9/12/2023 0 Comments Flow meter isometric symbolIt includes both major and minor details of the chemical process. Piping / Process & Instrumentation Diagram (P&ID)Ī Piping and Instrument Drawing (P&ID) includes more details than a PFD. Process engineers are responsible for designing PFD based on the chemical process and thermodynamic properties of the fluid in question. PFD gives an overview of the complete chemical plant processes. Generally, a PFD does not show minor components (like pressure, temperature and flow instruments), piping systems (like control loops, by-pass lines, drain lines etc), pipe properties (like size, spec, ratings etc) etc. This diagram shows flow of chemical fluids and the equipment’s involved in the process with the properties of flowing chemical fluids (like temperature, pressure, fluid density, flow rate etc). Process Flow Diagram (PFD)Ī process flow diagram shows the relationships between the major equipment’s (columns, vessels, pumps, turbines, heaters etc) in the system. These drawings are very useful as they convey the right amount of process information as needed during various stages of bidding, engineering design, procurement, construction, operating & commissioning phases of the process. Both PFD (Process Flow Diagram) and P&ID (Piping/Process & Instrumentation Diagram) are chemical / process engineering drawings.
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