8. Glossary – Definitions

Danger; Hazard

This concept defines a property intrinsic to a substance (butane, chlorine...), a technical system (pressurization of a gas...), an arrangement (elevation of a load), an organism (microbes), etc..., of such a nature as to cause damage to a "vulnerable element" [the notion of "danger" thus includes the notions of flammability or explosiveness, toxicity, infectious character, etc. inherent in a product, and that of available energy (pneumatic or potential) which characterize the danger] (definition taken from the circular of May 10 2010).

Risque; Risk

"Combination of the probability of an event and its consequences" (ISO/IEC 73), "combination of the probability of damage and its severity" (ISO/IEC 51).

Central hazardous event; Événement redouté central

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