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Course Description

Many processes today are automated and computer control systems play vital roles in their safe operation. The importance of computer control systems merits the performance of hazard analysis explicitly on them. Special techniques, such as the computer hazard and operability (CHAZOP) study, have been developed for this purpose.

This course teaches participants how to use CHAZOP, What-If, and Failure Modes and Effects Analysis (FMEA) to identify hazard scenarios originating in control systems. Preparation, organization and conduct of studies are covered. Attendees participate in workshops to practice use of the methods taught.

You will learn:

  • Why hazard analysis is needed for control systems.
  • How CHAZOP, What-If and FMEA are used for control systems.
  • What types of failures occur in control systems.
  • Who should participate in CHAZOP studies.
  • What information is needed for CHAZOP studies.
  • What process deviations should be addressed.
  • How control systems should be noded.
  • How risk can be reduced in control systems.
Course attendees receive a detailed course manual.


Be able to effectively and efficiently perform hazard analysis for control systems.

Target Audience

Personnel responsible for hazard analysis of control systems, participants in CHAZOP studies, automation professionals.


Experience or formal training as a PHA team leader, such as Primatech's training course, Process Hazard Analysis (PHA) for Team Leaders or Principles of PHA for Team Members.

Course Contents

  • Overview
  • Characteristics of control systems
  • HAZOP, What-If and FMEA for control systems
  • Failures in control systems
  • Study preparation
  • Design representations for control systems
  • Design intent for control systems
  • Use of HAZOP guide words for control systems
  • Information requirements
  • Team composition
  • Noding for CHAZOP studies
  • Conducting studies
  • Risk reduction for control systems

Duration / Credits

  • One day
  • 0.7 CEUs or 7 PDHs awarded


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