Research into radiocesium in forests after the Fukushima disaster: Concerns and some hope
Dynamics of radiocesium in forests after the Fukushima disaster: Concerns and some hope
Scientists compile available data and analyses on the flow of radionuclides to gain a more holistic understanding, FORESTRY AND FOREST PRODUCTS RESEARCH INSTITUTE, 5 Feb 21, HTTPS://WWW.EUREKALERT.ORG/PUB_RELEASES/2021-02/FAFP-DOR020221.PHP
Research News After the Chernobyl disaster of 1986, the 2011 Fukushima Daiichi nuclear power plant (FDNPP) disaster was the second worst nuclear incident in history. Its consequences were tremendous for the Japanese people and now, almost a decade later, they can still be felt both there and in the rest of the world. One of the main consequences of the event is the release of large amounts of cesium-137 (137Cs)–a radioactive “isotope” of cesium–into the atmosphere, which spread farther away from the power plant through wind and rainfall.
Considering the massive threat posed by 137Cs to the health of both humans and ecosystems, it is essential to understand how it has distributed and how much of it still lingers. This is why the International Atomic Energy Agency (IAEA) has recently published a technical document on this specific issue. The fifth chapter of this “Technical Document (TECDOC),” titled “Forest ecosystems,” contains an extensive review and analysis of existing data on 137Cs levels in Fukushima prefecture’s forests following the FDNPP disaster.
The chapter is based on an extensive study led by Assoc. Prof. Shoji Hashimoto from the Forestry and Forestry Products Research Institute, Japan, alongside Dr. Hiroaki Kato from the University of Tsukuba, Japan, Kazuya Nishina from the National Institute of Environmental Studies, Japan, Keiko Tagami from the National Institutes for Quantum and Radiological Science and Technology, Japan, George Shaw from the University of Nottingham, UK, and Yves Thiry from the National Agency for Radioactive Waste Management (ANDRA), France, and several other experts in Japan and Europe.
The main objective of the researchers was to gain a better understanding of the dynamics of 137Cs flow in forests. The process is far from straightforward, as there are multiple elements and variables to consider. First, a portion of 137Cs-containing rainfall is intercepted by trees, some of which is absorbed, and the rest eventually washes down onto the forest floor. There, a fraction of the radiocesium absorbs into forest litter and the remainder flows into the various soil and mineral layers below. Finally, trees, other plants, and mushrooms incorporate 137Cs through their roots and mycelia, respectively, ultimately making it both into edible products harvested from Fukushima and wild animals.
Considering the complexity of 137Cs flux dynamics, a huge number of field surveys and gatherings of varied data had to be conducted, as well as subsequent theoretical and statistical analyses. Fortunately, the response from the government and academia was considerably faster and more thorough after the FDNPP disaster than in the Chernobyl disaster, as Hashimoto explains: “After the Chernobyl accidents, studies were very limited due to the scarce information provided by the Soviet Union. In contrast, the timely studies in Fukushima have allowed us to capture the early phases of 137Cs flow dynamics; this allowed us to provide the first wholistic understanding of this process in forests in Fukushima.”
Understanding how long radionuclides like 137Cs can remain in ecosystems and how far they can spread is essential to implement policies to protect people from radiation in Fukushima-sourced food and wood. In addition, the article also explores the effectiveness of using potassium-containing fertilizers to prevent the uptake of 137Cs in plants. “The compilation of data, parameters, and analyses we present in our chapter will be helpful for forest remediation both in Japan and the rest of the world,” remarks Hashimoto.
When preventive measures fail, the only remaining option is trying to fix the damage done–in the case of radiation control, this is only possible with a comprehensive understanding of the interplay of factors involved.
In this manner, this new chapter will hopefully lead to both timely research and more effective solutions should a nuclear disaster happen again.
Fukushima businesses battle for survival, as few former residents return
Fukushima businesses struggling to stay afloat despite government help, Japan Times, 29 Jan 21 Commercial complexes built as part of revitalization projects in areas affected by the triple meltdown at the Fukushima No. 1 nuclear power plant in March 2011 are struggling to stay afloat.Faced with difficulties due to swelling costs, business operators often turn to local municipalities for financial aid to help them overcome crises. But the financial struggles will not end soon, given that only a portion of the residents who evacuated from the disaster-stricken areas have returned or are expected to.
Those outlets are now facing a testing moment that will determine whether they can continue with their businesses.
A small village in Fukushima Prefecture located northwest of the power plant, Iitate, which was issued evacuation orders after the nuclear disaster, built the commercial complex Michi no Eki Madeikan for ¥1.4 billion. However, business at the commercial building, which has a convenience store and a vegetable stand, has always been touch and go.
Madei Garden Village Iitate runs the business using a ¥33 million payment from the local government. But even with those funds, the operator saw a deficit of ¥9 million in fiscal 2017 and ¥8 million the following year.
Faced with a severe financial crisis, the company was forced to seek financial aid worth ¥35 million from Iitate in 2018.
After revising its business strategy, the company managed to reduce running costs and decrease the deficit to ¥300,000 in fiscal 2019.
“We are expecting a profit in fiscal 2020. I’ll be dealing with the accumulating debt as a priority,” says Rokutaro Kurihara, the company’s managing director.
Kurihara’s company is among those operating at 12 commercial facilities in 10 towns in areas that used to be designated as no-go zones, including the town of Namie and Tamura city.
Since most of the stores and shops shut down when residents evacuated from the region, local governments have built them for returning residents.
But many of them share the same fate as Kurihara’s…… https://www.japantimes.co.jp/news/2021/01/29/national/fukushima-business-struggles/
Fukushima nuclear clean-up delayed as new radioactive contamination found
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Newly found Fukushima plant contamination may delay cleanup as thousands still unable to return home https://www.9news.com.au/world/japan-nuclear-explosion-new-fukushima-plant-contamination-fears-leave-thousands-unable-to-return/afae1775-bcbf-472a-98a0-313efc1e7335, By Associated Press Jan 27, 2021 A draft investigation report into the 2011 Fukushima nuclear meltdown, adopted by Japanese nuclear regulators on Wednesday, says it has detected dangerously high levels of radioactive contamination at two of the three reactors, adding to concerns about decommissioning challenges.
The interim report said data collected by investigators showed that the sealing plugs sitting atop the Number Two and Number Three reactor containment vessels were as fatally contaminated as nuclear fuel debris that had melted and fell to the bottom of the reactors following the March 2011 tsunami and earthquake.
The experts said the bottom of the sealed plug, a triple-layered concrete disc-shaped lid 12 metres in diameter sitting atop the primary containment vessel, is coated with high levels of radioactive Cesium 137.
The Number One reactor lid was less contaminated, presumably because the plug was slightly knocked out of place and disfigured due to the impact of the hydrogen explosion, the report said.
The experts measured radiation levels at multiple locations inside the three reactor buildings, and examined how radioactive materials moved and safety equipment functioned during the accident.
They also said venting attempt at Unit Two to prevent reactor damage never worked, and that safety measures and equipment designs still need to be examined.
The lid contamination does not affect the environment as the containment vessels are enclosed inside the reactor buildings.
The report did not give further details about if or how the lid contamination would affect the decommissioning progress.
Nuclear Regulation Commission Chairman Toyoshi Fuketa called the findings “extremely serious” and said they would make melted fuel removal “more difficult.”
He said figuring out how to remove the lids would be a major challenge.
Removing an estimated 900 tons of melted fuel debris from three reactors is a daunting task expected to take decades, and officials have not been able to describe exactly when or how it may end.
The Fukushima plant was to start removing melted fuel debris from Unit Two, the first of three reactors, later this year ahead of the 10th anniversary of the accident.
But in December, plant operator Tokyo Electric Power Co. and the government announced a delay until 2022.
They said the development of a robotic arm for the debris removal — a joint project with Britain — has been delayed due to the pandemic.
Under the current plan, a remote-controlled robotic arm will be inserted from the side of the reactor to reach the molten fuel mixed with melted parts and concrete floor of the reactor.
Eventually the lids also would have to be removed, but their contamination is a major setback.
The team of experts entered areas inside the three reactors that were previously highly contaminated and inaccessible after radiation levels came down significantly.
They’re seeking data and evidence before they get lost in the cleanup.
Massive radiation from the reactors has caused some 160,000 people to evacuate from around the plant.
Tens of thousands are still unable to return home.
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Fukushima’s former residents demand stricter decontamination of radiation before they would return
One condition that stands out among the list, though, is a further reduction in the amount of radiation, which 1 in 3 residents raised as an important issue. The government has been decontaminating specially designated areas, where it was once thought that settlement was limited for good but which can be reopened for residents. It has set the annual radiation exposure limit to be lower than 20 millisieverts as one of the standards to lift the evacuation orders.
Now that nearly 10 years have passed since the nuclear crisis at the Fukushima No. 1 plant, Kamata stressed the need for the government to decontaminate the area under stricter standards so that residents will feel safer returning to their hometown.
“In order to maintain people’s feelings for their hometowns, I want (the government) to stick to the stance of rebuilding our Tomioka in the form that we all want, including restoring the (basic living) environment.”……..
The lifting of the evacuation order in the specially designated area is expected in the spring of 2023, 12 years after the order was first issued.
“Without tackling issues such as restoring the living environment and infrastructure, as well as decommissioning of the Fukushima No.1 plant in a diligent manner, people won’t come back,” said Kamata. …https://www.japantimes.co.jp/news/2021/01/22/national/fukushima-decontaminating-town/
India must oppose dumping of radioactive waste into the Pacific, but IAEA and Indian govt downplay the dangers
Silence on Fukushima Disaster Exposes our Approach to Nuclear Safety and Why India must Oppose Dumping of Radioactive Water Into the Pacific, BYSONALI HURIA, JANUARY 17, 2021 Next year, the operator of the tsunami-hit Fukushima nuclear plant would start releasing radioactive water into the Pacific Ocean. A number of nations are up in arms against it, but Indian authorities are not rising to the occasion to protect its most vulnerable against the impending disaster.
SONALI HURIA explains what is at stake for people and the environment.
THE new year has begun on a grim note with a toxic gas leak at the Rourkela Steel Plant in Odisha on 6 January, which claimed the lives of four contractual workers. This is the latest in a disconcerting string of industrial accidents in India over the last few years, which have remained peripheral to the mainstream media narrative.
It appears that India has learned precious little from the Bhopal gas disaster, which has ebbed from public memory even as the accident site remains contaminated and survivors continue to await an elusive justice.
Against this backdrop, as we approach the tenth anniversary of the Fukushima nuclear disaster, it may be pertinent to think of what a nuclear accident might mean for the country’s already shoddy industrial safety record and systemic inadequacies, especially as the Fukushima disaster now poses a formidable new challenge to which India’s response, so far, has been active denial and muted silence.
“Fukushima” has become synonymous with the devastating and ongoing nuclear accident that occurred off the eastern Pacific coast of Japan in 2011.
Japan’s nuclear regulator, the Nuclear Regulation Authority (NRA) reportedly stated as recently as in December 2020 that the reactor buildings of the Fukushima Daiichi nuclear power plant continue to record “lethal” levels of radiation, thus posing a “serious challenge” to decommissioning efforts.
DISPOSING CONTAMINATED WATER
Among the many vexing problems precipitated by the accident is the disposal of the contaminated water from the beleaguered nuclear plant.
The acerbic debate within Japan on the disposal of this radioactive water came to a head recently when the Japanese government made it clear that beginning 2022, the operator of the Fukushima plant, the Tokyo Electric Power Company (TEPCO), would start releasing radioactive water from the wrecked plant into the Pacific Ocean—a task envisaged to be accomplished over the next several years as part of larger decommissioning efforts.
Since the devastating earthquake and tsunami off the Pacific coast of Tōhoku triggered a meltdown at the three units of the nuclear plant in March 2011, cleanup efforts have required, among other things, the pumping of tens of thousands of tons of water to cool the smouldering reactor fuel cores.
However, this has led to a steady on-site accumulation of heavily contaminated water—as of 2020, TEPCO has nearly 1.23 million metric tons (and counting) of highly radioactive wastewater on its hands that has been stored in nearly 1,044 tanks…………
LOOMING DANGERS
Greenpeace International has warned that carbon-14, which TEPCO affirmed is present in the contaminated tank-water for the first time in August 2020, has the “potential to damage human DNA”.
Tokyo’s decision has understandably ruffled feathers globally.
The Republic of Korea, China, and Chile, state parties to the London Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter, have repeatedly called for international deliberation and resolution of the problem, even as South Korea, which has banned all seafood imports from the region since the accident, has formally called upon the International Atomic Energy Agency (IAEA) to dissuade Japan. While the North Korean state media described the proposed discharge as a “criminal act”, a coalition of environmental and citizens’ groups from Taiwan petitioned the Japanese government in November 2020, expressing their objections.
The IAEA has confined itself to assisting the Japanese government rather than question or evaluates the proposed water disposal plan. It has demonstrated yet again that it is not the international nuclear watchdog many believe it to be.
UN Special Rapporteurs on hazardous wastes, right to food, rights to assembly and association, and the rights of indigenous people have also urged Japan not to use the present pandemic as a “sleight of hand” to release the radioactive water without any credible consultation within and outside Japan regarding a decision that will have a long-lasting impact on the environment and human health.
DANGERS FOR INDIA
The stakes for India cannot be overstated either.
In an unanticipated moment of candidness, nuclear health scientists from within the Indian establishment—the Defence Research Development Organisation (DRDO) and the All India Institute of Medical Sciences (AIIMS)—have warned that the release of the Fukushima wastewater containing “radioactive isotopes such as cesium, tritium, cobalt and carbon-12” will prove disastrous for human and aquatic health across the world’s coastal belts by crippling fishing economies and causing a “spectrum of diseases, including cancer”……..
the Indian government, in particular, its nuclear establishment, has consistently downplayed the risks associated with nuclear energy to public and environmental health, even labelling public concerns surrounding radiation “myths”, and whose first reactions to the Fukushima nuclear accident were of impudent denial.
… EAS Sarma, former Union Power Secretary to the Government of India, has exhorted the Department of Atomic Energy (DAE) to apprise the Prime Minister’s Office of the “far-reaching implications” of the proposed release of the radioactive Fukushima water, and for India to take a firm stand at the IAEA against this unilateral decision of the Japanese government.
TEPCO has reportedly already been draining hundreds of tonnes of contaminated water into the Pacific Ocean. Noting with dismay the abject silence of the DAE and India’s Environment Ministry in this regard, Sarma identifies the lack of a robust nuclear regulatory body or mechanism in India as responsible for this lack lustre approach to an issue of great import for the health of the people of the country and the larger marine ecology of the region.
Domestically, it is time to pause and think whether India is equipped to handle an accident of the scale of Fukushima—a nuclear Bhopal?
Sarma’s letter to the Cabinet Secretary also underscores the need for the government to recognise the magnitude of the devastation wrought by nuclear accidents, the inability of TEPCO to handle the disaster even a decade since its occurrence, and thus to pause its own plans “to import reactors on a large scale and enlarge nuclear power generation capacity”.
…..…DOWNPLAYING THE DANGERS
In effect, therefore, the IAEA has demonstrated yet again that it is not the international nuclear watchdog many believe it to be. In her fascinating new account of the Chernobyl nuclear accident, Manual for Survival, the environmental historian, Kate Brown, explores the IAEA’s complicity in downplaying the accident and denying radiation impacts in exposed Chernobyl children and even asserting that “radiation anxiety” stems from “irrational fears”, as nuclear technocrats across the globe are prone to doing.
In the tenth year of the ongoing Fukushima accident, therefore, it is imperative that a dialogue be initiated on the need for an effective international nuclear monitoring regime that isn’t also tasked with the responsibility of promoting nuclear energy.
Domestically, it is time to pause and think whether India is equipped to handle an accident of the scale of Fukushima—a nuclear Bhopal?
At the very least, it is time India’s government demonstrates that it is willing and able to deploy its purportedly surging international stature and influence under Prime Minister Narendra Modi to protect the country’s environment and the health of its vulnerable communities against the Fukushima water release, which appears a near certainty now. https://www.theleaflet.in/silence-on-fukushima-disaster-exposes-our-approach-to-nuclear-safety-and-why-india-must-oppose-dumping-of-radioactive-water-into-the-pacific/#
Thyroid cancer at ages 0 and 2 at the time of the nuclear accident-Health survey in Fukushima Prefecture January 2021
Thyroid cancer at ages 0 and 2 at the time of the nuclear accident-Health survey in Fukushima 
Prefecture Posted by: ourplanet Posted on: Thu, 01/14/2021 –00:46 http://ourplanet-tv.org/?q=node/2537 (Japanese only)
(Translated from Google) The “Prefectural Health Survey” Review Committee was held in Fukushima City on the 15th to discuss the health survey of Fukushima citizens following the accident at the Fukushima Daiichi Nuclear Power Plant. For the first time, it was discovered that two infants, a 0-year-old girl and a 2-year-old girl at the time of the accident, were diagnosed with thyroid cancer.
Material https://www.pref.fukushima.lg.jp/site/portal/kenkocyosa-kentoiinkai-40.html
This time, the result of the fourth round of thyroid examination until June last year was newly announced. The number of children diagnosed with suspected thyroid cancer by fine needle cytology increased by 6 from the previous time to 27, and the number of children who underwent thyroidectomy increased by 3 from the previous time to 16 children. Up to now, 252 patients have been diagnosed with thyroid cancer or suspected thyroid cancer from prior examination, of which 203 have undergone thyroid surgery. 202 people, excluding one, were confirmed to have thyroid cancer.
In the fourth round of examination, it was found for the first time that a girl who was 0 years old and a girl who was 2 years old at the time of the accident were diagnosed with thyroid cancer. Since the age of the examination is not the actual age but the grade, the ages at the time of the examination are 9 years old (3rd grade of elementary school) and 11 years old (5th grade of elementary school), respectively. According to the previous test results of 27 patients, 5 patients had “A1 judgement” without nodules or tumors, and 16 people had “A2 judgement” with nodules of 5 mm or less or cysts of 2 cm or less, 5 mm or more. 5 people had a “B-judgement” with nodules or cysts of 2 cm or more, and 1 had not been examined. He had the smallest tumor size of 6.1 mm and the largest tumor was 29.4 mm.
What stands out in the results of the fourth round of examination is the high dose of radiation for people diagnosed with thyroid cancer. Of the 27 patients diagnosed as suspected of being malignant by fine needle cytology, 11 patients (40.7%) who submitted the basic survey questionnaire had an exposure dose of less than 1 mSv in 2 patients (18.1%) 4 months after the accident. The number of children exposed to 2mSv or more was the highest, with 4 (36.3%) from 1mSv to 2mSv and 5 (45.5%) from 2mSv to 5mSv. In particular, the two boys who were five years old at the time of the accident were both over 2mSv.
According to the results of the basic survey of all Fukushima residents, 62.2% are less than 1mSv, 31.6% are from 1mSv to 2mSv, and 5.5% are from 2mSv to 3mSv. Very different.
To review the mass examination at school At this review committee, a major shift was made to reviewing simultaneous examinations at schools. The test, which has found more than 200 people with thyroid cancer, raises the theory of “overdiagnosis” among experts who deny the effects of radiation exposure, saying that they are finding thyroid cancer that they do not have to find. There is a growing opinion that the mass examination at school should be reviewed.
Based on these opinions, the review committee decided to conduct an interview survey at schools in the prefecture on August 31st last time. This time, there was a report on the results of a survey conducted by the prefecture at 26 elementary and junior high schools and high schools in the prefecture.
At many schools, thyroid examinations were performed during class hours, criticized by Shoichiro Tsugane, a member of the National Cancer Center, saying, “You can’t take this without a strong will.” “The benefits of the test are not except that you can be reassured when you get negative. The discovery of thyroid cancer has little benefit in avoiding death or poor quality of life, especially when you are diagnosed with thyroid cancer. “I think it will be a huge disadvantage for those who do,” he said. “Thyroid examination in a group of asymptomatic healthy people is not desirable. I asked him to stop the mass examination at school. ..
In addition, Professor Toshiya Inaba of Hiroshima University also cut out at the school examination that “they are left behind” and said, “Parents are not worried. The school rents the venue. The prefectural medical college has an inspection. I understand each position well, but in the end, it is the people who are left unattended. ” He emphasized that the prefectures and medical colleges that are the subjects of the survey should explain more to children and students the significance of the test and the fact that it can be rejected.
In response, Professor Satoshi Tomita of Fukushima University argued head-on. He criticized that “many Fukushima residents have anxiety about their health” and that members of the Prefectural Health Investigation Committee, especially members outside Fukushima Prefecture, are calling for the cancellation or reduction of examinations. He said that thyroid examination is a way to relieve the anxiety of Fukushima residents, “the anxiety of Fukushima residents, especially those with children, is left behind.” “It is dangerous to go in the direction of reduction easily.” “Thinking” was pointed out.
Ikuko Abe, chairman of the Fukushima Clinical Psychologists Association, who also lives in Fukushima Prefecture and has a close relationship with schools, agrees with this, saying, “I agree with Professor Tomita’s opinion.” “Given the anxiety about radiation that Fukushima residents have, thyroid examinations are very reassuring,” she said. “Reducing or eliminating the examinations still takes the opposite position. I want you to do it. “
What caught my eye in the discussion was the presence of Katsushi Tahara, director of the Ministry of the Environment’s Health and Welfare Department. The members of the review committee from the Ministry of the Environment have not said much, but have played a role in important aspects of policy change. This time too, Mr. Tahara considers the fact that the school is cooperating with the implementation of the examination, such as encouraging households whose delivery to Fukushima Medical University is delayed to submit again when the deadline has passed. About 30% of the children undergoing medical examinations at school were asked intensively about this point, such as confirming that the school side took over the collection of consent forms.
To conduct hearings with the person to be inspected Following a survey of the school, the prefecture proposed to have a place to hear directly from the children and students who had been inspected. Questions were raised about the representativeness of the interviewees, and there was an opinion requesting a quantitative survey such as a questionnaire, but the prefecture’s proposal was approved because the survey took too long.
Regarding this “interview survey,” there was a harsh debate over the neutrality of the content, such as the opinion that a pilot study was unavoidable and that the voices of patients diagnosed with thyroid cancer should also be heard. With the strong push back of the constellation chairman, it was decided that the selection of the target audience and the holding method would be left to the chairperson and the prefecture. The results will be reported at the next meeting.
In response to the further shift to reviewing mass screening at school in this “interview,” Chiba parent and child of the “thyroid cancer support group Hydrangea Association” that supports families with thyroid cancer said, “Accident Among the 0-year-old and 2-year-old children at that time, a child with thyroid cancer appeared and my chest hurts. Thyroid cancer also has recurrence and metastasis, and early detection and early treatment are beneficial for the child. Given that the cancer was found in a school test, there can be no argument to eliminate the school test. ” The group has made offers to the prefecture three times in the past and opposes the reduction of inspections.
In March 2011 Japan’s government considered evacuating the then Emperor Akihito further away from Fukushima
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Emperor’s evacuation to Kyoto weighed after Fukushima nuclear disaster , Japan Times, 3 Jan 2021 The government led by the now-defunct Democratic Party of Japan unofficially proposed that then-Emperor Akihito evacuate to Kyoto or somewhere further west immediately after the eruption of the March 2011 Fukushima nuclear crisis, a former administration official has said.However, the Imperial Household Agency flatly dismissed the idea, saying there was “no way” the emperor would do so at a time when people were not evacuating Tokyo, leading to the government of Prime Minister Naoto Kan to give up the proposal.
Several former senior officials at the Prime Minister’s Office separately said the administration at the time also briefly considered evacuating Prince Hisahito, the son of Crown Prince Akishino and Crown Princess Kiko, from Tokyo to Kyoto…….. https://www.japantimes.co.jp/news/2021/01/02/national/emperor-fukushima-nuclear/ |
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Fukushima nuclear clean-up hugely affected by discovery of lethal radiation levels
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Lethal Levels of Radiation Found in Damaged Fukushima Reactor Will Have ‘Huge Impact’ on Shutdown, Regulators Warn https://www.commondreams.org/news/2020/12/30/lethal-levels-radiation-found-damaged-fukushima-reactor-will-have-huge-impact The radiation levels reported around shield plugs at two reactors are high enough to kill a worker exposed for even an hour. Brett Wilkins, staff writer
In what Japanese regulators on Wednesday called an “extremely serious” development, lethal levels of radiation have been recorded inside the damaged reactor building at the Fukushima No. 1 nuclear power plant, threatening the shutdown and decommissioning of the site of the second-worst peacetime nuclear disaster in history.”This will have a huge impact on the whole process of decommissioning work.” —Toyoshi Fuketa, Nuclear Regulation Authority According to The Asahi Shimbun, Japan’s Nuclear Regulation Authority (NRA) reported that massive amounts of radioactive materials have been found around shield plugs of the containment vessels in the No. 2 and No. 3 reactors. NRA officials estimated radiation levels at 10 sieverts per hour—enough to kill a worker who spends just one hour there. Decommission of the reactor requires workers to remove the shield plugs, which block radiation from the reactor core during normal plant operation. This discovery has forced officials to reconsider their shutdown plans. NRA chair Toyoshi Fuketa said that removing the highly irradiated shield plugs made safe retrieval of nuclear fuel debris—an already dangerously daunting task—all the more difficult.. “It appears that nuclear debris lies at an elevated place,” Fuketa said at a news conference earlier this month. “This will have a huge impact on the whole process of decommissioning work.” The latest alarming find is the result of an investigation that resumed in September after a five-year pause in which the NRA took new measurements of radiation levels around the shield plugs at the No. 2 and No. 3 reactors. Tokyo Electric Power Co., the operator of the plant, announced December 24 that nuclear fuel debris removal would be postponed until 2022 or later due to the coronavirus pandemic. As Common Dreams reported in October, Greenpeace and other environmental and anti-nuclear advocates expressed shock and outrage after the Japanese government announced a plan to release stored water from the ill-fated plant into the Pacific Ocean. Greenpeace subsequently released a report claiming that radioactive carbon-14 released into the ocean “has the potential to damage human DNA.” The Fukushima Daiichi disaster—the result of a 2011 earthquake and tsunami that killed more than 15,000 people in northeastern Japan—was the worst nuclear incident since the 1986 Chernobyl meltdown in the former Soviet Union, and the worst in Japan since the United States waged a nuclear war against the country in 1945 that killed hundreds of thousands of people. |
Delay in removal of melted nuclear fuel from Fukushima No 1 Power plant, because of the pandemic
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Pandemic delays melted nuclear fuel removal at Fukushima http://www.asahi.com/ajw/articles/14059716, By YU KOTSUBO/ Staff Writer, December 25, 2020 The government and operator of the Fukushima No. 1 nuclear power plant announced they had abandoned plans to start removing melted nuclear fuel and other contaminated debris from the stricken facility within 2021, citing delayed development in Britain of a robotic arm crucial for the purpose.They explained that the novel coronavirus pandemic was chiefly to blame for the delay.
The government and Tokyo Electric Power Co. had planned to start the hazardous task in 2021 but said Dec. 24 that is no longer feasible. In December 2011, nine months after the triple meltdown triggered by the March earthquake and tsunami disaster, the two parties set a goal of starting to retrieve the melted fuel “within 10 years” so reactor decommissioning could start. Since then, they have had to downsize the scale of debris that can be realistically be retrieved, mainly because the technology does not exist to accomplish such dangerous work. The No. 2 reactor, along with the No. 1 and No. 3 reactors, went into meltdown after tsunami generated by the 2011 Great East Japan Earthquake knocked out cooling systems at the plant. Debris retrieval constitutes the biggest obstacles to deciding how reactor decommissioning will progress in the years ahead. The debris is emitting extremely high levels of radiation, making it difficult to access the site even with robots. Little is known about the state of the debris or its composition. The government and TEPCO revised the timetable last December with the aim of retrieving a few grams of debris on an experimental basis in 2021 from the No. 2 reactor. The No. 2 reactor was chosen because the state of the containment housing is better understood than for the other reactors. Japan approached Britain to develop a special robotic arm because it has more experience in this field. But the work has experienced significant delays because of the COVID-19 pandemic. Trial tests for the robotic arm are planned to be held in Japan next spring or later with retrieval work postponed to 2022 or later. However, many questions remain about the reactor decommissioning of the Fukushima No. 1 nuclear power plant as a whole due to a number of factors such as wrecked equipment at the site. For example, initial projections to complete the removal of used nuclear fuel from a fuel pool were delayed for 10 years. However, the government and TEPCO are sticking to their schedule to complete reactor decommissioning between 2041 and 2051. With regard to debris retrieval, this is to be done on a “step-by-step” basis. The two parties on Dec. 24 also announced they will postpone the start of probing the interior of the No.1 reactor’s containment vessel from the second half of fiscal 2020 to fiscal 2021. They have been working to secure a route that will allow robotic equipment to explore the interior but experienced huge hurdles because their current method caused radioactive substances to spread. The accumulated debris in the three reactors is estimated to total about 880 tons. Tentative plans call for increasing the amount of debris to be retrieved gradually after a few grams are collected with a metallic brush attached to the top of the robotic arm and analyzed. |
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Fukushima nuclear debris removal to be delayed due to pandemic
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Fukushima nuclear debris removal to be delayed due to pandemic, https://www.japantimes.co.jp/news/2020/12/23/national/fukushima-nuclear-debris-delay/ The operator of the Fukushima No. 1 nuclear power plant, which suffered core meltdowns in 2011, has decided to delay the removal of nuclear debris by about one year from 2021 due to the coronavirus pandemic, sources said Wednesday.The process of removing the melted fuel, the most difficult part of cleaning up the facility, was to begin at the No. 2 reactor in 2021, but the virus spread has stalled tests in the U.K. of a robot arm that is to be used for the removal, the sources said.
Of the Nos. 1 to 3 reactors that experienced meltdowns following a massive earthquake and tsunami, the removal procedure was to start at the No. 2 unit because the operator, Tokyo Electric Power Company Holdings Inc., had the best grasp of its internal condition, they said. Tepco had planned to insert a robot arm into the unit’s containment vessel, from which it would initially extract around 1 gram of the debris at a time, then gradually expand the amount as it works toward removing several kilograms a day. The company was originally scheduled to verify in August the viability of the robot arm in the U.K. and transfer the equipment to Japan in February 2021 so that workers could start training with it. However, the spread of COVID-19 in the U.K. has caused delays, as precautionary measures were taken to limit the number of workers at factories, according to the sources. Tepco is considering doing part of the testing in Japan. The removal process is expected to take several years for the No. 2 unit, which according to one estimate contains 237 tons of debris. Together, the three units are estimated to house around 880 tons of debris. The government and Tepco have said they expect the plant’s decommissioning to be completed between 2041 and 2051. |
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Fukushima nuclear reactor no.1 – debris prevented from falling into fuel storage pool
Tokyo Electric Power Company on Thursday released footage showing precautions it had taken to keep a broken crane from falling into the pool.
The crane, weighing 161 tons, has been hanging over the pool since a hydrogen explosion hit the building in March 2011. The pool is still holding nuclear fuel.
The video shows a platform being moved on rails to a spot directly under the broken part of the crane. A bag on the platform is then filled with mortar and fixed to the crane to hold it in place.
The entire process was done remotely due to high levels of radiation in the reactor building.
TEPCO plans to install a cover over the whole building before starting the removal of fuel from the pool as early as fiscal 2027.
Survey finds that most Fukushima evacuees do not intend to return
65% of Fukushima evacuees have no intention of returning home: survey https://english.kyodonews.net/news/2020/11/675982b84707-65-of-fukushima-evacuees-have-no-intention-of-returning-home-survey.html
KYODO NEWS Osaka, Sixty-five percent of the people who evacuated from Fukushima Prefecture after the March 2011 nuclear disaster have no intention of returning, according to a recent survey conducted by a Japanese university.
While the survey, conducted by a research facility at Kwansei Gakuin University, only received responses from 522 of 4,876 people to whom questionnaires were sent, it provided a rare insight into how former residents see the reconstruction of their former home.
The government of the northeastern prefecture has not carried out such surveys in recent years. There were over 36,900 evacuees within and outside the prefecture as of October, according to the prefectural government.
Among the 522 respondents who resided in the prefecture at the time of the nuclear meltdowns at the Fukushima Daiichi power plant triggered by the massive quake and ensuing tsunamis, 341 people said they do not intend to return.
According to the survey conducted between July and September, 138 people said they plan to go back and 43 people did not answer or offer a valid response.
In response to a multiple-choice question asking why they have not returned to their homes, 46.1 percent said they still fear contamination of the environment, followed by 44.8 percent who said they have settled down in places they currently live.
Destructive potential of over a million tons of radioactive water into the Pacific
Almost Unnoticed Nuclear Pandemic Is Spreading in Japan, https://indepthnews.net/index.php/the-world/asia-pacific/3967-almost-unnoticed-nuclear-pandemic-is-spreading-in-japanBy Manlio Dinucci, MONTREAL (IDN) 4 Nov 20, – It was not Covid-19, therefore the news went almost unnoticed: Japan will release over a million tons of radioactive water from the Fukushima nuclear power plant into the sea. The catastrophic incident in Fukushima was triggered by the Tsunami that struck the north-eastern coast of Japan on March 11, 2011, submerging the power plant and causing the core of three nuclear reactors to melt.The power plant was built on the coast just 4 meters above sea level with five-meter-high breakwater dams, in a tsunami-prone area with waves 10-15 meters high. Furthermore, there had been serious failures by the private company TEPCO (the Tokyo Electric Power Company) managing the plant, in the control of the nuclear plant: the safety devices did not come into operation at the time of the Tsunami.
Water has been pumped through the reactors for years to cool the molten fuel. The water became radioactive and was stored inside the plant in over a thousand large tanks, accumulating 1.23 million tons of radioactive water. TEPCO is building other tanks, but they will also be full by mid-2022.
TEPCO must continue pumping water into the melted reactors and has decided to discharge, in agreement with the government, the water accumulated so far into the sea after filtering it to make it less radioactive (however, to what extent it is not known) with a process which will last 30 years. There is also radioactive sludge accumulated in the decontamination filters of the plant, stored in thousands of containers, and huge quantities of soil and other radioactive materials.
As TEPCO admitted, the melting in reactor 3 is particularly serious because the reactor was loaded with Mox, a much more unstable and radioactive mix of uranium oxides and plutonium.
The Mox for this reactor and other Japanese ones was produced in France, using nuclear waste sent from Japan. Greenpeace has denounced the danger deriving from the transport of this plutonium fuel for ten thousand kilometres.
Greenpeace also denounced that Mox favours the proliferation of nuclear weapons, since plutonium can be extracted more easily and, in the cycle of uranium exploitation, there is no clear dividing line between civilian and military use of fissile material.
Up to now, around 240 tons of plutonium for direct military use and 2,400 tons for civil use (nuclear weapons can however be produced with them), were accumulated in the world (according to 2015 estimates), plus about 1,400 tons of highly enriched uranium for military use. A few hundred kilograms of plutonium would be enough to cause lung cancer to 7.7 billion inhabitants of the planet, and plutonium remains lethal for a period corresponding to almost ten-thousand human generations.
A destructive potential has thus accumulated, for the first time in history, capable of making the human species disappear from the face of Earth. The nuclear bombings of Hiroshima and Nagasaki; the more than 2,000 experimental nuclear explosions in the atmosphere, at sea and underground; the manufacture of nuclear warheads with a power equivalent to over one million Hiroshima bombs; the numerous accidents involving nuclear weapons and those involving civilian and military nuclear plants, all this has caused radioactive contamination that has affected hundreds of millions of people.
A portion of approximately 10 million annual cancer deaths worldwide – documented by WHO – is attributable to the long-term effects of radiation. In ten months, again according to the World Health Organization data, Covid-19 caused about 1.2 million deaths worldwide.
This danger should not be underestimated, but it does not justify the fact that mass media, especially television, did not inform that over one million tons of radioactive water will be discharged into the sea from the Fukushima nuclear power plant, with the result that it will further increase cancer deaths upon entering in the food chain.
Nuclear disaster: Fukushima schools frozen in time
Nuclear disaster: Fukushima schools frozen in time https://www3.nhk.or.jp/nhkworld/en/news/backstories/1365/
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Sakurayama Kyoko, NHK World Correspondent 16 Nov 20, At an elementary school in Futaba Town, Fukushima Prefecture, children’s bags and notebooks still lie scattered where they were left after the meltdown at the Fukushima Daiichi nuclear power plant in 2011. The evacuation order for part of the town was lifted in March this year, but no one has returned to live there.
Nishizaki Ryusuke, 21 and a former student at the Futaba Minami Elementary School, visited it last month for the first time since the accident. It is located just three kilometers from the nuclear plant. The sight of everything frozen in time brought back vivid memories. Ties severedNishizaki, then a fifth-grader, was in his homeroom when the earthquake that precipitated the crisis struck. He fled with only the clothes he was wearing. Since that day, he has been living as an evacuee, moving with his family from one place to another within Fukushima Prefecture and in neighboring Niigata. His ties with his home and neighbors have been severed. “ I had no doubt that I would spend my life in the town,” says Nishizaki. “But the earthquake and the nuclear accident changed everything all of a sudden.” Ties severedNishizaki, then a fifth-grader, was in his homeroom when the earthquake that precipitated the crisis struck. He fled with only the clothes he was wearing. Since that day, he has been living as an evacuee, moving with his family from one place to another within Fukushima Prefecture and in neighboring Niigata. His ties with his home and neighbors have been severed. “ I had no doubt that I would spend my life in the town,” says Nishizaki. “But the earthquake and the nuclear accident changed everything all of a sudden.” The town projected that renovating them would cost 900 million yen, or about 8.6 million dollars, per school. In addition, it would require an estimated 10 million yen, or about 95,000 dollars, a year in maintenance costs. Yoshida Katsunori, an official at Namie’s education board, says: “It’s extremely important to pursue the ideal of preserving school buildings. But, financially speaking, it might not be realistic.” Fukaya Naohiro, a Visiting Associate Professor at the Fukushima Future Center For Regional Revitalization, says all efforts should be made to preserve buildings that can serve as reminders of the accident and help us prepare for future disasters. “When it came to preserving the Atomic Bomb Dome in Hiroshima, it wasn’t just local residents, but people across Japan, who took part in the debate,” says Fukaya. “Each and every one of us should think about what to do with the Fukushima buildings.” Concrete remindersNishizaki says that there are some things that people can understand only when they visit the site and see it for themselves: “We want people to know that children who had been at the schools at the time of the accident couldn’t go back for nine and a half years.” At the time of writing, just one building in Fukushima Prefecture has been listed to be preserved as a memorial for future generations. |
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The accumulating radioactive water is another Fukushima disaster crisis
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Japan faces another Fukushima disaster crisis https://www.eco-business.com/news/japan-faces-another-fukushima-disaster-crisis/ – 6 Nov 20, A plan to dump a million tonnes of radioactive water from the Fukushima disaster off Japan is alarming local people. Paul Brown, Climate News Network. The Japanese government has an unsolvable problem: what to do with more than a million tonnes of water contaminated with radioactive tritium, in store since the Fukushima disaster and growing at more than 150 tonnes a day.
The water, contained in a thousand giant tanks, has been steadily accumulating since the nuclear accident in 2011. It has been used to cool the three reactors that suffered a meltdown as a result of the tsunami that hit the coast. Tritium is a radioactive element produced as a by-product by nuclear reactors under normal operation, and is present everywhere in the fabric of the reactor buildings, so water used for cooling them is bound to be contaminated by it. To avoid another potentially catastrophic meltdown in the remaining fuel the cooling has to continue indefinitely, so the problem continues to worsen. The government has been told that Japan will run out of storage tanks by 2022. Announcement delayedAs often happens when governments are faced with difficult problems, the unpalatable decision to release the contaminated water into the sea has not been formally announced, but the intention of the government to take this course has been leaked and so widely reported. Immediately both local and worldwide adverse reaction has resulted. There are the direct effects on the local fishermen who fear that no one will want to buy their catch, but over a wider area the health effects are the main concern. As ever with the nuclear industry, there are two widely different views on tritium. The Health Physics Society says it is a mildly radioactive element that is present everywhere, and doubts that people will be affected by it. But the Nuclear Information and Resource Service believes tritium is far more dangerous and increases the likelihood of cancers, birth defects and genetic disorders. The issue is further complicated because the Fukushima wastewater contains a number of other radionuclides, not in such high quantities, but sufficient to cause damage. Ian Fairlie, an independent consultant on radioactivity in the environment, is extremely concerned about Japan’s plans and the health of the local people. In a detailed assessment of the situation he says other highly dangerous radioactive substances, including caesium-137 and strontium-90, are also in the water stored at Fukushima. They are in lower quantities than the tritium, he says, but still unacceptably high – up to 100 times above the legally permitted limit. All these radionuclides decay over time − some take thousands of years − but tritium decays faster, the danger from it halving every 12.3 years. In a briefing for the Nuclear Free Local Authorities (NFLA), a UK based organisation, another independent analyst, Tim Deere-Jones, discusses research that shows that tritium binds with organic material in plants and animals. This is potentially highly damaging to human health because it travels up the food chain in the marine environment, specifically accumulating in fish. This means fish-eating communities on the Japanese coast could ingest much larger quantities of tritium than some physicists think likely. Relying on dilutionTim Deere-Jones is also concerned that the tritium will be blown inshore on the prevailing wind in sea spray and will bio-accumulate in food plants, making it risky to eat crops as far as ten miles inland. Because of the potential dangers of releasing the water the NFLA has asked the Japanese government to reconsider its decision. The government has not yet responded though, because officially it is still considering what to do. However, it is likely to argue that pumping the contaminated water into the sea is acceptable because it will be diluted millions of times, and anyway seawater does already contain minute quantities of tritium. Dr Fairlie is among many who think this is too dangerous, but he admits there are no easy solutions. He says: “Barring a miraculous technical discovery which is unlikely, I think TEPCO/Japanese Gov’t [TEPCO is the Tokyo Electric Power Company, owner of the Fukushima Daiichi plant] will have to buy more land and keep on building more holding tanks to allow for tritium decay to take place. Ten half-lives for tritium is 123 years: that’s how long these tanks will have to last – at least. “This will allow time not only for tritium to decay, but also for politicians to reflect on the wisdom of their support for nuclear power.” |
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1 This Month
petition to oppose the rapid increase of space-military industry threatening Jeju Island and the region.
[Petition by April 19th (KST)] Stop the joint military-Hanwha Systems-Jeju Provincial Government Sea Launch!
Chernobyl: The Lost Tapes – A good documentary on Chernobyl on SBS available On Demand for the next 3 weeks– https://www.sbs.com.au/ondemand/tv-program/chernobyl-the-lost-tapes/2352741955560
of the week–London Campaign for Nuclear Disarmament
Tell the Ukrainian Government to Drop Prosecution of Peace Activist Yurii Sheliazhenko
To see nuclear-related stories in greater depth and intensity – go to https://nuclearinformation.wordpress.com
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