A Piping & Instrumentation Diagram (P&ID) is a schematic representation of the equipment, instrument, piping, and any miscellaneous items with corresponding the design data of processing units, utility systems, and offsite systems serving a processing unit that is used for the design basis and provided the key process information to all involved disciplines. A P&ID allows the design to progress from the Process Flow Diagram (PFD) with the standard numbering systems that facilitates the design processes, manufactures, and constructions, and communicates information to the Client. A P&ID includes a unique plant item number for each item of equipment, valve, instrument, and line, and ideally a line number includes a size, material, and fluid content identifier to enable the anyone reading the drawing to obtain thes information without having to refer to other documents. Approved P&ID is the basis of HAZOP and SIL review. A P&ID is a deliverable document of the FEED and Detailed Design and Engineering generated by the multidisciplinary efforts. (Refer to the Intelligent P&ID)
Related Definitions in the Project: The Engineering; Process Engineering; CSI Engineering; Piping and Pipeline Engineering; FEED Deliverable; Detailed Design and Engineering Deliverable