IEC 81346-1:2009

Industrial systems, installations and equipment and industrial products — Structuring principles and reference designations — Part 1: Basic rules

ig ig 2 5 2009-08-03T09:31:00Z 2009-08-03T09:31:00Z 1 215 1226 IEC 10 2 1439 10.6845 Clean Clean MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} IEC 81346-1:2009, published jointly by IEC and ISO, establishes general principles for the structuring of systems including structuring of the information about systems. Based on these principles, rules and guidance are given for the formulation of unambiguous reference designations for objects in any system. The reference designation identifies objects for the purpose of creation and retrieval of information about an object, and where realized about its corresponding component. This edition includes the following substantial changes with respect to the previous one: - a new introductory clause providing a description and explanation to the concepts used elsewhere in the publication; - a more comprehensive description of the structuring principles and rules for structuring are provided; - 'other aspects' are introduced, and the prefix sign # is assigned to these aspects; - the concept of reference designation group has been deleted; - the specific term 'transition' has been avoided and been replaced by an improved textual description of this phenomenon in annex D; - a new clause about labelling is introduced; - the old annexes have been removed with the exception of the annex showing an example of the application of reference designations within a system; - a new annex explaining the manipulation of objects is introduced; - 4 new annexes are introduced as rearrangement of detailed examples or explanatory information.

Systèmes industriels, installations et appareils, et produits industriels — Principes de structuration et désignations de référence — Partie 1: Règles de base

ig ig 2 5 2009-08-03T09:36:00Z 2009-08-03T09:36:00Z 1 234 1334 IEC 11 3 1565 10.6845 Clean Clean MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} La CEI 81346-1:2009 publié conjointement par la CEI et l'ISO établit les principes généraux pour la structuration des systèmes y compris la structuration des informations sur ces systèmes. Sur la base de ces principes, des règles et des lignes directrices sont données pour la formulation de désignations de référence non ambiguës applicables aux objets d'un système quel qu'il soit. La désignation de référence identifie des objets afin de la création et de la récupération d'informations sur un objet, et où réalisé au sujet de son composant correspondant. Cette édition inclut par rapport à la précédente les modifications techniques majeures suivantes: - un nouvel article d'introduction donnant une description et une explication des concepts utilisés dans le cadre de la présente publication; - une description plus complète des principes et des règles de structuration; - l'introduction d'"autres aspects" auxquels on assigne le signe # comme préfixe; - la suppression du concept de groupe de désignations de référence; - le terme spécifique "transition" a été évité et remplacé par une description textuelle améliorée de ce phénomène en annexe D; - l'introduction d'un nouvel article concernant l'étiquetage; - le retrait des anciennes annexes à l'exception de celle qui représente un exemple de l'application des désignations de référence au sein d'un système; - l'introduction d'une nouvelle annexe expliquant la manipulation des objets; - l'introduction de 4 nouvelles annexes correspondant à une réorganisation des exemples détaillés ou des explications.

General Information

• Status: Withdrawn
• Publication Date: 12-Aug-2009
• ICS: 25.040.01 - Industrial automation systems in general
• Technical Committee: ISO/TC 10 - Technical product documentation
• Drafting Committee: ISO/TC 10 - Technical product documentation
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 31-Mar-2022

Standards Content (Sample)

IEC 81346-1
Edition 1.0 2009-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial systems, installations and equipment and industrial products –
Structuring principles and reference designations –
Part 1: Basic rules

Systèmes industriels, installations et appareils, et produits industriels –
Principes de structuration et désignations de référence –
Partie 1: Règles de base

IEC 81346-1:2009

---------------------- Page: 1 ----------------------
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IEC 81346-1
Edition 1.0 2009-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial systems, installations and equipment and industrial products –
Structuring principles and reference designations –
Part 1: Basic rules

Systèmes industriels, installations et appareils, et produits industriels –
Principes de structuration et désignations de référence –
Partie 1: Règles de base

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XC
CODE PRIX
ICS 01.110; 29.020 ISBN 2-8318-1054-7

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– 2 – 81346-1 © IEC:2009
CONTENTS
FOREWORD.6
INTRODUCTION.8
0.1 General.8
0.2 Basic requirements for this standard .8
0.3 Required properties of the standard .9
1 Scope.11
2 Normative references .11
3 Terms and definitions .11
4 Concepts .13
4.1 Object .13
4.2 Aspect.14
4.3 Technical system.15
4.4 Structuring .16
4.5 Function .16
4.6 Products and components .16
4.7 Location .17
4.8 Types, occurrences and individuals .18
5 Structuring principles.20
5.1 General .20
5.2 Forming structures (i.e. types and occurrences) .21
5.3 Function-oriented structure.24
5.4 Product-oriented structure .25
5.5 Location-oriented structure.26
5.6 Structures based on “other aspects” .27
5.7 Structures based on more than one aspect.28
6 Construction of reference designations.29
6.1 General .29
6.2 Format of reference designations .29
6.2.1 Single level.29
6.2.2 Multi-level.30
6.2.3 Use of letter codes .31
6.3 Different structures within the same aspect .31
7 Reference designation set .32
8 Designation of locations .33
8.1 General .33
8.2 Assemblies.33
9 Presentation of reference designations.35
9.1 Reference designations.35
9.2 Reference designations set .36
9.3 Presentation of identifiers for the top-node .37
10 Labelling .38
Annex A (informative) Historical background.39
Annex B (informative) Establishment and life cycle of objects .41
Annex C (informative) Manipulation of objects .52
Annex D (informative) Interpretation of reference designations using different aspects .64

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81346-1 © IEC:2009 – 3 –
Annex E (normative) Object represented with several top nodes in an aspect .67
Annex F (informative) Examples of multiple structures based on the same aspect .69
Annex G (informative) Example of structures and reference designations .73
Annex H (informative) Example of reference designations within a system.75
Bibliography.82

Figure 1 – International standards providing a consistent system for designation,
documentation and presentation of information .10
Figure 2 – Illustration of an object.13
Figure 3 – Aspects of an object.15
Figure 4 – Illustration of a function and its sub-functions.16
Figure 5 – Illustration of the concepts product, component, type, individual and
occurrence.19
Figure 6 – Illustration of structural decomposition of an object from different aspects .20
Figure 7 – Illustration of a function-oriented decomposition and product-oriented
composition .21
Figure 8 – Structure tree of object A (alternative 1).22
Figure 9 – Structure tree of object A (alternative 2).22
Figure 10 – Constituents in one aspect of object type 1 .23
Figure 11 – Constituents in one aspect of object type 2 .23
Figure 12 – Constituents in one aspect of object type 5 .23
Figure 13 – Structure tree of object type 1 .24
Figure 14 – Illustration of a function-oriented structure .25
Figure 15 – Illustration of a product-oriented structure .26
Figure 16 – Illustration of a location-oriented structure.27
Figure 17 – Example of the use of “other aspect” .28
Figure 18 – Illustration of an object accessible from three aspects, and where these
aspects are used also for internal structuring.28
Figure 19 – Illustration of an object identified by means of one aspect and with sub-
objects identified by means of another aspect.29
Figure 20 – Examples of single-level reference designations .30
Figure 21 – Relation between a multi-level reference designation and its single-level
reference designations.30
Figure 22 – Examples of multi-level reference designations with multiple prefix signs .31
Figure 23 – Example of reference designation sets.32
Figure 24 – Example of designation of mounting planes inside a factory build assembly .34
Figure 25 – Examples of designation of locations inside a factory build assembly.35
Figure 26 – Examples of presentations of multi-level reference designations .36
Figure 27 – Presentation of reference designations of a reference designation set .37
Figure 28 – Different objects on a site identified with top node identifiers.37
Figure 29 – The common initial portion of reference designations .38
Figure 30 – Labelling of reference designations .38
Figure A.1 – Scope of reference designation standards .39
Figure B.1 – Development situations of an object .41
Figure B.2 – The object’s life cycle .44

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– 4 – 81346-1 © IEC:2009
Figure C.1 – Integration of external information by copying.53
Figure C.2 – Integration of an external object by referencing .54
Figure C.3 – Three independently defined objects .54
Figure C.4 – Three separate objects with mutual relations .55
Figure C.5 – The three objects are merged into one.55
Figure C.6 – Overview of the process system .56
Figure C.7 – Tree-like structures of the technical system .57
Figure C.8 – Completed structures of the technical system .58
Figure C.9 – Structures with designated sub-objects.58
Figure C.10 – Structures with some merged-and shared objects .59
Figure C.11 – Relations expressed by reference designation sets in which both
designations are unambiguous.60
Figure C.12 – Relations expressed by reference designation sets in which one
designation is ambiguous.60
Figure C.13 – Situations in the beginning of an object’s life cycle accessible from three
aspects.61
Figure C.14 – Situations in the beginning of the life cycle of closely related objects,
each accessible from one aspect .62
Figure D.1 – Shift from function to product aspect.64
Figure D.2 – Shift from product to function aspect.64
Figure D.3 – Shift from product to location aspect.65
Figure D.4 – Shift from location to product aspect.65
Figure D.5 – Shift from function to location aspect .66
Figure D.6 – Shift from location to function aspect .66
Figure E.1 – Object represented with several independent top nodes in one aspect.67
Figure E.2 – Example of multi-level reference designations using different aspects of
an object with several independent top nodes in one aspect .68
Figure F.1 – Illustration of the concept of additional functional views of an industrial
process plant .69
Figure F.2 – Location-oriented structure of a plant.70
Figure F.3 – Location-oriented structure within an assembly unit .70
Figure F.4 – Location-oriented structures of the plant .71
Figure F.5 – Example of additional product-oriented structures .72
Figure G.1 – Function-oriented structure of object type 1.73
Figure G.2 – Function-oriented structure of object type 2.73
Figure G.3 – Function-oriented structure of object type 5.73
Figure G.4 – Concatenated function-oriented structure tree of object type A .74
Figure H.1 – Process flow diagram for a material handling plant .75
Figure H.2 – Overview diagram of part of the process system (=V1) and part of the
power supply system (=G1) .76
Figure H.3 – Structure tree for parts of the material handling plant .77
Figure H.4 – Layout drawing of the components of the MCC =G1=W1 .78
Figure H.5 – Layout drawing of the locations of the MCC =G1=W1 .79
Figure H.6 – Motor starter.79
Figure H.7 – Product- and location-oriented structure trees for the MCC.80

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81346-1 © IEC:2009 – 5 –

Table 1 – Identification of types, occurrences and individuals within different contexts .19
Table C.1 – Possible reference designation sets.59
Table H.1 – Reference designation set for the constituents of the products MCC and
motor starter .81

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– 6 – 81346-1 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL SYSTEMS, INSTALLATIONS
AND EQUIPMENT AND INDUSTRIAL PRODUCTS –
STRUCTURING PRINCIPLES AND REFERENCE DESIGNATIONS –

Part 1: Basic rules


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
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
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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 81346-1 has been prepared by IEC technical committee 3:
Information structures, documentation and graphical symbols, in close co-operation with ISO
technical committee 10: Technical product documentation.
It is published as a double logo standard.
This edition cancels and replaces the first edition of IEC 61346-1, published in 1996. This
edition constitutes a technical revision.
This edition includes the following substantial changes with respect to the first edition of
IEC 61346-1:
– a new introductory clause providing a description and explanation to the concepts used
elsewhere in the publication;
– a more comprehensive description of the structuring principles and rules for structuring
are provided;

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81346-1 © IEC:2009 – 7 –
– “other aspects” are introduced, and the prefix sign # is assigned to these aspects;
– the concept of reference designation group has been deleted;
– the specific term “transition” has been avoided and been replaced by an improved textual
description of this phenomenon in annex D;
– a new clause about labelling is introduced;
– the old annexes have been removed with the exception of the annex showing an example
of the application of reference designations within a system;
– a new annex explaining the manipulation of objects is introduced;
– 4 new annexes are introduced as rearrangement of detailed examples or explanatory
information.
The text of this standard is based on the following documents:
FDIS Report on voting
3/947/FDIS 3/958/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. In ISO, the standard has been approved by 12 members
out of 13 having cast a vote.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the International Standard 81346 series, formerly IEC 61346 series, under
the general title Industrial systems, installations and equipment and industrial products –
structuring principles and reference designations, can be found on the IEC website.
Future standards in this series will carry the new general number 81346. Numbers of existing
standards in this series will be updated at the time of the next edition.
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.

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 publication using a colour printer.

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– 8 – 81346-1 © IEC:2009
INTRODUCTION
0.1 General
This standard establishes a further development of earlier and withdrawn standards
(IEC 60113-2, IEC 60750) on item designation, see Annex A. It provides basics for
establishing models of plants, machines, buildings etc.
The standard specifies:
• principles for structuring of objects including associated information;
• rules on forming of reference designations based on the resulting structure.
By applying the structuring principles, even very large sets of information in a complex
installation can be handled efficiently.
The structuring principles and the rules for reference designations are applicable to objects of
both physical and non-physical character.
The structuring principles and the rules for reference designations provide a system that is
easy to navigate within and easy to maintain. This system provides an excellent overview on
a technical system since composite structures are simple to establish and understand.
The structuring principles and the rules for reference designations support alternative design
and engineering processes in the life cycle of an object since they are based on the
successively established results of this process and not on how the engineering process itself
is carried out.
The structuring principles and the rules for reference designations allow, by accepting more
than one aspect, that more than one coding principle can be applied. This technique also
allows ‘old structures’ to be handled together with ‘new structures’ by using multiple
unambiguous identifiers.
The structuring principles and the rules for reference designations support individual
management for the establishment of reference designations, and enable subsequent
...