NRA will watch for changes in the values of monitoring posts that measure domestic radiation doses at nuclear power plants in southern China, allegedly releasing gaseous radioactive material in accordance with regulatory regulations. At the same time, we are collecting information.
So far, there are no significant fluctuations in dose values.
Regarding the Taishan nuclear power plant in Guangdong Province, southern China, a major electric power company, which is the parent company of a French company that builds and maintains a nuclear power plant, said that the Chinese company in charge of operation will use gaseous radioactive substances in accordance with the regulations of the authorities. Although it was released to the outside, it is within the standard range and is not an accident.
Regarding this, the Nuclear Regulatory Agency is closely watching whether there is any change in the values of the monitoring posts that measure radiation doses installed in Okinawa Prefecture and other parts of the country.
So far, there is no significant change in the value of the monitoring post.
Also, when I asked for information by e-mail from China's National Nuclear Safety Bureau around noon on the 15th, an e-mail with the content "Create and reply to the answer" was returned in the evening.
The Regulatory Agency will continue to collect information in collaboration with the Ministry of Foreign Affairs and others.
Expert "Is there a low risk that the impact on Japan will increase?"
Professor Akio Yamamoto of Nagoya University, who specializes in nuclear engineering, said that he often did not know in detail about the situation of troubles and the amount of radioactive materials released, so he said, "Nuclear fuel is made of metal called cladding tube. It is covered with a long and narrow pipe, but if the pipe is punctured or damaged, gaseous radioactive material will come out. This gas will flow into the water that is the cooling material and will generally be stored in the tank. It will be released to the outside after being attenuated, but it is thought that the amount released will change depending on the degree of damage, etc. Even at nuclear power plants in Japan, problems such as small holes in the cladding tube may occur. However, it is not clear how much the trouble was this time. It is unlikely that the impact on Japan will be large, but we need to keep an eye on it. "