This part of 81346 International Standard, published jointly by IEC and ISO, establishes general
principles for the structuring of systems including structuring of 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.
A reference designation labelled at a component is the key to finding information about that
object among different kinds of documents.
The principles are general and are applicable to all technical areas (for example mechanical
engineering, electrical engineering, construction engineering, process engineering). They can
be used for systems based on different technologies or for systems combining several
technologies.
This document is also a horizontal publication intended for use by technical committees in
preparation of publications related to reference designations in accordance with the principles
laid down in IEC Guide 108.
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