Tsunami Couldn’t Have Been Foreseen, Says Fukushima Plant Operator’s Ex-Chairman

MOSCOW (Sputnik) – Former chairman of Tokyo Electric Power Company (TEPCO) Tsunehisa Katsumata said in court on Tuesday that a devastating tsunami that led to the 2011 accident at the Fukushima nuclear power plant could not have been predicted, NHK reported.
During the hearing, the former TEPCO chairman said that he was briefed in 2009 on the possibility of a tsunami by a TEPCO official who sounded very skeptical, adding that he believed in the quality of work of the Nuclear Power and Plant Siting Division and did not doubt existing safety measures, the NHK broadcaster reported.
Katsumata and ex-vice presidents of TEPCO Ichiro Takekuro and Sakae Muto were accused of professional negligence resulting in death and injury, but all of them denied the charges.
The prosecutors argued that the top management was fully responsible for ensuring security at the nuclear plant, the broadcaster added.
The court hearings will proceed with statements by the families of those whose deaths are linked to the nuclear accident.
In March 2011, a 9.0-magnitude offshore earthquake triggered a 46-foot tsunami that led to the accident and shutdown of the plant. The accident is considered to be the world’s worst nuclear disaster since Chernobyl in 1986.

Tepco apologizes over inappropriate hashtag for image of crippled Fukushima plant

A post from Tokyo Electric Power Company Holdings Inc.’s official Twitter account, seen here, attracted criticism for insensitivity over the Fukushima nuclear disaster
Oct 30, 2018
Tokyo Electric Power Company Holdings Inc. has apologized after sharing on social media an image from inside its crippled Fukushima No. 1 plant together with a hashtag that means “fascination with factories.”
After the post attracted a lot of negative attention on the power company’s official Twitter and Instagram accounts, a Tepco official said Monday it had been intended to “give a better understanding to the younger generation” of its operations.
But the firm admitted that its social media post had “lacked consideration.”
The term employed in the hashtag, kōjōmoe, has come into use in recent years with a rise in the number of people enjoying views of factories and plants.
However, the utility’s post, which said “Unit4 Spent Fuel Pool at Fukushima Daiichi Nuclear Power Station” along with the hashtag, drew a rush of comments such as “Don’t you feel sorry for the nuclear accident?” and “Don’t make a fool of victims” affected by the reactor core meltdowns at the power station following the March 2011 earthquake and tsunami.
It is not the first time that the major power company has been rebuked for being insensitive to public feelings toward the Fukushima crisis, which was the most severe since the 1986 Chernobyl disaster.
Earlier this year, Tepco halted its sale of file folders with photos showing the current conditions of the Fukushima No. 1 complex, following public criticism.
The folders, offered in a set of three for ¥300, had pictures of the nuclear complex’s No. 1 to No. 4 reactors.
The utility had sold them at two convenience stores on the premises of the complex after people involved in work to scrap the plant asked the utility to sell souvenirs.

Distrust of TEPCO Hampers Decommissioning

Friday, October 19
A major challenge at the Fukushima Daiichi nuclear power plant is disposing of water containing a large amount of radioactive tritium. The Japanese government proposed diluting and releasing the water into the sea, but many fisheries in Fukushima are voicing strong opposition to the proposal. Disposal of the tainted water is a must for scrapping reactors at the plant. So, what should the government and TEPCO officials do?
Doing away with tritium-tainted water is essential
Every day, more than 100 tons of radioactive water builds up. Despite various measures taken since the 2011 accident at Fukushima Daiichi, groundwater continues to enter the reactor buildings, mixing with water which is being used to cool the reactors.
The Tokyo Electric Power Company uses a system called ALPS to treat the water. Officials have been saying that the system’s high-performance filters can get rid of most radioactive substances, except tritium.
TEPCO is not allowed to dispose of that water because its tritium levels surpass the limit set by the government.
That’s why the utility is storing 920,000 tons of the water in more than 800 tanks. The water is expected to increase by up to about 100,000 tons a year. The government and the firm say that in a matter of years, Fukushima Daiichi will run out of space for tanks.
PowerPoint プレゼンテーション
A government panel of experts has been discussing what to do with the water. The experts concluded that the technology for separating tritium cannot be put into practical use yet. They instead put several options on the table such as:
1) Diluting and releasing the water into the sea
2) Heating and evaporating the water
3) Burying the water deep underground
A report later compiled by the panel said releasing the water into the sea will make the most sense. Experts say this is the cheapest and quickest way among all the options. The question is, is it safe?
Tritium exists in the atmosphere. The government, TEPCO and the Nuclear Regulation Authority say tritium emits a weaker form of radiation than other radioactive substances. They say that even if tritium enters the human body, it will be incorporated into water and quickly released outside. Officials say therefore, tritium is likely to pose few health risks if its concentration is low.
In the past, nuclear power plants across Japan actually released water containing tritium after confirming its readings were below the limit.
NRA Chairman Toyoshi Fuketa has been calling on the government and TEPCO to make a quick decision, saying releasing the water into the sea after its tritium level falls below the limit is the only viable option. He thinks the approval process for the proposal is unlikely to take long, so it will have limited impact on the work to scrap the reactors.
Mounting distrust among fisheries
After the expert panel compiled its report, the government held public hearings to make a final decision. At a hearing held in the town of Tomioka in Fukushima Prefecture on August 30th, the proposal came under fire mainly from people in the fishing industry.
The head of the Fukushima Prefectural Federation of Fisheries Cooperative Associations said the proposed move will be a devastating blow to the local fishing industry. He said its past efforts will go to waste, and it will deprive the industry of its motivation for rebuilding businesses.
Fishermen in Fukushima suspended their operations after radioactive materials exceeding the government-set limits were detected in seafood caught off the prefecture following the 2011 accident. But in recent years, no fish from the area have been found to be highly radioactive. Now, fishermen can catch and ship most kinds of fish.
However, some consumers still hesitate to eat marine products from Fukushima. Fish landings are still about one-tenth of levels before the accident. Local fisheries fear that if TEPCO releases the water into the ocean, they will have to delay their plans to resume operations at full capacity and struggle again to make ends meet — even if the water is deemed safe.
The underlying problem is distrust towards the government and TEPCO. There have been numerous instances in which TEPCO withheld the fact that tainted water had leaked into the sea. Locals saw them as acts of betrayal. They fear that once TEPCO begins dumping the water into the sea, consumers may refrain from purchasing fishery products from Fukushima Prefecture even further.
Suspended Fishing Operations At Ports As Fukushima Leaks Prompt Government to 'Emergency Measures'
Public distrust further deepened during the hearings. It came to light that the water stored in some of the tanks contains levels of radioactive substances, such as iodine that exceed the limit. This contradicts the explanation given by the government and TEPCO — that the water treatment system can reduce all radioactive substances to a level below the limit, except for tritium.
My understanding was that tritium was the only radioactive substance in the tanks that exceeds the government-set limits. I was not the only one who was confused. Other participants also expressed concerns that TEPCO may have been concealing the facts.
TEPCO officials explained that levels of some radioactive substances could exceed the limits if the water treatment filters are used continuously. They said that’s not a problem, adding that the goal is to reduce the risk of radiation exposure, and that they have been making the data public on their website.
After hearing this, I checked TEPCO’s website once again. There, I found the iodine levels, but they were buried in a massive amount of data, making it very difficult to find. TEPCO officials didn’t seem eager to provide a full explanation of what has happened so far.
But TEPCO’s claim that this isn’t a problem differs with the public’s view. Its attitude is worsening the problem.
TEPCO officials tend to make decisions based on technical considerations, which often fail to sufficiently acknowledge the concerns of the locals. The officials also appear reluctant to release information that is inconvenient for them. Unless they change their mindset, they will not be able to regain the public’s trust.
Steps TEPCO must take to regain trust
First and foremost, the government and TEPCO must provide thorough explanations and responses to the questions and opinions expressed in the hearings. They need to clarify why they didn’t proactively explain the level of radioactive substances and provide their exact levels and how they will deal with them.
In addition, the government should hold public hearings at various other locations and communicate more with the public. The latest round of public hearings was held only in Fukushima and Tokyo and this didn’t seem sufficient to regain public support.
Decommissioning of the crippled Fukushima Daiichi nuclear plant is a prerequisite for the reconstruction of areas devastated by the nuclear disaster. To this end, treatment of contaminated water is a must, and it needs be done swiftly. However, there will not be progress, no matter which method is taken, without the consent of the people affected by the nuclear disaster.
TEPCO and government officials must offer truthful updates as soon as they happen. While this sounds obvious, it’s the only way to regain people’s trust and resolve the problem of the accumulation of tainted water.

An insider’s perspective on Fukushima and everything that came after

Ars chats with Naomi Hirose, who became TEPCO’s CEO after the Fukushima meltdown.
Naomi Hirose, vice chairman of Tokyo Electric Power Co. Holdings Inc. (TEPCO).
October 5, 2018
The meltdown of the reactors at Fukushima Daichi has changed how many people view the risks of nuclear power, causing countries around the world to revise their plans for further construction and revisit the safety regulations for existing plants. The disaster also gave the world a first-hand view of the challenges of managing accidents in the absence of a functional infrastructure and the costs when those accidents occur in a densely populated, fully developed nation.
Earlier this week, New York’s Japan Society hosted a man with a unique perspective on all of this. Naomi Hirose was an executive at Tokyo Electric Power Company (TEPCO) when the meltdown occurred, and he became its CEO while he was struggling to get the recovery under control. Ars attended Hirose’s presentation and had the opportunity to interview him. Because the two discussions partly overlapped, we’ll include information from both below.
The accident and safety
During his presentation, Hirose noted that the epicenter of 2011’s Tōhoku earthquake was only 180 kilometers from Fukushima. But initially, safety protocols kicked in; called a scram, the protocols led to control rods being inserted into the reactors to shut down the nuclear reactions and bring the plant to a halt. Since this had happened previously in response to earthquakes, Hirose said people were feeling confident the situation was under control.
But the earthquake itself had damaged the power lines that fed the plant, leaving it reliant on internal power to run the cooling pumps. And the source of that power was swept away when the tsunami generated by the quake inundated all six of the reactors on the site. This left the plant unable to cool its reactors; several melted down, and the hydrogen they generated ultimately led to explosions that wrecked the buildings that housed them. Hirose suggests that these explosions were likely sparked as things shifted and fell due to aftershocks.
This has led countries around the world to tighten their rules regarding backup equipment and to re-evaluate the infrastructure they assumed would be available to help manage the accident. We also got a chance to ask Hirose about how he viewed the risks of nuclear power after this experience:
We learned that safety culture is very important. We saw that we were probably a little arrogant. We spent a huge amount of money to improve the safety of that plant before the accident. We thought that this was enough. We learned that you never think this is enough. We have to learn many things from all over the world. 9/11 could be some lessons for nuclear power stations—it’s not just nuclear accidents in other countries, everything could be a lesson.
So we learn: “Do not stop improving the safety.” This is a technical matter, a scientific matter, and we can make these risks as small as possible.
Re-establishing control
In the immediate aftermath of the accident, what had gone wrong in some of the reactors wasn’t even clear; contaminated groundwater was a massive issue, and a substantial exclusion zone forced the evacuation of thousands of residents nearby. Just to do anything on the site required huge amounts of safety gear.
“[In the] first several years, we didn’t have a really clear plan, because it’s troubleshooting,” Hirose told Ars. “Many, many things took place, so we had to settle down these things. Now the condition of the plant is very stable.”
With the stability, one of the first steps chosen was to remove spent fuel, which was stored in elevated tanks in the reactor buildings. Reactor four shut down when the earthquake struck, and more than 1,500 fuel rods have since been safely removed. At reactor three, rubble covering the spent fuel pool has been cleared, and a new roof incorporating a crane has been built, paving the way to remove the spent fuel there.
But the melted-down reactors pose a much larger challenge. “We don’t know exactly the condition of the debris, so we developed several different types of robotics and let them go into the reactor building,” Hirose told Ars. “Now the robotics are taking movies, collecting all the data—temperature, radioactivity. Now we are planning how to attack, how to go to those debris. So maybe it takes a few more years; it depends on analyzing the situation.”
Meanwhile, decontamination work and time have reduced the onsite risk so that workers only need to wear exposure-tracking badges. The area of the exclusion zone with above-background radiation levels has also shrunk considerably.
“There are only two towns left in the evacuation zone—it’s getting smaller and smaller and smaller,” Hirose said during our interview. “Even those two towns—they are planning to develop a new city hall, new spaces for commercial [activity]. Since it’s been 7.5 years already, all the people will not come back. Kids start going to school in the places they went. Each has different situations. But we’d like to have those towns available for everybody. Still, those two towns are prohibited to come back, but we’d like to have that situation cleared.”
Bearing the costs
None of this comes cheaply. When we were discussing risks, Hirose acknowledged, “Once there is a serious accident, the costs of these things is enormous. And we understood that, and everybody realized that.”
But who carries that cost? In the US, the government steps in once costs exceed $12.6 billion. That’s not the case for TEPCO. “Japanese law—it’s called nuclear damage compensation law—clarified that no matter what the size of the damages, it’s singly the nuclear operator that has all the responsibility without fault. So even if we did [make any] mistake, the operator has to pay. The Price-Anderson Act in the US stipulates the limit in the damage. Maybe we need that kind of limit. It’s been discussed in Japan, and it’s a really difficult point.”
(“I mean, we had the accident, so maybe we shouldn’t say anything about this,” he said at this point.)
In the immediate aftermath of the accident, this pushed TEPCO’s finances to a very bad place. Once the site stabilized, so did the costs, but they remain enormous. During his public discussion, Hirose said that they’re running at about $5 billion a year, and that’s expected to continue for 30 years. “We’ve made enough for the past three years, but we have to do it for 27 more,” Hirose told the audience. That will fundamentally limit the actions the company can take for the next several decades.
Japan’s future
What’s that energy economy going to look like? Prior to Fukushima, Hirose was a big advocate of increasing electrification of energy use. He brought that up in our discussion as well.
Electrification definitely will expand—like electric vehicles and heat-pump technology. Those things are much, much more efficient compared to combustion engines or conventional heating systems. Electric vehicles are very efficient, so they don’t use a lot of electricity. Based on our calculations, even if all the automobiles turn into electric vehicles in the Tokyo area, our demand for electricity only goes up 15 percent or so. So it’s not a big, big potential transition.
And still, the total energy consumption would decline very, very much, because we don’t use any gasoline. And if that electricity is provided by renewables or nuclear, carbon dioxide would decrease dramatically. I think electrification is one of the things that will decrease the total demand for energy. It’s just how to generate that amount of electricity, which depends on if it’s nuclear, solar, wind… Electrification and decarbonization are the two key things.
Any increased demand due to electrification, however, will take place against a general decline in energy use in Japan. While already a very efficient society, the Japanese managed to curtail energy use even further as all of the country’s nuclear plants were shut down in the wake of Fukushima. “Have you been to Tokyo? Shops are very bright, very, um, shining with lights. It’s gorgeous—maybe you need sunglasses,” Hirose suggested. “But people started thinking that maybe that was too much.”
Critically, what might have been temporary measures have produced what appear to be permanent changes. “The consumption of electricity has not come back yet,” Hirose told Ars. “Maybe it never will, because the population of Japan is declining. I don’t know if in the long term the demand for electricity goes up.”
Still, the country will need to continue to produce electricity while decarbonizing its grid to meet international agreements. And the government’s plans for doing so include continued use of nuclear power. “The Japanese government set a target: 20-22 percent is generated by nuclear in 2030,” Hirose said. “In order to keep this number, we need to develop new nuclear power. So far, all the electric power companies and operators focus on the restart of the already existing nuclear power plants. Everybody is not in the mood to build a new one, because they are busy handling the restart of the existing plants.”
If the new plants are ever built, Japan will get the chance to see if it can avoid the massive cost overruns that have plagued projects elsewhere.
But that’s a very large if, and during Hirose’s presentation, an audience member pointed out that more than 60 percent of the Japanese population would like to see the country eliminate nuclear power. Other low-carbon sources, however, face significant hurdles in Japan. “Solar is very popular. Wind is possible, particularly offshore wind. But the Japanese Sea suddenly becomes deep, so it’s not like Northern Europe,” Hirose told Ars. “It’s a little technically difficult. Geothermal is very possible. Unfortunately, all the possible places are in national parks or hot-spring towns, so there aren’t many good places. But technically, it’s possible.”
All of which leaves Japan’s long-term energy future unsettled. But, in the immediate future, attention will remain on the restart of the existing nuclear power plants and the identification of the melted fuel on the floor of the remaining reactors.

Former worker’s book: TEPCO unfit to operate nuclear plants

Toru Hasuike, a former employee of Tokyo Electric Power Co., talks about his new book in Kashiwazaki, Niigata Prefecture.
August 27, 2018
KASHIWAZAKI, Niigata Prefecture–Toru Hasuike, who worked at Tokyo Electric Power Co. for 32 years, has published another book that he says shows his former employer should be declared “ineligible” to operate nuclear power plants.
“Kokuhatsu” (Accusation), a 250-page book released on Aug. 27 by Tokyo-based Business-sha Inc., reveals episodes that underscore the utility’s culture of cover-ups and collusion, including how it stacked the decks in its favor for government approval of its new reactors, he said.
After graduating from the Tokyo University of Science, Hasuike, 63, had worked in TEPCO’s nuclear division, including a stint at the now-embattled Fukushima No. 1 nuclear power plant, from 1977 until he left the company in 2009.
His first book about the utility, titled “Watashi ga Aishita Tokyo Denryoku” (Tokyo Electric Power Co. that I loved), was released by Kyoto-based Kamogawa Co. in September 2011, a half-year after the disaster struck the Fukushima No. 1 nuclear plant.
In that book, Hasuike describes the day-to-day activities at TEPCO and the closed nature of the regional monopoly in a matter-of-fact tone. He does not accuse the company of cover-ups or collusion in the book.
“Back then, I believed that even TEPCO would transform itself (following the Fukushima nuclear disaster),” Hasuike said in an interview with The Asahi Shimbun in Kashiwazaki. “But TEPCO’s corporate culture of trying to cover up things and form collusive ties with authorities has not been overhauled. In my latest book, I wrote about all that I saw.”
Assigned to the utility’s main office in Tokyo, Hasuike, who had an engineering background, was primarily involved in work responding to nuclear regulators’ safety inspections of TEPCO’s plants as well as research into the disposal of high-level radioactive waste.
He said he documented a number of his experiences that epitomize the collusive ties between the utility and nuclear regulators before the 2011 Fukushima nuclear disaster.
Hasuike said these episodes made him question the feasibility of TEPCO’s new stated goal of pushing for organizational reform that puts safety management of its nuclear facilities above everything else.
Hasuike was born and raised in Kashiwazaki, Niigata Prefecture, a city that co-hosts TEPCO’s seven-reactor Kashiwazaki-Kariwa nuclear plant, the largest nuclear power station in Japan.
His parents and other relatives live in the coastal city.
The Diet’s Fukushima Nuclear Accident Independent Investigation Commission also pointed out TEPCO’s propensity to seek cozy ties with regulating bodies.
In its report published in 2012, the commission denounced collusion between TEPCO and the government’s nuclear watchdog, describing nuclear authorities as a “regulatory capture” of the company because they were easily manipulated by TEPCO’s vast wealth of nuclear expertise.
In his new book, Hasuike describes, for example, TEPCO’s moves related to the No. 6 and No. 7 reactors at the Kashiwazaki-Kariwa plant.
The company is currently seeking to bring those reactors back online as soon as possible to save on fuel costs needed to operate its thermal plants.
Hasuike said in the book that TEPCO sent some of its employees to the then Science and Technology Agency in 1990 on the pretext of “assisting in preparations” for a public hearing planned by the government’s Nuclear Safety Commission.
The agency’s commission was scheduled to hold a public hearing at the Niigata prefectural government building on whether to give approval and licenses for the construction of the No. 6 and No. 7 reactors at the Kashiwazaki-Kariwa plant.
The TEPCO employees were sent to the agency, where the commission’s secretariat was located, to check postcards sent by those hoping to attend the hearing. Specifically, TEPCO wanted to know their stance on nuclear energy and prevent the hearing from being dominated by anti-nuclear attendees, according to the book.
When they grasped the number of nuclear opponents who planned to attend, the TEPCO employees made arrangements to send several times that number of application postcards to the pro-nuclear energy camp to ensure their representation was larger than nuclear skeptics at the hearing, Hasuike wrote.
After the applicants were selected and those permitted to ask questions at the hearing were chosen, the TEPCO employees advised the pro-nuclear attendees on their proposed questions with the aim to make the plant look safe, according to the book.
Hasuike has also been known as a relentless critic of the government for its handling of the decades-old issue of Japanese nationals abducted by North Korean agents. He has appeared on TV programs and written several books on the subject.
His younger brother, Kaoru, returned to Japan in 2002 after being abducted to North Korea in 1978. But many other abductees remain unaccounted for, and there are few signs of progress toward a resolution of the issue.

Watchdog says TEPCO nuclear disaster drill ‘unacceptable’

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An emergency drill at Tokyo Electric Power Co.’s Kashiwazaki-Kariwa nuclear plant in Niigata Prefecture
August 22, 2018
The government’s nuclear watchdog slammed Tokyo Electric Power Co.’s efforts as “unacceptable” in communicating with nuclear authorities during an emergency drill held at its Kashiwazaki-Kariwa nuclear plant.
TEPCO, operator of the crippled Fukushima No. 1 nuclear power plant, was among three utilities to receive the lowest of the three-level scores in terms of ability to share information expediently and accurately, the Nuclear Regulation Authority said July 25.
It was the first time for the company to be given the lowest score on communication skills in a yearly drill.
“It is unacceptable that TEPCO received a low rating, given that it was responsible for the Fukushima disaster,” an NRA official said. “TEPCO appears to be too compartmentalized for its relevant sections to work together and share information.”
The NRA is set to instruct the company to hold additional drills at the plant, which is located in Niigata Prefecture, if it receives another low rating.
The utility was slow in relaying information to the watchdog, and its briefing on its handling of the mock accident was inadequate, according to the NRA’s report.
“We could not respond sufficiently because the envisioned accident was harsh,” said Kiyoto Ishikawa, the chief of the plant’s publicity department, at a news conference.
The drill in question was carried out in March under the scenario of coping with a serious accident.
It involved difficult procedures to cope with a failure in the communication system to send such critical information as the pressure level in the reactors’ containment vessels to the NRA. Operators also simulated a string of maneuvers of the venting system to lower pressure inside the No. 6 reactor that suffered core damage.
“We had to deal with a tough situation because it proceeded with less time allotted for us than in a real accident,” Ishikawa said. “We are determined to make more efforts and improve our standing.”
The NRA’s assessment comes at a time when TEPCO seeks to bring the No. 6 and No. 7 reactors at the Kashiwazaki-Kariwa plant back on line in the near future to save expensive fuel costs incurred by the operation of its thermal power plants.
With seven reactors, the Kashiwazaki-Kariwa plant is the largest in Japan. It is the only nuclear complex for TEPCO to turn to as it proceeds with decommissioning of the Fukushima No. 1 and No. 2 nuclear plants.
The two reactors have cleared the screenings by the NRA under the stricter reactor regulations put in place following the 2011 Fukushima triple meltdown.
The other plants that were rated on par with the Kashiwazaki-Kariwa plant in the evaluation of emergency drills were Hokuriku Electric Power Co.’s Shika plant in Ishikawa Prefecture and Chubu Electric Power Co.’s Hamaoka plant in Shizuoka Prefecture.
In the case of the Shika plant, Hokuriku Electric’s in-house information sharing system got bogged down, making it impossible for the NRA to remain in the communication loop.
In total, 10 operators of nuclear power plants carried out emergency drills.
The NRA considers it vital for the operator of a nuclear plant to share accurate information on the accident since the prime minister declares a “nuclear emergency” based on the NRA’s report.
In the Fukushima disaster, TEPCO had trouble passing on information on the unfolding nuclear crisis with the government swiftly and accurately, resulting in confusion.

TEPCO seeks nuclear power industry tie-up with key players

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Tokyo Electric Power Co.’s Fukushima No. 2 nuclear plant
August 22, 2018
Tokyo Electric Power Co. Holdings Inc., operator of the crippled Fukushima No. 1 nuclear power plant, has begun talks with the nuclear industry’s key players about a possible tie-up for maintenance and management services and decommissioning of reactors.
The company is in discussions with Chubu Electric Power Co., Hitachi Ltd. and Toshiba Corp., according to sources.
If the talks go well, a consolidation of the nuclear industry could be in the cards, the sources said.
TEPCO seeks to restart two of the seven reactors at its Kashiwazaki-Kariwa plant in Niigata Prefecture in the near future. Both are boiling water reactors, the same type as those that are to be decommissioned at the Fukushima No. 1 nuclear plant.
TEPCO operates 11 boiling water reactors, seven of which are located at the Kashiwazaki-Kariwa plant. The remainder are located at the Fukushima No. 2 nuclear plant.
However, the utility announced in June it would pull the plug on the Fukushima No. 2 nuclear plant, which suffered damage in the 2011 Great East Japan Earthquake and tsunami and narrowly escaped a serious disaster like at its sister plant.
Chubu Electric also operates three boiling water reactors at its Hamaoka nuclear plant in Shizuoka Prefecture. The plant’s two other reactors are in the process of decommissioning.
Hitachi and Toshiba were both involved in the design and construction of those reactors.
The four parties seek to streamline their nuclear energy operations through cooperation in maintenance and management services as well as safety management of their facilities after the restarts of their reactors.
Utilities today face an exceedingly higher price tag for bolstering safety precautions at their plants that are required under the stricter new reactor regulations put in place in the wake of the 2011 Fukushima No. 1 disaster.
With none of their reactors back online, TEPCO and Chubu Electric fell behind other utilities.
Kansai Electric Power Co. and other operators of pressurized water reactors have restarted their plants.
Meanwhile, work to decommission reactors is looming large for TEPCO and other utilities, as many reactors are aging and nearing their 40-year life span.
The four companies are also expected to discuss possible construction of new nuclear plants in the coming years.
TEPCO plans to call on other electric power companies to join a consortium it seeks to set up in fiscal 2020 in connection with its project to construct the Higashidori nuclear plant in Aomori Prefecture. The construction of the facility has been suspended since the quake and tsunami.