HAZID (HAZard IDentification)


Identifying occupational, facilities and external hazards


The HAZID review is a methodology to identify hazards in order to plan for, avoid, or mitigate their potential impact. Hazard identification is an important step in risk assessment and risk management.

The HAZID method is suitable for all types of industries and can be applied to almost any system. Various methods have also been developed to enable HAZID to cover every phases of a project, including early conceptual phase, options selection, FEED, etc.


The HAZID review will identify hazards and safeguards at an early stage in the design of a facility. The objective is twofold: the management of HSE risks during the project development and the traceability, as a result of an exhaustive recording, of this risk management.


The HAZID process follows 4 steps:

  • Risk Identification,
  • Risk Assessment,
  • Risk Improvement (Management & Reduction),
  • Final Risk Checking and Progression to next project phase.

These four steps are the basis of HazOptima LOGO.


HazOptima provides high quality HAZID reviews based on very effective leaders to head up the HAZOP team. Our chairmen are highly experienced and completely focused on HSE reviews, having both a Safety and a Process background. This ensures a broad and extensive knowledge of the given industrial context that enables us to guide the team efficiently.

The HAZID reviews can be:

  • qualitative or semi-quantitative,
  • reviewing a facility or a procedure (e.g. installation or commissioning HAZID),
  • analyzing a frozen system or comparing different options,
  • stand-alone or in complement to further analysis (ENVID, HRA, etc.).


Our goal is to ensure:

The proper procedure for the relevant review at the best time.

Our services deal with HAZID reviews preparationfacilitatingreportingfollow-up and training.

We can work on all activities where hazards are generated (i.e. all activities!).

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What is the result of a HAZID review?

The HAZID report is the documented demonstration of risk acceptability. This can be of a qualitative or a semi-quantitative type. The report shall include the list of actions recommended or mandatory to achieve the acceptable level of risk.


HazOptima reports include a clear and exact record of discussions raised during the review, as well as actions list and dedicated action sheets for easier response and follow-up.

We employ the main software available on the market when carrying out our reviews and more specifically HAZOP Manager developed and produced by Lihou Technical & Software Services.

What is the basic methodology of HAZID reviews?

In few words, the HAZID methodology is the following one:

  • the installations are divided into homogeneous sections, called “areas”,
  • for each area a list of guide-words is systematically applied to identify potential hazards,
  • for each hazard, the team determines its potential causes, consequences and safeguards,
  • the team concludes on the scenario acceptability or proposes actions for improvement or investigation.

This is only the basic process that can be further developed to include risk ranking, actions categorization, scenario selection, options comparison, etc.

For more information please contact us.

What do you need to perform HAZID reviews?

HAZID reviews can be performed based on plant layouts, PFDs (Process Flow Diagrams), installation procedures, SIMOPS descriptions, or other document. HazOptima helps you to define the requisite documentation pending your constraints and objectives.

What is the scope of HAZID reviews?

The scope of HAZID reviews can vary significantly according to your objectives, project phase, information availability, type of process, and overall organization within your Company. HazOptima helps you to come up with the best procedure including the scope of work, rules and planning.

How long does a HAZID reviews take?

Depending on project complexity and the scope defined in the HAZID procedure, reviews can take from one day to one or two weeks. HazOptima can help you to define your planning at an early stage of the project.

For more information please contact us.


  • “Step 1 – Hazard Identification” – Risk Assessment – USA Environmental Protection Agency – 25 July 2012,
  • Other references: do not hesitate to contact us.