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TEPCO reports coolant solution leakage at Fukushima nuclear plant

University students rally in front of the Japanese Embassy in South Korea to protest the Japanese government’s decision to dump nuclear wastewater into the sea, in Seoul, April 14, 2021. /CFP

23-Jan-2022

Tokyo Electric Power Company (TEPCO), the operator of Japan’s crippled Fukushima nuclear power plant, has discovered that a coolant solution used to create an ice wall halting groundwater seepage into the reactor buildings has leaked from two storage tanks, Reuters reported on Sunday.

The company claims that there has been no impact on the wall or the environment, according to the report.

Still, it underscores the unpredictable challenges in the clean-up of the site, nearly 11 years after an earthquake and tsunami ravaged Japan’s northeastern coast, causing the world’s worst nuclear disaster since the Chernobyl accident in 1986.

On Sunday, TEPCO spokesperson Tsuyoshi Shiraishi said about four tonnes of a calcium chloride solution used to maintain the ice wall had leaked for the eighth time.

In the last such accident in December 2019, 16 tonnes spilled, likely due to metal fatigue resulting from vibrations caused by construction vehicles, Shiraishi said, adding that TEPCO is “now confirming the reason.”

There was no immediate impact on the wall’s function as it takes several months for the wall to thaw in the absence of coolant, he said.

Work on the underground frozen wall around unit 1-4began in June 2014 to block the flow of groundwater into the plant’s basements, according to China Media Group.

The 1.5-kilometer wall, which became operational in 2017, is made up of 1,568 pipes filled with a refrigerant and inserted 30 meters underground, turning the soil into a solid mass.

Only last year, Japan’s government approved the release of over 1 million tonnes of irradiated water from the site after treatment, starting around spring 2023. TEPCO last month said it would build a tunnel reaching into the sea for the operation.

Separately, a group of six men and women is set to file on January 27 a lawsuit against TEPCO claiming they developed thyroid cancer due to exposure to radiation from the Fukushima disaster, the Mainichi newspaper reported.

https://news.cgtn.com/news/2022-01-23/TEPCO-admits-coolant-solution-leaked-at-Fukushima-nuclear-plant-173qEVNvCPm/index.html

January 24, 2022 Posted by | Fuk 2022 | , , | Leave a comment

Coolant solution leaks at Fukushima Daiichi plant

The frozen wall was a temporary solution for maximum 7 years and the time has run out anyway.

Jan. 22, 2022

The operator of the crippled Fukushima Daiichi nuclear power plant says coolant solution used to create a frozen soil wall around reactor buildings has leaked.

The underground barrier is meant to block groundwater from flowing into the reactor buildings that were damaged as a result of the 2011 earthquake and tsunami.

Tokyo Electric Power Company has been using a calcium chloride solution to maintain the barrier. The firm has been storing the liquid at minus 30 degrees Celsius in four tanks.

TEPCO says liquid levels in two of the tanks dropped on January 16. It says its workers found a pool of the solution near the wall and estimated roughly 4 tons of it had leaked.

The utility says the wall remains capable of keeping groundwater out as it takes several months before the barrier begins to thaw. It adds that the solution does not harm the environment.

TEPCO says the pipe circulating the solution may have been partially damaged. It says it will pinpoint the damaged section and fix it as soon as possible.

January 24, 2022 Posted by | Fuk 2022 | , , | Leave a comment

Japan’s Tepco hit by setback in clean-up of crippled Fukushima nuclear plant

Good faith does not exist in Tepco’s dictionary!

TOKYO, Jan 23 (Reuters) – The operator of Japan’s crippled Fukushima nuclear power plant has found that a coolant solution, used to create an ice wall halting the seepage of groundwater into reactor buildings, has leaked from two storage tanks.

The leakage has had no impact on the wall or environment, said Tokyo Electric Power Co Holdings Inc (Tepco) (9501.T).

Still, it underscores the unpredictable challenges in the clean-up of the site, nearly 11 year after an earthquake and tsunami ravaged Japan’s northeastern coast, causing the world’s worst nuclear disaster since Chernobyl, Ukraine, in 1986.

Only last year, Japan’s government approved the release of over 1 million tonnes of irradiated water from the site after treatment, starting around spring 2023. Tepco last month said it would build a tunnel reaching into the sea for the operation. read more

On Sunday, Tepco spokesperson Tsuyoshi Shiraishi said about four tonnes of a calcium chloride solution used to maintain the ice wall had leaked in what was the eighth such leakage.

“We’re now confirming the reason,” he said.

The last leak in December 2019 saw 16 tonnes spilled, likely due to metal fatigue resulting from vibrations caused by construction vehicles, Shiraishi said.

There was no immediate impact on the wall’s function as it takes several months for the wall to thaw in the absence of coolant, he said.

Separately, a group of six men and women is set to file on Jan. 27 a lawsuit against Tepco claiming they developed thyroid cancer due to exposure to radiation from the Fukushima disaster, the Mainichi newspaper reported.

The plaintiffs, who were minors living in Fukushima prefecture at the time of the 2011 disaster, are seeking 616 million yen ($5.42 million) in compensation from the electricity provider, the Mainichi said.

If the complaint was served, Tepco would respond in good faith after hearing the contents of the claims and arguments in detail, the firm said in a statement.

https://www.reuters.com/world/asia-pacific/japans-tepco-hit-by-setback-clean-up-crippled-fukushima-nuclear-plant-2022-01-23/

January 24, 2022 Posted by | Fuk 2022 | , , | Leave a comment

Leakage of 4 tons of liquid at minus 30 degrees Celsius at Fukushima Daiichi Nuclear Power Plant

The frozen wall was a temporary solution for maximum 7 years and the time has run out anyway.

January 23, 2022

There was a problem at the Fukushima Daiichi Nuclear Power Plant where about 4 tons of liquid leaked out of a pipe that was injected into the ground to freeze the ground as part of the “frozen earth wall” that forms an “ice wall” around the buildings to prevent the inflow of underground water. Tokyo Electric Power Company (TEPCO) believes that a part of the pipe may have been damaged, and has decided to hurry to identify the location and repair it.

According to TEPCO, on January 16, the water level dropped in two of the four tanks that contain liquid at minus 30 degrees Celsius, which is used to freeze the ground around the buildings at the Fukushima Daiichi Nuclear Power Plant, and when they checked the area around the frost wall, they found a place where this liquid had accumulated.

The leaked liquid is a calcium chloride solution that acts as a “refrigerant” to freeze the ground, and it is estimated that about 4 tons of the liquid leaked from the water level of the tanks.

Even if the refrigerant leaks out, there is still a few months before the freezing wall itself starts to melt, so it is still functioning to prevent the inflow of groundwater, according to the report.

Tokyo Electric Power Company (TEPCO) believes that part of the pipe may have been damaged, and is hurrying to identify the location and repair it.

The freezing wall has been in operation since 2016, but last year some parts of the freezing wall experienced problems with the underground temperature remaining above 0 degrees Celsius, and TEPCO is investigating the cause and taking countermeasures.
https://www3.nhk.or.jp/news/html/20220123/k10013445291000.html?fbclid=IwAR06soHF-koVniJxnYVyMeADSSul3AXZTrGbMAW7folqVBtmfgk93cS5TLs

January 24, 2022 Posted by | Fuk 2022 | , , | Leave a comment

Trickle of residents return to Fukushima’s last deserted town

Futaba, whose population of around 5,600 was forced to flee over radiation fears, had been the final deserted municipality in the Fukushima region

Jan. 21, 2022

TOKYO – Five former residents of the last remaining uninhabited town near Japan’s stricken Fukushima nuclear plant returned on Thursday to live there for the first time since the 2011 disaster.

Following extensive decontamination, numerous areas around the plant in northeast Japan have been declared safe after a huge earthquake and tsunami triggered a meltdown over a decade ago.

TV footage showed the returnees inspecting the buildings, with one testing a tap outside his house.

“It’s out! This is the first time in 10 years and 11 months that running water comes out,” he said.

Futaba, whose population of around 5,600 was forced to flee over radiation fears, had been the final deserted municipality in the Fukushima region.

But restrictions were lifted in a small part of the town in March 2020 and the government is preparing to lift the cordon on a wider area later this year.

A local official told AFP that five people from four households are returning to live in Futaba on a trial basis, the first of just 15 people who have applied to a scheme, working towards a permanent return to the town.

The group had already been back to visit Futaba, but Thursday marks the first time they will stay overnight.

They can live there as part of the trial until at least June, when the wider cordon is expected to be lifted and their residence can become permanent, the official said.

The scheme “aims to ensure that residents will be able to live without problems, by, for example, checking if the sewers function well and there are facilities to support everyday life”, a cabinet office official in charge of supporting Fukushima residents told AFP.

More than 18,400 people died or remain missing after the 9.0-magnitude quake and tsunami on March 11, 2011 which sparked the nuclear disaster at the Fukushima Daiichi plant.

The government has undertaken an extensive decontamination programme in the region, literally scraping layers of topsoil, among other methods to remove radiation.

It has gradually declared areas safe for residents to return, with just 2.4 percent of the prefecture still covered by no-go orders as of last year.

But in some places, evacuees have been reluctant to return even after measures are lifted, worried about persistent radiation or fully resettled in other places.

https://japantoday.com/category/national/trickle-of-residents-return-to-fukushima%27s-last-deserted-town

January 24, 2022 Posted by | Fuk 2022 | , , | Leave a comment

Beer made with Fukushima rice launched in HK

Beer anyone? NO THANKS!

Jan. 21, 2022

A brewery in Hong Kong has unveiled a craft beer made with rice grown in Fukushima Prefecture, northeastern Japan. Hong Kong restricts imports of many agricultural products from the prefecture following the 2011 nuclear accident, but rice is allowed in.

The company invited the media and Consul-General of Japan, Okada Kenichi, to a launch event on Kowloon Peninsula on Thursday.

It produced the beer at the request of Fukushima Prefecture and Japan Agricultural Cooperatives, or JA.

It is made with a brand of rice called “Ten-no-tsubu”.

JA says Hong Kong imports 3 tons of Ten-no-tsubu rice every year. The craft beer will be sold at events promoting foods from Fukushima Prefecture.

The head of JA’s Hong Kong office says he wants people there to learn about the rice brand, so it will lead them to buy other food products from the prefecture.

https://www3.nhk.or.jp/nhkworld/en/news/20220121_16/

January 24, 2022 Posted by | Fuk 2022 | , , | Leave a comment

6 people to sue TEPCO over thyroid cancer after Fukushima nuclear disaster

How may Tepco use now the word “sincerely” when they have shown the whole world their dishonesty and their lack of sincerity repeatedly for the past 10 years?

Kenichi Ido, left, head of the legal team for a group of plaintiffs set to sue TEPCO over thyroid cancer, speaks during a press conference in Tokyo on Jan. 19, 2022. (Mainichi/Kazuhiro Toyama)

January 21, 2022 (Mainichi Japan)

TOKYO — A group of six young men and women is set to file a class action suit against Tokyo Electric Power Company Holdings Inc. (TEPCO) claiming that they developed thyroid cancer due to exposure to radiation emanating from the Fukushima nuclear disaster, and demand the utility pay a total of 616 million yen (about $5.4 million) in compensation.

It will be the first group lawsuit in Japan by those who were minors at the time of the 2011 nuclear disaster and have since been diagnosed with thyroid cancer.

The plaintiffs, now aged between 17 and 27, were living in Fukushima Prefecture when the nuclear meltdowns occurred at the Fukushima Daiichi Nuclear Power Station in March 2011, and developed thyroid cancer after the disaster. They are filing the damages suit with the Tokyo District Court on Jan. 27, according to the legal counsel for the plaintiffs who revealed the plan at a press conference on Jan. 19.

An expert investigation committee set up by the Fukushima Prefectural Government has not recognized the causal relationship between radiation exposure from the Fukushima disaster and thyroid cancer, and whether there is such a correlation could be the focal issue in the lawsuit.

The six plaintiffs were aged between 6 and 16 at the time of the nuclear disaster. They were diagnosed with thyroid cancer between 2012 and 2018. Two of them had one side of their thyroid removed, while the other four had their thyroid fully extracted and need to take hormonal drugs for the rest of their lives. One of the patients had cancer spread to their lungs. Some of them currently reside in Tokyo and Kanagawa Prefecture.

The Fukushima Prefectural Government has conducted a survey on thyroid glands covering some 380,000 people aged 18 or younger who were living in Fukushima Prefecture at the time of the nuclear catastrophe. As of June 2021, 266 people had been diagnosed with thyroid cancer or suspected thyroid cancer. According to the legal team for the plaintiffs, five of the six complainants had their cancer detected in the prefectural survey. The remaining plaintiff found out about their cancer through testing at a hospital they voluntarily underwent.

According to the legal counsel, the cancer discovery rate in the Fukushima Prefecture survey stands several tens of times higher than usual. While the prefectural government points to the possibility of “overdiagnosis” through which many cancer cases requiring no treatment have been found, the plaintiffs’ cancer has actually progressed, the legal team asserted. The lawyers argue that none of the six plaintiffs’ cancer is hereditary, and that it is extremely highly likely that they developed their conditions due to the nuclear disaster.

In past pollution lawsuits including those over Minamata disease, there is a court precedent in which the company responsible for the pollution was ruled liable for compensation unless it could prove there was no causal relationship between the contamination and the plaintiffs’ diseases. The attorneys for the upcoming lawsuit claim that this decision could also be applied to nuclear plant accidents and that TEPCO should bear the burden of proving the absence of a causal link between radiation exposure and thyroid cancer.

Kenichi Ido, head of the legal counsel, commented, “Some plaintiffs have had difficulties advancing to higher education and finding jobs, and even given up on their dreams for their future.”

TEPCO released a comment saying, “We will respond to the case sincerely after hearing the content of their claims and their arguments in detail.”

(Japanese original by Kazuhiro Toyama, Tokyo City News Department)

https://mainichi.jp/english/articles/20220121/p2a/00m/0na/018000c

January 24, 2022 Posted by | Fuk 2022 | , , , , | Leave a comment

Tepco sued over thyroid cancer cases – 6 people aged 6-16 at time of Fukushima nuclear accident – Tokyo District Court

Kenichi Ido, a former judge and head of the legal team, pointed out that “the Japanese government is assuming that there is no health damage caused by the accident. Hiroyuki Kawai, a lawyer, said, “There is strong social pressure to believe that cancer is not caused by the accident, and it took a lot of courage for the six people to file the lawsuit, which is why the time has come.

Lawyers hold a press conference on the policy of filing lawsuits for six people who have developed thyroid cancer in Chiyoda Ward, Tokyo on the afternoon of March 19.

January 19, 2022

Six people who were between the ages of 6 and 16 years old at the time of the accident at the Fukushima No. 1 Nuclear Power Plant of Tokyo Electric Power Co. On April 19, it was learned that six people, aged 6-16 at the time of the accident and living in Fukushima Prefecture, will file a lawsuit against TEPCO in the Tokyo District Court, seeking a total of 616 million yen in damages. This is believed to be the first lawsuit in which residents are suing for damage caused by the nuclear accident on the grounds that they have developed thyroid cancer.

The legal team representing the six revealed this at a press conference on the same day. The lawsuit is scheduled to be filed on the 27th.
 According to the lawyers, the six are currently residing in Tokyo, Kanagawa, and Fukushima prefectures. Four of them have had their thyroid glands surgically removed, and some have undergone multiple surgeries because of metastasis or recurrence.
 The Fukushima Prefectural Health Survey, which covers about 380,000 people who were under the age of 18 at the time of the accident, revealed 266 cases of cancer or suspected cancer in its report last October. In October last year, it was revealed that 266 people had cancer or suspected cancer. Some experts have pointed out the possibility of “over-diagnosis,” in which cancers that do not require treatment are found, but the lawyers are claiming that all six of the cases required surgery, and that this was due to the accident.
 On the other hand, the review committee for the prefectural health survey has stated that radiation is unlikely to be a factor in the development of thyroid cancer.
 Kenichi Ido, a former judge and head of the legal team, pointed out that “the Japanese government is assuming that there is no health damage caused by the accident. Hiroyuki Kawai, a lawyer, said, “There is strong social pressure to believe that cancer is not caused by the accident, and it took a lot of courage for the six people to file the lawsuit, which is why the time has come.
 TEPCO commented, “If the complaint is served, we will respond in good faith.
https://www.jiji.com/jc/article?k=2022011900881&g=soc&fbclid=IwAR0jA-AAx_XojY5Yngsp4n7eU8UrPgEU8A66AiSEXanInMIleC49saU_MWE

January 24, 2022 Posted by | Fuk 2022 | , , , , | Leave a comment

Signatures submitted to Tokyo High Court for site inspection, totaling 10,195

Jan. 21, 2022

On the morning of January 21, in the cold wind, the Fukushima Nuclear Power Plant Criminal Litigation Support Group submitted the third round of signatures to the Tokyo High Court to demand that the presiding judge of the 10th Criminal Division of the Tokyo High Court, Keisuke Hosoda, decide on the on-site inspection and examination of witnesses.

 In the criminal trial of the three former TEPCO executives who were forcibly indicted, the appeal trial at the Tokyo High Court started in November last year, and the key is to realize the on-site verification by the judges who were not employed in the first trial.

 At the second trial on February 9 at 2:00 p.m., the decision on whether or not to hold the on-site inspection and witness examination will be made, and this will be a major turning point in the appeal trial.

 At 10:30 a.m. on the morning of the 21st, more than 100 citizens gathered in front of the Tokyo High Court, despite the bitter cold, and the leader of the support group and lawyers representing the victims, Kaito and Okawa, appealed to the Tokyo High Court to conduct on-site inspection and questioning of witnesses.

 A little after 11:00 a.m., the leader of the support group and other representatives of the group, including attorneys Kaito and Okawa, submitted their signatures to the Criminal Division 10 of the Tokyo High Court. A total of 10,195 signatures were submitted so far, including 2,151 for the third round.

 While taking measures against coronary infection, the participants once again confirmed that they would rally for the second trial on February 9 at 2:00 p.m., aiming for victory in the appeal trial of the Fukushima nuclear power plant criminal trial to hold TEPCO responsible for the Fukushima Daiichi nuclear power plant accident.

https://skazuyoshi.exblog.jp/29816568/?fbclid=IwAR1eoQIEW3YpTVXKb40E1jjCU5WTc0jdY68se5UGvBVorywP8UEFMxB5ro0

January 24, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Robot for removing nuclear fuel debris at Fukushima Daiichi

19 janv. 2022

Footage of a robot developed to remove nuclear fuel debris from the No. 2 reactor at the Fukushima Daiichi nuclear power plant is released.

January 20, 2022 Posted by | Fuk 2022 | , , , | Leave a comment

Six people to sue Tepco over thyroid cancer after Fukushima disaster

The No. 1 and No. 2 reactor buildings of the Fukushima No. 1 nuclear power plant in Fukushima Prefecture

Jan 19, 2022

Six people are set to sue Tokyo Electric Power Company Holdings Inc. over thyroid cancer that they claim they developed due to exposure to radioactive substances released from the 2011 triple reactor meltdown at its stricken Fukushima No. 1 nuclear power plant, their lawyers said Wednesday.

The plaintiffs, who were between the ages of 6 and 16 at the time of the nuclear disaster and lived in Fukushima Prefecture, home to the plant, will seek ¥616 million in total damages.

This is believed to be the first lawsuit involving Fukushima Prefecture residents suing Tepco over thyroid cancer in connection with the nuclear disaster.

The six plan to file the suit with Tokyo District Court on Jan. 27, the lawyers said during a news conference.

They currently live in Tokyo, Kanagawa Prefecture and Fukushima Prefecture. Four of them have had their entire thyroid glands removed, the lawyers said. Some have undergone multiple rounds of surgery because of cancer metastasis or recurrence, they said.

A health survey by the Fukushima prefectural government, which covered some 380,000 people age 18 or younger at the time of the disaster, showed in October last year that 266 people had cancer or suspected cancer.

Some experts have pointed out the possibility of overdiagnosis, or the discovery of cancers that do not require treatment. The lawyers claimed that the plaintiffs developed cancer due to the nuclear disaster and needed to undergo surgeries.

A review committee on the prefectural health survey has said that the thyroid cancer apparently has nothing to do with what happened at the Fukushima No. 1 plant in March 2011.

Kenichi Ido, a former judge who leads the lawyers, criticized the Japanese government for determining that there has been no health damage from the disaster.

Lawyer Hiroyuki Kawai said that “there is strong social pressure to believe that cancer is not caused by the accident, so it took a lot of courage for the six plaintiffs to file the lawsuit.”

January 20, 2022 Posted by | Fuk 2022 | , , , , | 1 Comment

Taiwan’s KMT says public health most important when considering Fukushima food imports

KMT Chairman Eric Chu says party gathering data to ‘defend the health of Taiwanese’

Kuomintang (KMT) Chairman Eric Chu

2022/01/16

TAIPEI (Taiwan News) — Kuomintang (KMT) Chairman Eric Chu (朱立倫) on Saturday (Jan. 15) commented on the issue of importing food products from Fukushima, Japan, saying the party prioritizes the health of Taiwanese.

China Broadcasting Chair Chao Shao-kang (趙少康) recently stated he could not believe the KMT had released a press release saying that “as long as Japan can guarantee the safety of food imported to Taiwan, the KMT will agree to import nuclear food from Japan.” “I almost fainted when I read it,” Chao said.

In response to his remark, Chu said in a media interview that the KMT is “absolutely 100% opposed” to anything that harms the health of Taiwanese and that the party must stand with the public, CNA reported.

He said that if the Democratic Progressive Party is promoting imported Fukushima food products in pursuit of political interests, the KMT will never approve of this.

The KMT Central Committee, KMT-led local governments, and party think tanks will join together to collect scientific evidence and data to “defend the people’s health,” Chu added.

https://www.taiwannews.com.tw/en/news/4411750

January 19, 2022 Posted by | Fuk 2022 | , | Leave a comment

Six people who were children at the time of the accident are suing TEPCO, claiming that they developed thyroid cancer due to exposure to radiation from the Fukushima Daiichi Nuclear Power Plant accident.

A woman has decided to file a lawsuit against TEPCO. She will have to have her entire thyroid gland removed and continue taking the medication in her hand for the rest of her life in Fukushima Prefecture.

January 19, 2022
 Six men and women between the ages of 17 and 27 who were living in Fukushima Prefecture at the time of the accident filed a lawsuit against TEPCO on January 27, claiming that they developed thyroid cancer due to radiation exposure caused by the accident at TEPCO’s Fukushima Daiichi Nuclear Power Plant. On April 27, six men and women aged 17 to 27 who were living in Fukushima Prefecture at the time of the accident filed a lawsuit against TEPCO in the Tokyo District Court, seeking a total of 616 million yen in damages. According to the lawyers, this is the first time that patients who developed thyroid cancer as children are suing TEPCO because of the nuclear accident. (Natsuko Katayama)
Defense: “We can’t think of any cause other than radiation exposure.
 The lawsuit is filed by four people who lived in Fukushima City and Koriyama City, and one each in the Aizu region in the western part of the prefecture and the Hamadori region in the eastern part of the prefecture. They were between the ages of 6 and 16 at the time of the accident, and are now high school students or working as office workers or part-time employees in the prefecture or in Tokyo.
 Two have had one side of their thyroid gland removed, four have had total thyroidectomy due to recurrence, and are undergoing or planning to undergo radiation therapy. Some have had four operations and others have metastasized to the lungs. Some have had four surgeries and others have had their lungs metastasized. The treatments and surgeries have forced them to give up their desired jobs, drop out of college, or retire. They are not only worried about relapse, but also about whether they will be able to get married or have children.
 The lawyers argued that most of the thyroid cancers found in the children, including the six, were papillary cancers, which were confirmed in children and young adults after the Chernobyl nuclear accident, and that they were not hereditary and could not be caused by anything other than radiation exposure. Kenichi Ido, the head of the legal team, said, “Many of the cancers have recurred, so it is hard to imagine overdiagnosis. TEPCO should admit that the cause of the cancer was the nuclear accident and provide relief as soon as possible.
The expert panel’s position is that a causal relationship cannot be established.
 With regard to the causal relationship between exposure to radiation from the nuclear power plant accident and thyroid cancer, the Fukushima prefectural government’s expert panel has taken the position that “no causal relationship can be recognized at this time.
 Since the nuclear accident, the prefecture has been conducting tests for thyroid cancer as a part of the prefectural health survey for a total of about 380,000 people who were under the age of 18 at the time of the accident and who were born before April 1, 2012 (including those who evacuated from the prefecture).
 Normally, the incidence of pediatric thyroid cancer is estimated to be about one to two cases per one million people per year, but according to the survey and other findings, by June last year, about 300 people had developed thyroid cancer or thyroid cancer-related diseases. By June last year, however, about 300 people had been diagnosed with thyroid cancer or suspected of having thyroid cancer. All the medical expenses are covered by the “Prefectural Health Care Fund” established with financial support from the government and compensation from TEPCO.
 The expert panel is continuing to investigate the results of the diagnoses, saying, “It has been pointed out that there is a possibility of over-diagnosis, finding cancers that do not need treatment in the future.
https://www.tokyo-np.co.jp/article/154959?fbclid=IwAR06xqKA6vo3utW1-lfN3PIkFiBnS20b6BMD1WAXyzUo5yJKMzU3KU5elGs

January 19, 2022 Posted by | Fuk 2022 | , , , , | Leave a comment

Fukushima Daiichi Hit By Tsunami

Japan has lifted all tsunami advisories and warnings.

Japan has reduced one of the tsunami warnings, left one in place, and left the alerts for the entire south and east coasts in force. The Japan Meteorological Agency told people to remain vigilant and not return to low coastal areas. The JMA representative mentioned they do not know the exact mechanism that created the tsunami waves and they don’t know if the danger has passed.

Japan’s nuclear regulator and TEPCO have not released any information about conditions at Daiichi or any of the other coastal nuclear power plants in Japan. Another relevant concern is the large piles of contaminated soil bags that have been stored along the Fukushima coast on beaches and along low-lying areas of river banks near the coast. The inundation levels could put these bags at risk of being swept out to sea.

NHK TV reported that Onahama Port, near Fukushima Daiichi received increasing tsunami waves from the Tonga volcano explosion.
The waves in some areas around the Fukushima coast and Tohoku region reached 1 meter in height while Onahama port were at 70cm and continued to increase.

The existing defenses at Daiichi should have been sufficient to handle the wave inundation but there was equipment in the port that remained unprotected and a few low lying sea front
areas that could have been vulnerable.

TEPCO on January 17 has released some initial reporting on damage at Fukushima Daiichi.

The seafront water intake equipment for units 5 & 6 remained functional as did some equipment related to the sub-drain sump pump system around units 1-4. Visual inspection of silt fences on the port openings indicated they were intact. Certain silt fences are now scheduled to be pulled up and inspected further. TEPCO noted that the MegaFloat that is still housed in the port was undamaged. This was relocated and tethered in a more sheltered portion of the port a few years ago when it was identified as a risk in the event of a tsunami. TEPCO did not mention the condition of a construction rig in the port conducting initial work for the contaminated water discharge pipe.

TEPCO typically releases information from an initial visual walk down after a major event. Subsequent reports may identify more damage as they look further.

TEPCO report in Japanese.
https://www.tepco.co.jp/decommission/information/newsrelease/reference/pdf/2022/1h/rf_20220117_4.pdf

January 19, 2022 Posted by | Fuk 2022 | , | Leave a comment

Robotic failure: “We don’t know the cause, and the outlook is unclear…” High barrier to internal investigation of high radiation dose at Fukushima Daiichi Nuclear Power Plant Unit 1

January 15, 2022

Due to a robot malfunction, an internal inspection of the Unit 1 reactor at TEPCO’s Fukushima Daiichi Nuclear Power Plant (located in the towns of Okuma and Futaba in Fukushima Prefecture) has not been able to begin. The radiation level inside the containment vessel, where melted nuclear fuel (debris) remains, is too high for people to approach. The work, which requires remote control, has had a series of problems. As the eleventh anniversary of the accident approaches, a high wall continues to block the way. (Kenta Onozawa)


Advance preparations were too lax.
 We didn’t know the cause of the accident. We don’t know the cause, we don’t know the prospects for countermeasures, and we haven’t decided when to resume the investigation.
 At a press conference on March 13, a TEPCO spokesman gave a vague answer. The internal investigation of the Unit 1 reactor, which was delayed for more than two years from the original plan, was supposed to start on the 12th, but it stalled right from the start.
 Of the three reactors that suffered meltdowns, Unit 1 is the only one where no debris has been found. The survey this time has been planned with a lot of effort to make up for the delay, including the use of six different types of robots with multiple functions, and the survey will take about seven months.
 The first underwater robot (25 centimeters in diameter and 111 centimeters in length) will be used to create a survey route. A 30-centimeter-diameter guide ring will be attached to the robot so that subsequent robots can pass through it to prevent cables from getting tangled, which the spokesperson stresses is essential for the survey.

Status of Containment Vessel Survey at Fukushima Daiichi Nuclear Power Plant


However, the preparations in advance were lax. The preliminary tests were limited to confirming the operation of each piece of equipment, and the team was unable to immediately respond to problems with the dosimeters that occurred when they were operated simultaneously.


In the past, there have been cases of “leaving things behind.
 It is expected to take some time to identify the cause of the problem. If similar problems occur with other robots, plans to take images of the inside of the containment vessel, grasp its three-dimensional structure, and collect sand-like deposits in the water will not be able to proceed and may be abandoned.
 We know from previous studies that complex devices are less effective, such as the underwater robot that photographed debris deposits inside the containment vessel of Unit 3 in 2017. The underwater robot that photographed the debris in the containment vessel of the Unit 3 reactor in 2017 was about a quarter of the length and had a simpler structure. It also focused on photographing as its main purpose.
 In the 2006 survey that succeeded in photographing the debris in the Unit 2 reactor, a worker inserted a pipe (13 meters long) with a camera attached to the end, rather than a robot. In the previous year, a camera-equipped pipe was inserted. In the previous year, a camera-equipped robot called a “scorpion” was deployed, but it climbed up on the sediment and could not be retrieved, remaining in the reactor.


Although “human power” can be used to deal with the problem outdoors…
 Remote-controlled operations are always fraught with difficulties, even outside the building where the reactor is located.

TEPCO’s Fukushima Daiichi Nuclear Power Plant, where work to bring the accident under control is underway. From left: Unit 1 and Unit 2 in Okuma Town, Fukushima Prefecture.


 The exhaust stack near the Unit 1 and 2 buildings, which was in danger of collapsing due to the earthquake and was highly contaminated, was cut down to about 60 meters, half the height of the original stack (1 In one case, the saw blade of a cutting device lifted by a large crane got stuck in the cylinders and could not be moved. At that time, a worker climbed up to the cutting device installed at the top of the 110-meter-high cylinder with a crane and cut it with a power tool.
 In late January, they plan to cut the contaminated pipes leading to this exhaust stack. The project was originally supposed to start four months ago, but there was a problem with the remote-controlled cutting device and the crane broke down, delaying the plan.
 Debris collection is planned for Unit 2 by the end of the year. If a problem occurs in the reactor, we cannot rely on human power.
https://www.tokyo-np.co.jp/article/154269?fbclid=IwAR2E55S3DYLr7KiroYjxza6u_MX67pvMdrWioFykfOwgoxBdOlqhOraX9WI

Translated with http://www.DeepL.com/Translator (free version)

January 15, 2022 Posted by | Fuk 2022 | , , | Leave a comment