SIST EN 61069-5:2017

Industrial-process measurement, control and automation - Evaluation of system properties for the purpose of system assessment - Part 5: Assessment of system dependability (IEC 61069-5:2016)

Describes in detail the method to systematically assess the dependability of industrial-process measurement and control systems. Uses the assessment methodology given in EN 61069-2.

Leittechnik für industrielle Prozesse - Ermittlung der Systemeigenschaften zum Zweck der Eignungsbeurteilung eines Systems - Teil 5: Eignungsbeurteilung der Systemzuverlässigkeit (IEC 61069-5:2016)

Mesure, commande et automation dans les processus industriels - Appréciation des propriétés d'un sytème en vue de son évaluation - Partie 5: Evaluation de la sûreté de fonctionnement d'un système (IEC 61069-5:2016)

L'IEC 61069-2016:2016 spécifie la méthode d'évaluation détaillée de la sûreté de fonctionnement d'un système de commande de base (BCS) reposant sur les principes de base de l'IEC 61069-1 et la méthodologie de l'IEC 61069-2; définit la classification de base des propriétés de la sûreté de fonctionnement; décrit les facteurs ayant une influence sur la sûreté de fonctionnement et dont il faut tenir compte lors de l'appréciation de la fonctionnalité, et donne des lignes directrices concernant les techniques de sélection à partir d'un ensemble d'options (avec références) pour l'appréciation de la sûreté de fonctionnement. Cette deuxième édition annule et remplace la première édition parue en 1994. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- réorganisation des informations contenues dans l'IEC 61069-5:1994 visant à mieux organiser l'ensemble complet de normes et à le rendre plus cohérent;
- l'IEC TS 62603-1 a été incorporée dans cette édition.

Meritve, krmiljenje in avtomatizacija v industrijskih procesih - Ocenjevanje lastnosti sistema zaradi njegovega vrednotenja - 5. del: Vrednotenje zagotovljivosti sistema (IEC 61069-5:2016)

Podrobno opisuje metodo za sistematično vrednotenje zagotovljivosti meritev in krmiljenja v industrijskih procesih. Uporablja metodologijo vrednotenja, podano v standardu EN 61069-2.

General Information

• Status: Published
• Publication Date: 19-Feb-2017
• ICS: 25.040.40 - Industrial process measurement and control
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 05-Oct-2016
• Due Date: 10-Dec-2016
• Completion Date: 20-Feb-2017
• Ref Project: EN 61069-5:2016 - Industrial-process measurement, control and automation - Evaluation of system properties for the purpose of system assessment - Part 5: Assessment of system dependability

Relations

• Replaces: SIST EN 61069-5:1998 - Industrial-process measurement and control - Evaluation of system properties for the purpose of system assessment -- Part 5: Assessment of system dependability
• Effective Date: 04-Oct-2016

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61069-5:2017
01-marec-2017
1DGRPHãþD
SIST EN 61069-5:1998
Meritve, krmiljenje in avtomatizacija v industrijskih procesih - Ocenjevanje
lastnosti sistema zaradi njegovega vrednotenja - 5. del: Vrednotenje
zagotovljivosti sistema (IEC 61069-5:2016)
Industrial-process measurement, control and automation - Evaluation of system
properties for the purpose of system assessment - Part 5: Assessment of system
dependability (IEC 61069-5:2016)
Leittechnik für industrielle Prozesse - Ermittlung der Systemeigenschaften zum Zweck
der Eignungsbeurteilung eines Systems - Teil 5: Eignungsbeurteilung der
Systemzuverlässigkeit (IEC 61069-5:2016)
Mesure, commande et automation dans les processus industriels - Appréciation des
propriétés d'un sytème en vue de son évaluation - Partie 5: Evaluation de la sûreté de
fonctionnement d'un système (IEC 61069-5:2016)
Ta slovenski standard je istoveten z: EN 61069-5:2016
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
SIST EN 61069-5:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61069-5:2017

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SIST EN 61069-5:2017


EUROPEAN STANDARD EN 61069-5

NORME EUROPÉENNE

EUROPÄISCHE NORM
September 2016
ICS 25.040.40 Supersedes EN 61069-5:1995
English Version
Industrial-process measurement, control and automation -
Evaluation of system properties for the purpose of system
assessment - Part 5: Assessment of system dependability
(IEC 61069-5:2016)
Mesure, commande et automation dans les processus Leittechnik für industrielle Prozesse - Ermittlung der
industriels - Appréciation des propriétés d'un sytème en vue Systemeigenschaften zum Zweck der Eignungsbeurteilung
de son évaluation - Partie 5: Evaluation de la sûreté de eines Systems - Teil 5: Eignungsbeurteilung der
fonctionnement d'un système Systemzuverlässigkeit
(IEC 61069-5:2016) (IEC 61069-5:2016)
This European Standard was approved by CENELEC on 2016-07-20. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 61069-5:2016 E

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SIST EN 61069-5:2017
EN 61069-5:2016
European foreword
The text of document 65A/793/FDIS, future edition 2 of IEC 61069-5, prepared by SC 65A "System
aspects", of IEC/TC 65 "Industrial-process measurement, control and automation" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN 61069-5:2016.
The following dates are fixed:
(dop) 2017-04-20
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2019-07-20
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 61069-5:1995.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61069-5:2016 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 60300-3-1:2003 NOTE Harmonized as EN 60300-3-1:2004 (not modified).
IEC 60068 NOTE Harmonized in EN 60068 series.
IEC 60812:2006 NOTE Harmonized as EN 60812:2006 (not modified).
IEC 61000 NOTE Harmonized in EN 61000 series.
IEC 61025:2006 NOTE Harmonized as EN 61025:2007 (not modified).
IEC 61069-6 NOTE Harmonized as EN 61069-6.
IEC 61078 NOTE Harmonized as EN 61078.
IEC 61165 NOTE Harmonized as EN 61165.
IEC 61326 NOTE Harmonized in EN 61326 series.
IEC 61508 NOTE Harmonized in EN 61508 series.
2

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SIST EN 61069-5:2017
EN 61069-5:2016
1)
IEC 62443 NOTE Harmonized in EN 62443 series .
IEC/TS 62603-1 NOTE Harmonized as CLC/TS 62603-1.

1) At draft stage.
3

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SIST EN 61069-5:2017
EN 61069-5:2016
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.

Publication Year Title EN/HD Year
IEC 60300-3-2 -  Dependability management - EN 60300-3-2 -
Part 3-2: Application guide - Collection of
dependability data from the field
IEC 60319 -  Presentation and specification of reliability - -
data for electronic components
2)
IEC 61069-1 2016 Industrial-process measurement, control EN 61069-1 201X
and automation - Evaluation of system
properties for the purpose of system
assessment -
Part 1: Terminology and basic concepts
2)
EN 61069-2 201X
IEC 61069-2 2016 Industrial-process measurement, control
and automation - Evaluation of system
properties for the purpose of system
assessment -
Part 2: Assessment methodology
IEC 61070 -  Compliance test procedures for steady- - -
state availability
IEC 61709 2011 Electric components - Reliability - EN 61709 2011
Reference conditions for failure rates and
stress models for conversion
ISO/IEC 25010 -  Systems and software engineering - - -
Systems and software Quality
Requirements and Evaluation (SQuaRE) -
System and software quality models
ISO/IEC 27001 2013 Information technology - Security - -
techniques - Information security
management systems - Requirements
ISO/IEC 27002 -  Information technology - Security - -
techniques - Code of practice for
information security controls


2) To be published.
4

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SIST EN 61069-5:2017




IEC 61069-5

®


Edition 2.0 2016-06




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Industrial-process measurement, control and automation – Evaluation of system

properties for the purpose of system assessment –

Part 5: Assessment of system dependability




Mesure, commande et automation dans les processus industriels – Appréciation

des propriétés d'un système en vue de son évaluation –


Partie 5: Évaluation de la sûreté de fonctionnement d’un système













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 25.040.40 ISBN 978-2-8322-3447-1



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 61069-5:2017
– 2 – IEC 61069-5:2016  IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references. 8
3 Terms, definitions, abbreviated terms, acronyms, conventions and symbols . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms, acronyms, conventions and symbols . 9
4 Basis of assessment specific to dependability . 9
4.1 Dependability properties . 9
4.1.1 General . 9
4.1.2 Availability . 10
4.1.3 Reliability . 10
4.1.4 Maintainability . 10
4.1.5 Credibility . 11
4.1.6 Security . 11
4.1.7 Integrity . 12
4.2 Factors influencing dependability . 12
5 Assessment method . 12
5.1 General . 12
5.2 Defining the objective of the assessment . 12
5.3 Design and layout of the assessment . 13
5.4 Planning of the assessment program . 13
5.5 Execution of the assessment . 13
5.6 Reporting of the assessment . 13
6 Evaluation techniques . 13
6.1 General . 13
6.2 Analytical evaluation techniques . 14
6.2.1 Overview . 14
6.2.2 Inductive analysis . 15
6.2.3 Deductive analysis . 15
6.2.4 Predictive evaluation . 15
6.3 Empirical evaluation techniques. 16
6.3.1 Overview . 16
6.3.2 Tests by fault-injection techniques . 16
6.3.3 Tests by environmental perturbations . 17
6.4 Additional topics for evaluation techniques . 17
Annex A (informative) Checklist and/or example of SRD for system dependability . 18
Annex B (informative) Checklist and/or example of SSD for system dependability . 19
B.1 SSD information . 19
B.2 Check points for system dependability . 19
Annex C (informative) An example of a list of assessment items (information from
IEC TS 62603-1) . 20
C.1 Overview. 20
C.2 Dependability . 20
C.3 Availability . 20

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SIST EN 61069-5:2017
IEC 61069-5:2016  IEC 2016 – 3 –
C.3.1 System self-diagnostics . 20
C.3.2 Single component fault tolerance and redundancy . 20
C.3.3 Redundancy methods . 21
C.4 Reliability . 22
C.5 Maintainability . 23
C.5.1 General . 23
C.5.2 Generation of maintenance requests . 23
C.5.3 Strategies for maintenance . 23
C.5.4 System software maintenance . 23
C.6 Credibility . 23
C.7 Security . 24
C.8 Integrity . 24
C.8.1 General . 24
C.8.2 Hot-swap . 24
C.8.3 Module diagnostic . 24
C.8.4 Input validation . 24
C.8.5 Read-back function . 24
C.8.6 Forced output . 24
C.8.7 Monitoring functions . 24
C.8.8 Controllers . 24
C.8.9 Networks . 25
C.8.10 Workstations and servers . 25
Annex D (informative) Credibility tests . 26
D.1 Overview. 26
D.2 Injected faults . 27
D.2.1 General . 27
D.2.2 System failures due to a faulty module, element or component . 27
D.2.3 System failures due to human errors . 27
D.2.4 System failures resulting from incorrect or unauthorized inputs into the
system through the man-machine interface . 27
D.3 Observations . 28
D.4 Interpretation of the results . 28
Annex E (informative) Available failure rate databases . 29
E.1 Databases . 29
E.2 Helpful standards concerning component failure . 30
Annex F (informative) Security considerations . 31
F.1 Physical security . 31
F.2 Cyber-security . 31
F.2.1 General . 31
F.2.2 Security policy . 31
F.2.3 Other considerations . 31
Bibliography . 33

Figure 1 – General layout of IEC 61069 . 7
Figure 2 – Dependability . 9

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SIST EN 61069-5:2017
– 4 – IEC 61069-5:2016  IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL-PROCESS MEASUREMENT, CONTROL AND AUTOMATION –
EVALUATION OF SYSTEM PROPERTIES FOR
THE PURPOSE OF SYSTEM ASSESSMENT –

Part 5: Assessment of system dependability

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
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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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
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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 61069-5 has been prepared by subcommittee 65A: System
aspects, of IEC technical committee 65: Industrial-process measurement, control and
automation.
This second edition cancels and replaces the first edition published in 1994. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) reorganization of the material of IEC 61069-5:1994 to make the overall set of standards
more organized and consistent;
b) IEC TS 62603-1 has been incorporated into this edition.

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SIST EN 61069-5:2017
IEC 61069-5:2016  IEC 2016 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
65A/793/FDIS 65A/803/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.
A list of all parts in the IEC 61069 series, published under the general title Industrial-process
measurement, control and automation – Evaluation of system properties for the purpose of
system assessment, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability 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.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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SIST EN 61069-5:2017
– 6 – IEC 61069-5:2016  IEC 2016
INTRODUCTION
IEC 61069 deals with the method which should be used to assess system properties of a
basic control system (BCS). IEC 61069 consists of the following parts.
Part 1: Terminology and basic concepts
Part 2: Assessment methodology
Part 3: Assessment of system functionality
Part 4: Assessment of system performance
Part 5: Assessment of system dependability
Part 6: Assessment of system operability
Part 7: Assessment of system safety
Part 8: Assessment of other system properties
Assessment of a system is the judgement, based on evidence, of the suitability of the system
for a specific mission or class of missions.
To obtain total evidence would require complete evaluation (for example under all influencing
factors) of all system properties relevant to the specific mission or class of missions.
Since this is rarely practical, the rationale on which an assessment of a system should be
based is:
– the identification of the importance of each of the relevant system properties,
– the planning for evaluation of the relevant system properties with a cost-effective
dedication of effort to the various system properties.
In conducting an assessment of a system, it is crucial to bear in mind the need to gain a
maximum increase in confidence in the suitability of a system within practical cost and time
constraints.
An assessment can only be carried out if a mission has been stated (or given), or if any
mission can be hypothesized. In the absence of a mission, no assessment can be made;
however, evaluations can still be specified and carried out for use in assessments performed
by others. In such cases, IEC 61069 can be used as a guide for planning an evaluation and it
provides methods for performing evaluations, since evaluations are an integral part of
assessment.
In preparing the assessment, it can be discovered that the definition of the system is too
narrow. For example, a facility with two or more revisions of the control systems sharing
resources, for example a network, should consider issues of co-existence and inter-operability.
In this case, the system to be investigated should not be limited to the “new” BCS; it should
include both. That is, it should change the boundaries of the system to include enough of the
other system to address these concerns.
The series structure and the relationship among the parts of IEC 61069 are shown in Figure 1.

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SIST EN 61069-5:2017
IEC 61069-5:2016  IEC 2016 – 7 –

IEC 61069: Industrial-process measurement, control and automation –
Evaluation of system properties for the purpose of system assessment
Part 1: Terminology and basic concepts
• Basic concept
• Terminology ‐ Objective
‐ Common terms ‐ Description of system
‐ Terms for particular part
‐ System properties
‐ Influencing factors
Part 2: Assessment methodology
• Generic requirements of procedure of assessment
‐ Overview, approach and phases
‐ Requirements for each phase
‐ General description of evaluation techniques
Parts 3 to 8: Assessment of each system property
• Basics of assessment specific to each property
‐ Properties and influencing factors
• Assessment method for each property
• Evaluation techniques for each property

IEC
Figure 1 – General layout of IEC 61069
Some example assessment items are integrated in Annex C.

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SIST EN 61069-5:2017
– 8 – IEC 61069-5:2016  IEC 2016
INDUSTRIAL-PROCESS MEASUREMENT, CONTROL AND AUTOMATION –
EVALUATION OF SYSTEM PROPERTIES FOR
THE PURPOSE OF SYSTEM ASSESSMENT –

Part 5: Assessment of system dependability



1 Scope
This part of IEC 61069:
– specifies the detailed method of the assessment of dependability of a basic control system
(BCS) based on the basic concepts of IEC 61069-1 and methodology of IEC 61069-2,
– defines basic categorization of dependability properties,
– describes the factors that influence dependability and which need to be taken into account
when evaluating dependability, and
– provides guidance in selecting techniques from a set of options (with references) for
evaluating the dependability.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60300-3-2, Dependability management – Part 3-2: Application guide
...