Documentation:CHBE Exam Wiki/3.2 - Process and Instrumentation Diagram (P&ID)
3.2 – Process & Instrumentation Diagram (P&ID)
3.2.0 – Learning objectives
By the end of this notebook, you should be able to:
- Identify components of a Process & Instrumentation Diagram (P&ID).
- Identify the difference between a Block Flow Diagram (BFD), Process Flow Diagram (PFD) and a Process & Instrumentation Diagram (P&ID).
3.2.1 – Introduction
A P&ID is a detailed flow diagram of an entire process, like a chemical plant or wastewater management system. A P&ID includes:
- Piping
- Vessels
- Instrumentation
- Control devices
The main difference between a P&ID and a process flow diagram (PFD) is that a P&ID contains the details and dimensions of the piping, vessels, instrumentation and control devices instead of just the general types. A P&ID is much more detailed than a block flow diagram (BFD) because a BFD only uses a block or rectangle to represent individual steps in the process.
You will not be tested based on a P&ID, nor will you be asked to retrieve information