What kind of hazards to nuclear power plants occur that originate outside the plants?

External hazards originate outside the site, and may affect the plant or station as a hole. The following external hazards have to be considered and, where appropriate for the particular circumstances of the site, taken into account in the plant design:

• Earthquakes.

• Extreme weather, for example, extreme air or sea temperatures, wind speed, rain or snow, lightning, tornados, or hurricanes.

• Site flooding, for example by tidal waves.

• Aircraft crashes.

• Ground settlement and subsidence.

• Hazards from off-site industrial activity.

• Dangerous substances.

• Sabotage.

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