To conveniently layout out and demonstrate the physical sequence of systems with the focus on the control and shutdown schemes, safety and regulatory requirements, and the basic start-up and operational details. To operate, maintain and modify the process system efficiently To better understand the design conditions of an engineering project The latter type shows a picture of the separate steps of a process in sequential order.Ĭoncerning the usage of pip design diagram, there are some points listed below: Piping and instrumentation diagram also has a close relationship with the Process Flow Diagram (PFD). To read a piping and instrumentation diagram, simply break down the overall diagram into smaller parts and then trace from a single equipment and follow the pipeline. And this kind of diagram is mainly used for laying out a process control installation.Ī piping and instrumentation diagram displays the piping components (for example equipment, valves, reducers and so on) of an actual physical process flow and is often used in the engineering projects, such as setting up steam boilers, heat exchangers, electric boilers and more. It presents the interconnection of process equipment and the instrumentation which is used to control the process. Piping and instrumentation diagram, also called P&ID, is a drawing in the process industry. Part 1: What is The Piping Design Diagram