Japan « nuclear-news

The Bombs Still Ticking

Eighty years after Hiroshima and Nagasaki, the trauma of nuclear warfare lingers for thousands of survivors in Japan.

Progressive Magazine, by Jim Carrier ,August 6, 2025

n the cryogenic silence of frozen biological material stored in her radiation lab, Dr. Ayumi Hida hears a lesson for the nuclear age: “The atom bomb must not be used ever again.”

Hida is the Nagasaki chief of clinical studies for the longest continuous health survey in history, a remarkable effort begun days after the destruction of the cities of Hiroshima and Nagasaki. Her work has helped to establish that Japanese people still suffer—physically, mentally, and socially—from two atomic bombs dropped, as of August 2025, eighty years ago.

As Japan marks these anniversaries on August 6 and 9, decades of medical exams by Hida and her colleagues at the Radiation Effects Research Foundation (RERF), along with evidence from its massive collection of preserved blood and tissue, have revealed that the nuclear genie unleashed in 1945 is still at work.

RERF has found in Japan’s bomb survivors new cancers, heart and immune problems, strokes, inflammation, leukemia, and even a form of cataracts—atop the usual maladies of old age. With a mean age of eighty-five, their ranks dropping by some 6,000 a year, 106,825 Japanese atomic bomb survivors—known as hibakusha, a term meaning “bomb-affected people”—also suffer from post-traumatic stress.

“They say, ‘I have an atomic bomb nest in my body,’ ” Dr. Masao Tomonaga tells The Progressive. Tomonaga, eighty-two, a hibakusha himself, cares for 400 survivors in a nursing home.

“The human consequences of the atomic bombs have not ceased,” he has written. “Many people are still dying of radiation-induced malignant disease. Therefore, it is too early to finalize the total death toll. Hibakusha have faced a never-ending struggle to regenerate their lives and families under the fear of disease.”

Honored for their anti-nuclear activism—the national Japanese hibakusha group known as Nihon Hidankyo won the Nobel Peace Prize in 2024—their unique stories describe what it was like to live through the only nuclear attacks in history. In Hiroshima and Nagasaki, where peace is a subject taught in schools, hibakusha speak regularly, so much so that students sometimes complain that they’ve heard it before.

Every living hibakusha is a walking laboratory, an experiment in the human effects of nuclear war. It is this story that is now emerging from long-term studies. “Fat Man,” the plutonium bomb dropped on Nagasaki on August 9, 1945, killed 73,000 of the city’s 240,000 citizens, either instantaneously or by the end of 1945, with a combination of blast wind, thermal burns, and radiation—or, in some cases, all three. Fat Man’s twenty-one-kiloton yield surpassed the Hiroshima uranium bomb’s fifteen kilotons, but its effect was partially shielded by Nagasaki’s hilly Urakami River canyon over which it exploded.

Six hundred yards from ground zero on the day of the blast, Nagasaki’s medical college and hospital lost half of its staff and students, but the survivors set up first-aid stations within days. The injuries they saw ranged from embedded glass to ruptured intestines to carbonized skin flash-burned by the radiation. Tomonaga wrote that “according to the saddest memory of some survivors, the blast wind tore off the heads of babies who were being carried on their mothers’ backs in the traditional Japanese way. Most of the mothers also died.”

By that September, U.S. Army, Navy, and Manhattan District teams, with doctors, pathologists, and physicists, arrived together with occupying forces. Their mission was driven, largely, by a desire to understand the bomb’s effects and how the United States could protect itself from a nuclear bomb in the future. At the time, radiation was a new and mysterious force, and discoveries were mostly classified. Information about radiation and anything related to the bombings would be censored in the Japanese media until 1952.

Within weeks, however, the effects of the radiation began to show up in individuals—loss of hair, bloody diarrhea, peeling skin. Autopsies were performed and organs—such as hearts, lungs, eyes, brains—from hundreds of victims were taken to the U.S. military’s Institute of Pathology in Washington, D.C., where, in a secret, bomb-proof laboratory, the effects of high radiation were studied, analysis that helped create the guidelines and warnings for radiation exposure used worldwide today. The last organs, slides, and tissues were returned to Japan in 1973.

n October 12, 1945, General Douglas MacArthur ordered the merger of Japanese and American medical studies on the bombings under the leadership of sixty American and more than ninety Japanese physicians and scientists. The Joint Commission for the Investigation of the Effects of the Atomic Bombs evolved, in 1975, into RERF, with labs in Nagasaki and Hiroshima. It is supported by the Japanese government and with $14 million annually from the U.S. Energy Department’s Office of Environment, Health, Safety and Security.

In 1950, Japan identified 94,000 bomb survivors and a control group of 27,000 people who were not exposed to the bomb, and began a lifetime epidemiological study of cancer and causes of death. Of that initial group of survivors, 25,000 adults are still being followed closely as they age for signs of any effects of radiation.

Every day at the RERF lab in Nagasaki, five of these patients arrive for their two-year screening. Blood is drawn, urine is collected, they are given a physical, and quizzed about their medical history and lifestyle. Living cells are stored in liquid nitrogen tanks—to date 2.3 million tubes of blood are stored there, Hida reports. Serum, plasma, and urine are put in freezers. The lab also holds half a million paraffin blocks of tissue and nearly one million autopsy and surgical slides, some dating back to 1945, she tells The Progressive. RERF is also following 77,000 children of bomb survivors and 3,600 people who were in their mothers’ wombs at the time when the bombs exploded. These efforts have helped RERF to identify three chronological phases of atomic bomb casualties.

By 1949, 210,000 survivors thought to be in relatively good health began to encounter the first signs of malignancy—leukemia, caused by radiation’s damage to blood cells. Cases in children and adults four-to-five times greater than those not exposed rose until 1955, and leveled out for a decade after that.

Around 1960, solid cancers began to appear, their numbers peaking in 2000 and remaining at that level since, Tomonaga reports. They included lung, breast, thyroid, stomach, colon, liver, skin, and bladder cancers. Some patients had three to five different cancers—all originating independently, rather than metastasizing from a source organ.

The third phase, evident now, includes a second wave of leukemia called myelodysplastic syndrome. This development, which occurs in the elderly at a rate of four times that of the general population, indicates that damaged cells in the bone marrow of children in 1945 have survived for more than seventy years in their bodies. Tomonaga’s hypothesis is that stem cells, which are designed to generate replacement cells in their host organ, “eventually transform to malignant cells” when gene abnormalities accumulate. In essence, they become tiny cancer factories, Tomonaga tells The Progressive. “It can be said that the atomic bomb is still killing some hibakusha.”

Statistically, 46 percent of leukemia deaths and 10 percent of solid cancer cases in Japan between 1950 and 2000 are attributable to the bomb’s radiation.

It is also known that Nagasaki’s plutonium bomb was inefficient—only one of the six kilograms of plutonium exploded—leaving most of its atoms intact. Plutonium particles, with a half-life of 24,000 years, have been discovered in lake bottoms, in spots where black rain fell ten to fifty miles from the hypocenter, and in the lungs and bones of people who died soon after the bombing. It’s possible, Tomonaga has written that the plutonium particles “continue to emit alpha rays intermittently and injure lung cells nearby, causing lung cancer.” This potential has yet to be studied.

As Japan recovered from World War II, hibakusha were shunned and discriminated against by non-bomb-affected families who feared that the hibakusha’s exposure to radiation would be harmful to them and their offspring. This belief arose from the many cases of miscarriage, deformities, and stillbirths of babies who were in utero when the bomb exploded, amid a long-held cultural embrace of purity and distaste for pollution.

This stigma remains today. ……………………………………………………………………………………………………………………….. https://progressive.org/magazine/the-bombs-still-ticking-carrier-20250806/

August 12, 2025 Posted by Christina Macpherson | health, Japan | Leave a comment

Tepco wraps up latest round of treated water release in Fukushima

Tokyo Electric Power Company Holdings said Sunday that it has completed
the second round of its fiscal 2025 release of treated water into the ocean
from the Fukushima No. 1 nuclear power plant.

The discharge of the water, containing radioactive tritium, was suspended due to a tsunami caused by a major earthquake near Russia’s Kamchatka Peninsula last week, but there
were no problems with the facilities involved in the operation. In the
second round, which began on July 14, Tepco diluted 7,800 tons of treated
water with large amounts of seawater before releasing it about 1 kilometer
off the coast of Fukushima Prefecture through an undersea tunnel. In the
current fiscal year through next March, a total of 54,600 tons will be
released into the sea in seven rounds, at the same pace as the previous
year.

Japan Times 3rd Aug 2025, https://www.japantimes.co.jp/news/2025/08/03/japan/tepco-2nd-round-treated-water-release/

August 7, 2025 Posted by Christina Macpherson | Fukushima continuing, wastes | Leave a comment

Hiroshima’s fading legacy: the race to secure survivors’ memories amid a new era of nuclear brinkmanship.

Eighty years on from the destruction of the city, registered survivors of the blast – known as hibakusha – have fallen below 100,000

Justin McCurry in Hiroshima, Tue 5 Aug 2025 , https://www.theguardian.com/world/2025/aug/05/hiroshima-atomic-bomb-80-year-anniversary-survivors

The fires were still burning, and the dead lay where they had fallen, when a 10-year-old Yoshiko Niiyama entered Hiroshima, two days after it was destroyed by an American atomic bomb.

“I remember that the air was filled with smoke and there were bodies everywhere … and it was so hot,” Niiyama says in an interview at her home in the Hiroshima suburbs. “The faces of the survivors were so badly disfigured that I didn’t want to look at them. But I had to.”

Niiyama and her eldest sister had rushed to the city to search for their father, Mitsugi, who worked in a bank located just 1km from the hypocentre. They had been evacuated to a neighbourhood just outside the city, but knew something dreadful had happened in Hiroshima when they saw trucks passing their temporary home carrying badly burned victims.

As Hiroshima prepares to mark 80 years since the city was destroyed in the world’s first nuclear attack, the 90-year-old is one of a small number of hibakusha – survivors of the atomic bombings – still able to recall the horrors they witnessed after their home was reduced to rubble in an instant.

At 8:15am on 6 August, the Enola Gay, a US B-29 bomber, dropped a nuclear bomb on the city. “Little Boy” detonated about 600 metres from the ground, with a force equivalent to 15,000 tonnes of TNT. Between 60,000 and 80,000 people were killed instantly, with the death toll rising to 140,000 by the end of the year as victims succumbed to burns and illnesses caused by acute exposure to radiation.

Three days later, the Americans dropped a plutonium bomb on Nagasaki, killing 74,000. And on 15 August, a demoralised Japan surrendered, bringing an end to the second world war.

Niiyama, one of four sisters, never found her father or his remains, which were likely incinerated along with those of his colleagues. “My father was tall, so for a long time whenever I saw a tall man from behind, I would run up to him thinking it might be him,” she says. “But it never was.”

With the number of people who survived the bombing and witnessed its immediate aftermath dwindling by the year, it is being left to younger people to continue to communicate the horrors inflicted on Hiroshima and Nagasaki.

For decades Niiyama, who is a registered hibakusha, said nothing of the trauma she had suffered as a schoolgirl, not even to members of her own family. “I didn’t want to remember what had happened,” she says. “And many hibakusha stayed quiet as they knew they might face discrimination, like not being able to marry or find a job. There were rumours that children born to hibakusha would be deformed.”

It was only when her granddaughter, Kyoko Niiyama, then a high school student, asked her about her wartime experiences that Niiyama broke her silence.

“When my children are older, they’ll naturally ask about what happened to their grandmother,” says the younger Niiyama, 35, a reporter for a local newspaper and the mother of two young children. “It would be such a shame if I wasn’t able to tell them … that’s why I decided to ask my grandmother about the bomb.”

She is one of a growing number of people in Hiroshima and Nagasaki studying to become “family successors” – a local government initiative that certifies the descendants of first-generation hibakusha to record and pass on the experiences of the only people on earth to have lived through nuclear warfare.

“Now that the anniversary is approaching, I can talk to her again,” Kyoko says. “This is a really precious time for our family.”

‘I don’t want to think about that day’

Last year, survivors of the Hiroshima and Nagasaki attacks won recognition for their campaign to rid the world of nuclear weapons when Nihon Hidankyo – a nationwide network of hibakusha – was awarded the Nobel peace prize.

But survivors face a race against time to ensure that their message lives on in a world that is edging closer to a new age of nuclear brinkmanship.

The world’s nine nuclear states are spending billions of dollars on modernising, and in some cases expanding, their arsenals. The Russian president, Vladimir Putin, has refused to rule out the use of tactical nuclear weapons in his war against Ukraine, and last week a veiled nuclear threat by the country’s former leader, Dmitry Medvedev, prompted Donald Trump – who had earlier compared US strikes on Iran’s nuclear facilities to the Hiroshima and Nagasaki attacks – to claim that he had moved two nuclear submarines closer to the region. North Korea’s development of nuclear weapons continues unchecked.

“The hibakusha have spent their lifetimes courageously telling their stories again and again, essentially reliving their childhood traumas – to make sure the world learns the reality of what nuclear weapons actually do to people and why they must be abolished, so that no one else goes through what they have suffered,” says Melissa Parke, executive director of the International Campaign to Abolish Nuclear Weapons.

“These brave hibakusha deserve to have their decades of campaigning vindicated and to witness the elimination of nuclear weapons in their lifetimes. This would provide some nuclear justice.”

The number of registered survivors of both attacks fell to just below 100,000 this year, according to the health ministry, compared with more than 372,000 in 1981. Their average age is 86. Just one of the 78 people confirmed to have been within 500 metres of the hypocentre of the blast in Hiroshima is still alive – an 89-year-old man.

On the eve of the anniversary, the ministry said it would no longer conduct a survey every 10 years to assess the living conditions and health of hibakusha, saying it wanted to “lessen the burden” on ageing survivors.

Niiyama, who struggles to walk, will watch Wednesday’s ceremony at home and pause to remember her father, whose memory is represented by a teacup he used that was retrieved from the devastation.

“I don’t like the month of August,” she says. “I have nightmares around the anniversary. I don’t want to think about that day, but I can’t forget it. But I’m glad I still remember that I’m a hibakusha.”

Niiyama, who struggles to walk, will watch Wednesday’s ceremony at home and pause to remember her father, whose memory is represented by a teacup he used that was retrieved from the devastation.

August 6, 2025 Posted by Christina Macpherson | history, Japan | Leave a comment

Tepco ordered to pay ¥100 million in damages over 2011 disaster

Japan Times 30th July 2025

The Tokyo District Court ordered Tokyo Electric Power Company Holdings on Wednesday to pay about ¥100 million ($675,000) in damages over the 2011 accident at its Fukushima No. 1 nuclear power plant.

Presiding Judge Masahiko Abe ordered the payment mainly as compensation for damage to property and consolation money for life during evacuation while dismissing the claim against the state.

In the lawsuit, Katsutaka Idogawa, 79, former mayor of Futaba, a town in Fukushima Prefecture, blamed the central government and Tepco for their inadequate handling of the accident, arguing that it led to his exposure to radiation…………………………. (Subscribers only) https://www.japantimes.co.jp/news/2025/07/30/japan/crime-legal/tepco-ordered-to-pay-damages-nuclear-disaster/

August 4, 2025 Posted by Christina Macpherson | Fukushima continuing, Legal | Leave a comment

TEPCO logs net loss in April-June on Fukushima plant cleanup.

The company booked an extraordinary loss of 903 billion yen, as it prepares for the removal of nuclear fuel debris

August 1, 2025 (Mainichi Japan), https://mainichi.jp/english/articles/20250801/p2g/00m/0bu/008000c

TOKYO (Kyodo) — Tokyo Electric Power Company Holdings Inc. said Thursday it posted a net loss of 857.69 billion yen ($5.8 billion) for the April-June period, pressured by a special loss related to decommissioning work at its Fukushima Daiichi nuclear power plant.

The second largest quarterly loss since the 2011 nuclear crisis is a sharp deterioration from a profit of 79.24 billion yen in the same period a year earlier.

Operating profit rose 2.9 percent to 64.70 billion yen in the quarter on sales of 1.43 trillion yen, down 4.5 percent.

The company booked an extraordinary loss of 903 billion yen, as it prepares for the removal of nuclear fuel debris, considered the most challenging phase of the decommissioning work.

“We are not expecting any big spending over the next three years and (the special loss) won’t be a problem for our decommissioning work,” TEPCO vice president Hiroyuki Yamaguchi said at a press conference.

TEPCO said Tuesday the full-scale removal of melted fuel debris, initially set for the early 2030s, will be delayed to fiscal 2037 or later, raising concerns that its target of completing the work to scrap the power plant by 2051 will become increasingly difficult to meet.

The company said it has about 700 billion yen earmarked for future demolition work.

August 3, 2025 Posted by Christina Macpherson | business and costs, Japan, wastes | Leave a comment

Debris removal at Fukushima nuclear plant pushed back to 2037 or later

30 July 25, https://www.japantimes.co.jp/news/2025/07/30/japan/fukushima-nuclear-plant-debris-removal/

Full-scale removal of nuclear fuel debris from the No. 3 reactor of Tokyo Electric Power Company Holdings’ crippled Fukushima No. 1 nuclear power plant will not start before fiscal 2037, officials said Tuesday.

The removal was previously planned to begin in the early 2030s. This delay may push the completion of the plant’s decommissioning process beyond the target year of 2051 set by the government and Tepco.

The new timeline for the work was announced by Tepco and Nuclear Damage Compensation and Decommissioning Facilitation, or NDF, at separate news conferences. They determined that preparations for the work, such as the demolition of an adjacent building, will take about 12 years to 15 years.

“We aren’t in a situation where we should deny (the feasibility of) the decommissioning target,” said Akira Ono, head of Tepco’s in-house company in charge of the decommissioning work. “We remain committed to the goal of completing (the decommissioning process by 2051.)”

A total of 880 metric tons of debris, or a mixture of melted nuclear fuel and reactor structures, is believed to be in the No. 1 to No. 3 reactors at the nuclear plant, which suffered a triple meltdown following the March 2011 massive earthquake and tsunami.

Tepco began to extract debris from the No. 2 reactor on a trial basis last year, and has collected a total of about 0.9 gram so far.

According to Tepco and the facilitation organization, debris removal will be carried out using a combination of what is known as the nonsubmerged method, in which the debris is collected from the air, and what is called the filling and solidification method, which involves pouring a filling agent into the reactor and solidifying it.

A small hole will be opened in the upper part of the reactor building to insert a device that will crush the debris into fine pieces, while a filling agent will be injected as needed. The debris will be collected using a device inserted from the side of the building.

Tepco and the organization said demolishing a waste treatment building on the north side of the No. 3 reactor is necessary to ensure work safety and create space for new equipment. They also said that necessary facilities need to be built in the upper part of the reactor building, and such preparations are expected to take about 12 years to 15 years.

August 1, 2025 Posted by Christina Macpherson | Fukushima continuing, wastes | Leave a comment

Atomic bomb survivors in Japan fear nuclear weapons could be used again: poll

Newly released survey shows close to 70 percent of survivors fear a resurgence in nuclear risks as Japan readies for the 80th anniversary of Hiroshima and Nagasaki.

14 July 25 https://trt.global/world/article/0c8b4e3aec45

Nearly 70 percent of atomic bomb survivors in Japan believe nuclear weapons could be used again, citing growing global tensions, including Russia’s war in Ukraine and North Korea’s weapons development, a survey by Kyodo News Agency revealed on Sunday, ahead of the 80th anniversary of the US atomic bombings.

Around 1,500 survivors took part in the survey, with 68.6 percent saying the risk of nuclear weapons being used again is increasing.

Some 45.7 percent of respondents said they “cannot forgive” the US for the bombings, while 24.3 percent said they have “no special feelings” and 16.9 percent said they “did not know.”

This year marks 80 years since the US dropped atomic bombs on Hiroshima and Nagasaki in western Japan near the end of World War II.

On August 6, 1945, the US dropped an atomic bomb on Hiroshima, killing an estimated 140,000 people.

A second bomb was dropped on Nagasaki three days later, resulting in about 70,000 additional deaths.

Japan surrendered on August 15, 1945, officially marking the end of World War II.

July 14, 2025 Posted by Christina Macpherson | Japan, public opinion | Leave a comment

Tepco plans to move spent nuclear fuel from Fukushima to Mutsu facility

Tokyo Electric Power Company Holdings (Tepco) suggested Monday that it
plans to transfer spent nuclear fuel from its Fukushima No. 1 nuclear power
plant to an interim storage facility in the city of Mutsu in Aomori
Prefecture. The plan was included in a medium- to long-term program for the
facility, presented to Aomori Gov. Soichiro Miyashita by Tepco President
Tomoaki Kobayakawa at a meeting in the Aomori Prefectural Government office
the same day.

Spent nuclear fuel stored at the plant’s No. 5 and No. 6
reactors, a joint storage pool and the Fukushima No. 2 plant at the time of
the March 2011 nuclear meltdown at the No. 1 plant is set to be transferred
to the Mutsu facility.

Japan Times 8th July 2025, https://www.japantimes.co.jp/news/2025/07/08/japan/tepco-move-mutsu/

July 12, 2025 Posted by Christina Macpherson | Japan, wastes | Leave a comment

Nuclear comeback? Japan’s plans to restart reactors hit resistance over radioactive waste

The Japanese government wants to turn its nuclear power
stations back on – but some local residents and Indigenous Ainu people
don’t want nuclear waste stored near them. Fourteen years after the
Fukushima disaster, Japan is restarting its nuclear reactors – and two
wind-blown near-deserted fishing villages on the northern island of
Hokkaido could be the destination for all their radioactive waste. But,
while some residents of Suttsu and Kamoenai welcome the government money
that volunteering to store the waste will bring, others are fiercely
opposed due to fears that the nuclear waste will contaminate their land and
water. The controversy could delay Japan’s goals to use carbon-free
nuclear energy to replace electricity generation from expensive imported
fossil fuels and cut greenhouse gas emissions on the way to net zero by
2050.

Climate Home News 6th July 2025, https://www.climatechangenews.com/2025/07/06/nuclear-comeback-japans-plans-to-restart-reactors-hit-resistance-over-radioactive-waste/

July 12, 2025 Posted by Christina Macpherson | Japan, politics | Leave a comment

China lifts a nearly 2-year ban on seafood from Japan over Fukushima wastewater

China has reopened its market to seafood from Japan after a nearly
two-year ban over the discharge of slightly radioactive wastewater from the
tsunami-destroyed Fukushima nuclear power plant. A notice from the customs
agency said the ban had been lifted Sunday and that imports from most of
Japan would be resumed. The ban, imposed in August 2023, was a major blow
to Japan’s fisheries industry. China was the biggest overseas market for
Japanese seafood, accounting for more than one-fifth of its exports.

Daily Mail 30th June 2025, https://www.dailymail.co.uk/wires/ap/article-14859601/China-lifts-nearly-2-year-ban-seafood-Japan-Fukushima-wastewater.html

July 1, 2025 Posted by Christina Macpherson | business and costs, China, Japan | Leave a comment

Govt Eyes Reuse of Fukushima Soil at PM’s Office

Tokyo, May 23 (Jiji Press) https://jen.jiji.com/jc/eng?g=eco&k=2025052300665

–The Japanese government is considering reusing soil removed from the ground during radiation decontamination work after the 2011 nuclear reactor meltdowns in Fukushima Prefecture in the grounds of the prime minister’s office in Tokyo, informed sources have said.
   The government hopes to promote public understanding over the reuse of the soil from the decontamination work in the northeastern Japan prefecture, home to Tokyo Electric Power Company Holdings Inc.’s disaster-stricken Fukushima No. 1 nuclear power plant.
   The move came after planned pilot projects for using the soil in Tokyo and its northern neighbor, Saitama Prefecture, have stalled due to opposition from local residents.
   The government plans to compile a basic policy on the recycling and final disposal of the soil shortly, including its use at the prime minister’s office. It also plans to draw up a specific road map by around this summer.
   Some 14 million cubic meters of the soil from the decontamination work is currently stored at interim facilities in the Fukushima towns of Okuma and Futaba, where the TEPCO plant is located.

May 24, 2025 Posted by Christina Macpherson | Fukushima continuing, wastes | Leave a comment

The Challenge to Japan’s Nuclear Restart

The story of Japan’s nuclear village should serve as a
cautionary tale for other places engaged in debates on nuclear energy.

Nuclear power is a key plank in Japan’s national energy vision, but 14 years after the Fukushima meltdown, the restart process hasn’t overcome the central problem.

By Zhuoran Li, May 03, 2025

The restart of nuclear power plants is based on the Sixth Basic Energy
Plan, approved by the Cabinet in October 2021. Given that the trauma of the
2011 Fukushima nuclear disaster remains vivid in the public consciousness,
the government has adopted a cautious, step-by-step approach. The
reactivation of reactors must first be approved by the Nuclear Regulation
Authority under the new regulatory standards. Subsequently, the restart can
proceed only with the consent of local governments and residents.

The government hopes that its safety-first approach will reassure local
communities and alleviate their concerns about nuclear energy. In addition,
efforts are underway to develop and construct next-generation innovative
reactors. These include plans to replace decommissioned nuclear plants with
advanced models, contingent on securing local support.

While maintaining the effective 60-year operational limit, the government is also promoting a policy that excludes certain shutdown periods from being counted toward
that limit. The story of Japan’s nuclear village should serve as a
cautionary tale for other places engaged in debates on nuclear energy. For
example, Taiwan faces many of the same trade-offs as Japan. On one hand,
Taiwan is an energy importer with a vulnerable supply. On the other hand,
it is prone to earthquakes. As a result, nuclear energy has become a
central political debate.

The Diplomat 3rd May 2025,
https://thediplomat.com/2025/05/the-challenge-to-japans-nuclear-restart/

May 6, 2025 Posted by Christina Macpherson | Japan, safety | Leave a comment

Robotic arm struggles to take fuel sample from Fukushima plant

By KEITARO FUKUCHI/ Staff Writer, April 28, 2025, https://www.asahi.com/ajw/articles/15704793

A narrow, attic-like space lies directly below the No. 5 reactor at the Fukushima No. 1 nuclear power plant, showing the difficult route a robotic arm must take to collect samples of melted fuel debris in a sister reactor.

The robotic arm is 22 meters long, weighs 4.6 tons and has 18 articulatable joints.

It has been developed to retrieve samples from the No. 2 reactor of Tokyo Electric Power Co.’s Fukushima No. 1 plant—which was crippled when the 2011 Great East Japan Earthquake and tsunami triggered a nuclear disaster at the facility.

To this day, an estimated 880 tons of melted fuel debris remain in the No. 1 through No. 3 reactors, and recovering this material is considered the most challenging phase in the long decommissioning process.

After more than six years of development using taxpayer money and undergoing numerous setbacks, the robotic arm may go on its first real debris retrieval mission later this fiscal year—or face being scrapped.

“The latest attempt may prove a failure since numerous trials have produced no successful outcomes so far,” said a nuclear industry insider. “The robot arm might be left to gather dust without ever being used.”

News reporters were given a tour in January of the crippled power plant’s No. 5 reactor, which is the same model and reportedly has the same dimensions as the No. 2 reactor, to see the route the arm must take if it is to succeed.

THE MISSION

To reach the debris, the arm will have to be navigated—by remote control—through the same narrow route at the No. 2 reactor that the reporters traversed at its twin.

The first step will be to carefully insert the arm, which is 40 centimeters tall, through an opening with an inner diameter of just 55 cm.

Once inside the 1.5-meter-tall space directly under the reactor, the approximately 4-meter-long tip of the arm will be slowly rotated and lowered to reach the fuel debris at the bottom of the containment vessel.

“Adjusting the joints’ angles is particularly difficult,” said a TEPCO public relations representative. “Even a single error can cause the device to hit its surroundings.”

TRIAL AND ERROR

The robotic arm has been under development since fall 2018 by Mitsubishi Heavy Industries Ltd. and a British company from the nuclear power industry. As much as 7.8 billion yen ($53.1 million) in taxpayers’ money has been invested in the arm and related projects.

However, the project has faced numerous setbacks.

The government and TEPCO initially planned to debut the arm in a debris retrieval test in 2021, but the device was unable to move with the necessary precision, causing delays.

When the first retrieval test was finally undertaken in November 2024, a simpler device with a solid track record in past applications was used instead. The same device was used in the second retrieval test earlier this month—while revisions on the robotic arm continued.

Because the arm’s weight is supported at its base, the device tends to bend and move unsteadily when extended.

“They are working hard to carry out this difficult procedure under particularly challenging conditions,” said Hajimu Yamana, president of the Nuclear Damage Compensation and Decommissioning Facilitation Corp. (NDF), which serves as an adviser on the decommissioning work.

As the arm’s development dragged on for more than half a decade, new problems arose in and after August 2024.

Disconnection of motor cables that had deteriorated over time was detected, as was a failure in the arm’s obstacle removal mechanism.

In December that year, the robotic arm came into contact with a model of the containment vessel during a test. However, it later safely passed through the opening without encountering any obstructions after its operators fine-tuned the insertion point.

“New issues arise each time a test is conducted,” lamented Yusuke Nakagawa, a TEPCO group manager involved in the project. “We just have to address them one by one again and again.”

TEPCO began dismantling part of the robotic arm in February to examine the deteriorated cable. The inspection is expected to take three to four months, and the arm will likely undergo additional operational tests after that.

THE FUTURE

For now, TEPCO plans to put the robotic arm to practical use at the site in the latter half of fiscal 2025.

“The final decision (on whether to actually use the arm on site) will be made after taking into account the results of the envisioned operational tests,” said Akira Ono, president of TEPCO’s Fukushima Daiichi Decontamination and Decommissioning Engineering Co.

The future of the robotic arm is still unclear given that its official introduction has already been delayed four times.

Officials involved are expressing a growing sense of alarm.

Toyoshi Fuketa, an ex-chairman of the Nuclear Regulation Authority, calls for reviewing the current plan.

“Never changing a plan once it has been decided upon, even if it does not work properly, is a bad habit of Japan,” he noted. “People should have the courage to back down at times (by giving up on the robotic arm).”

April 30, 2025 Posted by Christina Macpherson | Fukushima continuing, wastes | Leave a comment

The Conservative Argument Against Nuclear Power in Japan

It has been said that nuclear power stations are like nuclear weapons directed at your own country. I couldn’t agree more.

Getting rid of these “nuclear weapons directed at our own country” will not require huge defense spending or difficult diplomatic negotiations. All that is required is the ability to look square at the facts, and a conservative mindset determined to protect our rich and productive land and pass it on to the next generation.

Higuchi Hideak, Apr 15, 2025, https://www.nippon.com/en/in-depth/d01111/

A Devastating Loss of Territory

“Conservatism is essentially realism. A conservatism that refuses to confront reality is as worthless as a progressivism without ideals.”

This is how I opened my Hoshu no tame no genpatsu nyūmon (Nuclear Power: An Introduction for Conservatives), which came out last summer. In the book, I tried to bring attention to the contradictions inherent in the policies of the Liberal Democratic Party: a party that claims to support conservative values and uphold the ideals of patriotism but nevertheless advocates that Japan should continue or increase its reliance on nuclear power, even in the aftermath of the Fukushima disaster.

In the book, I made three main points. First, nuclear power is fundamentally incompatible with conservatism and patriotism. Second, nuclear power stations are inherently vulnerable to earthquakes, for structural reasons. And third, nuclear power stations are also vulnerable from a national security perspective.

The disaster at the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Station in March 2011 led to the evacuation of more than 150,000 people. More than 20,000 are still not able to return to their homes even today. And the state of emergency declared shortly after the disaster has still not been lifted, 14 years later.

In Fukushima Prefecture, evacuation orders are still in effect across more than 300 square kilometers, in what the government has designated as “closed to inhabitation indefinitely.” This is in spite of the fact that the annual safety limits for radiation exposure among the general population were lifted from 1 millisievert to 20 millisieverts. An area of more than 300 square kilometers—equivalent to the size of Nagoya, one of Japan’s key economic centers—is still effectively under evacuation orders. The country has effectively lost territory 50 times larger than the Senkaku Islands in Okinawa Prefecture, controversially claimed by China and the frequent focus of national security anxiety. As if this weren’t bad enough, more than 300 young people have been diagnosed with childhood thyroid cancer, a condition that would normally be expected to affect only around one in a million. Many of these have been serious cases requiring invasive surgery.

When I sat as presiding judge in the case brought before the Fukui District Court to stop the planned reactivation of the Ōi Nuclear Power Station, operated by the Kansai Electric Power Company, the argument put forward by the Liberal Democratic Party (then newly returned to power) and the business lobby was that shutting down nuclear plants would force Japan to import vast amounts of oil and natural gas to fuel thermal power stations. This would result in a massive outflow of the nation’s wealth and lead to national impoverishment.

On May 21, 2014, the court handed down its verdict. Even if shutting down the plant did lead to a trade deficit, the court rejected the idea that this would represent a loss of national wealth. True national wealth, the court held, consists of rich and productive land—a place where people can put down roots and make a living. The risk of losing this, and being unable to recover it, would represent a more serious loss of national wealth. Compare the arguments of the LDP and economic business lobby with the decision of the Fukui District Court. Which represents true conservatism, unafraid to look squarely at the facts about nuclear disasters? Which best represents the true spirit of patriotism?

Disaster Caused by a Power Failure

Let’s consider a few of the characteristics of nuclear power stations. First, they must be continuously monitored and supplied with a constant flow of water to cool the reactor. Second, if the supply of electricity or water is interrupted, there is the risk of an immediate meltdown. A serious accident could potentially mean the end of Japan as a nation.

The accident at Fukushima Daiichi came perilously close to rendering much of the eastern part of Japan uninhabitable. Yoshida Masao, the director in charge at the time, feared that radioactive fallout would contaminate all of eastern Japan when it looked as though the containment building at the Unit 2 reactor would rupture after venting became impossible. The chair of the Japan Atomic Energy Commission also expected it would be necessary to evacuate the population from a 250-kilometer radius of the plant, including Tokyo.

The accident at Fukushima did not happen because the reactor was damaged directly by the earthquake or tsunami. The initial earthquake interrupted the external supply of electricity, and the tsunami that followed cut off the emergency supply as well. Essentially, a power failure made it impossible to cool the reactor, and this was enough to trigger a catastrophe.

These characteristics mean that the resilience of nuclear power stations depends not on how physically robust the reactors and containment buildings are, but on the dependability of the electricity supplied to them. Nuclear power plants in Japan are designed to be able to withstand seismic activity between 600 to 1,000 gals (a gal being a unit of acceleration used in gravimetry to measure the local impact of an earthquake). But earthquakes over 1,000 gals are not unusual in Japan, and some have exceeded 4,000 gals. For this reason, some construction companies build housing that is designed to withstand seismic shocks up to 5,000 gals.

There are only 17 fully constructed nuclear power stations across the country. Six earthquakes exceeding the safety standards have already occurred at four of these: Onagawa, Shika, Kashiwazaki-Kariwa, and Fukushima Daiichi (twice each at Onagawa and Shika). Japan experiences more earthquakes than any other country on earth. Although the country accounts for just 0.3% of the world’s landmass, more than 10% of all the world’s earthquakes happen here. Despite the inherent dangers, there are 54 nuclear reactors along the coasts, around 10% of the world’s total.

Since it is impossible to forecast what scale of earthquake might hit a given site in an earthquake-prone country like Japan, construction companies operate on the principle that houses should be able to withstand seismic events equivalent to the strongest earthquake on record in the past.

The government ratified the Seventh Strategic Energy Plan at a cabinet meeting in February this year. This latest iteration of the plan removed references to an ambition to reduce the country’s dependence on nuclear power as much as possible, and signaled a clear intention to restore nuclear power to a more prominent position in the country’s energy strategy. Despite this, the seismic planning standards for nuclear power stations still assume that it is possible to accurately predict the maximum size of any earthquake that will hit in the future by analyzing past seismic data and running a site assessment of local geotechnical conditions. Whose position demonstrates better scientific judgement and a more realistic assessment of the facts—the government’s or the construction companies’?

Why Europe’s Biggest Nuclear Power Plant Fell into the Hands of the Enemy

TEPCO was a huge company, with annual revenue of around ¥5 trillion and a profit margin of 5%, meaning the company was making ¥250 billion every year. But the economic damages from the Fukushima accident came to at least ¥25 trillion, equivalent to 100 years in revenue for the company. What can we say about an approach to electricity generation in which a single accident can wipe out a century’s worth of revenue and essentially bankrupt a huge company like TEPCO? It is an energy source that is not just cost-ineffective but unsustainable.

For example, it is estimated that if an accident on a similar scale happened at the Tōkai Daini Nuclear Power Station in Ibaraki Prefecture, it would cause damage worth ¥660 trillion (compared to the national government budget of ¥110 trillion). As head of the Fukushima plant, Yoshida was resigned to losing the containment building of the unit 2 reactor to an explosion. He was saved by a “miracle” when a weakness somewhere in the structure of the building allowed pressure to escape and a rupture was avoided. Without this lucky intervention, it is estimated that the economic damages might have reached ¥2.4 quadrillion.

These figures make clear that the problem of nuclear power is not merely an energy issue. It has profound implications for national survival, and should be regarded as a national security priority. Russia’s war in Ukraine has provided a stark reminder of the seriousness of this threat. The Zaporizhzhia station on the Dnieper River is the largest nuclear power plant in Europe. A threat from Russia to attack it was enough to persuade Ukraine to hand over the plant to Russian control. If the plant really had been attacked, it might have caused a crisis with the potential to lay waste to large parts of Eastern Europe.

It has been said that nuclear power stations are like nuclear weapons directed at your own country. I couldn’t agree more. And in Japan we have 54 of these reactors bristling our shores, all but unprotected against earthquakes, potential enemies, and terrorist attacks. The LDP government mocks those who oppose Japan’s holding the offensive capability to attack enemy bases and argue for an exclusively defense-oriented posture as indulging in “flower garden” thinking. At the same time, the party is blind to the fact that nuclear power stations represent this country’s biggest national defense vulnerability.

In my previous books and articles, I addressed the legal issues involved in nuclear power. In my Nuclear Power: An Introduction for Conservatives, I made clear that my own political stance is conservative. I was prepared for a backlash from progressives, who make up the bulk of the antinuclear movement, but in fact I received no pushback from that quarter all. In fact, I was taken aback by the resounding support I received.

Most of the criticism came from supposed conservatives who were apparently determined to discredit my sincere intentions and grumbled that it was unseemly for a former judge to be sticking his nose into politics. On Amazon, my reviews were flooded with apparently coordinated personal attacks and slander. But I am still convinced that true and fair-minded conservatives will understand my true intentions.

Geologists acknowledge that it is simply not possible to accurately predict earthquakes with today’s science. A huge earthquake could strike tomorrow, causing a catastrophe at one of the nation’s nuclear power stations that could wipe out or render inhabitable large parts of the country. My aim is simply to make as many people as possible aware of this terrifying fact.

(Originally written in Japanese. )

April 18, 2025 Posted by Christina Macpherson | Japan, politics, Reference | Leave a comment

Robot starts 2nd mission to retrieve debris at Fukushima nuclear plant

Apr. 16 , By Mari Yamaguchi, TOKYO, https://japantoday.com/category/national/robot-starts-2nd-mission-to-retrieve-debris-at-fukushima-nuclear-plant

A remote-controlled robot on Tuesday embarked on its second mission to retrieve tiny bits of melted fuel debris from inside a damaged reactor at the Fukushima nuclear plant that was wrecked by a tsunami 14 years ago.

The mission, which follows the first such debris retrieval in November, is aimed at eventually developing the technology and robots needed for a larger scale cleanup of the plant, destroyed by the earthquake and tsunami in March 2011.

The extendable “Telesco” robot carries cameras and a tong to grip tiny nuggets of radioactive debris. It entered the No. 2 reactor’s primary containment vessel Tuesday, according to Tokyo Electric Power Company.

This time, the company aims to send the robot further into the containment vessel to get a sample from an area closer to the center where more melted fuel is believed to have fallen.

It is expected to take several days before the front tip of the robot reaches the targeted area, where it will lower a device carrying a tong and camera in a fishing-rod style.

That first sample retrieval in November, despite a number of mishaps, was a crucial step in what will be a daunting, decades-long decommissioning that must deal with at least 880 tons of melted nuclear fuel that has mixed with broken parts of internal structures and other debris inside the three reactors ruined in 2011.

After a series of small missions by robots to gather samples, experts will determine a larger-scale method for removing melted fuel, first at the No. 3 reactor, beginning in the 2030s.

Experts say the huge challenge of decommissioning the plant is just beginning, and that the work could take more than a century.

April 17, 2025 Posted by Christina Macpherson | Fukushima continuing, wastes | Leave a comment

« Previous Entries Next Entries »