Chubu Electric Power Co. said Thursday it has finished building a huge sea wall at its Hamaoka nuclear power plant in Shizuoka Prefecture to protect the facility from a possible earthquake-triggered tsunami.

The construction of the sea wall, which stands 22 meters above sea level and is 1.6 kilometers in length, began in November 2011 — eight months after a huge earthquake and tsunami triggered a triple meltdown at Tokyo Electric Power Co.'s Fukushima No. 1 nuclear power plant.

Located on the Pacific coast, the Hamaoka complex is believed to be situated at what would be the epicenter of a potential massive earthquake in the Nankai Trough, which runs south of Honshu.