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– the concept of reference designation group has been deleted; – the specific term “transition” has been avoided and been replaced by an improved textual description of this phenomenon in annex D; – a new clause about labelling is introduced; – the old annexes have been removed with the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. It has the status of a horizontal standard in accordance with /2.

PDF Catalog

PDF Pages	PDF Title
7	English CONTENTS
11	INTRODUCTION
13	Figure 1 – International standards providing a consistent system for designation, documentation and presentation of information
14	1 Scope 2 Normative references 3 Terms and definitions
16	4 Concepts 4.1 Object Figure 2 – Illustration of an object
17	4.2 Aspect
18	4.3 Technical system Figure 3 – Aspects of an object
19	4.4 Structuring 4.5 Function 4.6 Products and components Figure 4 – Illustration of a function and its sub-functions
20	4.7 Location
21	4.8 Types, occurrences and individuals
22	Figure 5 – Illustration of the concepts product, component, type, individual and occurrence Table 1 – Identification of types, occurrences and individuals within different contexts
23	5 Structuring principles 5.1 General Figure 6 – Illustration of structural decomposition of an object from different aspects
24	5.2 Forming structures (i.e. types and occurrences) Figure 7 – Illustration of a function-oriented decomposition and product-oriented composition
25	Figure 8 – Structure tree of object A (alternative 1) Figure 9 – Structure tree of object A (alternative 2)
26	Figure 10 – Constituents in one aspect of object type 1 Figure 11 – Constituents in one aspect of object type 2 Figure 12 – Constituents in one aspect of object type 5
27	5.3 Function-oriented structure Figure 13 – Structure tree of object type 1
28	5.4 Product-oriented structure Figure 14 – Illustration of a function-oriented structure
29	5.5 Location-oriented structure Figure 15 – Illustration of a product-oriented structure
30	5.6 Structures based on “other aspects” Figure 16 – Illustration of a location-oriented structure
31	5.7 Structures based on more than one aspect Figure 17 – Example of the use of “other aspect” Figure 18 – Illustration of an object accessible from three aspects, and where these aspects are used also for internal structuring
32	6 Construction of reference designations 6.1 General 6.2 Format of reference designations Figure 19 – Illustration of an object identified by means of one aspect and with sub-objects identified by means of another aspect
33	Figure 20 – Examples of single-level reference designations Figure 21 – Relation between a multi-level reference designation and its single-level reference designations
34	6.3 Different structures within the same aspect Figure 22 – Examples of multi-level reference designations with multiple prefix signs
35	7 Reference designation set Figure 23 – Example of reference designation sets
36	8 Designation of locations 8.1 General 8.2 Assemblies
37	Figure 24 – Example of designation of mounting planes inside a factory build assembly
38	9 Presentation of reference designations 9.1 Reference designations Figure 25 – Examples of designation of locations inside a factory build assembly
39	9.2 Reference designations set Figure 26 – Examples of presentations of multi-level reference designations
40	9.3 Presentation of identifiers for the top-node Figure 27 – Presentation of reference designations of a reference designation set Figure 28 – Different objects on a site identified with top node identifiers
41	10 Labelling Figure 29 – The common initial portion of reference designations Figure 30 – Labelling of reference designations
42	Annex A (informative) Historical background Figure A.1 – Scope of reference designation standards
44	Annex B (informative) Establishment and life cycle of objects Figure B.1 – Development situations of an object
47	Figure B.2 – The object’s life cycle
55	Annex C (informative) Manipulation of objects
56	Figure C.1 – Integration of external information by copying
57	Figure C.2 – Integration of an external object by referencing Figure C.3 – Three independently defined objects
58	Figure C.4 – Three separate objects with mutual relations Figure C.5 – The three objects are merged into one
59	Figure C.6 – Overview of the process system
60	Figure C.7 – Tree-like structures of the technical system
61	Figure C.8 – Completed structures of the technical system Figure C.9 – Structures with designated sub-objects
62	Figure C.10 – Structures with some merged-and shared objects Table C.1 – Possible reference designation sets
63	Figure C.11 – Relations expressed by reference designation sets in which both designations are unambiguous Figure C.12 – Relations expressed by reference designation sets in which one designation is ambiguous
64	Figure C.13 – Situations in the beginning of an object’s life cycle accessible from three aspects
65	Figure C.14 – Situations in the beginning of the life cycle of closely related objects, each accessible from one aspect
67	Annex D (informative) Interpretation of reference designations using different aspects Figure D.1 – Shift from function to product aspect Figure D.2 – Shift from product to function aspect
68	Figure D.3 – Shift from product to location aspect Figure D.4 – Shift from location to product aspect
69	Figure D.5 – Shift from function to location aspect Figure D.6 – Shift from location to function aspect
70	Annex E (normative) Object represented with several top nodes in an aspect Figure E.1 – Object represented with several independent top nodes in one aspect
71	Figure E.2 – Example of multi-level reference designations using different aspects of an object with several independent top nodes in one aspect
72	Annex F (informative) Examples of multiple structures based on the same aspect Figure F.1 – Illustration of the concept of additional functional views of an industrial process plant
73	Figure F.2 – Location-oriented structure of a plant Figure F.3 – Location-oriented structure within an assembly unit
74	Figure F.4 – Location-oriented structures of the plant
75	Figure F.5 – Example of additional product-oriented structures
76	Annex G (informative) Example of structures and reference designations Figure G.1 – Function-oriented structure of object type 1 Figure G.2 – Function-oriented structure of object type 2 Figure G.3 – Function-oriented structure of object type 5
77	Figure G.4 – Concatenated function-oriented structure tree of object type A
78	Annex H (informative) Example of reference designations within a system Figure H.1 – Process flow diagram for a material handling plant
79	Figure H.2 – Overview diagram of part of the process system (=V1) and part of the power supply system (=G1)
80	Figure H.3 – Structure tree for parts of the material handling plant
81	Figure H.4 – Layout drawing of the components of the MCC =G1=W1
82	Figure H.5 – Layout drawing of the locations of the MCC =G1=W1 Figure H.6 – Motor starter
83	Figure H.7 – Product- and location-oriented structure trees for the MCC
84	Table H.1 – Reference designation set for the constituents of the products MCC and motor starter
85	Bibliography

Published By	Publication Date	Number of Pages
BSI	2010	88


PDF Format	Searchable	Printable	Preview Now

Status	Under Review
Title	Industrial systems, installations and equipment and industrial product. Structuring principles and reference designations – Basic rules
Replaces	BS EN 61346-1:1996
Publisher	BSI
Committee	GEL/3
Pages	88
Publication Date	2010-01-31
Replaced By	BS EN IEC 81346-1:2022
ISBN	978 0 580 55511 4
Standard Number	BS EN 81346-1:2009
Identical National Standard Of	EN 81346-1:2009, IEC 81346-1:2009
Descriptors	Codes, Symbols, Electronic equipment and components, Numerical designations, Marking, Product design, Labels, Circuit diagrams, Electrical components, Engineering drawings, Classification systems, Designations, Graphic symbols, Manufacturers part numbers, Electrical equipment, Technical documents, Diagrams, Graphic representation
ICS Codes	29.020 - Electrical engineering in general

BS EN 81346-1:2009:2010 Edition

PDF Catalog

Related products

IEC 62023:2011

BS EN 62023:2012

IEC 62027:2011

IEC 81346-1:2009

BS EN 62027:2012

BS EN ISO 7083:2021 – TC