Risk is the potential to do harm or more generally the potential exposure to loss. The "potential" of a risk can be quantified as threat. The notion of threat is inherent in the definition of risk and can be conceptualized as the magnitude of negative conseguences from an event and the likelihood of the event happening. Some experts have established the following formula : risk=likelihood× consequences. The threat posed by the risk is a function of the likelihood of the event multiplied by the consequences of the risk. Efforts to quantities: