TS EN ISO 10628-1

TS EN ISO 10628-1 defines how flow diagrams used in the chemical and petrochemical industry are classified, what information they contain, and how they are represented. These diagrams translate process flow into a clear visual language so engineering teams can view the overall plant arrangement, the links between equipment, and the main process steps in a common format. The standard is a core reference where consistent technical presentation of these diagrams is needed in projects.

The technical role of flow diagrams

In chemical and petrochemical plants, flow diagrams are used at different stages from conceptual design through detailed engineering. In general technical practice, they are used to show major equipment, principal stream relationships, material movement, and the basic layout of the process. The scope of ISO 10628-1 focuses on the classification and representation rules for these diagrams, helping the same plant data to be read more consistently and with less room for interpretation across disciplines.

Scope boundaries and application context

This part does not apply to electrical engineering diagrams. It is also positioned as a collective application standard of ISO 15519, which places flow diagrams within a broader documentation and designation framework. In practice, standards of this type support a common terminology and symbol logic for process equipment, piping relationships, and operational flow. That improves technical communication between design, operation, maintenance, and project coordination activities.