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Estimates of highly radioactive cesium-rich microparticles released by Fukushima disaster

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August 14, 2018

Scientists have for the first time been able to estimate the amount of radioactive cesium-rich microparticles released by the disaster at the Fukushima power plant in 2011. This work, which will have significant health and environmental implications, is presented at the Goldschmidt geochemistry conference in Boston.
The flooding of the Fukushima Daiichi Nuclear Power Plant (FDNPP) after the disastrous earthquake on March 11 2011 caused the release of significant amounts of radioactive material, including cesium (Cs) isotopes 134Cs (half-life, 2 years) and 137Cs (half-life, 30 years). Initially scientists thought that all Cs was released in soluble form. Now however, they have realized that a part of the released Cs was in the form of glassy microparticles, formed at the time of the reactor meltdown; these particles were thrown over a wide area, but until now there has been no reliable estimate of how much radioactive cesium-rich microparticles was deposited in the surrounding area, and how this material was distributed.

Now a group of international scientists, led by Dr. Satoshi Utsunomiya (Associate Professor of Kyushu University, Fukuoka, Japan) has been able to give the first accurate estimates of the amount of the radioactive microparticles in the environment. This work describes the significance of the microparticles to current radiation levels, and provides fundamental data for a future re-evaluation of health risks from the highly radioactive microparticles which remain in the local environment.

“Most of the glassy microparticles are only a few microns in size, and were spread alongside the soluble cesium. The soluble cesium is generally bound to clay minerals after wet deposition, with the clay minerals also forming particles, so it was difficult to distinguish the cesium-rich microparticles from cesium absorbed on clay.” said Dr. Utsunomiya, “However, we realized that the cesium-rich microparticle has an extremely high radioactivity ~1011 Bq/g compared with the much lower radioactivity for cesium-sorbing clay particles, and this can be used to distinguish the two types. So we have established a novel procedure to quantify the cesium-rich microparticles by applying a quantitative autoradiography method”.

Autoradiography exposes a photographic film or detector to a radioactive source, which causes the radiation to show up on the film (medical X-rays is the most common autoradiography technique). The team determined the threshold radioactivity for Cs-rich microparticles in the sieved fraction based on the relation between photostimulated luminescence signal and radioactivity. They applied this method to soil samples from 20 affected areas.

Dr. Utsunomiya continued “In certain areas, these glassy particles are highly concentrated, so they are a major concern. We have found up to 318 of these particles in just 1 gram of soil, near the Fukushima Daiichi power plant. Most of these particles are still in the ambient environments, indicating the high stability.

Since the Fukushima accident we have been gradually coming to understand how the microparticles were distributed, and what this might mean to health and the environment. As you would expect, there are more radioactive particles nearer the reactor: we believe that there was a proportion of cesium released as soluble material, but we have found that the area south of the reactor contains a higher proportion of glassy particles. Our estimate is that around 78% of radioactive cesium was released as glassy particles. Many of the microparticles have been washed down from roofs and from plants, and have now gathered in radioactive hot spots.

Now that we have a better idea of the quantities involved and how the radiation has been distributed, it gives our team a better idea of how to approach the effect on health, which is obviously a major concern. This work does not imply that there is any additional radiation which has been missed—the total amount of cesium released at Fukushima remains the same. However, the glassy particles have concentrated the radiation, which means that there is still much new work to be done to understand how this concentrated radiation might affect health”

Commenting on the work, Dr. Ken Buesseler (Woods Hole Oceanographic Institution) said:

“The idea of microparticles has not been ‘missed’ in the assessment of total cesium levels in soil after Fukushima; it has been included, although this work highlights the fraction found in cesium microparticles. So we shouldn’t think that there is additional radiation to worry about, but nevertheless in this highly concentrated form it may have different health impacts. These researchers have done a fine job of developing new tools to quantify these microparticles, and that is an important story to tell”

More information: Ryohei Ikehara et al. Novel Method of Quantifying Radioactive Cesium-Rich Microparticles (CsMPs) in the Environment from the Fukushima Daiichi Nuclear Power Plant, Environmental Science & Technology (2018). DOI: 10.1021/acs.est.7b06693

Read more at: https://phys.org/news/2018-08-reliable-highly-radioactive-cesium-rich-microparticles.html#jCp

August 17, 2018 Posted by | Fukushima 2018 | , | Leave a comment

From Hiroshima: a powerful testimony of an evacuee of the Fukushima accident

 

August 10, 2018

Yoko Shimosawa, who evacuated from Tokyo to Kobe with two children, speaks from Hiroshima on August 6th at the occasion of the 73rd anniversary of the a-bomb.

Her powerful testimony is delivered in English and in Japanese.
The Japanese video and its transcription are placed below the English transcription.

“3 years ago today, many precious lives were instantly destroyed by the terrible blast and the heat from the atomic bomb. Did you know, however, that the atomic bomb has had another, lasting effects? It’s an invisible, quiet and lasting effects from the nuclear bombing, called “internal radiation exposure.”

7 years ago, Fukushima Dai-ichi Nuclear Power Plant had an accident and the nuclear accident developed into a nuclear disaster. Today, we Japanese have to live with this invisible and quiet nuclear bombing.
It’s a kind of invisible violence that quietly invades human bodies.

I would like to talk about the violence called “the internal radiation exposure” as an evacuee from the terrible nuclear disaster.

I evacuated to Kansai three years after the Fukushima nuclear power plant accident. Where do you think I evacuated from? I evacuated from Tokyo. Do you know that Tokyo has serious radioactive contamination? Tens of millions of people in East Japan live with radioactive contamination now.

My daughter was 5 years old at the time of the accident. She was a cheerful and active girl. But after one year since the accident, her health conditions became bad and she was troubled by strange symptoms.
She told me, “Mommy, I feel so bad, I have no power, My hands hurt, my legs hurt, my body hurts!”
In fact, my daughter became so sick that she could not live a normal life at all.

At that time, I met a doctor who was working with the issue of radiation exposure in the metropolitan area. He said, if sick children are moved to the west away from contaminated eastern Japan, some of them might recover health.

According to his examinations after the accident, the number of white blood cells of children living in the metropolitan area was decreasing. And he added that neutrophils among white blood cells were particularly badly decreasing. And as we found out later, our two children also had the same condition. Today, the doctor is saying that for every ten children in Tokyo, nine of them have below the standard number of neutrophils.

When I consulted the doctor about my daughter, he clearly stated that she was affected by the radiation exposure.
And he gave me advice to move my daughter to the western part of Japan.

In any case, I tried to move my sick daughter out of Tokyo. Whenever we stayed in a place where there was no radioactive contamination, she became very well. But when we returned to Tokyo, she became sick again. We did not have the option to stay in Tokyo any longer. We just fled from Tokyo and moved to Kansai.

Living in East Japan means living with many radioactive materials, and it is not a place where people can live in good health. So, as evacuees from eastern Japan, we are calling for evacuation to West Japan. Our existence here is not broadcasted on the radio nor published in newspapers. So, I am telling you about it here and now.

After the accident, we were told that radiation was not a problem and health damages would not occur. But it was not true. Many of us have evacuated from East to West due to various health problems. Many people are getting sick today in East Japan. People are dying without noticing that it is due to radiation. Many Japanese can not face this nuclear catastrophe.

Now my daughter is 12 years old. She’s healthy and enjoys everyday life. She has good friends and says she wants to continue living here forever.

She is very afraid that more and more nuclear power plants now will get restarted and there may be another accident. If that happens, she will have to move away from here again. If another nuclear accident happens, she knows that she can not live in this country anymore.

And accidents are not the only ones that threaten her. It is a basic issue that after the accident, our government has not confined radioactive materials to one place.
On the contrary, our government has a policy of diluting toxic radioactive waste by mixing it with water, cement or other materials, and making it look harmless.

And the Japanese government now allows incineration of highly contaminated nuclear waste of up to 8000 Bq/kg, 80 times as high as before the Fukushima accident. It’s all to reduce the enormous amount of nuclear waste. But as conscientious scientists say, we should never burn radioactive materials. It should never have been allowed.

We don’t seem to be able to stop this crazy, irresponsible way of our government.

I hope that my daughter can live in her beloved country where she was born and raised.

What the Japanese government is doing can be called a nuclear assault. This political nuclear bomb is being dropped over us slowly and penetrating into our daily lives.

We can protect precious LIFE of not only humans but also the LIFE of all living creatures from internal radiation exposure. How? By containing radioactive waste in the locations where they were made and by keeping the waste under strict control. We humans can also evacuate from contaminated areas and relocate.

But people can’t move out of the contaminated areas because central and local governments conceal the facts of contamination and victimization, killing many people just like powerful bombs do. That’s a kind of national war waged against its own people.

We deeply deplore such war situation and want to stop it. That’s why I am here speaking to you.

Let us work together so we can recover our country and our earth in which our children can grow up in good health.”

Read also Yoko Shimosawa’s testimony in this blog : Testimony of a mother who evacuated from Tokyo

Facebook page of Yoko Shimosawa

Facebook page Go West Come West 311

Go West Come West 311 web site in English

Go West Come West 311 日本語HP

Source: https://fukushima311voices.com/2018/08/10/from-hiroshima-a-powerful-testimony-of-an-evacuee-of-the-fukushima-accident/

August 17, 2018 Posted by | Fukushima 2018 | , , | Leave a comment

Tepco’s Sale of Souvenirs

I think Tepco should better sell diluted contaminated water as souvenirs. Why not If people are enough baka (dumb) to buy it and take it home. It is maybe finally a good solution for Tepco to dispose of all that accumulated radioactive water away from the plant site.
 

Tepco halts sale of folders with Fukushima nuclear plant pictures

FUKUSHIMA (Kyodo) — The operator of the crippled Fukushima nuclear plant has halted its sale of file folders with photos showing the current conditions of the complex due to public criticism, company sources said Wednesday.
“We received many views, including favorable ones. We will consider whether we can restart their sale (which began Aug. 1),” an official of the operator Tokyo Electric Power Company Holdings Inc. said.
The folders, offered in a set of three for 300 yen ($2.70), have pictures of the Nos. 1-4 units of the Fukushima Daiichi nuclear complex, stricken by the 2011 earthquake and tsunami disaster.
The operator known as Tepco said it sold them at two convenience stores on the premises of the Fukushima complex after people involved in work to scrap the plant asked the company to sell souvenirs. Tepco said it does not make any profit on the folders.
But there have been complaints from people who were offended by the folders.
A Tepco official involved in the folder sale has said, “As there are very few opportunities to show the real situation of the Fukushima complex, we wanted people to become aware of it through these goods.”
In one of the world’s worst nuclear crises, the Fukushima Daiichi plant on the Pacific coast suffered meltdowns at three of its six reactors, spewing radioactive materials in the surrounding environment.
Decontamination and other efforts are under way to enable people who lived near the disaster-stricken plant to return to their hometowns, while Tepco struggles with massive compensation payments and cleanup costs stemming from the disaster.
 

Tepco halts sales of souvenirs from Fukushima No. 1 nuclear plant following public outcry

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A plastic file folder is seen with pictures of Tepco’s Fukushima No. 1 nuclear power plant. The utility halted sales of the folders amid criticism it was looking to profit from the 2011 disaster at the plant.
Aug 9, 2018
Tepco suspended the sale of souvenirs at its crippled Fukushima No. 1 nuclear power plant Wednesday — just eight days after launching the products — following public outcry that it was looking to profit from the 2011 disaster.
Tokyo Electric Power Company Holdings Inc. had been selling plastic file folders imprinted with pictures of the Nos. 1 to 4 units at the crisis-hit plant at two of the facility’s convenience stores since Aug. 1, after receiving requests for memorabilia from visitors and workers.
But the sales by the utility immediately drew criticism with many people posting angry comments on social media. One comment said Tepco was responsible for the disaster and “had no right to profit from” it, adding that the move was “arrogant and showed scant consideration for the disaster victims.” Others said the plant operator should at least donate the proceeds from the sales to local residents and charities.
“We have received a wide variety of opinions over the past week and decided to suspend sales in order to reflect on those views and consider what would be the proper way to handle such merchandise,” Tepco spokeswoman Yuka Matsubara said.
Matsubara also said the utility is unsure if sales would ever resume.
She emphasized the company never intended to take profits from the sales as the ¥300 retail price for a set of three folders was almost the same as the production cost.
“We had learned that visitors and workers had been keeping the receipts they received from the convenience stores at the complex as souvenirs to show their families,” Matsubara said. “To allow visitors a chance to share their experiences and inform everyone that Fukushima is gradually recovering, we made the decision to sell souvenirs.”
After the sales of souvenirs were reported by several news outlets, mixed comments began appearing on Twitter.
A tweet by @mtycskni_ said, “I guess it would be proper to give away such things to the visitors who wish to have them” instead of selling them, while another from @potetohakusyaku asked, “Why don’t visitors buy local products made in Fukushima instead of such goods?”
The Fukushima plant that suffered nuclear meltdowns following the March 2011 earthquake and tsunami disaster is not open to the general public. Only plant workers, decommissioning support staff, media representatives, local politicians and residents are permitted on the grounds as long as they are 18 or older. Last year, 12,500 people visited the complex — up 1,800 from 2016.

August 17, 2018 Posted by | Fukushima 2018 | , , | Leave a comment

Child statue in protective suit in crisis-hit Fukushima unwelcomed for 2020 Olympics

Child statue in protective suit in crisis-hit Fukushima criticized

hkkllmm.jpgPassers-by look at Sun Child, a 6.2-meter statue clad in a protective suit, near JR Fukushima Station in northeastern Japan, on Aug. 12, 2018.

August 13, 2018
FUKUSHIMA, Japan (Kyodo) — The statue of a child clad in a protective suit set up near JR Fukushima station has sparked criticism that it gives the impression that Fukushima residents need such gear after the 2011 nuclear crisis.
The 6.2-meter statue called Sun Child was made by contemporary artist Kenji Yanobe to express his wish for a world free from nuclear disasters. The statue indicates the surrounding air is “clean” as the child is holding its helmet in its hand and a radiation counter on its chest reads “000.”
Yanobe apologized on his website Friday for “discomforting” some people with his artwork, which was created in the wake of the Fukushima Daiichi power plant meltdown and installed near JR Fukushima station in the city of Fukushima on Aug. 3.
“I wanted to make a work that encourages people (in Fukushima)…and made the statue of a child standing up bravely and strongly against any difficulties it faces,” he said. “The clothing looks like protective gear, but it is also armor to confront major issues and, being like a space suit, it also carries a futuristic image.”
But he admitted that his earlier explanation of the artwork — such as calling the clothing “protective gear” and the device on the statue’s chest a “Geiger counter” — may have led to misunderstanding.
Critical views were posted on Twitter and the city of Fukushima received calls demanding the statue’s removal. “The statue will encourage reputational damage because it gives an impression that people in Fukushima cannot live without protective gear,” one person said.
Others argued the statue was “unscientific” because it indicates that it would only be safe for someone wearing protective gear to take off a helmet when the radiation level falls to zero. Usually the radiation level is not zero even in areas not affected by nuclear accidents due to natural radiation.
Yanobe said in a statement, “I should have paid more attention to the fact that accurate knowledge about radiation is needed much more now than before the disaster.”
Fukushima Mayor Hiroshi Kohata called for understanding in a Twitter post saying, “Contemporary art is abstract expression unlike science.”
Yanobe said he wants to discuss with the city about what to do with the statue.

 

Fukushima residents complain over statue of child in radiation suit

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Critics say artwork outside train station gives impression area is unfit for habitation
Sun Child is depicted in a yellow Hazmat-style suit. The mayor of Fukushima defended the decision to install the statue.
Mon 13 Aug 2018
Residents of Fukushima have demanded the removal of a statue of a child in a protective suit from outside the city’s railway station, saying it gives the impression that the area is unfit for human habitation as a result of the 2011 nuclear disaster.
The statue, by Kenji Yanobe, depicts a child dressed in a yellow Hazmat-style suit, with a helmet in one hand and an artistic representation of the sun in the other.
Yanobe said his Sun Child, which was installed by the municipal government after appearing at art exhibitions in Japan and overseas, was intended to express his desire for a nuclear-free world.
The artist said he did not mean to give the impression that local children needed to protect themselves from radiation more than seven years after the Fukushima Daiichi plant became the scene of the world’s worst nuclear disaster since Chernobyl.
He pointed out that the child was not wearing the helmet and that a monitor on its chest showed radiation levels at “000”.
“I wanted to make a work that encourages people [in Fukushima] … and made the statue of a child standing up bravely and strongly against any difficulties it faces,” Yanobe said, according to Kyodo News.
But he added: “I should have paid more attention to the fact that accurate knowledge about radiation is needed much more now than before the disaster.”
His statue drew criticism on social media and in messages to the city government after it went on display this month. “It will cause damage to Fukushima’s reputation because it gives the impression that people cannot live there without protective gear,” one poster said, according to Kyodo.
Others pointed out that the monitor reading of zero was misleading, since areas that have not been affected by nuclear leaks have varying levels of background radiation.
The mayor of Fukushima, Hiroshi Kohata, defended the decision to install the statue, saying he believed the child looked hopeful about the city’s future, and the sun symbol was a reference to the need to develop clean energy sources.
However, he acknowledged public criticism of the statue and said he would take into account the opinions of residents before making a decision on its future.
Japan’s government hopes the 2020 Tokyo Olympics will help highlight Fukushima’s recovery from the disaster, despite the slow pace of the costly and complicated task of decommissioning Fukushima Daiichi, and concerns about radiation levels in nearby communities.
The city will host Olympic baseball and softball games and was recently chosen as the starting point for the Olympic torch relay.
The row over the statue comes as local authorities are trying to persuade families to return to evacuated neighbourhoods. Few residents have returned to cities, towns and villages where evacuation orders have been lifted, with families with young children most concerned about moving back.
In Naraha, about 12 miles south of the plant, only several hundred people among the pre-disaster population of 7,400 have returned since the town was declared safe in September 2015.

August 17, 2018 Posted by | Fukushima 2018 | , , | Leave a comment

New reactor being built in western Japan applies for safety checks

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This file photo taken on May 21, 2018, shows Shimane Nuclear Power Plant’s No. 3 reactor in Matsue, Shimane Prefecture, western Japan. (Kyodo)
August 10, 2018
TOKYO (Kyodo) — Chugoku Electric Power Co. on Friday applied to the government for safety screening of a nuclear reactor it is constructing, opening up the possibility of it becoming Japan’s first newly built reactor to go into operation since the 2011 Fukushima crisis.
Work on the No. 3 unit at the Shimane plant in Matsue, Shimane Prefecture, is almost complete and safety checks by nuclear regulators may proceed faster than for another reactor in northeastern Japan that is also under construction.
The No. 3 reactor will have a maximum output of 1,373 megawatts, making it one of the largest in the country. It is a boiling water reactor, the same type as those at Tokyo Electric Power Company Holdings Inc.’s disaster-hit Fukushima Daiichi nuclear power plant.
Chugoku Electric was initially aiming to activate the reactor in December 2011 after starting construction in 2006. But the plan was postponed following the Fukushima nuclear crisis, triggered by a massive quake and tsunami disaster that hit northeastern Japan.
The crisis led to the introduction of more stringent safety standards for nuclear power plants. Around 10 reactors have resumed operation in Japan after clearing the safety hurdles, but there has been no case in which new reactors have been activated after the disaster.
“With existing nuclear reactors currently restarting, we thought it is possible to file for checks of the No. 3 unit (even though it is a new reactor),” Tatsuo Kitano, managing executive officer of the utility based in Hiroshima Prefecture, told reporters.
The latest development came a day after Shimane Gov. Zembee Mizoguchi officially gave the green light for Chugoku Electric’s application for government screening.
But prospects remain unclear on when the reactor will be put into service as the utility will not just have to clear the safety tests but also again seek local consent for operation.
Chugoku Electric is spending around 500 billion yen ($4.5 billion) on safety measures for the No. 3 reactor, aiming to finish the work by September 2019.
The other new reactor that is seeking to start operation is being built at Electricity Power Development Co.’s Oma nuclear power plant in Aomori Prefecture.
The company known as J-Power applied for government safety checks in 2014, but the process has been drawn out. The Oma reactor is expected to become the world’s first commercial reactor to run fully on plutonium-uranium mixed oxide fuel.

August 17, 2018 Posted by | Japan | , | Leave a comment

An Emergency Statement on the Oppression at the hands of the Local Police against the Fukushima Nuclear Evacuees’ Aug.6 Hiroshima Action

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August 10, 2018
Hiroshima Police Unlawfully Arrested A Citizen to Silence Evacuees Appealing aboutOngoing Fukushima Disaster. A Serious Threats to Human Right and Free Speech.
Please share the following news and the our first statement of protest.
We demand that the Hiroshima police immediately release the arrested friend of the nuclear evacuees who participated in Aug.6 Hiroshima actions!
We, an organization of evacuees from the Fukushima nuclear disaster and their supporters, attended various peace rallies and events held in Hiroshima on August 6th 2018, commemorating the 73rd anniversary of 1945 nuclear atomic bomb dropped on Hiroshima, killing hundreds of thousands of innocent civilians. Survivors of Hiroshima atomic bombing and Fukushima nuclear evacuees are both victims of nuclear disaster and radiation. Our goal was to unite with Hiroshima and act together to end this ongoing disasters in the world.
There on the night of 6th, in front of the great number of people coming for these peace events from all over the world, we gave speeches in both Japanese and English. Our speech was for remembrance of those killed by the nuclear atomic bombing and the endless damage caused by the Fukushima nuclear disaster occurred in 2011.
A lot of Japanese and foreign tourists who visited Hiroshima for this anniversary stopped and listened to our speeches earnestly, taking our handouts explaining what the Fukushima nuclear disaster has caused : the real health damage of residents now spreading all over the eastern Japan; and the predicaments that evacuees are faced with even today. We were deeply moved by the amount of attentions and feedback we received from them. When one of the 2nd generation of atomic bomb victims gave a speech on how Hiroshima and Fukushima are connected with one straight line, radiation exposure, there was a round of applause from people including locals of Hiroshima. It became a great place of solidarity for sharing experiences and thoughts among those who were there with us.
However all things were changed when a suspicious passerby wearing military fashion, pointing his camera, started shouting complaints at us, and took photos of us, apparently aiming to disturb our speeches. We ignored him but when we were finishing it up and packing our stuff, he screamed saying, ‘Someone just broke my camera’ and called the local police even though we did not go near him or made any physical contact with him or whatsoever.
The local police officers rushed to us and blocked us from going anywhere. The officers started to question us and we explained many times that we did nothing to him, it was totally a false accusation and we needed to go back because some of us got very sick from the summer heat. However, the police officers refused to let none of us go.
The officers were talking something with their supervisor by wireless telephone all the time. Then suddenly they said “The police have had an eyewitness who saw your member break that man’s camera. So now take this person to the police station.” We told them that none of us did such a thing, however the officers put handcuffs on one of our members, saying “You are under suspicion of escape!! You are under arrest!! Let you know the reason of arrest when you are brought to the police station.” The police officers lifted that person’s body violently and then threw into their police car and took our member to the main police station in Hiroshima. This is clearly illegal abduction and confinement by the police using a false accusation.
The police officers physically held us down, trying us not to approach to the suspicious camera man or ‘eyewitness’. Witnessing a whole situation, some citizens there shouted to the police officers “how dare you doing such a thing on the memorial day for war dead!” and “How come? They have done nothing wrong!” The officers withdrew to the police station right after they made the arrest as if they themselves are fugitives.
The reason for this arrest was, we suspect, that the upper-level of police department judged our speeches and handouts politically and they ordered those police officers at the site to arrest our member.
This fact shows how the current Japanese administration is terrified of their biggest skeleton in the closet, the actual health damage due to the Fukushima nuclear disaster, coming to light. They are also making desperate efforts to hamper the voices of Fukushima nuclear victims and the concerns and resentment against atomic bombings from spreading among people in Japan and around the world. So they use whatever means to stop those real pictures being known to the public, domestically and internationally.
It was late at night, we have not been able to send lawyers with our member still confined at the police station of Hiroshima. It will be notified by Aug 9th whether our member will be released or continue detained for ten more days. We need your help and cooperation for us to make every effort to realize an earlier release.
A participants in the peace memorial events in Hiroshima, who gives a speech against radiation exposure gets arrested by a completely false accusation. Such an unlawful illegal arrest shall not happen.
In order to protect freedom of speech and human rights, please give us your attention to the protest against the police request for detention.
Please share this information with anyone you know.
Any donation would help rescue our member.
Contact us:
E-mail: gowest.comewest@gmail.com

August 17, 2018 Posted by | Fukushima 2018 | , , | Leave a comment

California’s Wildfires and Nuclear Radiation – – A Personal Story

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August 7, 2018
When I purchased a commonly available radiation detector right after the Fukushima disaster in 2011 I never would have dreamed how it would impact the way I saw the world. Since then I would periodically test the level of radioactivity around my home here in the Sierra Nevada mountains of California. Nothing was ever out of the ordinary, and my own readings were generally in the 30 to 50 counts per minute (cpm) range. Perfectly safe, or so I thought.
That all changed this Spring, when by chance I happened to remember that testing on an air filter could show the presence of “hot” particles. Since I happened to own two air cleaners with HEPA air filters, I got out my detector and laid it down on one of the HEPA filters. Immediately the detector went into a wild frenzy of clicking punctuated by the flashing of the red light each time it was bombarded by ionizing radiation. Thinking something had to be wrong, I tried again only to have the same result. I tried again on the other air cleaner and found an even higher result of over 800 cpm.
Since I had at that time been working with Akio for about a year, and had been introduced to several of his nuclear experts by email, I reached out to them asking what could possibly be causing this disturbing result. All agreed this was a high result, and the prime suspect was radon gas. Radon gas is common in this area, and can be threat to health. I promptly obtained test kits for my indoor air and well water, sent them in, and within a week I had the results – – all completely negative. At this point, concerned for the health of my family, I began testing everything I could think of to try to determine the source. Floor tiles, countertops and a few other things registered higher than the ambient level, but I was assured that this wouldn’t contribute more than about 30 cpm to the total.
After about a week or so, I remembered reading that many years after the Chernobyl disaster, people living there who heated their homes with wood, like we do, released radiation into the atmosphere once again in the burning process. We have two woodstoves in our home, one large one in the living room and a smaller one in the master bedroom. Since the fine particulate material of the ash might contaminate my detector, I laid down some sheets of paper towels on the ash below the stove in the bedroom, and switched the detector on. Immediately it registered far higher than ambient levels and beyond. Same in the living room. Same at a neighbor’s house. The source apparently was the fire wood – – mostly cut on my own land. Most of my neighbors heat with wood too, at least as a backup. Wood smoke, as I was well-aware, is composed of extremely small particulates that are easily breathed into the body and absorbed.
The implications of this discovery were disturbing. There were radioactive particles in the air that we were all breathing, apparently in large quantities. These particles had apparently been bio-accumulating in the woods around my home for many years, and were re-suspended when burned.
I immediately began monitoring my indoor air regularly, and took a reading on the HEPA filters whenever I could, generally hourly when I was home. Since the level of radiation was much lower without wood smoke indoors, I decided to put one air cleaner outdoors and leave the other indoors. I got out a fresh legal tablet and started a protocol where I would take a reading on each filter, take a picture of the result on my radiation detector with my smartphone, and write down the results. This quickly showed that there was not a much difference between the readings indoors or outdoors.
What I did not know at this point was if this was a localized problem, or whether it was more widespread. With fire season approaching, I abandoned taking two readings, and focused on carefully taking readings outdoors, recording them, and taking a picture of the sky when smoke or clouds were present. Knowing that a fire event was likely going to happen in the upcoming months, I wanted to be ready to see if smoke from wildfires outdoors would result in similar levels of radioactive particles as I had found indoors.
I never could have suspected that the wildfires in California would be as epic as they have been this year. We live in an area vulnerable to fires, and we take them seriously. We had been evacuated in 2014 as a fire approached to within a half mile of our home driven by strong winds, and were only saved by a massive air attack from a virtual fleet of air tankers lined up dropping water and fire retardant. This left a deep impression on us. My stepson has since become a fireman, and has just returned from a deployment to several fires, and after nursing an injury and getting clearance from his doctor, will be back on the fire lines.
As horrific as this season’s fires have been so far, with all the destruction of homes and loss of lives, what disturbs me most is what I have just recorded in my logs, photos and readings. At the peak of the fires and smoke just a few days ago, the readings were significantly higher – – and not by just a little. I recorded a peak reading of 1,333 cpm on the morning of July 31st, and had multiple readings above 1,000 cpm during that period. And, none of the fires is even close to us this time. The likely source of much of the smoke here is a fire near Yosemite National Park, over a hundred miles away. I suspect heavier concentrations of smoke would yield higher results.
Has the vast bulk of the 40 million population of California just been unknowingly exposed to high concentrations of radioactive particles? What are the constituents of these particles? How hazardous are they? It was recently widely reported that radiation from Fukushima, in the form of Cesium-137, was detected in small quantities in California wines. There can be little doubt that Cesium-137 from Fukushima has also been absorbed by all the vegetation here, and when burned, is re-released.
This situation cries out for serious study. I have no experience or academic training in this field. There may well be alternative explanations. I can see from what I have recorded that there are nuances and variances over the course of the day that probably reflect complex processes. All I know is that what we have been breathing shows indications of being contaminated with radioactive particles. It is strongly implied that this radioactivity has been silently concentrating in the plants around us, and is presumably in the food we eat, and in what we drink as well.
If that is correct, this is a situation far worse than we have ever been told. It is likely a global problem, as the exotic and unnatural particles that never existed on this planet previously until the dawning of the nuclear age have now found their way into the air, the oceans, and every living thing. With California on fire, my hope is for all of us to burn away our own complacency, and reignite our own passion to serve life itself in each moment. We can all do something to help according to our abilities, as Akio has selflessly done for many years using his gifts in bringing together international leaders for important common goals. Time is short, and the problem is measured in lifetimes. And potentially for some of us, shortened lifetimes at that.
 
Gregg Lien is an environmental and land use attorney practicing at Lake Tahoe in California. He is a former prosecutor, and was a former assistant county counsel specializing in land use issues before moving to Lake Tahoe in 1980. He was a participant in the first Presidential Summit on the Environment, hosted by then President Clinton and Vice-President Al Gore, and has been interviewed over the years in various media, including National Public Radio. He has been a frequent participant in regulatory negotiations and battles over resources in the Sierras. He lives with his wife, Heidi, and whichever of their children needs a place to stay now that the youngest has turned 18. He is fascinated by electronics and has a collection of meters and gadgets for his amateur radio and musical hobbies, some of which are actually useful in practical application – – or so he claims.

August 17, 2018 Posted by | Fukushima 2018 | , , | 1 Comment

Extreme makeover: Fukushima nuclear plant tries image overhaul

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Officials have been gradually trying to rebrand the Fukushima nuclear plant, bringing in school groups, diplomats and other visitors
 
August 3, 2018
Call it an extreme makeover: In Japan’s Fukushima, officials are attempting what might seem impossible, an image overhaul at the site of the worst nuclear meltdown in decades.
At the Fukushima Daiichi nuclear plant, there’s a flashy new administrative building, debris has been moved and covered, and officials tout the “light” radioactive security measures now possible.
“You see people moving around on foot, just in their uniforms. Before that was banned,” an official from the plant’s operator TEPCO says.
“These cherry blossoms bloom in the spring,” he adds, gesturing to nearby foliage.
If it sounds like a hard sell, that might be because the task of rehabilitating the plant’s reputation is justifiably Herculean.
In 2011, a massive earthquake triggered a devastating tsunami that killed thousands and prompted the meltdown of several reactors.
It was the worst nuclear disaster since Chernobyl, and has had devastating psychological and financial effects on the region.
But TEPCO officials have been gradually trying to rebrand the plant, bringing in school groups, diplomats and other visitors, and touting a plan to attract 20,000 people a year by 2020, when Tokyo hosts the Summer Olympics.
 
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Upbeat messaging from Fukushima’s operator TEPCO belies the enormity of the challenge to decommission the plant
 
Officials point out that protective gear is no longer needed in most of the plant, except for a small area, where some 3,000 to 4,000 workers are still decontaminating the facility.
Since May, visitors have been able to move around near the reactors on foot, rather than only in vehicles, and they can wear “very light equipment,” insists TEPCO spokesman Kenji Abe.
That ensemble includes trousers, long sleeves, a disposable face mask, glasses, gloves, special shoes and two pairs of socks, with the top pair pulled up over the trouser hem to seal the legs underneath.
And of course there’s a geiger counter.
The charm offensive extends beyond the plant, with TEPCO in July resuming television and billboard adverts for the first time since 2011, featuring a rabbit mascot with electrical bolt whiskers called “Tepcon”.
But the upbeat messaging belies the enormity of the task TEPCO faces to decommission the plant.
It has installed an “icewall” that extends deep into the ground around the plant in a bid to prevent groundwater seeping in and becoming decontaminated, or radioactive water from inside flowing out to the sea.
 
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About 100,000 litres of water still seeps into the plant each day, which requires extensive treatment to reduce its radioactivity
 
But about 100,000 litres (26,400 gallons) of water still seeps into the plant each day, some of which is used for cooling. It requires extensive treatment to reduce its radioactivity.
Once treated, the water is stored in tanks, which have multiplied around the plant as officials wrangle over what to do with the contaminated liquid.
There are already nearly 900 tanks containing a million cubic metres of water—equal to about 400 Olympic swimming pools.
And the last stage of decommissioning involves the unprecedented task of extracting molten nuclear fuel from the reactors.
“There was the Chernobyl accident, but they didn’t remove the debris,” said Katsuyoshi Oyama, who holds the title of TEPCO’s “risk communicator”.
“So for what we have to do here, there is no reference.”

August 6, 2018 Posted by | Fukushima 2018 | , , , | Leave a comment

NRA OKs plan to bury radioactive waste from nuke plant decommissioning for 100,000 yrs

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The Fukushima No. 1 Nuclear Power Plant is seen in this file photo taken from a Mainichi Shimbun helicopter on July 17, 2018.
The Nuclear Regulation Authority (NRA) plans to require that highly radioactive waste generated when nuclear reactors are decommissioned be buried underground at least 70 meters deep for about 100,000 years until the waste becomes no longer hazardous.
Moreover, disposal sites for such waste should not be built in areas that could be affected by active faults or volcanoes.
The plan is part of the proposed regulatory standards on disposal sites for radioactive waste from dismantled nuclear reactors, which the NRA approved on Aug. 1. The NRA will hear opinions from power companies operating nuclear plants and other entities before finalizing the regulatory standards.
Low-level radioactive waste generated when reactors are dismantled is graded by three ranks in descending order from L1 to L3.
The proposed regulatory standards cover L1 waste, such as containers for control rods and fuel assemblies.
There have been no regulatory standards for L1 radioactive waste even though a growing number of nuclear reactors are bound to be decommissioned under the regulatory standards for nuclear plants that have been stiffened following the outbreak of the Fukushima nuclear crisis in March 2011.
Under the proposed regulatory standards for L1 waste, electric power companies would be required to build disposal sites on stable ground. Such facilities should not be built near faults at least 5 kilometers in length. Moreover, utilities would be mandated to confirm from records or geological surveys that there has been no volcanic activity over the past 2.6 million years or so near where they plan to build the disposal sites.
Power companies would also be obligated to avoid building disposal sites near oil or mineral deposits because areas with such natural resources may be excavated in the future.
Such radioactive waste must be regularly monitored over a roughly 300- to 400-year period following its disposal to see if the waste contaminates nearby groundwater. The owners of disposal sites would then be banned from digging areas surrounding the facilities without permission from the central government.
The proposed standards also require that additional radiation exposure dosages from disposal sites be limited to 0.3 millisieverts or less a year in accordance with international standards. It is also required to confirm whether radiation doses would be below that limit even if the functions for shielding radiation were partially lost, such as the container holding radioactive waste being broken, by analyzing doses under such scenarios.

August 6, 2018 Posted by | Fukushima 2018 | , , | Leave a comment

Safety from Japanese Radiation Contaminated Food Import Should or Should Not Be a Political Issue?

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‘Don’t politicize Japanese food import issue’: official

2018/07/31
Taipei, July 31 (CNA) A Taiwan official on Tuesday urged all sides not to politicize food safety after Japan’s top envoy to Taiwan last week raised concerns over an opposition party-initiated referendum to prevent the government lifting an import ban on food from radiation-affected areas of Japan.
 
The opposition Kuomintang (KMT) held an event on July 24 to promote a referendum bid it initiated to prevent the government lifting a ban on the import of food products from five radiation-affected prefectures in Japan — Gunma, Fukushima, Ibaraki, Tochigi and Chiba — following the Fukushima Daiichi nuclear plant disaster in 2011.
 
Following the KMT event, Japan’s top envoy to Taiwan Mikio Numata (沼田幹夫) issued an open letter to the public, calling the KMT’s move “deeply disappointing,” while urging Taiwan to lift the ban that he said was imposed “without any scientific basis.” Failure to do so could harm the friendly relationship between Japan and Taiwan, he added.
 
Asked to comment, Taiwan-Japan Relations Association (TJRA) Secretary-General Chang Shu-ling (張淑玲), said as a democratic country governed by the rule of law, the government has no right to stop people exercising their civil right to initiate a referendum.
 
She reiterated that the government will do everything possible to safeguard public health, adding that the Ministry of Health and Welfare, which is in charge of food safety, will make the final decision on whether to lift the ban.
 
Chang called on all sides to remain clam and rational as food safety is a highly specialized issue and should not be politicized in ways that adversely impact Taiwan’s trade and economic relations with other countries.
 
The foreign ministry-funded TJRA handles Taiwan-Japan relations in the absence of official diplomatic ties.
 
Since returning to power in May 2016, the Democratic Progressive Party (DPP) administration has said it is considering lifting the ban but has run into heavy opposition. No progress has been made on the issue since then.
 
 

Food safety issue should not be politicized: official

Aug 01, 2018
Food safety should not be politicized, a top diplomat said yesterday, after Japan’s representative to Taiwan last week raised concerns over a proposed referendum to prevent the government from lifting an import ban on food from Japanese prefectures linked to a 2011 nuclear power plant disaster.
The Chinese Nationalist Party (KMT) on Tuesday last week held an event to promote the referendum bid it initiated to prevent the government from lifting a ban on the import of food products from Japan’s Fukushima, Gunma, Ibaraki, Tochigi and Chiba prefectures that was imposed following the Fukushima Dai-ichi nuclear power plant disaster in March 2011.
Japanese Representative to Taiwan Mikio Numata later issued an open letter calling the KMT’s move “deeply disappointing” and urging Taiwan to lift the ban, which he said was imposed “without any scientific basis.”
Failure to do so could harm the friendly relationship between Japan and Taiwan, he added.
Asked to comment on Numata’s remarks, Taiwan-Japan Relations Association Secretary-General Chang Shu-ling (張淑玲) said that as Taiwan is a democratic nation governed by the rule of law, the government has no right to stop people from exercising their civil right to initiate a referendum.
However, the government would do everything possible to safeguard public health, she said, adding that the Ministry of Health and Welfare, which is in charge of food safety, would make a final decision on whether to lift the ban.
Chang called on all sides to remain calm and rational, as food safety is a highly specialized issue and should not be politicized in ways that adversely affect Taiwan’s trade and economic relations with other nations.
The association, which is funded by the Ministry of Foreign Affairs, handles Taiwan-Japan relations in the absence of official diplomatic ties.
Since returning to power in May 2016, the Democratic Progressive Party administration has said it is considering lifting the ban, but the effort has been met with heavy opposition.

August 6, 2018 Posted by | Fukushima 2018 | , , | Leave a comment

16.33uSv/h on Route 114, Fukushima

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16.33uSv/h on Route 114, Fukushima, which is over 70 times as high as the decontamination level. The very highway where the gov. lifted a ban on vehicular traffic.
 

August 1, 2018 Posted by | Fukushima 2018 | , , | Leave a comment

TEPCO to open museum to display decommissioning process for Fukushima reactors

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A rendering of a stage, which projects the life-size cross-section of a nuclear reactor, enabling visitors to see inside of the reactor that suffered a meltdown, using computer graphics and actual footage.
 
July 31, 2018
TOMIOKA, Fukushima — Tokyo Electric Power Co. (TEPCO) announced on July 27 that it will open a museum here to display exhibitions in relation to the Fukushima No. 1 Nuclear Power Plant disaster and its decommissioning work.
The exhibition, which is scheduled to start in November 2018, will mostly display films in which actors re-enact scenes in the form of dramas, to inform visitors of how the Fukushima nuclear disaster that began on March 11, 2011, was handled and follow-up work, in sections titled, “Memories and records” and “Reflections and lessons.” On a different floor, drama footage introducing measures taken to lower the risk of decommissioning work and descriptions of the enormous worksite will be screened in sections titled, “Conditions at the scene” and “Progress of the work.”
There will also be a stage in which a life-size cross-section of a nuclear reactor is projected, using both computer graphics and actual footage. Visitors can also experience a simulation of the situation at the time of the meltdowns and see images of the actual debris.
Makoto Okura, head of TEPCO’s Fukushima Revitalization Headquarters, stated at a press conference, “I want the museum to serve as a venue for people hesitant to come back to local areas to understand what kind of accident it was, and what it’s like in reality.”
The venue for the museum will be a refurbished former Energy Kan building in the Fukushima Prefecture town of Tomioka, which was shut down after the disaster. The exhibition space is approximately 1,900 square meters spread over two stories. Entry to the museum will be free.

August 1, 2018 Posted by | Fukushima 2018 | , , , | Leave a comment

Fukushima Unit 2 Refueling Floor Work Poses Risks

Work has begun on the unit 2 refueling floor at Fukushima Daiichi. Previously, TEPCO installed a controlled building on the side of unit 2. This building provides filtered ventilation and a staging area. It will allow workers to send equipment into the reactor building refueling floor. The wall between the two buildings was opened earlier this spring.
After the initial disaster it that unit 2 was creating the most significant radiation releases to the environment.  The highest of the three units that melted down. In 2012 an obvious steam leak from the reactor well was discovered via TEPCO images.
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TEPCO eventually put a filtration system on the building. This prevented radiation releases to the environment. The future plans for this unit include removing the entire refueling floor level. The roof and walls down to the refueling floor deck are to be removed. Then a new cover building with replacement systems will be installed. Workers are still unable to enter the refueling floor area. High radiation levels prevent human entry. Only robots have entered. TEPCO has not addressed this radiation risk during the demolition and construction phase. Earlier reporting mentioned the planned use of dust suppressants during the demolition work. There is no management plan for potential radiation releases from the reactor well.
TEPCO’s schedule shows they may begin removing equipment from inside unit 2’s refueling floor as early as mid-July. The building demolition and spent fuel removal schedule is still somewhat vague. This is dependent on other work completion.

August 1, 2018 Posted by | Fukushima 2018 | , , , | Leave a comment

Gov’t, TEPCO consider starting removal of debris from 2nd reactor at Fukushima nuke plant

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The inside of the containment vessel of the No. 2 reactor at the Fukushima No. 1 nuclear plant is seen in this frame grab from video provided by the International Research Institute for Nuclear Decommissioning (IRID).
TOKYO — The government and Tokyo Electric Power Co. (TEPCO) are considering starting the removal of molten nuclear fuel from the No. 2 reactor of the Fukushima No. 1 Nuclear Power Plant, people familiar with the matter have told the Mainichi Shimbun.
Three of the four reactors at the plant in the northern Japanese prefecture of Fukushima suffered core meltdowns after the reactors’ cooling systems shut down due to tsunami triggered by the Great East Japan Earthquake of March 2011.
According to the sources, an on-site inspection of molten fuel debris inside the reactor’s containment vessel using remote control equipment will be conducted this fiscal year. Data from the test, such as the hardness of the debris and whether it is movable, will be used to develop equipment to remove and store the highly radioactive materials.
Under the road map for decommissioning the power plant revised in September last year, the government and TEPCO are to decide on a reactor on which to start debris removal and determine how to carry out the procedure by March 2020, the end of next fiscal year. Actual removal is scheduled to begin in 2021.
In January of this year, the government and TEPCO managed to insert a pipe with a camera into the No. 2 reactor’s containment vessel and captured the image of gravel- or clay-like deposits believed to be fuel debris on the floor.
According to the people familiar with the matter, the government and TEPCO have judged that it is necessary to further examine the conditions of the No. 2 reactor as a possible starting point for fuel debris removal, since inspections needed for such an operation have progressed further on the No. 2 unit more than on the other two reactors that suffered core meltdowns in 2011.
The government and TEPCO will carry out the new probe in the fall or later of this year by inserting a camera-equipped pipe attached with a device capable of directly touching the debris, which will gather data on the reactor’s current conditions. The debris is not taken out of the containment vessel at any point of this survey. In the next fiscal year starting April 2019, they will consider examining wider areas inside the containment vessel and recovering a small sample of molten fuel for analysis ahead of full-fledged extraction in 2021.
As for the other reactors, the No. 3 unit has water inside the containment vessel, the removal of which is difficult, although images of what appeared to be fuel debris were captured inside the reactor in July 2017. The No. 1 reactor, meanwhile, will receive another probe to determine the existence of molten fuel inside because an inspection carried out in March last year failed to spot any debris.
TEPCO will shortly submit a plan for the examination of the No. 1 and No. 2 reactors’ interior for fiscal 2019 and later to the Nuclear Regulation Authority.
(Japanese original by Toshiyuki Suzuki and Ei Okada, Science & Environment News Department)

August 1, 2018 Posted by | Fukushima 2018 | , , | Leave a comment

TEPCO’s Plan For Some Of The More Dangerous Work At Daiichi

Soon after the disaster workers at the plant discovered that their dosimeters would high radiation alarm then be unable to give a reading when they approached the unit 1-2 shared vent tower. This was an indication that radiation levels near the tower were so high that their dosimeters were unable to accurately read the level. One of the most dangerous places at Fukushima Daiichi may undergo work to reduce the ongoing risk.

One of the two units connected to this vent tower ejected considerable amounts of radioactive materials via the tower during the initial disaster. The area has been declared off limits with shielding walls installed. Closer inspection with cameras and drones showed that the tower had suffered structural damage and was at risk of collapse or further damage. Since then TEPCO and the research agencies tasked with disaster clean up at the site have been working on a plan to dismantle the tower.

The current plan includes a complex series of machines and equipment designed specifically for this task. The work would remove the upper portions of the vent tower then install a cap on the top of the remaining pipe. This is assumed to be used to prevent further release of radioactive materials or inflow of rainwater into the highly radioactive area. The actual demolition work is scheduled for fall of 2018 and could take a year to complete.

The graphic below shows the steps towards cutting down the tower in sections.

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August 1, 2018 Posted by | Fukushima 2018 | , , | Leave a comment