Saturday, May 7, 2016

Some basic for Process Flow Diagram ( PFD) & Process (Piping) and Instrument Drawings


Process Legend or Symbols

The process legend are like alpha bates of the Process Engineers language.
They provides the information needed to inter­pret and read the P&ID ( The book). Process legends are found at the front of the PFD and  P&ID. The legend includes information about piping, instrument and equipment.

Some symbols are common among plants; others differ from plant to plant. Some standardization of process symbols and diagrams is taking place. The symbols used in the tutorial reflect a wide variety of Oil and Gas Domain.

Process Flow Diagrams

New Engineers and technicians are required to study a simple flow diagram of their as­signed Design Project or the operating system. Process flow diagrams typically include the major equipment and piping path the process takes through the unit. As Engineer learn more about symbols and diagrams, they graduate to the much more complex P&IDs


Please click below link to read a brief but effective guideline for understanding the same.

PFD & P&ID Tutorial