Article from NHK News :
" The operator of the damaged Fukushima Daiichi nuclear power plant has begun transferring highly radioactive water from the No.2 reactor to a waste processing facility.
Ahead of the operation, Tokyo Electric Power Company, known as TEPCO, sealed cracks in the walls of the facility and ensured that other measures were in place to prevent contaminated water from leaking.
After the government's nuclear safety agency checked procedures and safety measures, TEPCO began the operation on Tuesday morning.
About 25,000 tons of highly contaminated water has accumulated in the basement of the turbine building and a tunnel connected to the No.2 reactor. The water must be moved quickly, as it could escape into the ocean.
TEPCO says it plans to move about 480 tons of the water a day and it will take about 26 days to move about 10,000 tons to the waste facility near the No.4 reactor.
The utility firm estimates that about 67,500 tons of radioactive water has accumulated at the plant."