Chemical Plant

HAZOP Manager

Version 7.0



Note from John Lihou: All good things must come to an end. After 38 years of continuous development of HAZOP Manager, one of the very first commercial software tools for the recording and management of HAZOP Studies, the originator, chief developer, and inspiration behind HAZOP Manager, Mike Lihou, has become critically ill and cannot continue to run the business. My current career as an independent HAZOP and LOPA consultant does not afford me the time required to run Mike's company. This website will continue to be available as a resource for those interested in HAZOP. I will endeavour to provide continued technical support to our existing customers.

HAZOP Manager Version 7.0 is a comprehensive Personal Computer program for the management of Hazard and Operability Studies (Hazops) and other similar safety-related reviews*.  It is currently helping many companies throughout the world to conduct more efficient and effective studies.  The software incorporates features and facilities that:

HAZOP Manager Program illustration

  • Serve as a framework within which preparation for the review can be structured.
  • Ease the task of recording the meeting minutes, and help to maintain the team's focus of attention and interest.
  • Give speedy access to material useful to the study team, such as previously identified problems, failure rate data and other such historical information.
  • Allow professionally formatted reports to be produced with the minimum of effort.
  • Permit additional management information to be extracted from the study records.
  • Provide a comprehensive and easy to use system for effective action follow-up and close-out, without the significant administrative burden that this usually entails.

To learn more about the HAZOP Manager software, and how it can help you in your safety, health and environmental review work, please use the menu displayed at the top of this page.

* As its name suggests, the software is most frequently employed to record and manage Hazop Studies, as arguably this is the most widely used loss-prevention technique.  However, it is designed to be easily configured for use in other familiar methodologies such as Process Hazards Analysis (PHA), check-list driven Hazard Identification Reviews (HazId), Risk Assessment Studies, SIL Analysis, Failure Mode and Effect Analysis (FMEA), etc.  As an indication of its flexibility, users have also employed the program for Project Cost & Schedule Risk Management, Workplace H&S Regulatory Compliance Reviews, Hazards of Construction Reviews, Preliminary Hazards Analysis, Conceptual Project Studies, and so on.  In other words, the software can be utilized for most reviews where it is required that the results are both recorded and reported, and which generate actions that need distribution and subsequent verification that they have been satisfactorily completed.