Mars 2011: Kärnkraftverket i Fukushima - utbruten och sammanfogad tråd

Tokyo Electric Power Co., the plant’s operator, yesterday switched to fresh water dousing of the No. 1 and No. 3 reactors to prevent further salt corrosion.

Tepco aims to turn lights on in the control room of the No. 2 reactor today and restore some radiation monitoring equipment, Teruaki Kobayashi, an official in the company’s nuclear facility management department, said at a briefing in Tokyo. "I can’t give a clear schedule for other facilities as we haven’t made much progress on pumps and other units."

Tepco plans to drain the residual sea water after dumping almost 4,500 tons on the No. 3 unit and 835 tons on No. 4, according to government data. Fresh water may be used to cool pool containing spent fuel rods at the No. 3 and No. 4 reactors tomorrow, Nishiyama said.

The nuclear agency said yesterday it doesn’t believe there is a physical crack in the pressure or containment vessels, which surround the core, at the No. 3 reactor. Leakage may be coming from pipes connected to the reactor.