Process DiagramsEC/PROCREP

Who should attend?

  • This course provides practical keys to read and use process diagrams.
Audience :
  • Technical staff using process diagrams.

Level : Foundation

Course Content


      • Splitting a process in blocks. Elaborating a block diagram.
      • Use of a PFD, added value compared to the block diagram. Type of information included in a PFD.
      • Symbols used for each element.
      • Importance of Utility Flow Diagrams (UFD). Complementarity with process flow diagrams.

      • Purpose of PIDs: users from engineering phase to operation.
      • Process and utilities PIDs. Key elements indicated on PIDs. PID legend. Typical symbols.
      • Design and organization of a PID, level of detail. notes, holds, comments.
      • Contents of a PID. Evolution according to design/operation phases.
      • Documents associated with a PID.

      • Design reviews: focus on HSE and operability with HAZOP review.
      • Organization of the review, selection of attendees. Action plan. Validation. Reporting and follow-up process.

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • use the symbols of a PID legend,
  • read process diagrams,
  • efficiently participate to a PID review.

Ways & Means

  • Use of a set of complex PIDs to understand process flow, instrumentation loops, equipment characteristics…
  • PID review with checklist/HAZOP initiation.