HAZOP stands for HAZard and Operability study (it is an acronym) that was first introduced in the chemical industry by UK’s ICI (Imperial Chemical Industries). HAZOP can be defined as a structured risk assessment technique, that uses certain well defined “guide words” to analyse the possible deviations in a process node. Thus HAZOP is primarily used as a Risk Assessment technique, even though it has the word “operability” as part of its acronym. No doubt HAZOP is also used to test the operability aspects of a plant, but it is more used for analysing safety.

The HAZOP technique requires that the equipment or facility to be considered for analysis be broken down (conceptually of course!) into several nodes. Then each node is analyzed by the HAZOP analysis technique and findings noted down and compiled to get a Risk Assessment report.

A node can be any part of a process such as a storage tank, or batch reactor or a distillation column. The HAZOP analysis technique then parses these guide words in a structured way, so that all deviations can be listed and analyzed. If these deviations could result in accidents or other undesirable events, then mitigation (corrective) measures are suggested. The HAZOP technique has been well developed over the past 40 years or so and has become established as a primary risk assessment technique, not only in the process industries, but in also other industries, such as mining, power generation, fertilizers, pharmaceutical bulk drug production and so on. It has also been attempted to be used in the software industry, but had limited success. Notably HAZOP is generally not used in discrete parts manufacturing such as automobile manufacturing or machine tools production.

If you have come here to not just get the HAZOP definition, but also study and master the HAZOP Study technique, then why don’t you get the Abhisam HAZOP e-learning course below? You will not only get an excellent and easy way to train yourself in the HAZOP Study technique (going far beyond the HAZOP definition of course), but you can also get Certified for free! You read that right, once you buy the HAZOP Course (any version) you get a chance to take the Abhisam Online HAZOP exam and get Certified for free. You also get the Abhisam electronic badge that follows the Mozilla Open Badge framework, so that you can display your badge on your LinkedIN profile , or as part of your email sign! Get noticed by your peers and your bosses, future employers and clients.

To buy the course, simply select one of the three options below. If you are an organization, then this same course is also available as an Enterprise solution with even SCORM compatible versions that run inside of your organization’s LMS (Learning Management System).

What’s more you can get this HAZOP software (e-learning course) in various versions too- whether you are looking for online access or would like to download it to your PC. Check out the various versions below.

(works with any Windows OS such as XP, Vista, 7, 8, 8.1 or 10).

HAZOP Course


1. Standard Download Version (works on any ONE PC, ONE year License, Windows OS only)

$499 US only


2. Online Version (NO Download, get online access for ONE MONTH, Windows or Mac)

$299 US only


3. Enterprise Version (with several BONUS modules).  Train 10 learners for  $3999 US only for ONE year.  Access from any PC/Mac/Tablet that supports a browser with Flash



Not Sure? See the Demo here!

View online  (requires your browser to support Flash)

Hazard and Operability Study Resources