What is the difference between a Piping and Instrumentation Diagram (P&ID) and a Process Flow Diagram (PFD)?

Question

Accepted Answer

P&ID shows detailed piping and instrumentation information, while PFD shows overall process flow.

P&ID includes detailed information on piping, valves, instruments, equipment, and control systems.
PFD provides an overview of the entire process flow, showing major equipment and key control loops.
P&ID is used for detailed engineering design and implementation, while PFD is used for process understanding and analysis.
P&ID is typically more complex and includes specific details for construction and operation.
PFD is more simplified and focuses on the overall process flow without intricate details.

Top Glatt Systems Piping Engineer interview questions & answers