At Unit 1 of the Fukushima Daiichi Nuclear Power Station, where decommissioning work is being carried out, the water level in the containment vessel containing the reactor has continued to decline after the earthquake on the 13th of last month, so TEPCO should be quick. We plan to increase the amount of water injection in the 5th.
At the Fukushima Daiichi Nuclear Power Plant, water is injected to cool the melted nuclear fuel, but after the earthquake on the 13th of last month, the water level in the containment vessel of Unit 1 has continued to decline, so TEPCO has strengthened its surveillance. Was there.
At the press conference on the 4th, it was revealed that the water level, which was about 1 meter and 90 centimeters from the bottom of the containment vessel, dropped by about 70 centimeters to 1 meter.
And if it continues to fall further, it may not be possible to monitor, so we plan to increase the amount of water injection as early as 5 days.
The cause of the water level drop is that the damaged part of the containment vessel caused by the nuclear accident 10 years ago may have spread due to the shaking of the earthquake last month, and more water may be drained than before.
Cooling of the melted down nuclear fuel is continued by water injection, and there is no safety problem.
In addition, since the injected water is circulated and reused, increasing the amount of water injected does not have a significant effect on the amount of contaminated water generated.
On the other hand, at the Fukushima Daiichi Nuclear Power Plant, the water level tended to decline even at Unit 3, but at present, the water level is generally stable.