File photo shows a worker standing in front of a tsunami defence wall at Chubu Electric Power Co.'s Hamaoka Nuclear Power Station in Omaezaki

 
File photo shows a worker standing in front of a tsunami defence wall at Chubu Electric Power Co.
A worker stands in front of an 18-meter (59 ft) high and 1.6 km (1 mile) long tsunami defence wall at Chubu Electric Power Co.'s Hamaoka Nuclear Power Station in Omaezaki, Shizuoka Prefecture in this May 17, 2013 file photo. REUTERS/Toru Hanai/Files
Tags: Tsunami