HAZOP Analysis is a technique of risk assessment of mainly industrial operations and is used extensively in a wide spectrum of manufacturing industries such as Oil and Gas, Chemicals, Pharmaceuticals, Food and Beverage, Pulp and Paper, Mining, Power Generation and so on. It is not so popular in industries like machine building or discrete parts manufacturing. HAZOP is actually and acronym that stands for HAZard and OPerability Study and is many times referred to as HAZOP Study instead of HAZOP Analysis, but both terms mean the same thing. Many times it is simply called HAZOP.

HAZOP involves the analysis of each portion of a plant, called as a “node”. Every node is analyzed, using certain guide words to understand the design intention of the node. For example a node may consist of a pump that transfers a hazardous liquid from a day tank to a processing plant. The intention in this case is to pump the liquid from the day tank to the plant, but there may be deviations in this intention. These deviations may be dangerous and cause accidents. For example what if the amount of liquid pumped is more than what it is supposed to pump? What happens in case the pump starts, but there is no flow or there is a reverse flow? All these conditions are analyzed using these guide words and then we have a complete list of all the things that can go wrong. We then try to build in corrective measures (called mitigations) of these deviations.

The following ppt is a good summary of the HAZOP technique. If you wish to learn about it in detail, then the best way is to take the Abhisam HAZOP e-learning course (details below). You can download this course to your own computer, or access it online instantly! Full of animations and simulations, real life examples, useful formats for carrying out your own HAZOP and a self assessment test, this e-learning package is all you need to become a HAZOP pro. Take the free online exam and on passing, you get a  HAZOP Competency Certificate too.

Click here for the HAZOP_ppt

To buy the course, simply select one of the three options below.

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.

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