TABLE OF CONTENTS Key Learning Objectives
How to read a piping and instrument diagram drawn using ISA-5.1 symbols
How valves and controllers work
How to calculate line pressure drop and size and select pumps
How to design control schemes for common unit operations and whole processes
The process flowsheet shows the arrangement of the major pieces of equipment and their interconnection. It is a description of the nature of the process.
The Piping and Instrument diagram (P and I diagram or PID) shows the engineering details of the equipment, instruments, piping, valves, and fittings and their arrangement. It is often called the Engineering Flowsheet or Engineering Line Diagram.
This chapter covers the preparation of the preliminary P and I diagrams at the process design stage of the project.
The design of piping systems and the specification of the process instrumentation and control systems are usually done by specialist design groups, and a detailed discussion of piping design and control systems is beyond the scope of this book. Only general guide rules are given. The piping handbook edited by Nayyar et al. (2000) is particularly recommended for the guidance on the detailed design of piping systems and process instrumentation and control. The references cited in the text and listed at the end of the chapter should also be consulted.
The P and I diagram shows the arrangement of the process equipment, piping, pumps, instruments, valves, and other fittings. It should include
All process...
