von Geräten
Partie 3: Vérification et recueil, Teil 3: Verifizierung und Erfassung,
analyse et présentation de données Analyse und Darstellung von Daten
(CEI 60706-3:2006) (IEC 60706-3:2006)

This European Standard was approved by CENELEC on 2006-07-01. 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 60706-3:2006 E
---------------------- Page: 3 ----------------------
SIST EN 60706-3:2007
EN 60706-3:2006 - 2 -
Foreword

The text of document 56/1094/FDIS, future edition 2 of IEC 60706-3, prepared by IEC TC 56,

Dependability, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as

EN 60706-3 on 2006-07-01.
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) 2007-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-07-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 60706-3:2006 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 as EN 60300-3 (series) (not modified).
__________
---------------------- Page: 4 ----------------------
SIST EN 60706-3:2007
- 3 - EN 60706-3:2006
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
IEC 60300-3-5 - Dependability management - -
Part 3-5: Application guide - Reliability test
conditions and statistical test principles
IEC 60300-3-10 2001 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) 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 61160 - Design review EN 61160 2005
IEC 61649 - Goodness-of-fit tests, confidence intervals - -
and lower confidence limits for Weibull
distributed data
IEC 61710 - Power law model - Goodness-of-fit tests and - -
estimation methods
Undated reference.
Valid edition at date of issue.
---------------------- Page: 5 ----------------------
SIST EN 60706-3:2007
---------------------- Page: 6 ----------------------
SIST EN 60706-3:2007
NORME CEI
INTERNATIONALE
IEC
60706-3
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2006-04
Maintenabilité de matériel –
Partie 3:
Vérification et recueil, analyse
et présentation de données
Maintainability of equipment –
Part 3:
Verification and collection, analysis
and presentation of data
 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
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
---------------------- Page: 7 ----------------------
SIST EN 60706-3:2007
60706-3  IEC:2006 – 3 –
CONTENTS

FOREWORD...........................................................................................................................7

INTRODUCTION...................................................................................................................11

1 Scope.............................................................................................................................13

2 Normative references .....................................................................................................13

3 Terms and definitions .....................................................................................................15

4 Introduction to maintainability verification .......................................................................15

4.1 Objective of verification .........................................................................................15

4.2 Maintenance support concepts influencing maintainability verification ...................17

4.3 Methods of verification ..........................................................................................17

4.4 Verification process...............................................................................................17

4.5 Conditions and constraints ....................................................................................19

4.6 Qualitative and quantitative verification procedures...............................................21

5 Procedures for verification of qualitative maintainability..................................................23

5.1 Design review........................................................................................................23

5.2 Review of test experience .....................................................................................23

5.3 Ease-of-maintenance studies ................................................................................25

5.4 Review of maintenance task analysis ....................................................................25

5.5 Review of operational experience..........................................................................25

6 Procedures for verification of quantitative maintainability................................................27

6.1 Maintainability predictions .....................................................................................27

6.2 Verification based on demonstration tests .............................................................27

6.3 Verification based on field data .............................................................................27

7 Demonstration procedures..............................................................................................29

7.1 General .................................................................................................................29

7.2 Demonstration process..........................................................................................29

7.3 Demonstration planning.........................................................................................29

7.4 Conditions and constraints ....................................................................................31

7.5 Demonstration after modification ...........................................................................31

8 Elements of the verification procedure............................................................................33

8.1 Utilization of data sources .....................................................................................33

8.2 Data acquisition and analysis ................................................................................33

8.3 Evaluation .............................................................................................................35

8.4 Comparison...........................................................................................................37

9 Collection, analysis and presentation of maintainability data...........................................37

9.1 General .................................................................................................................37

9.2 Maintenance concept ............................................................................................37

9.3 Data sources .........................................................................................................39

9.4 Item demonstration and field data..........................................................................41

9.5 Analysis procedures ..............................................................................................41

9.6 Data presentation..................................................................................................43

Annex A (normative) Maintainability demonstration procedures.............................................49

Annex B (normative) Maintainability demonstration test methods ..........................................55

Annex C (normative) Analysis of maintainability related data ................................................71

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SIST EN 60706-3:2007
60706-3  IEC:2006 – 5 –

Bibliography..........................................................................................................................75

Figure B.1 – Test method 8: Sequential test plan .................................................................34

Table 1 – Qualitative and quantitative maintainability verification procedures........................23

Table 2 – Active repair task data summary form....................................................................47

Table 3 – Active repair time summary form ...........................................................................47

Table 4 – Preventive maintenance summary .........................................................................47

Table A.1 – Test methods .....................................................................................................49

Table B.1 – Test method 7: Acceptance and rejection numbers ............................................67

Table B.2 – Sampling plans for specified p , p , α, β (p < 0,2) ...........................................69

0 1 0

Table C.1 – Critical values of d .............................................................................................73

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SIST EN 60706-3:2007
60706-3  IEC:2006 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAINTAINABILITY OF EQUIPMENT –
Part 3: Verification and collection, analysis
and presentation of data
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 Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). 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. 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 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 IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60706-3 has been prepared by IEC technical committee 56:

Dependability.

This second edition cancels and replaces the first edition, published in 1983, and constitutes

a technical revision.

The major technical changes with regard to the first edition concern combining the original

Sections 6 and 7 from the first edition and adding the two statistical annexes from IEC 60706-6,

which have been included as Annexes B and C.
---------------------- Page: 10 ----------------------
SIST EN 60706-3:2007
60706-3  IEC:2006 – 9 –
The text of this standard is based on the following documents:
FDIS Report on voting
56/1094/FDIS 56/1109/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

IEC 60706 consists of the following parts , under the general title Maintainability of

equipment:

NOTE Each part outlines the application of specific techniques to implement a maintainability programme.

Part 1: Introduction, requirements and maintenance programme
Part 2: Maintainability studies during the design phase
Part 3: Verification and collection, analysis and presentation of data
Part 4: Guide to maintenance and maintenance support planning
Part 5: Diagnostic testing
Part 6: Statistical methods in maintainability evaluation

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
___________

1 Parts 1, 4 and 6 are currently being absorbed into other parts of IEC 60706. The Foreword of the relevant part

will give an explanatory text.
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SIST EN 60706-3:2007
60706-3  IEC:2006 – 11 –
INTRODUCTION

The design of an item includes the need for efficient maintenance techniques to ensure that

the item continues to operate properly. Before it is put into service it is necessary to verify

that the proposed maintenance procedures can be executed as designed and the collection

and analysis of data is an essential part of the verification process.

The data used for verification may come from a variety of sources and what is used in

particular circumstances will depend on many factors, including what historical data are

available and the status of the design. For verification that maintainability targets have been

met, it is preferable to conduct tests that generate data on the product under review.

Historical data have to be sorted for relevance to the project and when useful data have been

selected, they are analysed to provide the information required.

There are a number of verification procedures that are explained in this standard with the

associated analysis techniques. They are designed to check the adequacy of the maintenance

procedures, the tools and equipment supplied for maintenance, the adequacy of the technical

publications and the ease of maintenance of the item. This enables improvements to be made

to the maintenance procedures and, if necessary, modifications to be carried out on the item

to improve maintainability. It is important to include any required changes to the design of the

item as early as possible, if possible before the start of production, in order to minimize costs.

This initial analysis is, in most cases, a statistical analysis based on a small sample of data. It

is therefore preferable that the collection and analysis of data should go on after the item

enters service so that the results achieved by the verification process are refined and

improved. These data are important to determine the adequacy of the maintenance support,

as this is not so easy to assess in an initial verification analysis.

IEC 60706-3 forms part of a hierarchy of standards dealing with dependability, as described

below.

IEC 60300-1 and IEC 60300-2 are the IEC top-level standards that provide guidance on how

to incorporate dependability, incorporating reliability, availability and maintainability, into

manufactured products. The top-level standard on maintainability is the application guide for

maintainability, IEC 60300-3-10, which forms part of the IEC 60300-3 series of standards. It

can be used to implement a maintainability programme covering the initiation, development

and in-service phases of a product, which form part of the tasks described in IEC 60300-2. It

also provides guidance on how the maintenance aspects of the tasks should be considered in

order to achieve optimum maintainability.
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SIST EN 60706-3:2007
60706-3  IEC:2006 – 13 –
MAINTAINABILITY OF EQUIPMENT –
Part 3: Verification and collection, analysis
and presentation of data
1 Scope

This part of IEC 60706 describes the various aspects of verification necessary to ensure that

the specified maintainability requirements of an item have been met and provides suitable

procedures and test methods. While maintainability verification as such should be a

mandatory part of any maintainability programme (see IEC 60300-3-10), each individual case

requires appropriate methods to be carefully selected in order to ensure overall cost-

effectiveness.

This standard also addresses the collection, analysis and presentation of maintainability

related data, which may be required during, and at the completion of, design and during item

production and operation.
2 Normative references

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.

IEC 60050(191):1990, International Electrotechnical Vocabulary (IEV) – Chapter 191:

Dependability and quality of service

IEC 60300-3-5, Dependability management – Part 3-5: Application guide – Reliability test

conditions and statistical test principles
IEC 60300-3-10:2001, Dependability management – Part 3-10: Application guide –
Maintainability

IEC 60300-3-12, Dependability management – Part 3-12: Application guide – Integrated

logistic support

IEC 60300-3-14, Dependability management – Part 3-14: Application guide – Maintenance

and maintenance support

IEC 60706-2, Maintainability of equipment – Part 2 – Section Five: Maintainability studies

during the design phase
IEC 61160, Design review

IEC 61649, Goodness-of-fit tests, confidence intervals and lower confidence limits for Weibull

distributed data
IEC 61710, Power law model – Goodness-of-fit tests and estimation methods
___________
2 To be published.
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SIST EN 60706-3:2007
60706-3  IEC:2006 – 15 –
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60050(191),

together with the following definitions, apply.
3.1
customer selected equipment

portion of the item under consideration which has been specially selected by the customer

NOTE Generally the supplier has no control over the maintainability of this portion, but it should be considered in

the design of the item. Cooperation between customer and supplier is clearly desirable.

3.2
maintainability demonstration

activity performed on individual items or samples to indicate achievement of a specific

maintainability requirement and/or to generate maintainability data
3.3
maintainability verification

monitoring actions, inspections or both for the purpose of determining compliance by the

contractor with the maintainability requirements specified for an item
3.4
maintenance concept

interrelationship between the maintenance echelons, the indenture levels and the levels of

maintenance to be applied for the maintenance of an item
3.5
maintenance policy

general approach to the provision of maintenance and maintenance support based on the

objectives and policies of owners, users and customers
3.6
software support centre
centralized software maintenance service
4 Introduction to maintainability verification
4.1 Objective of verification

The objective is to verify that both qualitative and quantitative maintainability requirements

have been met within the specified performance limitations. This includes verification that the

defined maintenance activity has restored the item to the specified performance level. The

verification is applicable to hardware, software and maintenance facilities.

Maintainability verification is a process of assessing the results of maintainability experience.

This assessment can begin as soon as data and results are available and may continue

throughout the project and extend into field use.
This is further expanded with respect to
– qualitative maintainability requirements, see Clause 5,
– quantitative maintainability requirements, see Clause 6.
Demonstration procedures are described in Clause 7.
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SIST EN 60706-3:2007
60706-3  IEC:2006 – 17 –
4.2 Maintenance support concepts influencing maintainability verification

When performing maintainability verification, it should be borne in mind that the following

maintenance support elements have a decisive influence on the effectiveness of the

maintenance process:
– maintenance facilities;
– support equipment;
– material support;
– maintenance personnel and training;
– technical documentation and manuals;
– transportation, handling and storage conditions.
IEC 60300-3-14 contains further details on maintenance support.
4.3 Methods of verification

Maintainability verification is a continuous process of generating, collecting, analysing and

evaluating maintainability related data as they become available in the course of project

development, and comparing results with specified maintainability requirements.

Methods of maintainability verification differ according to the programme phase, as follows:

a) analysis and review. This includes analysis of historical data, comparisons with the results

of design reviews and maintainability predictions. This may include analysis of field data

later in the life cycle;

b) special studies. Conducted during the concept and definition or design and development

phases to investigate general or detailed problems. Examples include ease-of-
maintenance studies, maintenance task analysis and simulation studies;

c) demonstration tests. Performed at the end of the design and development phase on

prototype or early production items, if the analytical means or special studies do not give

sufficient evidence as to whether maintainability conforms to specified requirements.

d) review of operational experience. Verification may be left to operational experience and

review of field data, correlated, if appropriate, with the review and analysis of historical

data;

e) spatial imaging simulation. Three-dimensional computer simulations of maintenance

actions may be performed at appropriate times throughout the design process to verify

that the proposed sequence of actions, access and other workspace considerations
support the achievement of the required level of maintainability.
4.4 Verification process
The procedural elements of the verification process are as follows:
a) identification and activation of possible sources of data

in the early project phases, only historical data of comparable previous items can be used.

Later, design, manufacturing, test and finally field data become available. Maintainability

demonstrations in this context provide a special data source for the generation of

maintainability data under simulated conditions;
---------------------- Page: 15 ----------------------
SIST EN 60706-3:2007
60706-3  IEC:2006 – 19 –
b) acquisition and analysis of data
data collection, review and screening to ensure their applicability;
c) evaluation

processing of data using mathematical models or checklists to obtain quantitative

characteristics or qualitative properties of maintainability;
d) comparison with requirements

the results of the evaluation are compared with specified maintainability characteristics

and properties to check whethe
...

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