Report: APP CMHS Project 4




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2.1.8. Risk Analysis Techniques

There are three broad styles of risk analysis used within the risk assessment – quantitative, semi-quantitative and qualitative.

  • Quantitative analysis is used where there is significant potential for major accidents. It uses a statistical and factual basis to estimate the actual risk of injury. It is critical to have valid auditable data on which to base the analysis. http://mishc.uq.edu.au/Publications/Databases_for_Equipment_Failure011.pdf

  • Semi-quantitative analysis combines qualitative and quantitative techniques in the risk ranking step. Typically, a quantitative measure is used for estimating consequence (such as fatality frequency rate for a particular task, such as drilling) and a qualitative measure used for estimating likelihood. http://home.att.net/~d.c.hendershot/papers/pdfs/aiche11-02paper281a.pdf

  • Qualitative analysis uses a simple risk ranking matrix and assigns values or rank based on personal experience only. The assessment of likelihood and consequence are not based on fact and are not justifiable numbers, they are simple rankings based on group experience and consensus.


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