The No. 3 reactor of the Shimane nuclear power plant stands in the foreground, with the No. 1 and No. 2 reactors in the background.
June 2, 2018
The 2011 Fukushima nuclear disaster provided graphic evidence of the lasting and far-reaching damage that can result when this technology goes askew.
Electric utilities that operate nuclear power plants have a duty to respond with utmost sincerity to safety concerns among local governments and communities, especially cities and towns within 30-kilometer emergency planning zones. Utilities should treat local governments within the zones, which are required to develop emergency evacuation plans under stringent new regulations introduced after the March 2011 emergency, equally as the governments in nuclear host communities.
Chugoku Electric Power Co. recently took the first step toward the start of operations of the Shimane nuclear power plant’s new reactor, whose construction was halted following the Fukushima catastrophe.
The utility, based in Hiroshima, asked the Shimane prefectural government and the Matsue city government to approve its application to the Nuclear Regulation Authority (NRA) for safety screening of the No. 3 reactor under the new regulatory standards.
The No. 3 reactor was close to completion when the Fukushima No. 1 nuclear power plant went in a triple meltdown. Work to install the necessary safety measures is expected to finish in the first half of 2019.
This facility could become the first new nuclear reactor in Japan to start operation after the Fukushima disaster, an event that triggered tighter safety standards for nuclear plants.
The new reactor, if cleared for operation, will be in service until around 2060 under the principle that imposes a 40-year limit on the operational life of a reactor.
The reactor is part of a complex that has the distinction of being the only nuclear power plant located in the capital of a prefecture.
Within 30 km of the plant lie three other cities in Shimane as well as the cities of Sakaiminato and Yonago in neighboring Tottori Prefecture. Some 470,000 people live in the 30-km zone.
In 2011, authorities in Tottori Prefecture and the two cities signed an agreement with Chugoku Electric Power that commits the utility to put top priority on the safety of local residents in operating the plant.
These local governments have been demanding that the utility apply the procedures for obtaining consent for reactor operations from the Shimane and Matsue governments also to the local governments in Tottori Prefecture.
In April this year, the prefectural and municipal governments in Tottori formed a joint task force to assess the safety of the new reactor with the help of the utility.
Chugoku Electric Power’s move to seek the consent of only the Shimane prefectural government and the Matsue city government to start the process of bringing the reactor online has caused “considerable confusion” among the local communities in Tottori Prefecture, according to Tottori Governor Shinji Hirai.
“I feel bewildered” at the way the utility is going ahead with the plan, Hirai said with obvious and justifiable discontent.
Safety agreements between nuclear plant operators and local governments generally require utilities to secure the advance consent of the local governments when new reactors are built or important changes are made to existing facilities. In most cases, however, the scope of the local governments covered is limited to the prefectures and municipalities where the plants are located.
But an agreement was reached this spring between Japan Atomic Power Co. (JAPC), the operator of the Tokai No. 2 nuclear power plant in Ibaraki Prefecture, and five surrounding municipalities that commits JAPC to seek approval from these municipalities within the 30-km zone before bringing its idled reactor back on stream. They include the city of Mito, as well as Tokai village, which hosts the nuclear plant, and the prefecture.
Some local governments around the Shimane nuclear plant are calling on Chugoku Electric Power to hold advance talks over the operation of the new reactor with all the six cities within the 30-km zone. The utility should treat all the local governments within the emergency planning zone like host communities.
When Kyushu Electric Power Co. moved to restart the No. 3 reactor at its Genkai nuclear power plant in Saga Prefecture, four of the eight municipalities in three prefectures located within the 30-km zone were up in arms over the plan. But the procedures for the restart went ahead after the town of Genkai, which hosts the plant, and Saga Prefecture gave their consent.
Shimane Governor Zenbe Mizoguchi has indicated his intention to listen to the opinions of all the surrounding local governments, including those in Tottori Prefecture. The Shimane and Matsue governments plan to propose this approach to their respective local assemblies. The case of the Genkai plant should serve as a cautionary tale for these local governments.
In the wake of Fukushima, Tomonobu Narita is at the forefront of a movement to withdraw money from banks that back environmentally harmful energy projects.
YOKOHAMA, Japan — Buddhist priest Tomonobu Narita admits he hadn’t thought much about energy policy until the Fukushima nuclear meltdown forced tens of thousands of people to flee their homes in 2011.
Now he’s at the forefront of a budding movement in Japan to withdraw money from banks that provide finance for environmentally harmful energy projects.
“I was taught about the idea of how changing your bank account can contribute to bettering the environment, and that was an enlightenment for me,” said Narita, the third-generation head priest of a temple in Yokohama, south of Tokyo.
The campaign to “divest” from fossil fuels such as coal has gained traction in the United States, Europe and Australia in recent years, but environmental activists are now targeting Japan. They see the country as crucial to the success of international efforts to address climate change.
On top of fossil fuels — which release greenhouse gases into the atmosphere when burned, contributing to global warming — campaigners here are working to oppose nuclear power.
While advocates of nuclear power say it can provide carbon emissions-free energy, critics say the overall dangers are too high.
Residents are still barred from returning to some of the towns closest to the Fukushima Daiichi nuclear power station, where three reactor meltdowns occurred after the March 2011 earthquake and tsunami disaster.
Most of the country’s nuclear plants remain offline amid safety checks and legal challenges.
Driven by concern about nuclear power, Narita recently shifted some of his temple’s funds to a financial firm that is rated as one of Japan’s 45 “earth-friendly” banks. This means the bank is not known to provide finance for the fossil fuel and nuclear sectors.
Narita told NBC News he planned to explain the decision to his counterparts in other temples, believing that “we need to be more mindful of what we’re blessed with.”
Tomonobu Narita is the head priest of Totsuka Zenryo Temple in Yokohama, Japan.
“That small action when combined [with the actions of others] leads to a bigger effect, so I hope for divestment to have that kind of spread in Japan,” he said during an interview at Totsuka Zenryo Temple.
In the next room, about 100 people gathered to hear from the veteran American climate campaigner Bill McKibben, who co-founded the global divestment and climate action movement known as 350.org and has organized rallies around the world.
McKibben described being jolted into action by a visit to Bangladesh more than a decade ago when he saw people die from dengue — a mosquito-borne viral illness that is projected to worsen in that country as the globe warms. McKibben said he viewed it as “very unfair” that Bangladesh would bear major impacts from climate change when it had not been the source of most of the world’s greenhouse gas emissions.
“They’re suffering from a problem that they didn’t cause, a problem that we caused,” McKibben said. “And so, when I went back to the United States, I decided that the time had come to fight — in a good, nonviolent, Buddhist peaceful way,” he quipped to the temple crowd.
Now, McKibben said, it was important for the divestment movement to spread to Japan “because Japanese banks are now the biggest lenders of money for coal projects around the world.”
Japan’s Mizuho provided an estimated $11.5 billion in loans to the world’s top coal-plant developers from January 2014 to September 2017, according to analysis published by BankTrack, a pro-renewable energy network. That led to Mizuho being assessed as the most prolific lender in that category, followed by another Japanese financial group, MUFG, in second place, while Sumitomo Mitsui Banking Corporation came in at fifth.
These banks have signaled that they are weighing their future lending criteria.
Mizuho said on its website that it was currently discussing the “best due diligence methods” for reducing environmental and social risks, while MUFG told investors it would strengthen its focus on financing renewable energy.
A spokesperson for Sumitomo Mitsui told NBC News: “Coal-fired thermal power generation is considered as a relatively low-cost power generation method; however, since we consider that the impact on climate change is significant, we are considering [reviewing] our current credit policy.”
Still, the number of ordinary people in Japan actively divesting from fossil fuels remains small: Just 146 individuals have so far reported divestments worth 568.2 million yen ($5.1 million) since the campaign launched late last year, according to 350.org Japan.
Takejiro Sueyoshi, a former senior banking executive who is now a special adviser to the United Nations Environment Program Finance Initiative, believes it will require strong government leadership for banks to take a more assertive step toward renewables.
“Many people are very well aware of this matter, but what they are saying is: ‘Personally I understand that, but under the current situation no Japanese government [has set] any new direction, new policy, new strategy.’”
This was because the Japanese business culture tended to be “government-oriented,” he explained. “When the Japanese central government says ‘do this,’ they follow. And if the Japanese central government does not say anything about something, no institutions or companies will [act].”
Some senior government figures, at least, seem to be paying attention. The foreign minister, Taro Kono, recently blasted his country’s lackluster embrace of renewable sources like wind and solar as “lamentable.”
Japan’s target for renewables to make up 22 percent to 24 percent of its overall energy mix by 2030 is low, Kono said in a speech in January. He pointed out that such technology already accounts for about a quarter of the total global energy mix, and there had been a “dramatic decrease” in the price of renewables.
“We have prioritized keeping the status quo for fear of change,” said Kono, whose climate advisory panel warned the following month that Japan was facing increasing scrutiny from other countries about its plans to build dozens of new coal-fired power plants.
As the government and experts continue to debate the best way forward in terms of policy, campaigners will step up their efforts to build community momentum for change.
Narita, the Buddhist priest, said he had not sought media attention for his decision to divest but simply wanted to do his part “to contribute to society.” The action is grounded in his beliefs.
“Right now the greenery that we have, the earth, the soil — everything is a product of the things that people who have come before us have left behind, so we can’t just treat those things carelessly,” Narita said.
Rather than pushing for a swift disarmament, the report suggests small, achievable steps, including a continued freeze on nuclear and ballistic missile tests and a shut-down of the enrichment facility at Yongbyon. It might take six to 10 years of phased concessions on both sides before the nuclear risk is substantially eliminated
A nuclear deal with North Korea would require unprecedented access to secret weapons sites, LA Times, By DAVID S. CLOUD, JUN 03, 2018
KL: All nuclear powers must denuclearise, Straits Times,Reme Ahmad, South-east Asia Editor , 3 June 18
Malaysia’s Defence Minister Mohamad Sabu said yesterday that his country supports the move to denuclearise the Korean peninsula, but that all the nuclear powers should be stripped of their nuclear arsenal in the future.
Malaysia is also hopeful for a good outcome for the June 12 summit in Singapore between United States President Donald Trump and North Korean leader Kim Jong Un, Mr Mohamad said in a media interview on the sidelines of the 17th Shangri-La Dialogue security conference.
“Malaysia is fully supportive of any commitment towards the denuclearisation of the Korean peninsula. The problem is why only Korea? Why only Iran?
“Why not America, China, Russia, India, Pakistan? So that is monopoly.
“We hope that denuclearisation must be (for) all.”
He said that it was “dangerous for the world” to have the US or North Korea threatening each other with their nuclear weapons.
He described the Trump-Kim summit as a good start towards denuclearisation.
“Whether the meeting will be successful or not, that is another matter, than the fact they would even meet,” said Mr Mohamad, who was sworn in as Defence Minister two weeks ago.
https://www.theguardian.com/environment/2018/mar/16/is-fukushima-doomed-to-become-a-dumping-ground-for-toxic-waste Despite promises of revitalisation from Japan’s government, seven years on from the nuclear disaster the area is still struggling This month, seven years after the 2011 Fukushima Daiichi reactor meltdowns and explosions that blanketed hundreds of square kilometres of northeastern Japan with radioactive debris, government officials and politicians spoke in hopeful terms about Fukushima’s prosperous future. Nevertheless, perhaps the single most important element of Fukushima’s future remains unspoken: the exclusion zone seems destined to host a repository for Japan’s most hazardous nuclear waste.
No Japanese government official will admit this, at least not publicly. A secure repository for nuclear waste has remained a long-elusive goal on the archipelago. But, given that Japan possesses approximately 17,000 tonnes of spent fuel from nuclear power operations, such a development is vital. Most spent fuel rods are still stored precariously above ground, in pools, in a highly earthquake-prone nation.
The Fukushima prefecture government is currently promoting a plan, dubbed The Innovation Coast, that would transform the unwelcoming region into a thriving sweep of high-tech innovation. Much of the development would be directed towards a “robot-related industrial cluster” and experimental zones like a robot test field.
The test field would develop robots tailored for disaster response and for other purposes on a course simulating a wide range of hurdles and challenges already well represented in Fukushima itself. Large water tanks would contain an array of underwater hazards to navigate, mirroring the wreckage-strewn waters beneath the Fukushima Daiichi plant, where a number of meltdown-remediating underwater robots have met a premature demise in recent years.
Elsewhere on the robot test field, dilapidated buildings and other ruins would serve as a proving ground for land-based disaster-response robots, which must navigate twisted steel rods, broken concrete and other rubble. Engineered runways and surrounding radiation-hit areas would serve as prime territory for testing parlous aerial drones for a range of purposes in various weather conditions – which would be difficult or impossible to achieve elsewhere in relatively densely populated Japan.
The planned site for the test field would link with a secluded test area about 13km south along the coast to coordinate test flights over the exclusion zone’s more or less posthuman terrain.
Naturally, unlike Fukushima’s human residents, robots would be oblivious to the elevated radiation levels found outside the Fukushima Daiichi facility. In addition, prefectural officials have suggested that the exclusion zone environs could play host to a range of other services that don’t require much human intervention, such as long-term archive facilities.
Proud long-time residents of Fukushima, for their part, see all this development as a continued “colonisation” of the home prefecture by Tokyo – a well-worn pattern of outsiders using the zone for their own purposes, as were the utility representatives and officials who built the ill-fated plant in the first place.
Years of colossal decontamination measures have scraped irradiated material from seemingly every forest, park, farm, roadside, and school ground. This 16 million cubic metres of radioactive soil is now stored in provisional sites in and around the exclusion zone, waiting to be moved to an interim storage facility that has hardly been started and for which nearly half of the land has not yet even been leased.
The state has promised to remove all the contaminated soil from Fukushima after 30 years, and government officials have been scrupulous in insisting that this will be the case – for soil. Yet in a nation with about 17,000 tonnes of highly radioactive spent fuel rods and no willing candidates for secure repositories, it is only a matter of time before it becomes possible for politicians to publicly back the idea of transforming the area around Fukushima Daiichi into a secure repository.
Government officials, including those tasked with nuclear waste storage, describe the quintessentially Japanese strategy of saki-okuri, or calculated postponement, in the context of nuclear waste storage. Such perception management is a subtle business, but by quietly and unrelentingly pushing back the day of reckoning – slowly changing the terms of debate – the broadly distasteful prospect of storing Japan’s most dangerous material in its most tragically maltreated region would become gradually less intolerable to Japanese sensibilities.
The expanse of Fukushima in and around the exclusion zone represents an already contaminated area with, since 2011, far fewer residents to protest against such plans. Such a rare opportunity for relatively unopposed intervention in a struggling area will surely prove irresistible to the nuclear lobby.
Fukushima has been marginalised, disenfranchised, and outmanoeuvred for decades. After all, the electricity from Fukushima Daiichi went straight to the capital, not to Fukushima itself, which bore the risks. Since 2011, Fukushima has been saddled with the staggering burden of the meltdown’s aftermath that, despite government PR, will encumber and stigmatise its citizens for at least several decades.
•Peter Wynn Kirby is a nuclear and environmental specialist at the University of Oxford
Japan’s divestment campaign pits Buddhist priest against banks In the wake of Fukushima, Tomonobu Narita is at the forefront of a movement to withdraw money from banks that back environmentally harmful energy projects.
by Daniel Hurst May.29.2018 NBC News, YOKOHAMA, Japan — Buddhist priest Tomonobu Narita admits he hadn’t thought much about energy policy until the Fukushima nuclear meltdown forced tens of thousands of people to flee their homes in 2011.
Now he’s at the forefront of a budding movement in Japan to withdraw money from banks that provide finance for environmentally harmful energy projects.
“I was taught about the idea of how changing your bank account can contribute to bettering the environment, and that was an enlightenment for me,” said Narita, the third-generation head priest of a temple in Yokohama, south of Tokyo.
The campaign to “divest” from fossil fuels such as coal has gained traction in the United States, Europe and Australia in recent years, but environmental activists are now targeting Japan. They see the country as crucial to the success of international efforts to address climate change.
On top of fossil fuels — which release greenhouse gases into the atmosphere when burned, contributing to global warming — campaigners here are working to oppose nuclear power.
While advocates of nuclear power say it can provide carbon emissions-free energy, critics say the overall dangers are too high.
Residents are still barred from returning to some of the towns closest to the Fukushima Daiichi nuclear power station, where three reactor meltdowns occurred after the March 2011 earthquake and tsunami disaster.
Most of the country’s nuclear plants remain offline amid safety checks and legal challenges.
Driven by concern about nuclear power, Narita recently shifted some of his temple’s funds to a financial firm that is rated as one of Japan’s 45 “earth-friendly” banks. This means the bank is not known to provide finance for the fossil fuel and nuclear sectors.
Narita told NBC News he planned to explain the decision to his counterparts in other temples, believing that “we need to be more mindful of what we’re blessed with.”
“That small action when combined [with the actions of others] leads to a bigger effect, so I hope for divestment to have that kind of spread in Japan,” he said during an interview at Totsuka Zenryo Temple. ………
Japan’s Mizuho provided an estimated $11.5 billion in loans to the world’s top coal-plant developers from January 2014 to September 2017, according to analysis published by BankTrack, a pro-renewable energy network. That led to Mizuho being assessed as the most prolific lender in that category, followed by another Japanese financial group, MUFG, in second place, while Sumitomo Mitsui Banking Corporation came in at fifth.
These banks have signaled that they are weighing their future lending criteria………
Takejiro Sueyoshi, a former senior banking executive who is now a special adviser to the United Nations Environment Program Finance Initiative, believes it will require strong government leadership for banks to take a more assertive step toward renewables. …….
Without doubt, the road ahead of TEPCO is a long one, beset with challenges greater than those faced to date. The Mid- and Long-Term Roadmap—the Japanese state-curated document outlining the decommissioning of Fukushima—envisions operations stretching a full 30-40 years into the future. Some have suggested it’s an optimistic target, others say that the plan lacks details on key, long-term issues such as permanent solid-waste storage beyond the onsite repository currently being employed. Certainly it is the case that key decisions remain. ……..
By all accounts, it is hard to gauge the costs for the Fukushima clean-up. Kohta told Ars that works completed to date have cost about 500.2 billion yen, or $4.7 billion—a tremendous sum, to be sure, but fractional compared to the estimate of 8 trillion yen ($74.6 billion) approved by the Japanese state last May for the complete decommissioning of Fukushima Daiichi.
THE REMEDIATION OF FUKUSHIMA —Remediating Fukushima—“When everything goes to hell, you go back to basics”ars Technica It may take 40 years for the site to appear like “a normal reactor at the end of its life.”WILLIAM STEEL –
Seven years on from the Great East Japan Earthquake of March 2011, Fukushima Daiichi nuclear power plant has come a long way from the state it was reduced to. Once front and center in the global media as a catastrophe on par with Chernobyl, the plant stands today as the site of one of the world’s most complex and expensive engineering projects.Beyond the earthquake itself, a well understood series of events and external factors contributed to the meltdown of three of Fukushima’s six reactors, an incident that has been characterized by nuclear authorities as the world’s second worst nuclear power accident only after Chernobyl. It’s a label that warrants context, given the scale, complexity, and expense of the decontamination and decommissioning of the plant.
How does a plant and its engineers move on from such devastation? The recovery initiatives have faced major challenges, constantly being confronted by issues involving radioactive contamination of everything from dust to groundwater. And those smaller issues ultimately complicate the remediation effort’s long-term goal: to locate and remove the nuclear fuel that was in the reactors……….
the severity of the accident is probably most keenly felt in the scale of the cleanup. The incident has necessitated the ongoing cleanup and decommissioning of the plant—something that Tokyo Electric Power Company (TEPCO), the plant’s owner and operator, is responsible for. Even though the plant is seven years into the cleanup and has accomplished a great deal, we won’t see a conclusion for decades yet. ……
Reactor investigations
While they’re now stable in terms of nuclear activity, Units 1-3 remain highly contaminated. As such, while the structural integrity of these buildings has been restored, relatively little work has been undertaken within them. (One notable exception is removal of contaminated water from condensers, completed last year.)
Over recent years, a variety of remotely operated devices and imaging technologies have performed investigations of these units. The intention has been to gather information on internal physical and radiological conditions of the PCVs—the heavily reinforced bell-shaped structures that host reactors. TEPCO wants, and needs, to understand what has happened inside. Some things are known: once melted, fuel mixed with structural materials including steel and concrete to form something known as corium. But precisely where the corium ended up, how much there is, and whether it’s submerged are just some of the questions in play.
The International Research Institute for Nuclear Decommissioning (IRID), which was established in April 2013 to guide R&D of technologies required for reactor defueling and decommissioning, is supporting TEPCO in seeking answers. IRID is composed of multiple stakeholders, including Japanese utilities and the major nuclear vendors Hitachi, Mitsubishi, and Toshiba.
Naoaki Okuzumi, senior manager at IRID, described for Ars the investigative approaches and technologies. Early work utilized Muon tomography, which Okuzumi described as “a kind of standard practice applied to each unit… to locate high density material (fuel) within PCVs.” It yielded low-resolution data on the approximate location of corium. But with pixels representing 25cm-square cross-sections, the information has been useful only in so far as validating computational models and guiding subsequent robotic investigations.
The latter task hasn’t been easy. In addition to the challenge of navigating the dark, cramped labyrinths of tangled wreckage left behind, TEPCO has had to contend with radioactivity—the high levels act something like noise in electronic circuits. The wreckage has made access a challenge, too, although varying points of ingress have been established for each PCV.
The circumstances mean that TEPCO hasn’t been able to simply purchase an off-the-shelf kit for these investigations. ”An adaptive approach is required because the situation of each PCV is different… there is no standard with investigating the PCVs by using robots,” said Okuzumi, describing an approach that has translated into devices being specially developed and built in response to conditions of each PCV.
But they’re making progress. As recently as January 2018, corium was identified for the first time inside Unit 2 using an enhanced 13m-long telescopic probe and a revised approach designed to overcome problems encountered during investigations in 2017. The situation was hardly easier at Unit 3, where the PCV is flooded to a depth of around 6.5m. Here, it took a remotely operated, radiation-shielded submersible called ‘Little Sunfish’ to locate corium in July 2017.
Altogether the investigations—featuring a litany of robotic devices—have revealed that little fuel remains in any of the cores of Units 1-3. In Unit 2, a large amount of corium is present at the bottom of the RPV; in Units 1 and 3, almost all fuel appears to have melted through the RPVs entirely and into the concrete floor of PCVs beneath. The information is crucial, as we’ll come to see, for future deconstruction work at the reactors, but it continues to be extended as investigations continue…………
the amount of contaminated water now being generated—a mix of groundwater, rainwater and water pumped into reactors for cooling—has decreased from about 520m3/day to about 140m3/day between last December and February. Even so, treating that amount of contaminated water is proving taxing.
Water treatment is happening at large-scale facilities that have been built onsite, including a multi-nuclide removal facility. Here, a so-called Advanced Liquid Processing System (ALPS) reduces concentrations of cesium isotopes, strontium, and other radionuclides to below legal limits for release. But one radionuclide remains: tritium……….
Without a feasible alternative for cleaning up the tritium, the (only) solution for ALPS-treated water has been storage. Well over a thousand tanks, each holding 1,200 cubic meters, now store tritium-laced water at the south end of the plant. ………
The ultimate plan for stored water is unknown; tritium has a half life of a dozen years, so physics won’t clean up the water for us. Some kind of controlled, monitored discharge—the likes of which is typical within the nuclear industry—is possible, according to Barrett. Indeed, the International Atomic Energy Agency has endorsed such a plan, which was proposed by the Atomic Energy Society of Japan in 2013. The plan involved diluting tritiated water with seawater before releasing it at the legal discharge concentration of 0.06MBq/L and monitoring to ensure that normal background tritium levels of 10Bq/L aren’t exceeded.
Discussions at both national and international levels would need to come first. Part of the difficulty here harkens back to societal dynamics surrounding risk and contamination: “In nuclear there is no such thing as absolute zero—sensitivity goes down to the atom. This makes discussion about decontamination or levels of acceptable contamination difficult………
Toward permanent solutions
In some sense, much of the restoration of order at Fukushima has been superficial—necessary but concerned with handling consequences more than root causes (see, TEPCO interactive timeline). Ultimately, Fukushima’s reactors must be decommissioned. Broadly, this work involves three phases: removing used fuel assemblies that are stored within ten-meter-deep spent fuel pools of each reactor building, management of melted-down reactors and removal of corium debris, and deconstruction of reactor buildings and the greater plant.
At Unit 4, spent fuel removal operations took around 13 months and concluded in December 2014. ……In all, 1,533 fuel assemblies were removed and transferred to a common spent fuel pool onsite.
Defueling of pools at Units 1 through 3, which suffered meltdowns, isn’t going to be as straightforward. For one, there’s some expectation of debris and circumstances requiring extraordinary removal procedures. “I wouldn’t be surprised if we find some structurally bent fuel assemblies caused by large pieces of concrete or steel,” said Barrett. Additionally, although radiation in Unit 3 has been reduced sufficiently to allow rotating shifts of workers to install defueling equipment, the already painstaking operations will have to be conducted remotely. The same is likely true for Units 1 and 2.
At Unit 3, the next in line for defueling, preparation is already well underway. In addition to decontamination and installation of shielding plates, TEPCO has removed the original fuel handling crane, which had fallen into the pool seven years ago, and installed a new fuel handling crane and machine. An indication of extraordinary containment methods being used, workers have built a domed containment roof at Unit 3. TEPCO’s Kohta told Ars, “Removal of spent fuel [at Unit 3] is scheduled to begin from around the middle of 2018;” meanwhile, Unit 1 is also in a preparatory stage and Unit 2 will be handled last.
Further down the line still, corium will have to be removed from melted-down reactors. It’s a daunting task, the likes of which has never been undertaken before. The reactors held varying, but known, amounts of uranium oxide fuel, about 150 tonnes each. But how much extra mass the fuel collected as it melted through reactor vessels is uncertain.
“At TMI there was exactly 93 tonnes in the reactor. Once we were done digging out fuel debris, we’d removed 130 tonnes. At Fukushima, I expect maybe a factor of five to ten more mass in core debris. It’s an ugly, ugly mess underneath the PCVs,” suggested Barrett.
High-powered lasers, drills and core boring technologies for cutting, and strong robotic arms for grappling and removing corium are already under development, according to IRID, but precise methodologies remain undecided……….
Without doubt, the road ahead of TEPCO is a long one, beset with challenges greater than those faced to date. The Mid- and Long-Term Roadmap—the Japanese state-curated document outlining the decommissioning of Fukushima—envisions operations stretching a full 30-40 years into the future. Some have suggested it’s an optimistic target, others say that the plan lacks details on key, long-term issues such as permanent solid-waste storage beyond the onsite repository currently being employed. Certainly it is the case that key decisions remain. ……..
City AM 1st June 2018 Energy investment firm Ocean Nuclear today announced the launch of a $5bn (£3.8bn) nuclear energy industry fundraising roadshow in London. The Chinese company has negotiated nuclear infrastructure projects in more than
20 countries and will use 144 meetings at the roadshow to raise money for the programmes.
TerraPower’s Nuclear Reactor Could Power the 21st Century. The traveling-wave reactor and other advanced reactor designs could solve our fossil fuel dependency IEEE Spectrum, By Michael Koziol 3 June 18, “…. ..In a world defined by climate change, many experts hope that the electricity grid of the future will be powered entirely by solar, wind, and hydropower. Yet few expect that clean energy grid to manifest soon enough to bring about significant cuts in greenhouse gases within the next few decades. Solar- and wind-generated electricity are growing faster than any other category; nevertheless, together they accounted for less than 2 percent of the world’s primary energy consumption in 2015, according to the Renewable Energy Policy Network for the 21st Century.
To build a bridge to that clean green grid of the future, many experts say we must depend on fission power. ………several U.S. startups are pushing new reactor designs they say will address nuclear’s major shortcomings. In Cambridge, Mass., a startup called Transatomic Power is developing a reactor that runs on a liquid uranium fluoride–lithium fluoride mixture. In Denver, Gen4 Energy is designing a smaller, modular reactor that could be deployed quickly in remote sites.
In this cluster of nuclear startups, TerraPower, based in Bellevue, Wash., stands out because it has deep pockets and a connection to nuclear-hungry China. Development of the reactor is being funded in part by Bill Gates, who serves as the company’s chairman. And to prove that its design is viable, TerraPower is poised to break ground on a test reactor next year in cooperation with the China National Nuclear Corp. …….
“There are multiple levels of problems with the traveling-wave reactor,” says Arjun Makhijani, the president of the Institute for Energy and Environmental Research. “Maybe a magical new technology could come along for it, but hopefully we don’t have to rely on magic.” Makhijani says it’s hard enough to sustain a steady nuclear reaction without the additional difficulty of creating fuel inside the core, and notes that the techniques TerraPower will use to cool the core have largely failed in the past…….
The TWR will be able to use depleted uranium, which has far less U-235 and cannot reach criticality unassisted. TerraPower’s solution is to arrange 169 solid uranium fuel pins into a hexagon. When the reaction begins, the U-238 atoms absorb spare neutrons to become U-239, which decays in a matter of minutes to neptunium-239, and then decays again to plutonium-239. When struck by a neutron, Pu-239 releases two or three more neutrons, enough to sustain a chain reaction.
It also releases plenty of energy; after all, Pu-239 is the primary isotope used in modern nuclear weapons. But Levesque says the creation of Pu-239 doesn’t make the reactor a nuclear-proliferation danger—just the opposite. Pu-239 won’t accumulate in the TWR; instead, stray neutrons will split the Pu-239 into a cascade of fission products almost immediately.
In other words, the reactor breeds the highly fissile plutonium fuel it needs right before it burns it, just as Feinberg imagined so many decades ago. Yet the “traveling wave” label refers to something slightly different from the slowly burning, cigar-style reactor. In the TWR, an overhead crane system will maintain a reaction within a ringed portion of the core by moving pins into and out of that zone from elsewhere in the core, like a very large, precise arcade claw machine.
To generate electricity, the TWR uses a more complicated system than today’s reactors, which use the core’s immense heat to boil water and drive a steam turbine to generate usable electricity. In the TWR, the heat will be absorbed by a looping stream of liquid sodium, which leaves the reactor core and then boils water to drive the steam turbine.
But therein lies a major problem, says Makhijani. Molten sodium can move more heat out of the core than water, and it’s actually less corrosive to metal pipes than hot water is. But it’s a highly toxic metal, and it’s violently flammable when it encounters oxygen. “The problem around the sodium cooling, it’s proved the Achilles’ heel,” he says.
Makhijani points to two sodium-cooled reactors as classic examples of the scheme’s inherent difficulties. In France, Superphénix struggled to exceed 7 percent capacity during most of its 10 years of operation because sodium regularly leaked into the fuel storage tanks. More alarmingly, Monju in Japan shut down less than a year after it achieved criticality when vibrations in the liquid sodium loop ruptured a pipe, causing an intense fire to erupt as soon as the sodium made contact with the oxygen in the air. “Some have worked okay,” says Makhijani. “Some have worked badly, and others have been economic disasters.”
Today, TerraPower’s lab is filled with bits of fuel pins and reactor components. Among other things, the team has been testing how molten sodium will flow through the reactor’s pipes, how it will corrode those pipes, even the inevitable expansion of all of the core’s components as they are subjected to decades of heat—all problems that have plagued sodium-cooled reactors in the past. TerraPower’s engineers will use what they learn from the results when building their test reactor—and they’ll find out if their design really works.
The safety of the TerraPower reactor stems in part from inherent design factors. Of course, all power reactors are designed with safety systems. Each one has a coping time, which indicates how long a stricken reactor can go on without human intervention before catastrophe occurs. Ideas for so-called inherently safe reactors have been touted since the 1980s, but the goal for TerraPower is a reactor that relies on fundamental physics to provide unlimited coping time.
The TWR’s design features some of the same safety systems standard to nuclear reactors. In the case of an accident in any reactor, control rods crafted from neutron-absorbing materials like cadmium plummet into the core and halt a runaway chain reaction that could otherwise lead to a core meltdown. Such a shutdown is called a scram.
TerraPower plans to break ground on its test reactor next year in China. If all goes well, this reactor will be operational by the mid-2020s. But even if TerraPower’s reactor succeeds wildly, it will take 20 years or more for the company to deploy large numbers of TWRs. Thus for the next couple of decades, the world’s utilities will have no choice but to rely on fossil fuels and conventional nuclear reactors for reliable, round-the-clock electricity.
Fission will probably not be the final answer. After decades of always being 30 years away, nuclear fusion may finally come into its own. Societies will be able to depend on renewables more heavily as storage and other technologies make them more reliable……….
Beyond Iran and North Korea, the nuclear-armed rivals of India and Pakistan need help to prevent a war. A cease-fire in disputed Kashmir shows progress, but a deeper reconciliation, especially an understanding in their shared history, is needed. May 31, 2018, By the Monitor’s Editorial Board
As long as he is already trying to denuclearize North Korea as well as permanently ban Iran from building a nuclear weapon, President Trump may want to pay heed to India and its neighbor Pakistan. The two nuclear-armed powers have gone to war three times since they achieved independence in 1947. And over the past year, regular skirmishes along their disputed border in Kashmir have killed dozens and displaced 50,000 civilians.
Pakistan and India each recognize a nuclear war would be mutually devastating. Yet they need help in overcoming a deep suspicion and animosity, driven in part by diverging narratives of their shared past, that could someday trigger a full-scale conflict.
With the border fighting in Kashmir getting out of hand in recent months, the two countries agreed May 29 to honor a cease-fire pact that was first put in place 15 years ago. The agreement is a welcome step. Yet it provides only a pause in hostilities without a commitment to a peace dialogue and, more important, the creation of a culture of reconciliation.
Iran and North Korea are still a long way from any attempt to reconcile with their perceived foes. Ending their nuclear threat has required outside pressure. Pakistan and India, however, have tried at times to come to terms with each other since the violent partition of British India into their respective countries, one largely Muslim and the other largely Hindu. Sometimes their leaders talk or the countries share a sports contest. Nonetheless, trade and travel between the two remain minimal given the size of their economies. And the Kashmir dispute as well as terrorist attacks keep them apart.
Religious differences have mattered less in their relations than the role of nationalist politicians who find it convenient to whip up hatred and fear of the other side. The ill will is generated in large part by competing histories of the 1947 partition – who started it, who killed more people, and who were the heroes and villains. Over the decades, the official history textbooks in each country have become political weapons to create an enemy and build up national unity.
Peace between India and Pakistan will require some sort of agreement on their shared history, one that must reduce old grievances and lessen the paranoia that could trigger a nuclear war. In Northeast Asia, Japan, South Korea, and China have tried in the past two decades to write a joint history in hopes of reducing the use of old resentments. The efforts have largely failed.
Yet this past winter, India and Pakistan achieved some success in transcending nationalist histories with the first citizen-level attempt at a joint telling of their shared history. Two history professors, one in Pakistan and the other in India, held a semester-long course titled “Introduction to South Asian History” that included more than 20 students from each country connected online. The teaching took place mainly over Skype and included a visit of 11 Pakistani students to India in May.
The two teachers, Ali Usman Qasmi of the Lahore University of Management Sciences and Pallavi Raghavan at OP Jindal Global University, reported that the students were amazed to discover what they did not know about the other country. They achieved an “overlapping consensus” on historical events with respect and understanding. The success of the course, they wrote, “shows that an alternative imagining of the past conducive to achieving peace and harmony in the region is … possible.”
Cease-fires in Kashmir, even a peace dialogue or a full opening of trade, will help India and Pakistan avoid the worst kind of wars. But much of that may not matter until the two peoples can craft a shared understanding of the past in order to reconcile for a better future.
Times 30th May 2018 Hitachi ‘won’t pay’ for nuclear accidents at proposed Wylfa plant on Anglesey. Hitachi could seek to absolve itself of financial responsibility for any accidents at its proposed new nuclear power station in north Wales.
The Japanese conglomerate has decided to continue with work developing the planned Wylfa plant on Anglesey after progress in financing talks with the government, which Hitachi is already relying on for a package of loan guarantees, subsidies and potential direct investment to make the project viable.
However, the company wants further concessions to reduce its risks, the Japanese newspaper Nikkei reported. Reports in several Japanese media outlets have claimed that the Wylfa plant could cost as much as three trillion yen, or almost £21 billion — making it even more expensive than Hinkley Point C.
EDF decided to build Hinkley Point only thanks to a 35-year subsidy contract from the government, which locks consumers into paying a fixed price for the power it generates and has been criticised for its high cost.
The Nikkei reported that some of Hitachi’s directors also wanted “safeguards that reduce or eliminate Hitachi’s financial
responsibility for accidents at the plant”. Nuclear operators are already obliged to take out insurance to cover their liabilities in case of an accident. If they are unable to secure insurance from the market, the government is obliged to step in and provide it instead. It is unclear what alternative arrangement or safeguards Hitachi might be seeking. https://www.thetimes.co.uk/edition/business/hitachi-wont-pay-for-nuclear-accidents-at-proposed-wylfa-plant-on-anglesey-gtm28q0k3
Toshiba exits US nuclear project https://www3.nhk.or.jp/nhkworld/en/news/20180531_37/31 May 18 Japanese electronics maker Toshiba is walking away from a nuclear energy project in the US. The firm says it won’t take part in building or operating the nuclear plant.
There are 2 reactors on the drawing board. Toshiba executives say the project is no longer financially viable.
They say an increase in shale production has caused a fall in electricity sales.
They also point to stricter regulations introduced after the 2011 nuclear accident in Fukushima. Toshiba joined the South Texas Project in 2008. Executives were hoping to start operating the reactors around 2016 or 2017.
But the power company that’s heading up the project hasn’t started building them.
Toshiba is cutting its ties to the nuclear power business overseas.
The firm incurred massive losses through its former American nuclear subsidiary, Westinghouse.
“Right now the greenery that we have, the earth, the soil — everything is a product of the things that people who have come before us have left behind,” Narita told NBC News. “We can’t just treat those things carelessly.”
So are there any models of “rogue” regimes with nuclear programs that might appeal to North Korea? The answer is yes. But, unfortunately, it’s a state that kept its nuclear deterrent intact: Pakistan. If Pyongyang is weighing up two possible futures—Libya vs. Pakistan—it’s not much of a choice.
Pakistan began to seriously pursue nuclear weapons in the 1970s, motivated by a desire to deter its more powerful rival India, as well as match India’s nuclear capability. The Pakistani politician Zulfikar Ali Bhutto, who later became prime minister, claimed, “If India builds the bomb, we will eat grass or leaves—even go hungry—but we will get one of our own.” In 1998, on a clear and bright day in the Chagai district, Pakistan carried out a series of nuclear tests. Pakistan’s chief scientific officer said “All praise be to Allah” and pushed the button, causing the mountain to shake in a vast explosion.
In 2016, the Bulletin of the Atomic Scientistsestimated that Pakistan had 130 to 140 warheads and predicted that it would nearly double its arsenal by 2025. Islamabad could deliver nuclear weapons by medium-range ballistic missiles, cruise missiles, F-16 fighters, and tactical systems for short-range use on the battlefield.
We can be confident that North Korea is paying close attention to Islamabad’s experience. After all, the two countries share important similarities. They both face an enduring rivalry with a far more powerful democratic state that used to be part of the same country (India and South Korea). Furthermore, both North Korea and Pakistan have, at times, flouted international norms. In 2003, North Korea withdrew from the Non-Proliferation Treaty. Pakistan never signed the treaty. For decades, North Korea and Pakistan have been informal allies, trading conventional weapons and supporting Iran in the Iran-Iraq War.
In addition, Pakistan’s nuclear capability led the West to handle the country with kid gloves. The United States provided millions of dollars of material assistance to guard Pakistan’s nuclear stockpile, including helicopters and nuclear detection equipment. Pakistan’s nuclear capability is also one reason why Washington continued to provide billions of dollars in military and economic aid, even though Islamabad supported the Taliban insurgency that battled U.S. troops in Afghanistan.
Meanwhile, Pakistan gained prestige as the only Muslim-majority country with nuclear weapons. The Pakistani Ministry of Foreign Affairs described the nuclear program as “Pakistan’s finest hour.” The nuclear program is also domestically popular. The nuclear tests in 1998 that shook mountains led to jubilant street celebrations.
Of course, all of this came at a cost. The money poured into Pakistan’s nuclear program could have been spent on health or education. The nuclear tests in 1998 were condemned around the world. After refusing to sign the Non-Proliferation Treaty, Pakistan faces restrictions on importing civili
civilian nuclear technology. Nuclear weapons may deter India, but they also risk accidents and even escalation to nuclear war.
But for North Korea, the balance sheet still favors the Pakistan model: a poor country that ate grass to build a nuclear deterrent, seeks to be accepted as a recognized nuclear power, supports denuclearization in principle but only as part of a broader international disarmament effort (that will likely never happen), successfully deters a more powerful rival, and gains domestic prestige and international status.
Saddam and Qaddafi made their choices, and they’re both dead. North Korea wants to follow a different path. Why not become the Pakistan of East Asia?
A government-affiliated financial institution balked at an agency’s request to pump 75 billion yen ($688 million) into Hitachi Ltd.’s nuclear power project in Britain, while the entire plan came under fire from citizen groups.
The Agency for Natural Resources and Energy under the Ministry of Economy, Trade and Industry asked the Development Bank of Japan (DBJ) for the investment to help finance a new nuclear power plant designed by Hitachi Ltd. on the island of Anglesey off northwest Wales.
A DBJ executive expressed a willingness to invest but is reluctant to finance more than half of the requested amount, saying of the original figure, “The risk is big.”
Under the plan, Hitachi subsidiary Horizon Nuclear Power Ltd. will be in charge of constructing two reactors for the new nuclear power plant.
Hitachi plans to disperse the risk of loss and slash its investment ratio from the current 100 percent to less than 50 percent as preconditions for the start of construction.
After the company held an extraordinary board meeting on May 28 to discuss the project, Toshiaki Higashihara, president and CEO of Hitachi, told reporters, “We have not decided anything yet.”
The company intends to make an official decision in 2019 on whether to proceed with the project. The DBJ’s reluctance to invest the full amount requested is clouding Hitachi’s financing plan.
The economy ministry, however, considers Hitachi’s project the “touchstone for exports of nuclear power technology.”
The Japanese and British governments reached a broad agreement around the end of 2017 on providing financial support for Hitachi’s project, but they have not decided on specific measures to come up with the estimated 3 trillion yen in total costs.
Under a proposed blueprint, the British government will guarantee loans worth 2 trillion yen. British companies and institutions, Hitachi, and other Japanese companies and institutions would invest 300 billion yen each to cover the remaining costs, sources said.
However, it may not be enough. Construction costs for nuclear power plants have continued to increase as tighter safety standards are being adopted around the world.
Hitachi intends to recover the construction costs through sales of electricity generated from the plant. But if it cannot sell the power at high prices, the plant could become unprofitable.
The project faces criticism from outside sources.
A community group on the island of Anglesey and a Japanese nongovernmental organization submitted to the ministry on May 28 hastily collected signatures calling for the halt of the use of taxpayers’ money for the new nuclear plant.
They also sent a letter to Hitachi, asking the company to withdraw from the project.
Objections to the nuclear plant in Wales were also expressed through a joint program of PAWB, (Pobol Atal Wylfa-B or the People Against Wylfa-B), and FoE Japan, a member of Friends of the Earth International. About 6,000 individuals or members of groups in 37 countries provided their signatures to call for the scrapping of the nuclear power plant project.
They are also demanding that the Japanese government will not guarantee loans for the project and that Japanese government-affiliated banking institutions will not extend loans.
Mei Tomos, a member of PAWB, told a meeting in Japan that it would be irresponsible to proceed with the project when there is still no solution on how to deal with radioactive waste.
Tomos urged Japanese at the gathering to express their opinions, keeping in mind the experience of the 2011 Fukushima nuclear disaster.
