A marine fish called "Koh's Flat Carp" caught off the coast of Fukushima Prefecture, Japan, has recently detected serious radiation exceeding the standard again. On the 8th, the Japanese government once again instructed Fukushima Prefecture to suspend the sale of this marine fish.
A marine fish off the coast of Fukushima Prefecture, Japan, was also detected to have seriously exceeded the radiation standard.
According to the news released by the Japanese Ministry of Health, Labor and Welfare on the 8th, as of the 7th, the test results showed that the radioactive cesium activity contained in the "Koh's Flat Carp" captured off the coast of Fukushima Prefecture reached 1400 Becquerel per kilogram, far exceeding the Japanese food hygiene standard of 100 Becquerel per kilogram.
In fact, the "Koshi Flat Carp" caught off the coast of Fukushima Prefecture exceeded the radioactive material standard in February and April last year, and was once suspended from marketing. But last December, the restrictions on the suspension were lifted.
According to Japanese media reports, after the accident at the Fukushima Daiichi Nuclear Power Plant of Tokyo Electric Power Company, the Japanese government suspended the sale of 44 kinds of seafood in the waters near Fukushima Prefecture, but these restrictions have been lifted successively.
The 2011 "3.11" earthquake caused the Fukushima Daiichi nuclear power plant core to melt down, radioactive materials leaked out, the operation of continuous cooling of the core, and the flow of rainwater and groundwater into the reactor facility produced a large amount of nuclear sewage, which is increasing.
Last April, the Japanese government decided to filter and dilute million tons of nuclear wastewater from the Fukushima Daiichi nuclear power plant into the sea, despite strong opposition at home and abroad.
Nearly 11 years have passed since the Fukushima nuclear accident, and yesterday Tokyo Electric Power Company restarted an internal investigation into Unit 1 of the Daiichi nuclear power plant, but the scrapping of the entire nuclear power plant is still far away.
Near Tokyo's Shimbashi Station, the building next to the reporter is the headquarters building of the Tokyo Electric Power Company. Yesterday, TEPCO reopened the investigation of nuclear residues inside the containment vessel of the Unit One reactor. Due to the very high amount of radiation inside the containment case, the investigation was carried out by remotely manipulating the robot.
The investigation, which was scheduled to take place last month as a preliminary preparation for the decommissioning of nuclear power plants, was halted after only two hours of technical failure. The entire investigation after the restart is expected to last about 7 months.
In the Fukushima nuclear accident, the reactor core melted down in units 1 to 3 of the Daiichi nuclear power plant, and a large amount of nuclear residue was formed, which became the biggest obstacle to scrapping. More than a week ago, the robotic arm used to remove nuclear debris finally arrived in Fukushima and will not be operational until the earliest. Although TEPCO said it would complete the scrapping work within 40 years of the nuclear accident, Japanese media questioned that the process could be longer and the prospects were uncertain.
Another legacy issue of the Fukushima accident, the treatment of nuclearly contaminated water, is even more controversial. In the face of doubts and opposition at home and abroad about the plan to discharge nuclear contaminated water from the sea, TEPCO has continuously increased its publicity efforts and issued a brochure claiming that the discharge into the sea has minimal human and environmental impacts. On the 14th of this month, the International Atomic Energy Agency will send a team of experts to Japan and conduct an investigation on Fukushima to verify the safety of the sea drainage plan.
The third legacy of the Fukushima nuclear accident is the large number of local residents who have left their homes, a number that still exceeds 27,000. Although the Japanese government will continue to lift residency restrictions in parts of the area around the nuclear accident this spring, a survey showed that only about 10% of the people who are willing to return to their hometowns to live in Fukushima have taken refuge.
Source: Popular Science China
Editor: Yu Luoyin