TS EN 61355-1

TS EN 61355-1 is Part 1 of the standard for classifying and designating documents for plants, systems and equipment according to the characteristic type of information they contain. In technical documentation, documents may look similar in form yet serve different purposes, and distinguishing them consistently matters in design control, operation, maintenance and change management. This standard provides a common framework for identifying document kinds so that drawings, diagrams, lists, instructions and related records can be designated more consistently across organisations and international projects.

The technical role of document classification

The standard focuses on what information a document carries rather than on its physical format. In general technical context, engineering documentation may be used to express design intent, describe connections between equipment, record test results, provide operating guidance or support maintenance activities. These functions call for different document types, and consistent classification is important for retrieval, archiving, revision control and integration with digital document databases.

What this edition covers

Based on IEC 61355-1:2008, this edition provides rules and classification tables for document designation. According to the source information, the second edition replaces the first; Table A.2 has been extended under code P, and Table B.1 from the first edition has been omitted and replaced by a separate database standard, IEC 61355 DB. TS EN 61355-1 is therefore not merely a catalogue of documents, but the foundational classification standard used to assign structured designations to document kinds.

IEC 61355 DB is intended to be used together with IEC 61355-1, linking brief definitions of internationally standardized document kinds with references to suitable information sources and the applicable classification. In practice, this kind of structure supports a shared language for document management in complex plant and equipment environments, while the detailed classification scheme should be understood in relation to the edition and tables used in this standard.