ISO 10628

ISO 10628 Diagrams for the chemical and petrochemical industry specifies the classification, content, and representation of flow diagrams. It does not apply to electrical engineering diagrams. ISO 10628 consists of the following parts: This document supersedes ISO 10628:2000 and ISO 10628:1997.
 * Part 1: Specification of Diagrams (ISO 10628-1:2014)
 * Part 2: Graphical Symbols (ISO 10628-2:2012)

General principles
common elements of flow charts consist of:
 * Block diagrams
 * Process flow diagrams
 * Piping and instrumentation diagrams (P&ID)