In March of last year, an earthquake with a maximum seismic intensity of upper 6 in Fukushima Prefecture caused a series of troubles at the Tokyo Electric Power Company's Fukushima Daiichi Nuclear Power Plant, such as leakage of groundwater, which has a relatively low concentration of radioactive substances, from tanks.
TEPCO released the status of countermeasures to the press on the 14th, one year after the earthquake.
On March 16 last year, an earthquake with a maximum seismic intensity of upper 6 occurred in Fukushima Prefecture, and both Okuma Town and Futaba Town, where the Fukushima Daiichi Nuclear Power Plant is located, recorded a seismic intensity of lower 6.
In the earthquake, at the Fukushima Daiichi Nuclear Power Plant, water leaked from the joints of tanks storing groundwater with a relatively low concentration of radioactive materials that flowed into the buildings of Units 5 and 6, and containers storing radioactive waste collapsed. There was a series of troubles, such as falling over and part of the waste falling outside.
TEPCO released the status of countermeasures to the media on the 14th, shortly before the one year anniversary of the earthquake.
Of these, the tank was replaced from a type in which iron plates were joined with bolts to a seamless "welded type".
In addition, the containers were stacked up to 4 tiers at the maximum, but in places near the aisle, we reviewed the correspondence so that it would be up to 3 tiers.
In Fukushima Prefecture, there was an earthquake with a seismic intensity of upper 6 two years ago, and Kenichi Takahara, a risk communicator at Tokyo Electric Power Company, said, "We have new knowledge obtained from the big earthquake last year, so we will take measures based on this. I want to take it," he said.