What external risks need to be taken into account in a hazard analysis?
Hazard analysis: identifying external risks

They are also called "natural sources of aggression" and can have several origins:

• Extreme weather conditions such as hail, frost, heatwave, snow, fog, ice, floods and/or avalanches. Ten-year floods, for example, must be taken into account to determine the amount of meteoric rainfall that can wash away waterproofed soils on an industrial site.

• Extreme weather conditions, i.e. storms, lightning, cyclones and tornadoes (not – or only rarely! – encountered in mainland France).

• Extreme geological...