Fukushima Daiichi Nuclear Power Plant Leakage of coolant on frozen ground Wall operated with measures to reduce contaminated water January 9 23:27
TEPCO has rushed to identify the cause because some of the coolant on the frozen ground, which is being used as a measure to reduce the generation of contaminated water at the Fukushima Daiichi Nuclear Power Station, may have leaked.
The frozen wall started operation four years ago to freeze the ground around the Fukushima Daiichi nuclear power plant building, prevent the inflow of groundwater, and reduce the generation of contaminated water.
This is a mechanism in which a freezing tube is buried in the ground and coolant is circulated inside it to freeze the ground.
According to TEPCO, the water level in the tank storing this coolant dropped from July 7 to 8, and the circulation of the coolant stopped, and the water level stopped.
Due to this, coolant may have leaked from some freeze tubes, and the amount was estimated to be about 1600 liters.
TEPCO says that even if the coolant circulation is stopped, it will take several months for the ground to start melting, so there is no effect on the function of the frozen soil wall, but if the cause is hurried to identify and repair measures etc. are considered doing.