Process Diagram

The Three Types of Process  Diagrams

Process Diagrams are fundamental requirements for project design and engineering.  There are three types of process diagrams:

  1. Block Flow Diagram (BFD)
  2. Process Flow Diagram (PFD)
  3. Process and Instrumentation Diagram (P&ID)


Block Flow Diagram (BFD)

The Block Flow Diagram is the simplest form of Flow Diagram which provides an overall view of a process.  The diagram usually resembles an organized chart composed of text  boxes, process commodities and flow arrows.

Process Flow Diagram (PFD)

The Process Flow Diagram goes a little further than the Block Flow Diagram in that it provides more detail about major equipment, sub systems and flow path.  The PFD can also include the pressure and temperature information as well as main points of control.




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