Nuclear waste: from Bure in the Meuse, France to Japan, opponents of the burial unite
In Bure, in the Meuse, the Cigéo project for the burial of long-lived nuclear waste has been recognized as being of public utility. Opponents are calling on the Japanese to mobilize against a similar project on the island of Hokkaido.
Opponents of the Bure nuclear waste burial project have lent their support to the inhabitants of Suttsu, Japan, where a similar project is under study.
Ouest-France Alan LE BLOA. Published on 03/11/2022
On the borders of the Meuse and Haute-Marne regions, the Cigéo project for a nuclear waste burial center in Bure has been declared to be in the public interest. The decree, published on Friday, July 8, authorizes the National Agency for Radioactive Waste Management (Andra) to acquire the land needed for the surface installations, as well as the land located above the galleries. This means about 3,500 hectares, which can be expropriated if necessary.
85,000 m3 of radioactive waste
The aim of the project is to bury 85,000 cubic meters of long-lived high-level and intermediate-level radioactive waste from France’s nuclear power plants 500 meters underground by at least 2080. This decisive step, since the launch of research on site twenty years ago, has rekindled tensions. Some thirty associations and residents have filed an appeal with the Council of State to challenge the decision. A message relayed to Japan
On September 16, EELV and LFI parliamentarians gave their political support to the opponents’ action… which is becoming international. In a message relayed to Japan, they have, in fact, sent their support to the inhabitants of the village of Suttsu, opposed to the project of burying radioactive waste in the subsoil of the island of Hokkaido, in the north of the archipelago. The burial projects “are devastating for our territories and represent economic brakes for their future. No one wants to live next to a radioactive repository. The promises of development are lies intended to make the projects acceptable”, they write, condemning “the lack of transparency of the authorities”.
In the meantime, in Bure, an observatory for the health of local residents is being set up. Its objective? To monitor the physical and psychological health of residents within a 25 km (6,000 people in 180 municipalities) and 50 km (340,000 people in 679 municipalities) perimeter. Some 900 people, selected at random, are to be interviewed to assess their health.
Nuclear waste: in Japan, a sensitive project in an earthquake-prone region
On the island of Hokkaido, a contested project plans to bury 19,000 tons of radioactive waste 300 m underground. In a region subject to the risk of earthquakes.
Yugo Ono, geologist and professor emeritus at the University of Hokkaido, considers that it is risky to bury radioactive waste in an area subject to seismic movements.
Ouest-France Johann FLEURI. Published on 03/11/2022 at 06h30
On the island of Hokkaido, Numo is carrying out stage 1 of the investigation, which began in 2020. The radioactive waste management company is studying the location, soils, seismic history of the area and calculating budgets. Residents and the city council will be asked to vote on whether to proceed with the project and move to Phase 2. The vote, scheduled for November, has been postponed.
Stored for over a thousand years
The 19,000 tons of nuclear waste that could eventually be buried on site, between 300 m and 3 km below the surface of the ground, are extracts of liquid waste, which after several treatments, remain highly radioactive and must be stored for more than a thousand years, to no longer present a danger to humans. The burial project, the first of its kind in the archipelago, consists of placing them in stainless steel tubes, so that they can be stored as vitrified waste. Numo plans to store 40,000 of these containers underground.
Soil and water table
An underground project that seems risky in a country subject to earthquakes. At Numo, we believe that “the degree of danger is under control”. In the event of a major earthquake, “the containers will follow the movement of the earth”. But Yugo Ono, a geologist and professor emeritus at Hokkaido University, does not share this opinion. “Buried, the waste could pollute the soil and groundwater in the event of a strong earthquake,” he says.
Risks
“The geology of the region, composed of volcanic rocks, is unsuitable for such a project, says the scientist. The soil is very affected by seismic activity. In the case of a major earthquake in Suttsu, “the radioactivity will spread into the water table,” he says. The waste would be stored at a depth of 300 meters, while “seismic activity can be felt up to 10 kilometers down.” Under pressure, the expert is certain: “The tanks will break.”
Another method
Rather than burial, “the only method of storing radioactive waste for Japan today is in steel containers, covered with 2 meters of concrete, within the walls of nuclear power plants. According to Yugo Uno, “this is the safest method, which we master best and it is not so expensive”. But this system requires that the containers be changed every fifty years at the most because the steel will be attacked by radioactivity. “Every twenty years would be better for maximum safety.”
REPORT. In Suttsu, Japan, the inhabitants do not want nuclear waste
At a time when Japan is announcing the restart of seventeen nuclear reactors by 2023, the question of radioactive waste management arises. In Suttsu, a landfill project is under study, to the great despair of the inhabitants.
Miki Nobuka, 50 years old, says she learned that the project of nuclear waste burial was validated while she was buying her bread.
Ouest-France Johann FLEURI. Published on 03/11/2022
“We don’t want our village to become a garbage dump,” say Kazuyuki Tsuchiya and his wife Kyoko. This couple of septuagenarians runs an inn in Suttsu, located on the island of Hokkaido, in northern Japan. This village of 2,800 souls, 78% of which is made up of forests, is picturesque and is located between mountains and the sea.
It is here that a nuclear waste storage project has been taking shape since 2020. Suttsu and the neighboring village of Kamoenai (800 inhabitants) were the only ones to apply to the Radioactive Waste Management Corporation (Numo), created by the Ministry of Economy, Trade and Industry and the electricity companies, and were selected to receive, within 20 years, the 19,000 tons of radioactive waste piling up in the country’s power plants, particularly in Fukushima Dai-chi and Rokassho in Aomori, where storage capacity is saturated.
In Japan, between the villages of Suttsu and Kamoenai, which have applied for the radioactive waste burial project, is the Tomari nuclear power plant. In Japan, between the villages of Suttsu and Kamoenai, which have applied for the radioactive waste disposal project, is the Tomari nuclear power plant.
Although Suttsu officially submitted its application, the inhabitants feel that they were not consulted and accuse the municipal council of having made the decision alone. Miki Nobuka, 50 years old, says she learned that the project was approved while she was buying her bread. This mother has been campaigning ever since to “stop it for our children”.
More than 50% of the inhabitants against
According to Kazuyuki Tsuchiya’s calculations, “more than 50% of the inhabitants of Suttsu are against”. Not having had access to the details of the project, “the council makes heavy decisions in plenary sessions”. The residents feel betrayed and angry. “The mayor wants to take advantage of the subsidies to develop the city, but we don’t want it,” he says.
According to Kazuyuki Tsuchiya’s calculations, “more than 50 percent of the residents of Suttsu are against” the radioactive waste disposal project.
In the first phase of the project, which consists mainly of soil investigation, 15 million euros are paid to each of the two municipalities. Fifty-three million in the second phase, which is to be voted on by referendum. The city council can say stop at any time,” says a Numo spokesperson. A vote will validate the continuation of each phase.”
Lack of transparency
But “we want to have access to all the documents: it’s unacceptable,” says Kazuyuki Tsuchiya, who won his case in the Hakodate administrative court last March for lack of transparency on the part of local authorities. The court ruled that the city of Suttsu should publicly share all the minutes of the city council meeting during which the vote for the final storage project was held. The vote for the second phase, originally scheduled for November, has therefore been postponed to a later date.
When contacted, the mayor of Suttsu refused to answer our questions. The Kishida government has announced the restart of 17 of its reactors by 2023 and the probable construction of new ones in the future. The Prime Minister also declared that before each restart, the local population, who live near the said plants, would be consulted. A promise that makes the inhabitants of Suttsu smile bitterly.
Japanese government seeks to allow nuclear reactors to operate for 80 years
Japanese authorities on Wednesday proposed that the safety of nuclear
plants aged 30 years or older be checked at least once a decade to obtain
approval for continued operation.
The proposal from the Nuclear Regulation
Authority came as the government seeks to scrap a rule that limits the
operating life of reactors to a maximum of 60 years. The regulator said the
proposed mandatory safety checks should also be applied to nuclear reactors
in use for more than 60 years.
It means that if the safety is confirmed,
Japan may be able to authorize nuclear plants to run for 80 years, as in
the United States. “The (proposed) regulations will be much stricter than
the current system,” Shinsuke Yamanaka, chairman of the nuclear watchdog,
said at a press conference. “It is our responsibility to regulate
properly.”
Japan Today 3rd Nov 2022
Minister Vows Response to Fukushima Reputational Damage
https://www.nippon.com/en/news/yjj2022103000407/ Soma, Fukushima Pref., Oct. 30 (Jiji Press)–Japanese industry minister Yasutoshi Nishimura said Sunday the government will face and surely respond to local people’s concerns about reputational damage related to the planned release of treated radioactive water into the ocean from the disaster-crippled Fukushima No. 1 nuclear power plant.
The minister made the remark when he visited a fishing port in Soma, Fukushima Prefecture, northeastern Japan, and exchanged opinions with local fishery workers, who voiced such concerns.
Aiming to start the release of the treated water containing radioactive tritium around spring next year, the Japanese government and Tokyo Electric Power Company Holdings Inc. <9501>, the operator of the Fukushima No. 1 plant, have been giving explanations about the move to local people and proceeding with the construction of related facilities.
At the day’s meeting with Nishimura, the fishery workers called for measures that would allow Fukushima fishery products to be sold at fair prices. They also asked the central and Fukushima governments to work in closer cooperation so that local opinions can be taken in swiftly.
After the meeting, Nishimura told reporters, “We’ll launch the work to establish a new framework for communicating the attractiveness of Fukushima’s fishery products and boosting their consumption through cooperation with businesses and local governments across Japan.” He added that the government will give details of the plan possibly by the end of the year.
Bring voices from the coast into the Fukushima treated water debate
PNAS Leslie Mabon and Midori Kawabe 28 Oct 22, More than a decade has passed since the accident at the Fukushima Dai’ichi nuclear power plant in Japan—but the most contentious aspect of bringing the site under control is only just beginning. The Japanese Government has approved plant operator TEPCO’s plan to release treated water into the Pacific Ocean. That water is currently being stored onsite and retains some radioactive substances after treatment. The decision to release this water has provoked political contention and societal concern. South Korea, China, and Taiwan, as well as international environmental nongovernmental organizations, have expressed strong concern; and fisheries cooperatives in Japan remain opposed to the releases for fear of possible reputational impacts on Fukushima seafood.
TEPCO are confirming specific details of the release process, and an International Atomic Energy Agency (IAEA) task force has made multiple visits to the Fukushima Dai’ichi site at the behest of the Japanese Government and TEPCO. The releases are scheduled to start in 2023 and run for many years………………………………………
Even if TEPCO and the government minimize environmental impacts through careful management of the process, as some international experts believe possible (3), the indirect socioeconomic impacts of the treated water releases on Fukushima’s coastal fishing communities are likely to be experienced over the long term. Proposals made by the community of researchers and institutions working at the science–policy interface for Fukushima treated water must be informed by a deep understanding of the local community context—and they must be responsive to the concerns of local stakeholders. We believe local community concerns can be more fully incorporated into decision making for treated water at Fukushima Dai’ichi………………….
Local Influence
Within Japan, the government expert committees advising the management of treated water are dominated largely—albeit not exclusively—by engineering and physical science expertise (4). Despite fisheries cooperatives’ long-standing and vocal opposition to the releases, plant operator TEPCO explained in August 2021 that they had not at that point had direct consultations with fisheries representatives regarding the discharges (5). Formal dialogue between the operator and the fisheries sector in Fukushima on the topic of releases did not start until TEPCO and the Japanese Government had determined most of the technical details. This left little room for the plans to be adjusted in response to any concerns from Fukushima’s fishers or coastal residents…………………………
Both within Japan and internationally, Fukushima’s fishers and coastal residents, although not completely absent, have received limited consideration as stakeholders. Fishers and residents tend to be caricatured as being concerned over rumors and reputational damage to Fukushima seafood owing to the treated water releases (9, 10)—or as harboring “irrational” safety fears over the relatively small amounts of radioactivity from pollutants such as tritium that are contained in the tanks currently storing treated water onsite (e.g., 3)………….
Missing Local Context
The Japanese Government is unlikely to reverse their decision to release treated water. Even so, it’s important to recognize that fishing is both an economic activity and the subject of deep emotional investment on the Fukushima coast. ……………………………….more https://www.pnas.org/doi/10.1073/pnas.2205431119
Takahama Unit 4 postpones resumption of operation due to rising equipment temperatures
October 21, 2022
On October 21, KEPCO announced that it had postponed the restart of the Takahama Unit 4 reactor, which is currently shut down for routine inspections, due to a temperature rise in one of the devices inside the reactor containment vessel that is activated when there is a problem with the primary cooling system. The reactor startup scheduled for the 21st will be postponed due to a temperature rise in one of the devices that operates in the reactor containment vessel in the event of a primary cooling system problem.
After the reactor start-up on the 21st, the plant was scheduled to resume power delivery on the 24th and commercial operation on November 18. KEPCO was planning to resume commercial operation on November 18. KEPCO is investigating the impact on the process and the cause of the temperature rise.
According to KEPCO, the temperature rose because of one of the safety devices used to reduce the pressure that rose due to a problem in the primary cooling system. The temperature was 4.2 degrees Celsius at around 3:30 p.m. on March 21, but it rose to 77 degrees Celsius at around 4:35 p.m., triggering an alarm.
https://www.tokyo-np.co.jp/article/209502?fbclid=IwAR3dktnvsjEKFDfgo3U1N_aguXV53mX5X7AURPw_J7_XArDcUkMPgjIh-dk
M5.0 quake shakes Japan’s Fukushima, no damage reported
https://english.kyodonews.net/news/2022/10/a43d370b386a-m51-quake-shakes-japans-fukushima-no-tsunami-warning-issued.html KYODO NEWS – 21 Oct 22,
An earthquake with a preliminary magnitude of 5.0 struck northeastern Japan, including Fukushima Prefecture, on Friday afternoon, the weather agency said, though no tsunami warning was issued and no damage was reported.
The quake occurred at around 3:19 p.m. off Fukushima and registered a lower 5 on the Japanese seismic intensity scale of 7 in Naraha, a town in the prefecture’s coastal area, the Japan Meteorological Agency said.
No new abnormalities were found following the quake at the crippled Fukushima Daiichi and nearby Daini nuclear power plants, which are set to be decommissioned in the aftermath of the 2011 killer quake and tsunami, according to the nuclear regulator. Naraha hosts the Daini power station.
An area fire department said it had received no reports of injuries or damage.
The quake’s focus was in the Pacific at a depth of about 29 kilometers.
Elsewhere in the prefecture, the quake registered 3 in the coastal city of Iwaki and 2 in the inland Aizu region. The quake was also felt in parts of the surrounding prefectures of Ibaraki, Tochigi and Miyagi, as well as in Chiba Prefecture.
Editorial: Japan’s push to extend nuke reactor life past 40 yrs doesn’t add up
October 13, 2022 (Mainichi Japan)
The administration of Prime Minister Fumio Kishida has begun considering eliminating the “40-year rule,” or the principle that nuclear reactors should be decommissioned after four decades in service.
Japan’s Nuclear Regulation Authority (NRA), which is responsible for the law enforcing the 40-year principle, has given its blessing to this new policy. The Ministry of Economy, Trade and Industry, in charge of the stable supply of electricity, will now decide how a reactor’s operating life should be determined.
The 40-year rule was introduced after the meltdowns at Tokyo Electric Power Co. Holdings (TEPCO)’s Fukushima Daiichi Nuclear Power Station in March 2011. And since then, the idea that nuclear reactors will run for 40 years and no more has become firmly entrenched.
The rule was also Japan’s declaration that it was committed to moving away from nuclear dependence by decommissioning aging reactors one by one, reflecting upon the seriousness of the disaster.
A policy shift from the 40-year rule would require national consensus. It is unacceptable for the administration to leave legal revisions regarding safety up to the industry ministry — which spent decades promoting nuclear power — and essentially dictate a return to atomic power. It is also inconsistent with the government’s own Basic Energy Plan, which clearly states that Japan’s dependence on nuclear power will be reduced.
In August this year, Prime Minister Kishida abruptly announced a policy of building new nuclear power plants and restarting existing reactors. This was based on the belief that atomic power is indispensable for both a stable electricity supply and to decarbonize Japan’s energy system.
One obstacle to this is those existing reactors’ service time. Most of them have been in operation for 30 years, and should the 40-year rule be strictly applied, more than 10 reactors will have to be decommissioned by 2030.
The electricity sector and the industry ministry hope to extend those reactors’ operational life to save money, arguing that “40 years is just a guideline with no clear scientific basis.” However, data on accident risks at aging atomic power plants is limited. After the Fukushima Daiichi meltdowns, it was decided that 11 reactors in Japan would be decommissioned because it would cost too much to implement the safety measures needed to keep them running.
NRA head Shinsuke Yamanaka stated, “We will establish a system that enables strict regulation no matter what the operational life may be.” But is there enough knowhow, and a sufficiently robust review system, to maintain effective regulation?
Even if the rules are changed to allow nuclear reactors to stay online regardless of how long they’ve been in service, this does not guarantee that restarts will go smoothly. In addition to potential nuclear accidents, municipalities hosting the plants have deep-seated concerns about information disclosure and evacuating residents in case of a disaster.
What is needed is an energy policy that makes use of the lessons learned from Fukushima Daiichi. Forcing through political decisions without convincing the Japanese public will only stoke their distrust of nuclear power.
https://mainichi.jp/english/articles/20221013/p2a/00m/0op/009000c
[Nuclear Waste] Two Years After Applying for the Literature Review, the Divide Remains Unresolved in Suttsu Town, Hokkaido, Japan
High-level radioactive waste, or “nuclear waste.
Two years have passed since the town of Suttsu, Hokkaido, applied to participate in a study for the construction of a final repository for this waste.
The first phase of the literature review has reached its climax, but the focus is on whether or not to proceed to the next phase of the survey.
We covered the current situation in Machi.
Salmon landings are at their peak in Sutou Town.
Strong winds blow all year round.
In the fall of last year, when the wind began to turn cold, the town attracted nationwide attention.
（Mayor Kataoka said, “I want to put this nuclear waste on the table.
Mayor Haruo Kataoka decided to apply, so to speak, on his own initiative to the national government’s survey for the construction of a final disposal site for nuclear waste from nuclear power plants.
Nuclear waste has no place to go and cannot even be touched by humans.
After it is mixed with glass and hardened, it is buried in a stratum deeper than 300 meters underground.
It will take 100,000 years for the waste to reach a safe state.
However, for each of the three levels of investigation accepted, the municipality is given a large subsidy.
This was Mayor Kataoka’s goal.
（Mayor Kataoka said, “I heard about this in a study group on the final disposal of nuclear power plants, and I thought it was a pretty tasty grant.
The grant obtained from the literature review was 1.85 billion yen over two years.
Part of the grant is used for personnel expenses for nursery staff, and the rest is set aside as a fund.
For a small town, this is a valuable financial resource.
Kazuyuki Tsuchiya runs a pension in the town.
He has consistently opposed the survey.
(Kazuyuki Tsuchiya) “The gap between those in favor and those opposed is deepening. Those who are in favor of the project have talked to me.
I try not to mention it as much as possible. I try not to mention it.”
The literature survey will soon reach the two-year mark, with the pros and cons remaining divided.
However, with the exception of Kamieuchi Village, where the survey is also underway, no local government has raised its hand.
In the town of Sutto, a referendum will be held to decide whether or not to conduct the next survey, but Mayor Kataoka has not found the right time to do so.
(Mayor Kataoka (last month): “The residents are still anxious. They are anxious in the absence of knowledge.
I frankly feel that things are not progressing very smoothly.
(Mr. Kazuyuki Tsuchiya) “I think that those who are complying with the town’s way of doing things have stopped thinking about it.
（Is the future bright?
(Kazuyuki Tsuchiya) “It is not bright. The darkness is getting deeper and deeper.
There is an expert at Hokkaido University who has been advising NUMO, which is conducting the survey, for many years.
(Professor Tsutomu Sato, Hokkaido University Graduate School) “The literature survey has already started, and I have given advice before that.
The next time the overview survey starts, I will advise them on how they should proceed in this way.”
Discussions with local residents have not progressed well in the town of Sutou.
Professor Sato points out that the reason for this is also on NUMO’s side.
(Professor Tsutomu Sato, Hokkaido University Graduate School) “Right now, NUMO is investigating what they want to investigate for their own purposes.
They may want to know why we can get good oysters here, or why it may have something to do with geology or geological strata.
It is difficult to say whether the research is being conducted in such a way that the residents would want to know about it.
The purpose of a literature review is to compile information for a dialogue that is beneficial to both parties.
If we can do that well, I think we can overcome the hurdle of the literature review.
The debate over nuclear waste has created a deep divide within the town.
Concrete solutions to bridge that divide remain shrouded in darkness.
https://www.stv.jp/news/stvnews/cs3pdu00000022ym.html?fbclid=IwAR3ShIsHhdE6kSOtkO5grcv1gxg2Dbs-PKkbnX8vB1LKocXNYtFZ2qow7XA
Japan preparing the way for continued extension of the operating lifetime of its nuclear reactors
Amid an energy crunch that served a severe blow to Japan’s economy, the
government in Tokyo is considering extending the lives of the country’s
nuclear power plant fleet beyond the maximum current lifespan of 60 years.
According to local reports cited by Reuters, the plan is to remove the
limits on nuclear power plants’ lifetimes as a whole, which would open the
door to serial extensions of these lifetimes. The changes will need to be
approved by the Nuclear Regulation Authority.
Japan has 33 nuclearreactors, of which four have received approval to operate for a period of
60 years. This represents an extension on their original 40-year lifespans,
as stipulated in the current nuclear power regulation that was implemented
after the Fukushima tragedy. Currently, the regulations only allow one
20-year extension after the original 40-year period.
Oil Price 14th Oct 2022
Japan set to extend maximum lifespan of nuclear plants beyond 60 yrs
Nuclear I love you forever. Despite of the still ongoing Fukushima nuclear disaster, the Japanese government is still in love with nuclear….
Oct 5, 2022
The head of Japan’s nuclear regulator said Wednesday a rule that limits the operating life of nuclear power plants to a maximum of 60 years is expected to be removed from the country’s regulations.
The possible change is in line with Prime Minister Fumio Kishida’s goal of extending the lifespan to reduce carbon emissions and provide a stable electricity supply. Still, public concern over the safety of nuclear facilities is deep-seated in Japan following the 2011 Fukushima disaster.
“We can assure you that strict regulations will never be compromised,” Shinsuke Yamanaka, chairman of the Nuclear Regulation Authority, said at a press conference.
Following the nuclear crisis triggered by a massive earthquake and tsunami, Japan introduced stringent safety standards limiting nuclear reactors’ service period to 40 years in principle.
However, that period can be extended once by 20 years if safety upgrades are made and a reactor passes the regulation authority’s screening.
The Ministry of Economy, Trade and Industry said Wednesday it would determine the plants’ operational service per a regulation under its jurisdiction, and its plan was approved by the regulatory body.
The NRA plans to create a system to ensure each aging nuclear power plant’s safety.
Evidence of Second-Generation Atomic Bomb Survivors Suffering Lasting Effects
October 1, 2022
A tremendous investigative reporting article written by Ms. Misa Koyama of Mainichi Newspaper regarding second-generation A-bomb survivors’ issues focusing on hereditary effects of radiation and the necessity of support measures for second-generation survivors. This article was published on June 4,2022, in the nationwide edition of Mainichi Newspaper.
Mitsubishi Heavy, Hitachi to develop new nuclear reactor for 2030s use
September 29, 2022
TOKYO (Kyodo) — Mitsubishi Heavy Industries Ltd. and a subsidiary of Hitachi Ltd. will separately develop next-generation nuclear reactors in what could be the first two projects in the government’s recent policy shift to push nuclear energy.
Mitsubishi Heavy said Thursday it will develop with four major Japanese utilities an advanced light-water reactor, a new type of pressurized water reactor, or PWR, deemed safer than existing models, and plan to put it into use in the mid-2030s.
The four power companies — Kansai Electric Power Co., Hokkaido Electric Power Co., Shikoku Electric Power Co. and Kyushu Electric Power Co. — all operate Mitsubishi Heavy reactors at their nuclear plants.
The new reactor, called SRZ-1200, is designed to be more resilient to natural disasters, such as tsunamis and earthquakes, as well as terrorist attacks, Mitsubishi said.
The facility, with an output of about 1.2 million kilowatts, will also enhance equipment to seal off melted nuclear fuel in a containment vessel and prevent or limit radiation leaks in the event of an accident.
Hitachi-GE Nuclear Energy Ltd., a Hitachi subsidiary, will also develop an advanced nuclear reactor based on light-water reactor technology for use in the mid-2030s, a person familiar with the matter said Thursday. Hitachi has an 80.01 percent stake in the subsidiary, with the rest owned by General Electric Co.
These plans come as the Japanese government announced in August that it would promote the construction of next-generation nuclear power plants to ensure a stable electricity supply without producing carbon dioxide emissions, in a major reversal from its policy of no new nuclear energy.
Among a variety of next-generation nuclear reactor types, the government plans to prioritize developing advanced light-water reactors as it could utilize existing supply chains, given the technological similarities to PWRs.
Chief Cabinet Secretary Hirokazu Matsuno welcomed the news of Mitsubishi Heavy’s project, saying at a press conference, “I hope relevant ministries will consider (helping the development of) next-generation reactors based on research and development activities like this.”
Concerns over the safety of nuclear power generation remain strong in Japan after a massive earthquake and tsunami caused the nuclear crisis at the Fukushima Daiichi plant in 2011 — the world’s worst nuclear disaster since Chernobyl in 1986.
Such safety concerns prompted the government to shelve the construction of new nuclear reactors, even as Japanese nuclear regulators set stricter safety regulations after the Fukushima disaster.
https://mainichi.jp/english/articles/20220929/p2g/00m/0bu/053000c
Mitsubishi Heavy to develop new nuke reactor with 4 utilities
September 30, 2022
Mitsubishi Heavy Industries Ltd. and four major Japanese power utilities will work together to develop a next-generation nuclear reactor that will go online in the 2030s, the company announced on Sept. 29.
The announcement comes as the central government reverses course from its cautious nuclear energy policies set in the aftermath of the 2011 Fukushima nuclear disaster.
Mitsubishi Heavy Industries plans to develop an advanced light water reactor, an improved version of conventional pressurized water reactors. It will do so jointly with Kansai Electric Power Co., Kyushu Electric Power Co., Shikoku Electric Power Co. and Hokkaido Electric Power Co.
It will be one of the next-generation reactors that the administration of Prime Minister Fumio Kishida is considering promoting, along with other next-generation reactors, alongside rebuilding existing ones.
Mitsubishi Heavy Industries has been working with the four utilities, which operate pressurized water reactors, to develop new technology to enhance the safety of the reactors.
A Mitsubishi Heavy Industries official said the new reactor will be safer than conventional ones since it will be equipped with a “core catcher,” designed to cool melted reactor cores in the event of a reactor meltdown like the ones at the Fukushima No. 1 nuclear plant in March 2011.
The new reactor could also generate 1.2 gigawatts of electricity, equivalent to the capacity of a large nuclear reactor in Japan, according to the official.
But the company has yet to decide which utility will build the planned reactor and where it will be built because of difficulties finding a new construction site amid a strong public distrust toward nuclear reactors.
One potential candidate site is KEPCO’s Mihama nuclear plant in Fukui Prefecture, according to a source. The utility is decommissioning the plant’s No. 1 and No. 2 reactors, while more than 40 years have passed since the No. 3 reactor first went online.
Mitsubishi Heavy Industries has not disclosed the cost to build the new reactor, either.
One estimate suggests the construction of a new nuclear reactor will require 1 trillion yen ($6.91 billion), nearly double the amount spent on building an existing one, due to additional expenses required to comply with stricter safety regulations.
The central government plans to include nuclear reactors in its new support measures to encourage the construction of power plants amid calls from major utilities for financial support.
The government had long maintained that it had no plans to push for the construction of new nuclear reactors or the rebuilding of existing ones in the wake of the 2011 nuclear disaster.
But the Kishida administration changed that policy after energy costs began to soar and the country faced the prospect of a severe power shortage. Kishida said in August that he will consider promoting the development and construction of next-generation rectors with new safety mechanisms.
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25 June- THE PUKE ON NUKES
Thursday, June 25, 2026
7pm Central Time (8pm ET, 6pm MT, 5pm PT) UTC – 5
From NRC & DOE Deregulation to Techno-Fascist Billionaires Going Nuclear, Plus a Few Songs from Atomic Cabaret REGISTER
26 June – Radiation Trainwreck at the NRC / Join the Protect Better Campaign – https://us02web.zoom.us/meeting/register/4ZlZ5_qLSHGiLSCg8FF6Bg#/registration
Cuba Is Not a Failed State – It Is a Besieged State
PETITION: “Global Appeal to Endorse Palestinian Right of Return of Refugees”
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