The site of Daya Bay was carefully selected according to international guidelines and stringent safety assessment of the National Nuclear Safety Administration, which the following criteria have been taken into account:

Suitable seismological and geological conditions
Low risk of meteorological hazards such as flooding, tidal waves and severe storms, as well as adequate cooling water sources
Reliable power grid connection
Sufficient distance from commercial flight paths, major cities and hazardous industrial installations

Low Earthquake and Tsunami Risk

Daya Bay locates in a seismically stable region (20km from nearest capable fault and 1,000km from the tectonic boundary).

Barriers to Reduce the Impact of a Tsunami from the Pacific Ocean

Daya Bay is sheltered by large islands and sited on the shore of a shallow sea – which provide a natural shelter from the impacts of severe oceanic conditions caused by tsunami.

Daya Bay is located 45km from the centre of Shenzhen and 50km from the city centre of Hong Kong

To minimise power loss during transmission, a power station will not be constructed too far away from the major users of electricity. At the same time, sufficient distance between the power station to its nearby cities is required to ensure communal safety.

A massive tsunami is usually triggered by a deep-water earthquake at Level 6.5 or above at the Modified Mercalli Scale and a sea level of more than 1,000 metres in depth. The sea off the coast of Guangdong Province of China is relatively shallow and the site of Daya Bay is seismically stable. As such, the possibility of a massive earthquake or tidal wave affecting the site is extremely slim.