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The second cutting of the contaminated pipe was interrupted because the device was stuck again

The cutting equipment is being lowered to remove the pipes (from TEPCO’s live camera) at the Fukushima Daiichi Nuclear Power Plant at 0:19 p.m. on June 10, 2022.

June 11, 2022
On June 10, TEPCO resumed removal work of pipes contaminated with highly radioactive materials between Units 1 and 2 at the Fukushima Daiichi Nuclear Power Plant (Okuma and Futaba, Fukushima Prefecture) for the first time in 18 days and began cutting a second pipe, but the work was interrupted by a problem. The chain-shaped cutting tool became stuck in the pipe. TEPCO was forced to review its construction methods.
 According to TEPCO, around 3:00 p.m., a large crane began cutting a 7-meter-long pipe (approximately 30 cm in diameter), and an hour later, when 90% of one side had been cut, the cutting tool became lodged in the pipe. At around 7:50 p.m., the cutting device was forcibly lifted up by a crane and removed.
 A similar problem at the end of March occurred when 90% of one side of the pipe was cut. When work resumed two months later after considering measures to prevent the pipe from biting, the piping had been cut spontaneously, so the prepared measures could not be tested on site.
 The piping, 135 meters long in total, was used for venting the steam containing high concentrations of radioactive materials that had accumulated inside the reactor to prevent the containment vessel from rupturing at the time of the accident in March 2011. Since it will be an obstacle to future construction work, it will be removed in 26 sections.
 The work began at the end of February, but after a series of troubles, the first pipe (approximately 12 meters long) was successfully cut on May 23. The cut surface of this pipe was found to have a radiation dose of 3 sievert per hour, which is high enough to kill a person if exposed to radiation for several hours, and the work procedure was reviewed. (The work procedure had to be reviewed.)
https://www.tokyo-np.co.jp/article/182880?rct=national&fbclid=IwAR3CC_FMnl5E_ZOsrclfdytCnDchF9ufc95QXfwiw5HaLqzns4ev20UBtPI

June 13, 2022 Posted by | Fuk 2022 | , , | Leave a comment

No to Fukushima discharge

South Korean environmental activists perform during a protest in Seoul against Japan’s plan to discharge Fukushima radioactive water into the sea, as they mark World Oceans Day on June 8, 2022. (Photo by Jung Yeon-je / AFP)

June 13, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Nuke contaminated water from Fukushima may be out of sight, but should never be out of one’s mind

Demonstrators hold slogans during a protest against the Japanese government’s plan to dump more than 1 million tons of nuclear contaminated water from the stricken Fukushima nuclear plant into the ocean, outside the prime minister’s office in Tokyo on April 13, 2021.

May 30, 2022

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.

https://www.globaltimes.cn/page/202205/1266932.shtml

June 5, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Fukushima citizens’ group urges TEPCO to “stop construction of facilities to discharge contaminated water into the ocean without understanding and agreement” and to Governor Uchibori, “Do not agree to the prior consent request

 May 25, 2022

On May 25th, members of the Fukushima citizens’ group “Don’t Pollute the Sea Anymore! Citizens’ Council” and other members visited the Fukushima branch office of TEPCO’s Fukushima Reconstruction Headquarters and the Fukushima Prefectural Government on the morning of May 25 to submit a written request to TEPCO. They again demanded that TEPCO “stop construction of facilities for discharging contaminated water into the ocean without understanding and agreement” and that Fukushima Prefecture “not agree to the request for prior consent. Although there is still no consent from Fukushima Prefecture and there are voices of opposition, TEPCO is steadily preparing for the oceanic discharge as “construction work that does not require permission. Upon receiving the request, TEPCO asked the interviewer to leave the room to exchange opinions, but no concrete response was given. While the voices of the people are being ignored, the time for Governor Masao Uchibori to make a decision is approaching.

The “clean sea” cannot be promised.
 The letter of request to TEPCO asks for five points.
 (1) Stop the full-scale construction of facilities for discharging contaminated water into the ocean without understanding and agreement.
 (2) Disclosure of all information, including the concentration and total amount of all radioactive nuclides to be discharged.
 (3) Establish drastic measures for contaminated water, such as groundwater sealing, as soon as possible.
 (4) Hold explanations and public hearings in Fukushima Prefecture and throughout Japan.
 (5) Cancellation of the statement made by the director of the Nuclear Energy Center and an apology.

 The group also calls on Fukushima Prefecture Governor Masao Uchibori to address the following four points.
 (1) Refrain from agreeing to prior consent for oceanic discharge without understanding and agreement.
 (2) Make the government and TEPCO disclose all information, including the concentration and total amount of all radionuclides to be released.
 (3) Demand that the government and TEPCO establish measures to prevent contaminated water, such as groundwater sealing.
 4) Demand that the government and TEPCO hold explanations and public hearings in Fukushima Prefecture and throughout Japan.

 At the Fukushima branch office of TEPCO’s Fukushima Reconstruction Headquarters, Mr. Tsuyoshi Shibano of the Fukushima Public Relations Department received the written request. Four representatives from citizens’ groups took part in the exchange of opinions, but TEPCO allowed only a “head shot” to the interviewers. TEPCO asked the reporters to leave the room, saying, “We do not allow interviews in the exchange of opinions,” “We cannot speak frankly when reporters are present,” and “We do so in other situations as well. When reporters asked for interviews, they were told that they would not begin unless they left the room. According to those present, TEPCO did not make any specific comments in response to the request.
 The request to TEPCO included “rescinding and apologizing for the statement made by the director of the Nuclear Energy Center,” a protest against the statement he made when he visited the TEPCO headquarters on June 13 to request the cancellation of the June construction start. When a mother who participated in the protest asked TEPCO to “promise to leave a clean sea for our children,” the director of the Nuclear Energy Center replied, “I can’t promise you that. This mother shouted “Don’t make fun of Fukushima” in front of the TEPCO headquarters. In her written request, she demanded a cancellation and an apology in a strong tone, saying, “This shows a corporate culture of ignoring residents without regard for responsibility for the nuclear accident. TEPCO’s response was limited to saying that they had not been able to confirm what she had said.

Mr. Shibano (left) of TEPCO’s Fukushima Public Relations Department received the letter of request at the Fukushima branch office of TEPCO’s Fukushima Reconstruction Headquarters.
At the Fukushima Prefectural Government, Shigeru Ito, Director of the Nuclear Safety Division, responded to the request.
Written request submitted to TEPCO and Fukushima Prefecture, calling for the suspension of construction of facilities for discharging contaminated water into the ocean without understanding and agreement.

The “Promise to the Fishermen’s Federation” is heavy.
 At the Fukushima Prefectural Government, Shigeru Ito, Director of the Nuclear Safety Division, responded to the four requests as follows.
 The Minister of Economy, Trade and Industry also said, “We will keep our promise. The Minister of Economy, Trade and Industry has also said that he will keep his promise, and we will make sure that he keeps his word.
 The Minister said, “We have asked TEPCO to reconsider the safety of the water, since there is a possibility that radioactive materials other than the 64 nuclides may be detected in the water. We are asking TEPCO to reconsider the safety of the water, as there is a possibility that radioactive materials other than the 64 nuclides will be detected.
 The frozen soil barrier wall has a certain degree of water interception capacity, but it has been in use for some time. We are demanding that the government and TEPCO urgently study ways to reduce the generation of contaminated water itself to near zero.
 The prefectural government will also request that the government and TEPCO provide an opportunity to explain the situation to the residents of the prefecture.
 The citizens’ group said, “The time to make demands to the government and TEPCO has passed. We will not make it in time unless we have a concrete plan. It is difficult for the prefecture to hold explanatory meetings and public hearings. We will convey our request to the national government and TEPCO.
 A woman from Minamisoma City said, “Even with ALPS treatment and dilution, the water is still ‘contaminated water. If a person is instructed by a doctor to cut back on salt, does it mean that he or she has cut back on salt if he or she adds hot water to miso soup and drinks it all? Isn’t it the same thing?
 A woman who retired from a prefectural school and is now teaching Japanese in Vietnam said, “This is not just a Fukushima problem, but a global problem. Seawater travels around the world in a few years. It is not just a rumor, but an actual damage to the world. I want everyone’s voices to be properly conveyed to the national government and TEPCO.
 A man who had worked at the nuclear power plant for many years said, “It is strange that Governor Uchibori does not oppose the discharge of water into the ocean and is doing the government’s bidding. Fukushima Prefecture is not a subcontractor of the national government. If contaminated water is discharged into the ocean, it will cause real damage. If you have money to dig undersea tunnels, increase the number of tanks.
 After the meeting, Mr. Ito, who was interviewed after the meeting, said, “The ‘request for prior consent’ submitted to the prefectural government is not an examination of the pros and cons of the ocean discharge plan, but rather a confirmation of the safety aspects of the facility plan and the radiation effects on the surrounding area, which must be discussed within the framework of the safety assurance agreement. If we can scientifically confirm that there are no safety issues, there will be fewer options for not obtaining prior consent. As for when the Nuclear Regulatory Commission will respond to the “prior consent request,” he said, “We would like to make a decision after the Nuclear Regulatory Commission approves the plan and we see what the public has to say about the plan.

TEPCO excluded reporters from the exchange of opinions with citizens’ groups. The door to the meeting room was closed.
The press conference was held at the Fukushima Prefectural Government Press Club. The number of reporters was small.
Ms. Chiyo Oda, co-chairperson of the group, appealed to the local media at the press conference, saying, “Please make sure that the voices of opposition are reported in newspapers and on TV.

The people of the prefecture have not forgiven you.
 Don’t pollute the sea any more! Chiyo Oda, co-chair of the Citizens’ Council, appealed to reporters at a press conference held at the Fukushima Prefectural Government Press Club.
 The other day at a protest in Tokyo, I was asked, “Do the people of Fukushima allow the discharge of contaminated water into the ocean?” I was asked, ‘Do the people of Fukushima allow the discharge of contaminated water into the ocean? They said, ‘We haven’t heard much opposition from the press either. I would like to ask the Fukushima press. We are really worried. We don’t want contaminated water to be discharged into the sea. Please report our voices in the newspapers and on TV. We are really worried. We want you to stop. I don’t want people to think that the people of Fukushima have forgiven us. Please help us.”
 Mr. Oda read out the written request both at TEPCO and at the Fukushima prefectural office, but his voice and hands were shaking. He was nervous, of course, but he was also trembling with anger. No matter how much he voiced his opposition, he was ignored. The construction of facilities for the offshore discharge was steadily underway, claiming that the work did not require prior approval. The local media also did not take up our voices of opposition head-on…. It was only natural that he felt the need to vent his anger at the press club.
 When I pointed this out to TEPCO, they said, ‘That’s just a lie. When I pointed this out to TEPCO, they said, ‘That’s like marking the ocean. Do they think that will reassure us? As the company that caused the nuclear accident, I don’t feel that they are taking any responsibility at all.
 It’s upsetting to be lumped together as a company that is ‘concerned about rumors. If they are so concerned about reputational rumors, they should just stop discharging their waste into the ocean, which would spread contamination.
 Kazuyoshi Sato, a member of the Iwaki City Council, also a co-chairman, said, “The government and TEPCO think that the fishermen will give up. I think that if we add some more to the so-called “reputational measures,” the All Fishermen’s Federation will give in and the Fukushima Prefectural Fishermen’s Federation will give in as well. They are disregarding the meaning of the ocean in the ecosystem, or rather, they lack imagination,” he said. He then emphasized, “The people of the prefecture have no ‘understanding’ of the situation.
 The people of Fukushima Prefecture do not ‘understand,’ and they do not want to be told that they were complicit in the discharge of contaminated water into the ocean.
 Members of the citizens’ group bowed their heads at TEPCO, in front of prefectural officials, and at the press club. Nevertheless, the plan to discharge contaminated water into the ocean is steadily moving forward under the guise that it will interfere with the decommissioning work (removal of fuel debris). The voices of the people are always ignored. But we will still speak out.
http://taminokoeshimbun.blog.fc2.com/blog-entry-652.html?fbclid=IwAR01KGHyaom1xxsBYyWQex07JY3sAziwRhLberOInkX3aG5twyry8PIAEMg

June 5, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

When removing radioactive substances from contaminated water with the Advanced Liquid Processing System (ALPS)

May 28, 2022

Via Mako Oshidori

When removing radioactive substances from contaminated water with ALPS (Multi-species Removal Device), radioactive substances are accumulated in dry slurries and suction cups. Storing that crappy high-quality contaminated waste is HIC (hic: high performance containers)

No entry for 10 days at seismic intensity 4 or more because of concerns about hydrogen occurrence (which is also a scary story. Because you can’t inspect soon enough)

And there goes a tornado warning.

June 5, 2022 Posted by | Fuk 2022 | , , | Leave a comment

Japan’s plan to release toxic water into sea irresponsible

The Fukushima Daiichi nuclear power plant, as seen in March, has been a focal point for concerns over the Japanese government’s plan to dump contaminated water into the sea.

May 28, 2022

The Tokyo Electric Power Company, according to Japanese media reports, started seabed excavations on May 5 to build a drainage outlet for the nuclear-contaminated water to flow from the Fukushima Daiichi nuclear power plant to the Pacific Ocean. The seabed operation is expected to be completed in early July, meaning Japan has taken a substantive step toward discharging the radioactive water into the sea despite strong opposition at home and abroad.

In March 2011, immediately after a tsunami triggered by a massive earthquake destroyed the Fukushima Daiichi nuclear power plant, TEPCO discharged the highly radioactive water into the sea. But under great pressure from the public, it stopped its controversial move and began building tanks to store the contaminated water.

But these storage tanks can hold only 1.37 million cubic meters of water, and are expected to be full in 2023. So the Japanese government and TEPCO announced on April 13, 2021, that the radioactive water would be “discharged into the sea”.

This plan, too, has come in for severe criticism from the Japanese people and the international community, because it would cause immense damage to the marine environment, as well as human beings, especially in neighboring countries, without benefiting the Japanese people.

The Japan Atomic Energy Regulatory Commission issued “a draft of review paper” on May 18 preliminarily agreeing to the government’s plan, but will make a final decision after one month.

However, the Japanese government said the radioactive water would be treated to meet the so-called standard for discharge. After the nuclear accident, TEPCO used a kind of “purification” equipment to treat the contaminated water to make it less harmful. It claimed that all radioactive materials will be removed from the toxic water, except for tritium.

But in 2018, on studying the contaminated water treated in 2017, a group of experts found that it contained not only tritium but also other radioactive materials such as carbon 14, cobalt 60 and strontium 90, all of which are highly harmful to living beings.

TEPCO has also said the radioactive water will be discharged after being diluted with seawater. But studies show that 1 liter of the radioactive water needs to be mixed with 254 liters of clean seawater to be properly diluted, and it would take at least 30 years for the process to be completed.

The severe consequences of the Fukushima nuclear accident have been emerging over the years. The animals in the Fukushima isolation zone have been showing visible effects of radiation, radioactive materials in fish in the nearby waters are much higher than normal levels, and the incidence of thyroid cancer in Fukushima has significantly increased.

Since the marine ecosystem is a highly integrated and delicate system, the Fukushima water will be enough to contaminate the entire Pacific and beyond.

The international scientific community has reached a consensus on the cumulative effects of radioactive materials. For instance, a Greenpeace report issued in October 2020 said that if discharged into the sea, the radioactive water could also affect human beings’ DNA. And the US National Oceanic and Atmospheric Administration and other marine authorities said that once the Fukushima water enters the sea, its radioactive materials will spread across the Pacific and other oceans, causing unprecedented damage to the marine ecology.

Ever since the Japanese government decided last year to discharge the radioactive water, countries around the Pacific Rim have been opposing it. In particular, China, the Republic of Korea, Russia and some Pacific island countries have voiced serious concerns over Japan’s decision.

Many environmentalists and scholars have also criticized Japan’s plan. In Japan alone, thousands of people, mainly belonging to NGOs, as well as the National Federation of Fisheries Associations have publicly opposed the plan.

In a public opinion survey conducted by Japanese media outlets, nearly 60 percent of the respondents said they were worried about the effects of the radioactive water on the sea and marine life. And rightly so, because even 11 years after the Fukushima nuclear accident, prices of sea food, vegetables and fruits from Fukushima Prefecture, Ibaraki Prefecture, Miyagi Prefecture and nearby places are still much lower than those from places not affected by nuclear radiation.

Besides, the investigation report of the International Atomic Energy Agency’s technical work group released on April 29 did not give a final judgment on whether discharging the nuclear-contaminated water into the sea was safe, and instead suggested a series of technical improvements to reduce its environmental impact. In fact, Japan did not allow the IAEA’s technical work group to evaluate other plans. As a result, it was not possible for the agency to find the best way to deal with the problem.

But despite the strong opposition to its plan both at home and abroad, Japan is hell-bent on discharging the toxic water into the sea, which shows that it does not give two hoots to the concerns of the international community or the Japanese people.

Actually, Japan can deal with the issue in a way that would not harm the marine environment. For example, the Japan Atomic Energy Civic Committee has said that storing the radioactive water in large storage tanks installed on land or “solidification treatment with mortar” are safer ways to deal with the toxic water.

As a signatory to the United Nations Convention on the Law of the Sea, Japan knows that discharging the contaminated water into the sea will have cross-border effects. But without exhausting all safe disposal means, disclosing all relevant information, and consulting with all the stakeholders including neighboring countries, Japan has decided to go ahead with its plan in order to fulfill its selfish economic and political interests, and save costs.

Japan’s decision is a serious threat to marine life as well as human beings, and a gross violation of international rules. Therefore, Japan should change its decision, conduct a serious study on safe operational plans to deal with the contaminated water, and act like a responsible country.

http://global.chinadaily.com.cn/a/202205/28/WS62918561a310fd2b29e5f85a.html

May 29, 2022 Posted by | Fuk 2022 | , , , | 1 Comment

Fukushima reactor sitting on shaky base raises quake concerns

The exposed metal framework of the base supporting the pressure vessel at the No. 1 reactor of the Fukushima No. 1 nuclear power plant (Provided by IRID and Hitachi-GE Nuclear Energy Ltd.)

May 28, 2022

Alarm bells are sounding over signs the heavily damaged structure of the Fukushima No. 1 nuclear power plant may be too flimsy to withstand another major earthquake.

Photos taken by a remote-controlled robotic device sent into the No. 1 reactor found that a large portion of the concrete base supporting the pressure vessel appears to have melted, leaving only a metal framework holding up the pressure vessel.

Experts are now saying the remaining structure may not be strong enough to withstand a big earthquake, a troubling prediction given that the region has been hit by a number of strong temblors in recent months.

An official with the Agency for Natural Resources and Energy who is handling decommissioning work said at a May 26 news conference the remaining structure could not be described as safe, noting that a large portion of the concrete base only had the metal framework remaining.

At a news conference the previous day, Toyoshi Fuketa, chairman of the Nuclear Regulation Authority, said, “We remain concerned about whether it will withstand a strong quake.”

The Fukushima plant went into triple meltdown after the magnitude-9.0 Great East Japan Earthquake in 2011 that generated devastating tsunami. 

The No. 1 reactor bore the brunt of the damage at the nuclear complex. Photos taken by the remote-controlled robot showed not only the exposed metal framework but what looked like a pile of melted fuel on top of the framework.

Officials believe the meltdown at the No. 1 reactor caused most of the fuel to melt through the bottom of the pressure vessel. The plant’s operator, Tokyo Electric Power Co., suspects the tremendous heat from the nuclear fuel may have melted the concrete of the base supporting the pressure vessel.

The cylindrical base is 1.2 meters thick with a diameter of about 6 meters. It supports the pressure vessel, which weighs about 440 tons.

A fiscal 2016 estimate by the International Research Institute for Nuclear Decommissioning said that the seismic resistance of the structure would not be an issue even if one-quarter of the base was structurally compromised, along with other damage to the interior of the pressure vessel.

But the latest photos captured only about 25 percent of the base, prompting the agency official to speculate the concrete around the entire base had melted.

TEPCO officials plan to send in another robot to take photos of the interior of the base to better grasp the seismic resistance of the structure.

Fumiya Tanabe, a former senior researcher at what is now the Japan Atomic Energy Agency, offered an even scarier possibility.

Noting that the interior of the base lies directly under the reactor core there, he said it was possible that piping hot nuclear fuel flowed into the interior.

“The metal framework in the interior of the base may even have melted,” Tanabe said.

That is a particularly worrisome thought in light of the fact that quakes with a seismic intensity of upper 6 on Japan’s maximum scale of 7 hit off the coast of Fukushima Prefecture in February 2021 and March 2022.

Tanabe said that in a worst-case scenario, another strong quake could cause the pressure vessel to topple over, making work to remove the melted fuel that much more difficult.

He recommended that work start quickly to assess the extent of damage.

The No. 1 reactor at the Fukushima No. 1 nuclear power plant (Asahi Shimbun file photo)

https://www.asahi.com/ajw/articles/14632301

May 29, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Fukushima Daiichi Nuclear Power Plant, work to remove contaminated pipes suspended again due to detection of high radiation dose at level of “death by exposure for several hours

A high radiation dose of 3 sievert per hour was detected inside the cut surface at the left end of a 12-meter pipe that was cut by equipment at the Fukushima Daiichi Nuclear Power Plant on May 23.

May 27, 2022
 The removal work of pipes contaminated with high levels of radioactive materials between Fukushima Daiichi Nuclear Power Plant Units 1 and 2, which had been resumed by Tokyo Electric Power Co. for the first time in two months, was suspended again after extremely high radiation levels of 3 sieverts (3000 millisieverts) per hour were detected in the first cut pipe on May 23. The second disconnection scheduled for the 26th was cancelled. TEPCO will take time to reconsider the cutting method and measures to control workers’ exposure.
 The radiation dose of 3 sievert per hour is high enough to cause death if a person is exposed to radiation for several hours. According to TEPCO, workers who measured the dose inside the cut surface of the pipes were exposed to a maximum of 0.41 millisieverts, which did not exceed the exposure limit that had been planned in advance.
 Before cutting, the 30-centimeter-diameter pipe was covered with urethane to prevent radioactive materials from leaking out of the pipe when it was cut. However, the cut surface with the high radiation dose did not have a lid, and the inside of the other cut surface, which had a lid, was 120 millisieverts per hour.
 The pipes were used for venting highly contaminated steam from the reactor to prevent the containment vessel from rupturing at the beginning of the accident in March 2011. Akira Ono, chief executive officer of the Fukushima Daiichi Decommissioning Promotion Company, said at a press conference on March 26, “The high concentration is thought to be caused by the venting. We need to work carefully and consider our procedures.
 The removal of piping using remote-controlled equipment began at the end of February, but was suspended for about two months due to a series of troubles that forced a review. The plan was to cut and remove a total of 135 meters of piping in 26 installments, and the first installment was finally completed on the 23rd of this month. (The first round finally succeeded on the 23rd of this month.)
https://www.tokyo-np.co.jp/article/180011?fbclid=IwAR2XsD9rjbecMFSYfUWU8knhoQKVjtibdDHl4InGGWLwRm5DKbpypkwhRaw

May 29, 2022 Posted by | Fuk 2022 | , , | Leave a comment

Debris in sediment, bottom of Fukushima Unit 1 Neutron radiation detected at high levels

Debris deposits at the bottom of the containment vessel of the Fukushima Daiichi Unit 1 reactor on March 17 (International Nuclear Decommissioning Research and Development Organization, Hitachi GE Nuclear Energy, Inc. (Courtesy of International Nuclear Decommissioning Research and Development Institute, Hitachi GE Nuclear Energy)

May 26, 2022
On May 26, TEPCO announced that it had detected high levels of neutron radiation, which is emitted when uranium and plutonium contained in nuclear fuel undergo nuclear fission, in sediment found at the bottom of the containment vessel at the Fukushima Daiichi Nuclear Power Plant’s Unit 1 reactor. TEPCO announced that it had detected high levels of neutron radiation, which is emitted when uranium and plutonium contained in nuclear fuel fuse. A TEPCO representative said, “It is presumed to be derived from molten nuclear fuel (debris). It is natural to assume that the debris is contained in the sediment.
 TEPCO will focus on examining the thickness of the deposits near where the neutron rays were detected and the types of radioactive materials contained in the deposits.
 According to TEPCO, on March 20 and 21, underwater robots were used to survey four locations at the bottom of the containment vessel, and neutron rays were detected in all of them. The values at three locations near the openings in the base of the pressure vessel were particularly high.
https://www.tokyo-np.co.jp/article/179742?fbclid=IwAR0oljxEJF2Q5XzUE859cfr1DfSmtvct8xkg6FcU2uIEpIKvtlrh3qm9aag

May 29, 2022 Posted by | Fuk 2022 | , , , , , , | Leave a comment

If a major earthquake were to occur… “Will it be safe?” concerns the chairman of the regulatory committee after the damage to the foundation of the pressure vessel at the Fukushima Daiichi Unit 1 reactor is discovered

The foundation supporting the pressure vessel has lost its concrete, leaving the rebar exposed inside the reactor of TEPCO’s Fukushima Daiichi Nuclear Power Plant Unit 1 (courtesy of the International Nuclear Decommissioning Research and Development Organization and Hitachi GE Nuclear Energy).

May 25, 2022
At a press conference on May 25, Chairman Toyoshi Sarada of the Nuclear Regulation Authority of Japan (NRAJ) said, in response to an investigation that found rebar exposed in part of the reinforced concrete foundation supporting the Unit 1 reactor pressure vessel at TEPCO’s Fukushima Daiichi Nuclear Power Plant (Okuma and Futaba, Fukushima Prefecture), “I have concerns about whether it will be safe when a major earthquake occurs. I have concerns about whether it will be safe in the event of a major earthquake. If we could reinforce it, we would.
 Sarada pointed out that “it is possible to speculate” about the possibility that nuclear fuel (debris) melted down during the accidental meltdown (core meltdown) and broke through the pressure vessel, melting the concrete (1.2 meters thick) of the foundation. He expressed a sense of crisis, saying, “It is necessary to consider what would happen if the foundation collapsed.
 He also recognized that it would be difficult to reinforce the foundation in a nuclear reactor with extremely high radiation levels, and said, “We cannot take too long when considering earthquake resistance, and we should remove the debris as soon as possible, even if it is just an earpick, and analyze its condition.
 TEPCO placed an underwater robot into the containment vessel from March 17 to 21 to investigate its interior. Near the base of the bottom of the containment vessel, several lumpy deposits were found that appeared to be debris. Although the accident caused the meltdown of Units 1-3, this was the first time that the exposure of rebar inside the concrete was confirmed. (Kenta Onozawa)
https://www.tokyo-np.co.jp/article/179502?fbclid=IwAR1Oq1_rEddpUnUyTDUjJXd494WNQk3_XfAyPMVz3zFFWVqZGcsV3X10qSY

May 29, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Rebar of the foundation supporting the pressure vessel is exposed, debris may have melted the concrete

The foundation supporting the pressure vessel has lost its concrete and the rebar is exposed inside the reactor of TEPCO’s Fukushima Daiichi Nuclear Power Plant Unit 1 (courtesy of the International Nuclear Decommissioning Research and Development Organization and Hitachi GE Nuclear Energy).

May 23, 2022
 On May 23, TEPCO released new images taken by an underwater robot of the bottom of the containment vessel of the Unit 1 reactor at the Fukushima Daiichi Nuclear Power Plant (Okuma and Futaba, Fukushima Prefecture). It was confirmed that rebar was exposed in a part of the 1.2 meter thick reinforced concrete base (1.2 meters thick) that supports the pressure vessel where the nuclear fuel was located. There is a strong possibility that the concrete melted due to the heat from the nuclear fuel (debris) that melted down from the pressure vessel during the accident.

According to TEPCO, several lumpy deposits were observed near the opening from the bottom of the containment vessel to just below the pressure vessel. The closer to the opening, the thicker the deposits were, and the rebar of the foundation was exposed. Concrete is said to melt when heated to over 1,100 degrees Celsius, and if the foundation is severely damaged, in the worst case, the pressure vessel may fall because it can no longer support itself.

A spokesperson for TEPCO told a press conference about the reason the rebar was exposed, “One possibility is that the temperature was too severe, but we don’t know the mechanism. We would like to evaluate the damage after confirming the data in future investigations.

Multiple lumpy deposits were observed at the bottom of the Unit 1 containment vessel at TEPCO’s Fukushima Daiichi Nuclear Power Plant (courtesy of the International Nuclear Decommissioning Research and Development Organization and Hitachi GE Nuclear Energy).

 The survey was conducted from the 17th to the 21st. The “neutron flux measurement,” which captures the characteristics of radiation, is being used to determine if the deposits are debris, and if so, they are being analyzed. Another four types of robots will be deployed in the future to determine the distribution of the sediments.
(Shinichi Ogawa and Kenta Onozawa)
https://www.tokyo-np.co.jp/article/179098?fbclid=IwAR1yHmGOTQLnZgk5vk06xyo7PaHPM9vVQ_myj6xFV5svs2eGkGdADumaRRU

May 29, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Fukushima Daiichi Nuclear Power Plant contaminated water, after all… “Protect our oceans!

May 21, 2022

Environmental Groups Perform Against Ocean Discharge of “Contaminated Water from Fukushima Daiichi Nuclear Power Plant 
Japan’s Nuclear Regulatory Commission Virtually Approves Ocean Discharge of Contaminated Water

Members of an environmental citizens’ group perform in front of the Japanese Embassy in Jongno-gu, Seoul, on the morning of March 20 in opposition to the ocean discharge of radioactive water from the Fukushima Daiichi Nuclear Power Plant.

 
Members of environmental citizen groups, including the Korean Citizens’ Center for Environmental Health and the Sea Committee of the Environmental Movement Coalition, held an emergency press conference in front of the Japanese Embassy in Jongno-gu, Seoul, on the morning of March 20, and made their opposition to the oceanic discharge of radioactive water from the Fukushima Daiichi nuclear power plant clear.

Members of environmental citizen groups shout slogans against the oceanic discharge of radioactive water from the Fukushima Daiichi Nuclear Power Plant in front of the Japanese Embassy in Jongno-gu, Seoul, on the morning of March 20.

Japan’s Nuclear Regulation Authority effectively approved Tokyo Electric Power Co.’s plan to mix radioactive water from the Fukushima Daiichi nuclear power plant with seawater and discharge it into the ocean starting next spring on March 18. TEPCO plans to treat the contaminated water with a multinuclide removal system (ALPS) and then dilute it with seawater to lower the tritium (triple hydrogen) concentration before discharging it into the sea. Once the approval process is complete, TEPCO plans to obtain the consent of the local authorities in charge and begin construction of facilities for the discharge in earnest. We collected photos of the site.

Japan’s Nuclear Regulation Authority effectively approved TEPCO’s plan to mix radioactive water from the Fukushima Daiichi Nuclear Power Plant with seawater and discharge it into the sea starting next spring on March 18.

Members of an environmental citizens’ group perform in front of the Japanese Embassy in Jongno-gu, Seoul, on the morning of March 20 in opposition to the discharge of radioactive water from the Fukushima Daiichi Nuclear Power Plant into the sea.

Jung Hyo Kim, Reporter (Inquiries: japan@hani.co.kr)
http://japan.hani.co.kr/arti/politics/43525.html?fbclid=IwAR23_nH_28-qvQTVP4UdvLlVro5H-m9EKbIJwhVYCoTWLH4cdRVAc_V9WyU

May 22, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

S. Korea denies report of alleged approval of Japan’s Fukushima water release plan

May 20, 2022

SEOUL, May 20 (Yonhap) — South Korea on Friday denied a Japanese media report claiming the Seoul government agreed to Tokyo’s plan to release radioactive water into the ocean from the crippled Fukushima nuclear power plant.

Earlier this week, a Japanese news agency reported that the new Yoon Suk-yeol government appears to be planning to have consultations with Japan on the premise that Tokyo will discharge contaminated water as planned, while the former Moon Jae-in government objected to the plan.

“Our government has never gone for Japan’s Fukushima water release plan. We are concerned about some arbitrary and subjective media reports,” Seoul’s foreign ministry said in a text message sent to reporters.

The ministry vowed utmost efforts to come up with “needed responses to have the contaminated water be disposed in a way that meets international laws and standards and in a safe manner from objective and scientific perspectives,” while continuing consultations with Japan.

In April 2021, Japan announced a plan to start discharging the radioactive water into the sea in 2023 in what is expected to be a decadeslong process, as all storage tanks at the Fukushima plant are expected to be full as early as fall of 2022.

Earlier this week, Japan’s Nuclear Regulation Authority gave initial approval for Tokyo Electric Power’s discharge plan, with final approval likely to come following a 30-day public comment period.

Protestors from civic groups stage a protest rally in front of the Japanese Embassy in Seoul on May 20, 2022, to voice their objection to Japan’s decision to discharge water into the sea containing radioactive materials stored at the Fukushima nuclear power plant. (Yonhap)

https://en.yna.co.kr/view/AEN20220520010800320?section=national/national

May 22, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Korea to keep close tabs on Japan’s Fukushima water discharge plan

Civic activists hold a rally in Seoul to oppose Japan’s planned release of radioactive water from the crippled Fukushima plant into the ocean, April 20. According to the foreign ministry, Korea will step up communication with Japan and the U.N. nuclear watchdog over Tokyo’s planned release of the radioactive water.

May 22, 2022

Korea will step up communication with Japan and the U.N. nuclear watchdog to address health and security concerns over Tokyo’s planned release of radioactive water from the crippled Fukushima nuclear power plant into the ocean, the foreign ministry said Thursday.

Japan’s Nuclear Regulation Authority gave initial approval Wednesday for Tokyo Electric Power’s plan to discharge water from the plant starting around early 2023. Final approval is planned following a 30-day public comment period.

The foreign ministry said it remains committed to its efforts to ensure Japan safely releases the contaminated water from the plant in line with “international laws and standards” based on “objective and scientific perspective.”

The International Atomic Energy Agency (IAEA) is tasked with conducting safety reviews on the planned water release.

“The government will continue to strengthen communication between Korea and Japan, as well as with the international community including the IAEA, by prioritizing public health and security in relation to the (Fukushima) contaminated water,” ministry spokesperson Choi Young-sam told a press briefing.

In April 2021, Japan announced a plan to start discharging the radioactive water in 2023 in what is expected to be a decades-long process, as all storage tanks at the Fukushima plant are expected to be full as early as the fall of this year. (Yonhap)

http://m.koreatimes.co.kr/pages/article.asp?newsIdx=329479

May 22, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Japan’s nuclear water disposal plan irresponsible

This picture taken on March 5, 2022 shows storage tanks for treated contaminated water at the Tokyo Electric Power Company (TEPCO) Fukushima Dai-ichi nuclear power plant in Okuma, Fukushima prefecture

May 20, 2022

Japan’s Nuclear Regulatory Authority granted initial approval on Wednesday for the Tokyo Electric Power Company’s plan to pipe contaminated water from the Fukushima nuclear power station into the ocean.

The water was used to cool damaged reactors after tsunami waves crashed into the nuclear power plant at Fukushima, knocking out its backup electricity supply and triggering meltdowns in three of its reactors, following an earthquake in 2011.

The decision shows the Japanese government and the Japanese company stand together in diverting this problem toward humankind. And the Japanese people are among the first who will suffer because of this disastrous plan. Local reports show many Japanese residents have already expressed strong opposition to the plan.

Satoshi Nozaki, head of the Fukushima Federation of Fisheries Cooperatives Associations, said the plan will spell the death knell of the local fisheries industry. Already, importers from the world over have rejected agricultural and fishery products from Fukushima.

A Fukushima resident surnamed Uno expressed her anger against the decision saying this is something that will affect generations to come.

Japan’s immediate neighbors, residents of China and the Republic of Korea, will face no less harm from the radioactive discharge. Chinese and ROK fishermen might have to abandon fishing in the region.

On hearing that they would be served fish from Fukushima, athletes from the ROK had brought their own food with them to the 2020 Tokyo Olympics.

All seas being interconnected, neither North America nor Europe can escape the fate if Japan discharges the contaminated water into the ocean; a CCTV report had said the nuclear waste water from Fukushima would reach North America within 57 days.

The Tokyo Electric Power Company started manufacturing pipes for discharging the water in April and the discharge is scheduled to begin nearly next year. The world should stop Japan from carrying out this disastrous plan.

http://global.chinadaily.com.cn/a/202205/20/WS6286df99a310fd2b29e5dddb.html

May 22, 2022 Posted by | Fuk 2022 | , , , , | Leave a comment