
Chubu Electric Power Co.'s Hamaoka nuclear power station in Omaezaki city, Shizuoka prefecture,
The Nagoya-based company will start the process of shutting down the 1,137-megawatt No. 4 unit at Hamaoka around 3 p.m. local time tomorrow, Atsuo Sawaki, spokesman at the utility, said by telephone today. The 1,380-megawatt No. 5 reactor will be shut the following day, he said.
Chubu Electric this week agreed to Prime Minister Naoto Kan's call to close Hamaoka for as long as three years so it can build a sea wall and take other measures to protect the plant, which lies close to an active fault line. The station is located about 190 kilometers (118 miles) southwest of Tokyo.
An earthquake and tsunami on March 11 knocked out power equipment and cooling systems at Tokyo Electric Power Co.'s Fukushima Dai-Ichi station, causing the worst nuclear accident since Chernobyl and raising concern about the safety of other plants in Japan.