Chubu Electric Power Co.'s Hamaoka nuclear power station

Chubu Electric Power Co.'s Hamaoka nuclear power station

Tomohiro Ohsumi/Bloomberg

A man walks past a tsunami barrier under construction in front of Chubu Electric Power Co.'s Hamaoka nuclear power station in Omaezaki, Shizuoka Prefecture, Japan on Feb. 26, 2014. The most visible change at Hamaoka is the construction of a 1.6-kilometer-long concrete tsunami wall, reinforced with 40,000 metric tons of steel.