Quote Originally Posted by ali View Post
What is the different between quantitatively risk assessment and qualitative risk assessment?
dear ALI,
Qualitative RA is a method to recognize risk quantitatively. The techniques used for this are HAZOP, PHA WAHT-if.etc. in all these u can recognizes what will be effect of any unsafe condition quantitatively. For example consider a hydrocarbon STORAGE TANK and use guide word MORE then unsafe condition will be MORE filling of Hydrocarbon and consequence will be SPILLAGE, FIRE, TOXIC release etc. Hear you recognize hazard quantitative way.
On the other hand in QUALITATIVE approach u can quantify the hazard in terms of probability , likelihood, severity etc. Again as above example, we can assign severity 4 out of 4 and probability 1 out of 4 So risk will be 4*1=4.technique used for this is like FMEA HIRA etc.

Well sir i am pursuing M-TECH in HSE and did b-tech in SAFETY AND FIRE eng and having a little experience of 1 year, hopefully i replied your answer as per my present knowledge.