The water that leaked out of the tank escaped through drainage holes into the basement of the building, but did not make it outside. No new water is being pumped into the fuel cooling pool at this time.
Leakage of 25 tons of water, which contains radioactive substances, occurred at the second unit of the emergency nuclear power plant Fukushima-1 in Japan. The water did not get into the environment.
According to plant operator TEPCO, the leak was discovered on August 9 after an abnormal drop in the water level in one of the water control tanks in the spent nuclear fuel cooling pool, NHK reported.
A check of the water level showed that it was within normal limits. The supply of new water was suspended and a robot was launched into the building to inspect the room. Thus, it was found that the water leaking out of the tank had gone through drainage holes into the basement of the building, but it had not leaked outside.
No new water is being pumped into the pool at this time. The operating company believes there is no problem with cooling the nuclear fuel as the temperature in the pool will rise to a maximum of 46 degrees Celsius, which is below the maximum reference values of +65.
A robot will be reintroduced into the Unit 2 building during this week to identify the exact location of the leak and its possible cause.
In April, Japan resumed discharging water from the Fukushima nuclear power plant into the ocean.