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IEC 81346-1 Ed. 2.0 b – Industrial systems, installations and equipment and industrial products – Structuring principles and reference designations – Part 1: Basic rules

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.