Reading a P&ID

Learning objectives

  • Identify symbols for selected vessels, compressors, heat exchangers, valves, and pumps
  • Identify instrument symbols
  • Describe how the instruments in control loops are named on a PID
  • Identify piping and determine information about a pipeline including:
    • Material in the line
    • Size of the pipe
    • Line number
  • Recognize the different types of lines including pneumatic, hydraulic, electric, and signal lines

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.

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