June 3, 2011
Tokyo Electric Power Co. said the amount of radioactive water accumulated at its stricken Fukushima Dai-Ichi nuclear plant increased to about 105 million liters (28 million gallons).
The water may start overflowing from service trenches after June 20, the company known as Tepco said in a statement. The amount of radiation in the water is estimated to be 720,000 terabecquerels, Junichi Matsumoto, a general manager at the company, said at a briefing in Tokyo today.
A de-contamination unit being built at the plant will start operating after June 15 and an underground tank capable of holding 10 million liters will be installed by the middle of August, Tepco said in the statement.
Tepco has pumped millions of liters of cooling water into the three reactors that melted down after an earthquake and tsunami on March 11 knocked out power and cooling at the Fukushima plant. Much of it has overflowed or leaked into basements, connecting tunnels and services trenches at the plant, which has six reactor buildings.