Chubu Electric Power Co., Japan's third-largest power producer, shut its Hamaoka No. 4 reactor, as equipment to clean cooling water closed down last night following an alarm.
Chubu Electric idled the reactor in Shizuoka prefecture, southwestern Tokyo, at 9:57 p.m. local time yesterday, the company said in a statement on Web site. There were no radiation leaks, it said.
The Nagoya-based utility restarted the 1,137-megawatt reactor after scheduled maintenance on Nov. 14.
UNIT LOCATION MW STATUS
Hamaoka No. 1 Shizuoka 540 Shut for maintenance
No. 2 840 Shut for maintenance
No. 3 1,100 Running
No. 4 1,137 Shut manually
No. 5 1,380 Running