AFTER the events of March 11th 2011, when an earthquake and tsunami led to a meltdown of three nuclear reactors at the Fukushima Dai-ichi power plant in Japan, you might be forgiven for concluding that atomic power and seawater don’t mix. Many engineers, though, do not agree. They would like to see more seawater involved, not less. In fact, they have plans to site nuclear power plants in the ocean rather than on land—either floating on the surface or moored beneath it. A reactor anchored on the seabed would never lack emergency cooling, the problem that caused the Fukushima meltdown. Nor would it need to be protected against the risk of terrorists flying an aircraft into it. It would be tsunami-proof, too. Though tsunamis become great and destructive waves when they arrive in shallow water, in the open ocean they are mere ripples. Indeed, were it deep enough (100 metres or so), such a submarine reactor would not even be affected by passing storms.
Economist 10th Aug 2017 read more »