3. Choose between different approaches

3.1 Qualitative, semi-quantitative or quantitative method

Risk analysis methods can be divided into three categories:

• Qualitative: the aim of the analysis is to provide an assessment of probability and severity (probable or improbable, high severity or low severity).

• Semi-quantitative: the aim of the analysis is to give an order of magnitude of probability and severity (probability and severity classes are then used).

• Quantitative: the aim of the analysis is to provide quantified probability values and a precise assessment of severity (e.g. a precise count of the number of people affected by a hazardous event).

In France, the regulatory...