Share with friends and circle of friends by wechat scanning QR code < / P > < p > < p > Xinhua News Agency on April 21 in Beijing, the Japanese government recently decided to deal with millions of tons of < a target = "generated by the Fukushima Daiichi nuclear power plant accident_ blank" href=" https://news.163.com/news/search?keyword=%E6%A0%B8%E6%B1%A1%E6%9F%93 "> nuclear pollution < / a > water discharged into the sea. This "unprecedented" move has aroused widespread concern in the world. The Japanese authorities repeatedly claimed that the processed nuclear < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E6%B1%A1%E6%9F%93%E6%B0%B4 "> polluted water < / a > is" safe ", but the existence of many" information black holes "makes people have to question this. < / P > < p > the nuclear sewage bunker of Fukushima Daiichi nuclear power plant. People's visual information map I. what else is the nuclear polluted water after treatment_ blank" href=" https://news.163.com/news/search?keyword=%E6%94%BE%E5%B0%84%E6%80%A7%E7%89%A9%E8%B4%A8 "> radioactive material < / a >? In order to cool the meltdown core of Fukushima Daiichi nuclear power plant after the accident, Tokyo Electric Power Company (< a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E4%B8%9C%E7%94%B5 "> Dongdian < / a >) continuously injects water into the reactor core. In addition, rainwater and groundwater contact or flow through the nuclear reactor, which inevitably contains a lot of radioactive substances. More than a target of TEPCO development_ blank" href=" https://news.163.com/news/search?keyword=%E6%A0%B8%E7%B4%A0 "> nuclide < / a > treatment system (ALPS) claims to be able to filter most nuclides except tritium in nuclear polluted water. As of January this year, about 1.24 million tons of nuclear polluted water have been treated and stored by Alps. In fact, more than 60 kinds of nuclides such as cesium, strontium and tritium are still contained in the nuclear polluted water stored after one treatment. Tritium is difficult to remove from water because it is an isotope of hydrogen. The problem is that according to the scheme of TEPCO, tritium is not the only nuclide left in the nuclear polluted water discharged into the sea after secondary treatment. According to a data released by Dongdian in December last year, after secondary treatment, the nuclear polluted water still contains 12 nuclides, including iodine-129, cesium-135 and carbon-14, in addition to tritium, and most of them are nuclides with ultra long half-life. It is pointed out in the April 13 issue of science that ruthenium, cobalt, strontium, plutonium and other radioactive isotopes with longer lifetime and more dangerous will be leaked from time to time in the purification process of Alps. Therefore, Yamamoto, a representative of Japan's Liberal Democratic Party, stressed that the issue of marine discharge of nuclear polluted water should not be limited to the safety of tritium. Second, is Alps reliable? < / strong > < / P > < p > recently, the United Nations special rapporteurs on toxic substances and human rights, Marcos aureliana, the United Nations special rapporteurs on the right to food, Michael Fahri, and David Boyd, the United Nations special rapporteurs on human rights and the environment, issued a joint statement, pointing out that Alps's performance so far shows that it can not completely eliminate radioactive substances in nuclear polluted water The second treatment can not guarantee complete elimination. < p > < p > Alps is a key link in the treatment of Fukushima nuclear polluted water. It was developed by TEPCO and put into use in 2013. However, in addition to the effect of decontamination, its operation is also questionable. < / P > < p > according to the website of Japan's journal Hyundai in April, Alps has been in the stage of "trial operation" since 2013 when TEPCO operated Alps. On April 14, at the resource and energy survey meeting of Japan's Senate, Japanese Communist Party Senator yamatado pointed out that Alps had not even completed the inspection before its "official operation". In response to this query, Toji Kenda, chairman of Japan's Atomic Energy Regulatory Commission, admitted that he had omitted part of the inspection procedures before Alps operation because he was eager to deal with nuclear polluted water. In an interview with Japanese media, Kenichi Oshima, Professor of environmental economics at Nagoya University in Japan, said that the chairman of the Atomic Energy Regulatory Commission personally admitted that the formal operation inspection procedures of Alps have not been completed, which is not trivial, meaning that "neither the government nor TEPCO has the qualification to deal with (nuclear polluted water)". How long is the handling period of Fukushima nuclear accident? < / strong > < / P > < p > according to the plan formulated by TEPCO and the Japanese government, it is estimated that the waste operation of Fukushima Daiichi nuclear power plant will take 30 to 40 years. However, many experts believe that the actual time may be much longer than expected. < / P > < p > professor of Waseda University and representative of "1F (Fukushima first nuclear power plant) waste Reactor Research Association" Matsuoka Junji told Japanese media that according to TEPCO's plan, it will take 44 years for four units of Fukushima second nuclear power plant to operate in the 2011 tsunami, while three units of Fukushima first nuclear power plant have their cores melted down, so the difficulty of waste reactor is very different. < p > < p > Junichiro Matsuoka believes that the biggest difficulty in the waste reactor operation of Fukushima Daiichi nuclear power plant is to take out the melted nuclear fuel of three units. However, due to the lethal high radiation level hindering the operation of the waste reactor, the East power company does not even know the distribution of the melted nuclear fuel, and the way to take it out has not been determined. "At present, it will take more than 100 years just to take out the melted nuclear fuel." Therefore, once a precedent is set for the discharge of nuclear polluted water into the sea, the safety of marine ecology and related aquatic products in the Pacific Ocean will always be shrouded in the shadow of Japan's pollution in the long process of waste disposal in the future. What is the relationship between TEPCO and the Japanese government? < / strong > < / P > < p > transparency and credibility of information is one of the key issues in the disputes over the discharge of Fukushima nuclear polluted water into the sea. At present, the outside world, including international organizations, can only rely on the information and data provided by TEPCO, and the Japanese government's decision-making claims are also based on these information and data. < / P > < p > < p > the problem is that TEPCO has repeatedly had bad records in the safe operation of nuclear power, and has a criminal record of concealing, misreporting and tampering with information before and after the Fukushima nuclear accident, including the treatment of nuclear polluted water. For example, in August 2013, under public questioning, TEPCO admitted that about 300 tons of high concentration nuclear contaminated water leaked from the steel tank, some of which may have flowed into the Pacific Ocean. < / P > < p > before the Fukushima nuclear accident, TEPCO was a private enterprise and had a regulatory and regulated relationship with the Japanese government. After the nuclear accident, TEPCO faced huge expenses such as waste reactor and compensation. In order to avoid the bankruptcy of this power giant, the Japanese government set up the "Japan Atomic Energy damage compensation and reactor scrapping support agency". This official agency has 50.1% of the voting rights of TEPCO shares, and actually brought TEPCO under the control of the Japanese government. < / P > < p > according to the relevant laws and regulations, the task of the organization also includes widely providing information about waste dumps at home and abroad. This also means that, for the East power in nuclear accident treatment, nuclear pollutionThe Japanese government is responsible for all kinds of "information black holes" in the treatment of contaminated water
2023-03-22 10:04:32