By Zhou Dingxing

In 2011, the “3/11” earthquake in Japan caused the meltdown of the Fukushima Daiichi Nuclear Power Plant reactor core, unleashing enormous amounts of radioactive material. The operator of the plant, Tokyo Electric Power Company (TEPCO), decided to pour in seawater to cool the reactor and contain the leakage. And because the used seawater became highly contaminated with radioactive material, TEPCO had to put it in storage tanks. A decade on, the nuclear contaminated water generated by the Fukushima Daiichi Nuclear Power Plant are about 150 tons per day in 2021, and will reach the upper limit of the storage tank capacity of 1.37 million tons in the spring of 2023.

According to estimates by the Japan Center for Economic Research, it will cost 50-70 trillion yen (about $400-550 billion) to scrap and decontaminate the reactor, the bulk of which goes to the treatment of contaminated water. So in April 2021, the Japanese government announced that the problem of increasing amounts of nuclear contaminated wastewater would be addressed by dumping it into the sea. On May 18, 2022, the Japan Atomic Energy Regulatory Commission granted initial approval for TEPCO’s ocean dumping plan.

After the Fukushima nuclear accident, the Japanese government set up the “Nuclear Damage Compensation and Decommissioning Facilitation Corporation” (NDF), which is an official agency with 50.1 percent of TEPCO’s voting rights, in order to prevent TEPCO from going bankrupt. In other words, TEPCO is now under direct jurisdiction and control of the Japanese government. It is not hard to see that both TEPCO and the Japanese government are the masterminds behind the nuclear contaminated water dumping plan, because for them, this is the most expedient, cost-effective and trouble-saving way. Japan would need to spend only 3.4 billion yen (about $27 million) according to this plan. But the threat to nature, the environment and human life as a result of such reckless actions was probably never on their minds.

Nuclear contaminated water is not nuclear treated water

Monitoring data collected in 2012 showed that the concentration of Cesium in the waters near Fukushima was 100,000 becquerels per cubic meter, which is 100 times higher than what was detected in the Black Sea after the Chernobyl nuclear leak. Ten years later in 2021, 500 becquerels of radioactive elements per kilogram of weight could still be detected in the flat scorpionfish caught by Japanese fishermen off the coast of Fukushima Prefecture, or five times higher than Japan’s own standards. In the 11 years since the nuclear disaster, one or two thyroid cancer cases have been reported for every 60,000 children in Fukushima Prefecture, much higher than the normal rate.

The Japanese government and TEPCO have repeatedly claimed that nuclear contaminated water is “safe” to be dumped into the ocean because it would go through the multi-nuclide removal system (Advanced Liquid Processing System, ALPS). But it is only the radioactive substance called “Tritium” that has reached this standard. And what Japan doesn’t say is that, even after treatment, the water still contains other radioactive substances such as Strontium 90 and Carbon 14 that cause genetic mutation in the ecosystem. Since the release of the ALPS-related report, the Japanese government has not held any briefings or hearings for the public. And in order to justify the dumping plan, the Japanese government contacted citizen and groups to ask them to stop using the words “nuclear contaminated water”, and use “nuclear treated water” instead. Vigorous public relations (PR) efforts have also been carried out to whitewash the plan. In the 2021 budget of the Japanese Reconstruction Agency, PR expenses related to the Fukushima nuclear accident have increased to 2 billion yen (around $16 million), over four times than the previous year figure. The money has been used on professional teams to weaken and remove negative public opinion in Japan and abroad about the nuclear contaminated water through various propaganda programs.

Furthermore, TEPCO’s track records for handling the nuclear accident have been filled with deception and distortion. In 2007, TEPCO admitted that it had tampered with data and concealed potential safety hazards in a total of 199 regular inspections of 13 reactors in its nuclear power plants since 1977, including the cooling system failure in the Fukushima nuclear accident. One week after the 2011 nuclear accident when experts had already made the judgment that the cores of Units 1 to 3 of the Fukushima Daiichi Nuclear Power Plant had melted, the company still refused to announce the truth to the public, and instead chose to use “core damage,” a term that was significantly less alarming. With a past so bad it is hard to make one believe that TEPCO will dump “safe” nuclear contaminated water into the sea.

Waves of opposition at home and abroad

The Japanese government has so far failed to provide sufficient and credible explanations on the legitimacy of the nuclear contaminated water dumping plan, the reliability of nuclear contaminated water data, the effectiveness of the purification devices, and the uncertainty of the environmental impact. To promote the plan under such circumstances has only brought about wide criticism and questions by various communities in Japan and beyond.

Up to 70 percent of the people in Fukushima Prefecture have expressed opposition to the dumping plan. Konno Toshio, former president of Fukushima University, was opposed to advancing the ocean dumping plan without prior understanding at home and abroad, because this plan could affect future generations and must be treated with great caution. The fishery cooperatives and local councils in Miyagi Prefecture, which is adjacent to Fukushima Prefecture, believe that the dumping of nuclear contaminated water into the ocean may affect the safety of local aquatic products and cause significant economic losses to related industries. Already, 180,000 people in Japan have signed the petition to the Japanese government to adopt disposal options other than ocean dumping.

Vladimir Kuznetsov, academician at the Russian Academy of Natural Sciences, said that radioactive substances in the nuclear contaminated water can only be partially filtered, and the treated water still contains extremely dangerous radionuclides, which will pollute marine life and spread to the entire ocean through fish migration. This will gravely harm the global marine environment and cause serious harm to the health of people in the periphery. According to a research model established by GEOMAR Helmholtz Centre for Ocean Research Kiel, half of the Pacific Ocean will be polluted in less than 57 days if nuclear contaminated water is dumped at the speed announced by Japan.

Voices of justice

Japan’s ocean dumping plan of nuclear contaminated water is a serious threat to the marine environment, and it damages marine interests of the neighbors and other littoral countries. It also violates multiple international conventions such as the United Nations Convention on the Law of the Sea, the Convention on Assistance in Nuclear Accidents or Radiation Emergencies, and the Convention on Nuclear Safety as well as principles of the international law. Many countries, including China, have expressed concern over or opposition to it.

The Russian Foreign Ministry issued a statement criticizing the Japanese government for not consulting with or providing any related information to its neighbors when the decision was made, and expressing grave concern over Japan’s dumping of nuclear polluted water into the ocean. The South Korean Foreign Ministry summoned the Japanese ambassador to Seoul to make a serious protest against Japan’s unilateral decision while large crowds gathered in front of the Japanese embassy to protest. The International Atomic Energy Agency (IAEA) has launched an assessment of Japan’s plan.

The spokesperson of the Chinese Ministry of Foreign Affairs has repeatedly pointed out that Japan’s dumping of nuclear contaminated water into the ocean is extremely irresponsible, and demanded that Japan fully consult with neighboring countries, other stakeholders, and relevant international institutions to find a proper way to dispose of the nuclear contaminated water, before which the dumping into the ocean shall not be initiated.

The ocean is a treasure for all mankind and our home for survival. It is essential for sustainable development and our future. To dump nuclear contaminated water from Fukushima into the ocean is a major issue that bears on the environment for human survival and health, it is not just Japan’s internal affairs. Although keenly aware of the grave harm to the global marine environment caused by the dumping of such water into the sea, Japan has attempted to push through the plan without exhausting all other safe methods. Such an opaque and irresponsible approach is unacceptable, let alone trusted by countries in the region and the larger international community.

The author is a scholar on international studies