Kansai Electric Power Co. said Monday that it has halted the No. 3 unit at its thermal power plant in the city of Sakai, Osaka Prefecture, western Japan, due to a mechanical trouble.
The 400,000-kilowatt No. 3 unit was suspended manually at 12:35 a.m. Monday (3:35 p.m. Sunday GMT) after the valve, used to reduce pressure in its turbine by sending steam inside back to the condenser, stopped functioning, the firm said.
Kansai Electric will investigate the cause of the trouble by checking the valve, company officials said.
Since Dec. 19 last year, the company has been asking all customers in its service area of the Kansai western Japan region to reduce their electricity consumption by 10 pct or more from the year-before levels, due to a sharp fall in its power supply capacity following the suspension of most of its nuclear power reactors.