611-02 - Reading a PID

611-02 - Reading a PID

Learning objectives

  • State the purpose of a Piping and Instrument Drawing (PaID)
  • Identify common symbols used on a PaID: valves and valve operators, pumps and other equipment, fluid power components, and instrumentation detectors, transmitters, and controllers
  • Identify how different pipe and wiring types are indicated on a PaID
  • Given an example PaID, identify components and process flow paths

Course overview

Being able to read a P&ID is an important part of understanding where equipment is and how it fits into the system process. The Reading a P&ID training course focuses on the key elements of the main diagram, the way it identifies the instrumentation and equipment, and the relationship between components.

This online course discusses the P&ID elements, common equipment symbols, instruments and instrument control loops, and line designations. Reading a P&ID is part of the Prints and Drawings Series.


The individuals involved in the development and promotion of this course do not receive any compensation or financial benefits outside of their regular employment for their work on this course.


  • 35 minutes
  • Format: Online Interactive
  • English
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