A is a detailed schematic representing the functional relationship between piping, instrumentation, and process equipment in a facility . It serves as a master blueprint for design, construction, and operation, showing how measurement signals and control actions interact in real life. Primary Industry Standards
Standardization ensures that engineers worldwide can interpret diagrams consistently. Piping & Instrumentation Diagrams (P&ID) Guide - Lucidchart Piping and Instrumentation Diagram (P&ID) Standard