This recommended practice (RP) addresses the processes required to successfully implement process control systems (PCSs) for oil and gas production, refinery, and petrochemical services. The major topics addressed in Part 1 are the basic functions that a process control system may need to perform, and recommended methodologies for determining the functional and integration requirements for a particular application.

This document is not intended to present a tutorial on the subject discussed, but rather to aid the reader in identifying and understanding the basic concepts of PCSs.