TS ISO 14084-2

TS ISO 14084-2 is the standard for graphical symbols used in process diagrams for power plants. It also provides guidance for creating new graphical symbol examples. In practical terms, it supports a common drawing language so that plant processes, equipment and flows can be represented consistently across engineering documentation.

Why symbol consistency matters in plant diagrams

In power plant projects, process diagrams help engineers communicate flows, major equipment, measurement points and functional relationships in a compact visual form. Graphical symbols make those diagrams readable across disciplines and project stages. Well-defined symbols improve clarity in design, operation, maintenance and documentation, while reducing the risk of misinterpretation when several teams work from the same drawings.

How this standard relates to other symbol systems

This standard is described as a collective application standard of the ISO 14617 series, meaning it applies the broader ISO symbol framework to the power plant process-diagram context. It also points users to ISO 1219-1 for fluid power diagrams and IEC 60617 for electrotechnical diagrams. That distinction matters because process, hydraulic/pneumatic and electrical documentation often use different symbol families, each with its own technical meaning and conventions.

• Graphical symbols for power plant process diagrams
• Guidance for creating new symbol examples
• Collective application approach aligned with ISO 14617
• Reference route for fluid power diagrams via ISO 1219-1
• Reference route for electrotechnical diagrams via IEC 60617