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Hazid -Hazop Difference

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#1 kasri


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Posted 25 November 2012 - 07:38 PM

Dear all,
Please explain me how Hazid and Hazop different from each other.
Both related to study of Hazard identification and its safety measure, if it is whats is the difference between them.When we go for Hazid and Hazop.

#2 louisstann


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Posted 26 November 2012 - 05:13 PM

From what I have studied previously HAZOP basically deals with process related hazards whereas HAZID deals with non or other than process related hazards like facility hazards etc. HAZOP is mainly equipments or pipelines, whereas HAZID takes the facility as a node. HAZOP is on the internal of equipments and HAZID is on the external. Hope that helps.

#3 Shivshankar


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Posted 27 November 2012 - 08:22 AM


HAZOP (Hazard and Operability Study) is a risk analysis tool which is used to identify abnormalities and its causes and consequences in more complicated or comprehensive processes or operations or in simple words, to avoid hazardous unwanted incidents which may give rise to operability problems and may be significant in terms of damage to life, environment or property.

HAZID (Hazard Identification) is a general risk analysis tool for early identification of hazards or threats, where the purpose is to identify possible unwanted incidents within a discipline, operation or area. These possible incidents are classified with respect to consequences and probability. Measures are then implemented in order to reduce the risk to an acceptable level.

Check below link for more details.




Edited by Shivshankar, 06 December 2012 - 01:51 PM.

#4 archanabhat


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Posted 14 June 2013 - 11:32 PM

Kindly note that following link is not accessible




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