The Fukushima nuclear meltdown continues unabated — Helen Caldicott, Independent Australia

Helen Caldicott sums up the situation here:

” Recent reporting of a huge radiation measurement at Unit 2 in the Fukushima Daichi reactor complex does not signify that there is a peak in radiation in the reactor building.

All that it indicates is that, for the first time, the Japanese have been able to measure the intense radiation given off by the molten fuel, as each previous attempt has led to failure because the radiation is so intense the robotic parts were functionally destroyed.

The radiation measurement was 530 sieverts, or 53,000 rems (Roentgen Equivalent for Man). The dose at which half an exposed population would die is 250 to 500 rems, so this is a massive measurement. It is quite likely had the robot been able to penetrate deeper into the inner cavern containing the molten corium, the measurement would have been much greater.

These facts illustrate why it will be almost impossible to “decommission” units 1, 2 and 3 as no human could ever be exposed to such extreme radiation. This fact means that Fukushima Daichi will remain a diabolical blot upon Japan and the world for the rest of time, sitting as it does on active earthquake zones.

What the photos taken by the robot did reveal was that some of the structural supports of Unit 2 have been damaged. It is also true that all four buildings were structurally damaged by the original earthquake some five years ago and by the subsequent hydrogen explosions so, should there be an earthquake greater than seven on the Richter scale, it is very possible that one or more of these structures could collapse, leading to a massive release of radiation as the building fell on the molten core beneath. But units 1, 2 and 3 also contain cooling pools with very radioactive fuel rods — numbering 392 in Unit 1, 615 in Unit 2, and 566 in Unit 3; if an earthquake were to breach a pool, the gamma rays would be so intense that the site would have to be permanently evacuated. The fuel from Unit 4 and its cooling pool has been removed.

But there is more to fear.

The reactor complex was built adjacent to a mountain range and millions of gallons of water emanate from the mountains daily beneath the reactor complex, causing some of the earth below the reactor buildings to partially liquefy. As the water flows beneath the damaged reactors, it immerses the three molten cores and becomes extremely radioactive as it continues its journey into the adjacent Pacific Ocean.

Every day since the accident began, 300 to 400 tons of water has poured into the Pacific where numerous isotopes – including cesium 137, 134, strontium 90, tritium, plutonium, americium and up to 100 more – enter the ocean and bio-concentrate by orders of magnitude at each step of the food chain — algae, crustaceans, little fish, big fish then us.

Fish swim thousands of miles and tuna, salmon and other species found on the American west coast now contain some of these radioactive elements, which are tasteless, odourless and invisible. Entering the human body by ingestion they concentrate in various organs, irradiating adjacent cells for many years. The cancer cycle is initiated by a single mutation in a single regulatory gene in a single cell and the incubation time for cancer is any time from 2 to 90 years. And no cancer defines its origin.

We could be catching radioactive fish in Australia or the fish that are imported could contain radioactive isotopes, but unless they are consistently tested we will never know.

As well as the mountain water reaching the Pacific Ocean, since the accident, TEPCO has daily pumped over 300 tons of sea water into the damaged reactors to keep them cool. It becomes intensely radioactive and is pumped out again and stored in over 1,200 huge storage tanks scattered over the Daichi site. These tanks could not withstand a large earthquake and could rupture releasing their contents into the ocean.

But even if that does not happen, TEPCO is rapidly running out of storage space and is trying to convince the local fishermen that it would be okay to empty the tanks into the sea. The Bremsstrahlung radiation like x-rays given off by these tanks is quite high – measuring 10 milirems – presenting a danger to the workers. There are over 4,000 workers on site each day, many recruited by the Yakuza (the Japanese Mafia) and include men who are homeless, drug addicts and those who are mentally unstable.

There’s another problem. Because the molten cores are continuously generating hydrogen, which is explosive, TEPCO has been pumping nitrogen into the reactors to dilute the hydrogen dangers.

Vast areas of Japan are now contaminated, including some areas of Tokyo, which are so radioactive that roadside soil measuring 7,000 becquerels (bc) per kilo would qualify to be buried in a radioactive waste facility in the U.S..

As previously explained, these radioactive elements concentrate in the food chain. The Fukushima Prefecture has always been a food bowl for Japan and, although much of the rice, vegetables and fruit now grown here is radioactive, there is a big push to sell this food both in the Japanese market and overseas. Taiwan has banned the sale of Japanese food, but Australia and the U.S. have not.

Prime Minister Abe recently passed a law that any reporter who told the truth about the situation could be [jail]ed for ten years. In addition, doctors who tell their patients their disease could be radiation related will not be paid, so there is an immense cover-up in Japan as well as the global media.

The Prefectural Oversite Committee for Fukushima Health is only looking at thyroid cancer among the population and by June 2016, 172 people who were under the age of 18 at the time of the accident have developed, or have suspected, thyroid cancer; the normal incidence in this population is 1 to 2 per million.

However, other cancers and leukemia that are caused by radiation are not being routinely documented, nor are congenital malformations, which were, and are, still rife among the exposed Chernobyl population.

Bottom line, these reactors will never be cleaned up nor decommissioned because such a task is not humanly possible. Hence, they will continue to pour water into the Pacific for the rest of time and threaten Japan and the northern hemisphere with massive releases of radiation should there be another large earthquake. ”

by Helen Caldicott

source

7 million Bq of all β nuclides leaked as contaminated water in Fukushima plant — Fukushima Diary

” According to Tepco, highly contaminated water leaked from a water storage tank on 6/26/2016.

All β nuclides density is reportedly 96,000,000 Bq/m3. Cs-134/137 density is also 700,000 Bq/m3.

Tepco states the leaked volume was 72 L. Based on their announcement, at least 6,912,000 Bq of all β nuclides leaked to contain Sr-90.

Tepco says no contaminated water spread to the outside of the tank area.

The type of this tank has unwelded joint parts, which is vulnerable for leakage.

The life of these tanks was reported to be 5 years but in 2013 Tepco admitted it has no basis.

These tanks are not bearable for the contaminated water but these are still in use. ”

by Iori Mochizuki

source with French translation and TEPCO press release links

**Internal exposure concealed: The True state of the Fukushima nuclear power plant accident — Yagasaki Katsuma, The Asia-Pacific Journal

Yagasaki Katsuma’s article (below) is by far the most complete, well-researched and truthful account of radiation exposure to the Japanese as a result of the Fukushima meltdowns that I have read thus far. I highly recommend that you read this entire article. – MP

” Yagasaki Katsuma, emeritus professor of Ryukyu University, has been constantly sounding the alarm about the problem of internal exposure related to nuclear weapons testing and nuclear electricity generation. Since the explosion at the Fukushima Daiichi nuclear power plant (NPP), he has drawn on his expertise to conduct field research, and to support those who evacuated to Okinawa. We asked him to reflect on the five years since the accident at Fukushima Daiichi, and to lay out the issues that lie ahead.

Heading to the blast site 12 days post-explosion

On March 17, 2011, a friend who lived in Fukushima City contacted me. “They’re reporting an onslaught of radioactivity, but we have no idea about any of that”, he said. “We need dosimeters, but there’s no way to get our hands on them.”

I ended up making my way to Fukushima along with several dosimeters for measuring radioactivity. I set up the dosimeters. Fukushima was under a petrol provision restriction, and I could not travel freely. I needed to make arrangements for an “emergency vehicle” to use. I had left Okinawa on March 24, traveled via Osaka by plane to Fukushima Airport, and entered Fukushima City by a bus that went through Kōriyama. The Japan Railways (JR) trains had stopped running. It had been 12 days since the first explosion, which had occurred at reactor No. 1 of the Fukushima Daiichi Nuclear Power Plant (NPP). It snowed the next morning, and I saw that a torrent of radioactivity – 12 microsieverts/hour – was relentlessly falling on the living spaces of Fukushima’s citizens.

From March 25 to 31, I went to eight areas to measure radiation doses in the air, farmland and water: Fukushima City, Iwaki City, Aizu-Wakamatsu City, Kitakata City, Minami-Sōma City, Kōriyama City, Iitate Village, and Kita-Shiobara Village. I engaged in discussions with farmers and other locals about what steps they should take.

At the time, the dose readings from farmland went down by half when just the top layer of weeds and straw litter were removed; digging 3 cm deep reduced the readings by 80%. So I suggested that if people did not plant crops this year, and removed 5 cm of topsoil from their land, they could prevent future batches of crops from radioactive contamination. It was a situation in which both national and local governments were at a loss about what to do; they could not even come up with countermeasures, and were practically without policies. In the end, apart from a few enterprising farmers who followed my recommendations, most farm-owners felt compelled to plant crops, and ended up ploughing the soil to spread radiation up to 20 cm deep.

Of the 2 dosimeters I had brought with me to conduct my survey, I lent one to a farmers’ union for one year, thus doing what I could for them in terms of temporary assistance.

No Measures to Protect Residents

One of the things which stunned me was the absoluteness of the safety myth (anzen shinwa). Even though radioactive dust was falling, no one knew anything about how to protect their bodies. The local governments had not a single dosimeter among them. The evacuation manual for NPP accidents used in Fukushima City’s elementary schools was exactly the same as the evacuation manual for earthquakes.

Furthermore, all attempts to talk about demonstrations of the danger of NPPs were categorically suppressed. Herein lies the root of why no countermeasures were taken to protect residents from radioactivity. No stable iodine tablets were distributed; no SPEEDI (System for Prediction of Environmental Emergency Dose Information) data was announced, and so on.

Before the accident, I had published a book called Concealed Radiation Exposure in 2009 with Shin Nihon Shuppansha, which expounded my view that internal exposure was a hidden kind of exposure more dangerous than external exposure.

The Atomic Bomb Casualty Commission (ABCC) and the Radiation Effects Research Foundation (RERF) have suppressed information about those sacrificed in the atomic bombings. The International Commission for Radiation Protection (ICRP) has concealed the issue of internal exposure in the context of their commitment to the cause of the United States’ nuclear strategy.1 The Fukushima Daiichi NPP accident, through multiple explosions, has scattered between one hundred and several thousand more radioactive materials than the Hiroshima bomb into the environment, resulting in health damage caused by internal exposure. This would ineluctably lead the International Atomic Energy Agency (IAEA) and the ICRP to cover up internal exposure and exposure casualties. In other words, I believed that they would do everything they could to cast off health damage to Fukushima residents, and support the Japanese government’s policies to abandon its own citizens. This is what drove me to rush down to Fukushima.

The Accident on Televised Programmes

For two years in 2011 and 2012, I delivered more than 120 lectures each year, and held interviews with the mass media. The mass media did courageously report on the reality and danger of internal exposure, but a distressing incident occurred in the process. This happened during my appearance, on July 2, 2011, as a guest on NHK Television’s Weekly News Insights.

The NHK flipchart that disappeared was based on this graph. 2

I had asked them to make a flipboard for me which showed data on how the rate of child cancer deaths in Japan had jumped five years after the atomic bombings of 1945 to three times their original rate (see graph). It was data which clearly demonstrated that these children were the world’s first casualties of internal exposure. The night before the show, I was handed a script and sat in a meeting discussing the show until past 10 PM. However, the next morning, when I headed to NHK, the director told me that due to time constraints, we could not follow the script we had discussed the previous night. On entering the studio, the flipboard which I had expected to be at my feet was nowhere to be seen. When I asked a nearby staff member to please bring it for me, quickly, the reply was that they could not do that. With 30 seconds to go before showtime, I had no choice but to appear on the show bereft of my data.

The following day, when I requested a written explanation of these events, NHK did not oblige me. Faced against my will with such a situation, I feel strongly that I am responsible for not being able to properly deal with it.

The Society for Connecting Lives

My deceased wife, Okimoto Yaemi, established a society called “Connecting Lives – The Society to Connect Okinawa with Disaster Sites” together with Itō Michiko, an evacuee from Fukushima, and others. They demanded that the Tokyo Electric Power Company explain compensation claims to the victims of the disaster, and even made them come to Okinawa to explain this in person to the evacuees here. It was the first time TEPCO had traveled outside of Fukushima Prefecture to hold an information session. In Okinawa, a group of plaintiffs for a lawsuit to “return our livelihoods, return our region” also came together. 3

In the midst of all her work, Okimoto always came to send me off and to pick me up from Naha Airport. Now that she is gone, I have taken up her role as the representative for the “Connecting Lives” society.

After the accident, the melted-down reactor core was too radioactive to be properly disposed of. It is clear as day from this fact alone that nuclear power generation should not be permitted. In these 5 years, there has been a regime brimming with pollution: it is manifest in things like the lack of intelligence and care on the part of the Japanese government, the utilitarianism that places profits and power above human rights, and the political concealment of the worst environmental radiation disaster in history.

******

It is now 5 years since the Fukushima Daiichi accident, and we are in an abnormal state of affairs in which TEPCO and the national government are forcing people to silently accept their victimization.

Under the Atomic Energy Basic Law, the maximum annual exposure limit for the public is set at 1 millisievert. But people are being forced to accept a revised threshold that is 20 times larger, that of 20 millisieverts per year.

In Fukushima Prefecture, the cessation of compensation payments and the lifting of the evacuation order in highly contaminated regions has forced people to return, at the same time that housing support for the evacuees is also being ended. Of course, there are no measures at all in place to deal with radioactivity outside Fukushima Prefecture.

The Chernobyl NPP accident of 1986 led Ukraine (also Belarus and Russia) to establish laws that protected human rights, which stands in great contrast with the human rights situation surrounding the Fukushima Daiichi NPP accident.4

Claiming Radiation Effects as Psychological

The media reports on the occasion of 3.11’s 5th anniversary contain references to the “fūhyō higai” (damage caused by rumors of radiation) that they claim is hampering the reconstruction process. Why do they not call this as it is, “radioactivity damage”? “Fūhyō higai”is a term that they use in order to replace radiation effects as psychological problems.

Under appointment of the IAEA, Shigematsu Itsuzō (now deceased), the former chairman of RERF (formerly ABCC), carried out a health survey of Chernobyl residents. He remarked in a report he made in 1990 that “there are virtually no diseases that are caused by radiation, but attention must be paid to the psychological stress that is caused by wondering whether or not one has been exposed to radiation”. The theory that “psychological stress causes illness” is a method used to conceal the radiation victimization of the nuclear age.

In Chernobyl, uncontaminated food was distributed to residents of contaminated areas. Respite trips for children are also ensured by the state. And yet, in Fukushima, there is a huge push to “support by consumption” (tabete ouen) and the administration has implemented a policy of “locally-grown and locally-consumed” in providing children’s school lunches. Japan is not attempting to avoid internal exposure as Chernobyl-affected states did; it is doing the exact opposite.

What is at the bottom of this response? Whether it is protecting residents from radiation exposure, or decommissioning of the melted reactor core, or indeed dealing with the contamination of underground water, there are numerous things that need to be addressed even by diverting the budgets of the forthcoming Tokyo Olympics. However, the Japanese government is trying to overcome all these issues with cheaper costs at the expense of people’s suffering. Underlying this is their utilitarianism – an ideology which prioritizes economics over human rights and human lives – as well as their philosophy of abandoning the people.

Following what the government is saying, one is left speechless. “If it’s under 100 becquerels, then sell it [produce]”; “If you don’t sell it you won’t be able to support yourself”; “If you talk about radioactivity you won’t be able to sell [your produce]”; “Don’t talk about radioactivity”. Media reports are controlled by the government, and people can only remain silent.

Providing safe food is the mission of agriculture. Surely there is no more cruel infraction of human rights than to force producers, against their will, to make food that might adversely affect human health by radioactive contamination. There is no solution to this injustice other than to get rid of this system that has been imposed by fiat. Although farmers’ labors have lowered the amount of radioactive contamination in their produce, tragedies will continue as long as they keep the allowable radioactivity in food up to 100 becquerels/kilogram.

Such standard stems from the thinking that economic profits comes before health. Radioactivity even in small amounts can cause harm. International Commission on Radiological Protection has it that carcinogenesis starts with DNA mutation of a single cell. Human susceptibility to radioactivity depends on individuals, and more vulnerable ones, particularly fetuses are affected first. The natural miscarriage rate of the four prefectures including Fukushima since 311 has risen by 13%.5

Consumption of one becquerel of C-137 (with biological half-life of approximately 80 days) every day will result in an internal accumulation of 140 becquerels within about 2 years. If we have to inevitably set any standard for allowable radioactivity in food, we should use the guidelines set forth in the recommendation by German Society for Radiation Protection, which is “no food with a concentration of more than 4 becquerel of the leading radionuclide Cesium-137 per kilogram shall be given to infants, children and adolescents. Grown-ups are recommended to eat no food over 8 becquerel per kilogram of the leading nuclide Cesium-137.”6

Deceitful Dosimetry

The Japanese government’s philosophy of abandoning its people starts with its refusal to trust them, in other words it views them as unintelligent citizens. Fearing that a panic would result, it did not announce SPEEDI data, nor did it distribute solid iodine tablets. It prioritized “emotional stability” over protecting residents from radiation danger. Moreover, it implemented thorough control of information.

It is not simply that residents are seen as ignorant. The government has even actively betrayed their trust. A classic example of such actions by the state is the presentation of data on the radioactive contamination levels in the environment. The government set up monitoring posts (MP) in Fukushima Prefecture and neighboring prefectures and made the readings from them into official data. Along with Yoshida Kunihiro and others from the “Safety and Reassurance Project”, in the autumn of 2011, I checked the dose measurements of the MP. We found clear evidence that the publicly available data of the MP only showed 54% of the actual level of contamination in our readings.

Comparison of Radiation Dose Readings from the Monitoring Posts and Actual Doses

X-axis: amount of radiation (microsieverts/hour

Y-axis: actual doses for residents and measurements at monitoring posts

Black dot-dash line: Actual absorbed dose received by residents

Dotted red line: Measurements at monitoring posts without decontamination

Red line: Measurements at monitoring posts with decontamination

[When laid alongside a graph of the actual recorded radiation doses taken by the authors at the monitoring posts (black line; the absorbed dose to residents), the same displayed readings taken from the same monitoring posts were 58% of that value in the case of non-decontaminated areas and 51% for decontaminated areas.]

[2011 autumn, taken with a certified scintillator counter, model HITACHI-ALOKA YCS172B]

On top of that, there was also a deliberate downplaying in government processing of the numerical data. The level of soil contamination is directly related to the amount of radiation in the air, and an objective measurement of this thus should be obtained from the air dose. However, on the assumption that there is a uniform exposure dose to the whole body, this reading was converted to 60% of its full amount based on the projected dose, an amount called the “effective dose”, a number that divides the exposure dose among the body’s various organs. Furthermore, they made a hypothetical estimate of the time people spent inside and outside their homes, and created a “substantive dose” reading that was another 60% lower. In the background to these machinations lies the will of the international nuclear energy industry.

The health survey being conducted by the Fukushima Prefecture Health Survey Evaluation Committee continues to progress, and the sad news is that it has already located 163 cases of cancer. From a scientific point of view, it is clear that these cases are undeniably caused by radioactivity. I also found, from the ratio of male to female patients, that about 75% of cancers in each sex were induced by radiation. Despite this, the Evaluation Committee continues to assert that there is no proof that these cancers are linked to the NPP accident.

Just as the committee insists that the numerous stark cases of thyroid cancer are not linked to radioactivity, so they will attempt to bury all other adverse health impacts in the sand.

******

Environmental pollution by radiation in Japan is ongoing, and, following the Fukushima Daiichi NPP accident, it is the worst it has ever been. This is true whether we look at the amount of radioactivity being released via the long-term meltdown of the reactor core, which is spewing uncontrollably, while the government and mass media collaborate in the cover-up. From the standpoints of society, economics and preventative medicine, a terrible state of affairs will result if we do not provide public protection to the people affected by the accidents and clarify the nature and extent of environmental damage.

“Cheaper” Countermeasures

The Japanese government has deemed the amount of radioactivity released from the Fukushima accident as one sixth of that which was released from Chernobyl. However, the subsequent revelations suggest that Fukushima’s radioactivity is actually anywhere from 2 to 4 times as high as Chernobyl’s.7 Compared to the explosion of just one reactor at Chernobyl, which had a 1,000,000 kilowatt capacity, the explosion at Fukushima Daiichi involved 4 reactors with a combined output of 2,810,000 kilowatts.

The post-accident maintenance of nuclear reactors between Fukushima and Chernobyl also differs. Seven months after Chernobyl, a steel and cement sarcophagus was built to cover the reactor, thus stopping the further release of radioactive materials. Japan, even after 5 years, continues to let radioactive substances spew out into the air and water, thus worsening the world’s environment.

Without using the necessary basic procedures, they are simply trying to implement “cheaper” countermeasures. The fact that the stricken reactor cannot be managed alone can demonstrate that nuclear power lacks practicality and there is no choice but to abolish it.

As mentioned before, Japan is not honestly disclosing the degree of contamination and is using various measures to underestimate it. They have not published dose readings for radioactive nuclides such as uranium, plutonium, and strontium-90. The monitoring posts, which are supposed to provide public data of radioactivity, give readings that are only around half of the actual doses.

Pediatric thyroid cancer cases in Fukushima have risen to 163. It has been proven scientifically that these are due to radiation. (Tsuda Toshihide et al. have demonstrated this via statistics8; Takamatsu Isamu has examined the relationship between exposure dose and cancer onset rate9; Matsuzaki Michiyuki10 and Yagasaki Katsuma11have studied the relationship of radiation with the sex-differentiated ratio of cancer).

In response to this research, the Fukushima Prefectural Health Evaluation Committee has continued to insist that there is no clear link between cancer and the NPP accident. They are trying to bury all the injuries to health by this denial of a link between radioactivity and the many recorded cases of thyroid cancer. By expunging the record of health damages caused by radiation, they hope to heighten the false impression that NPPs are “safe”. In Japan, excessive utilitarianism goes unmentioned; companies’ profits and the state’s convenience take priority over human life.

The Systemization of Dispersal

The countries surrounding Chernobyl created a “Chernobyl Law” to protect their residents 5 years after the accident. Under this law, the government designated areas that received more than 0.5 millisieverts of radiation each year as “dangerous”, and areas that received between 1 and 5 millisieverts of radiation each year as “areas with relocation rights”, while areas receiving more than 5 millisieverts each year could not be used as residential or agricultural sites. Health checkups and respite trips for children have been covered in a massive budgetary investment by the state in order to protect its residents.

What about Japan? The legal exposure limit for the public is 1 millisievert per year. As previously mentioned, the government has raised the upper threshold to 20 millisieverts per year in their drive to push Fukushima residents to return. The Chernobyl law forbids residence and agriculture in areas where more than 5 millisieverts (per year) of irradiation is expected; in Japan, approximately 1,000,000 people live in such areas.

Under the Basic Law on Atomic Energy, which governs nuclear reactors and related phenomena, the standard for radioactive waste management (the level considered for safe recycling use) is 100 becquerels per kilogram. Notwithstanding this rule, the special law for measures to handle contamination by radioactive substances permits up to 8000 becquerels per kilogram. Contamination dispersal is thus becoming systematized.

A law to support child victims was established, but no maps of radioactive contamination were made, and the areas specified to receive assistance under this law’s “Basic Policy” are limited to Fukushima Prefecture. With this law they have thus made all areas outside Fukushima Prefecture ineligible to receive radioactivity countermeasures.

When looking at the measurements taken by the Nuclear Regulation Authority of the contamination levels in all prefectures, we see that contamination exists everywhere in the country, Okinawa being no exception.

In particular, eastern Japan shows high levels of contamination. 10 prefectures show contamination of more than 1,000 becquerels of Iodine-131 per square meter of land –Tochigi, Ibaraki, Tokyo, Yamagata, Saitama, Chiba, Gunma, Kanagawa, Nagano, and Shizuoka (Readings for Fukushima and Miyagi were not available for a period of time because the measurement equipment were destroyed by the earthquake and tsunami, but other sources confirm high I-131 dispersion in Fukushima). 11 prefectures show more than 1,000 becquerels of Cesium-137, and Cesium-134 – Fukushima, Tochigi, Ibaraki, Tokyo, Yamagata, Saitama, Chiba, Gunma, Kanagawa, Iwate, and Nagano.

These readings are taken from a fixed point, which means that if a radioactive plume does not pass over these points, it will not be measured, and is liable to produce an under-estimation gap by 1 to 2 digits.

Although the Ministry of Education has implemented airborne monitoring, cities with a density of buildings higher than 3 stories present obstacles to this technology, making it unable to record their levels of contamination. Severe contamination is concealed in the Tokyo metropolitan area and other places in the region.

Legal Protection of Citizens

The above facts demonstrate an intentional ignoring of the serious level of radiation pollution. Japanese citizens should recognize radioactivity pollution as a de facto state of affairs.

In order to protect Japanese citizens from radioactivity pollution, the government and administration should take responsibility for protecting victims via a swift application of the regulations exactly as they are laid out under the Basic Law on Atomic Energy. Here we raise some suggestions for administrative policies to enact not only towards evacuees, but all residents. 1. The state should recognize and guarantee citizens’ right to evacuate and relocate. It should also bear responsibility in enacting measures to protect vulnerable victims, especially children.

  1. Health damages that emerge from NPP accidents should be studied on a nation-wide scale, and a study of the conditions of evacuees should be quickly implemented.
  2. Those most vulnerable to radiation should be protected by measures based on a sincere commitment to preventive medicine.
  3. With regard to the numerous early-onset cases of child thyroid cancer that have far exceed such early cases caused by Chernobyl, medical care and compensation should be provided; children and all residents should be protected. Thyroid screening should also be carried out for the entire country.
  4. Measures to prevent the entrance and exit of radioactive substances in all regions should be enacted.
  5. TEPCO’s social responsibility as a victimizer corporation in radioactivity pollution should be clarified.

This is a translation of a modified version of Yagasaki’s three-part article series “Kakusareru naibu hibaku – Fukushima genpatsu jiko no shinso” that appeared in Ryukyu Shimpo on March 16, 17, and 18, 2016. ”

by Yagasaki Katsuma

source with internal reference citations

Post-accident sporadic releases of airborne radionuclides from the Fukushima Daiichi nuclear power plant site — Environmental Science & Technology

” ABSTRACT: The Fukushima nuclear accident (March 11, 2011) caused the widespread contamination of Japan by direct deposition of airborne radionuclides. Analysis of weekly air filters has revealed sporadic releases of radionuclides long after the Fukushima Daiichi reactors were stabilized. One major discharge was observed in August 2013 in monitoring stations north of the Fukushima Daiichi nuclear power plant (FDNPP). During this event, an air monitoring station in this previously scarcely contaminated area suddenly reported 137Cs activity levels that were 30-fold above the background. Together with atmospheric dispersion and deposition simulation, radionuclide analysis in soil indicated that debris removal operations conducted on the FDNPP site on August 19, 2013 are likely to be responsible for this late release of radionuclides. One soil sample in the center of the simulated plume exhibited a high 90Sr contamination (78 ± 8 Bq kg−1 ) as well as a high 90Sr/137Cs ratio (0.04); both phenomena have usually been observed only in very close vicinity around the FDNPP. We estimate that through the resuspension of highly contaminated particles in the course of these earthmoving operations, gross 137Cs activity of ca. 2.8 × 1011 Bq has been released. ”

by Georg Steinhauser, Tamon Niisoe, Kouji H. Harada, Katsumi Shozugawa, Stephanie Schneider, Hans-Arno Synal, Clemens Walther, Marcus Christl, Kenji Nanba, Hirohiko Ishikawa, and Akio Koizumi

read full article

Researchers: No doubt cleanup at Fukushima nuclear plant contaminated rice crops in 2013 — The Asahi Shimbun

” MINAMI-SOMA, Fukushima Prefecture–Radioactive substances that contaminated rice paddies here in 2013 came from the crippled Fukushima No. 1 nuclear plant, an international group of researchers said, rejecting a denial issued by Japan’s nuclear safety authority.

The researchers, led by Akio Koizumi, a professor at Kyoto University’s Graduate School of Medicine, reached the conclusion after analyzing radioactive substances and taking spot readings of radioactivity levels around Minami-Soma.

Koizumi presented the final report of the group, consisting of 11 researchers from Japan, Europe and the United States, to local farmers and other parties at a community center in Minami-Soma on Jan. 17.

“The cause of further contamination was the radioactive particles dispersed from contaminated rubble during the cleanup effort at the Fukushima No. 1 nuclear plant,” Koizumi concluded in the report.

Earlier, the agriculture ministry and the Nuclear Regulatory Authority (NRA) gave different views on the source of the contaminated rice.

In 2013, rice crops from areas of Minami-Soma were found with unexpectedly high radioactivity levels more than two years after the triple meltdown at the nuclear plant located 20 kilometers south of the city.

One theory was that highly radioactive substances were dispersed when workers were lifting and removing contaminated rubble at the Fukushima plant on Aug. 19 that year. Two workers at the plant were exposed to high doses of radiation during the cleanup process.

The Ministry of Agriculture, Forestry and Fisheries said the cause of the contaminated rice was “unknown” although it acknowledged “the possibility of the dispersal of contaminated dust.” The farm ministry discontinued its investigation without specifying the source of the contamination.

The NRA, however, said the contaminated rice was not related to the cleanup work at the nuclear plant.

The Minami-Soma city assembly expressed outrage over the NRA’s stance. Some in the city suspected the NRA of a cover-up.

Koizumi and the other researchers digitally recreated an accidental dispersal of contaminated dust from the plant in August 2013.

They used a new analysis system to estimate the amount of radioactive cesium that spread toward Minami-Soma based on radioactivity readings around the city and other factors.

The group’s cesium estimate was more than 3.6 times the amount initially estimated by the NRA.

The research group in September 2014 also collected soil samples from 10 locations around the contaminated rice paddies to determine the amount of strontium 90 in the area.

They confirmed that the ratio of strontium 90 to radioactive cesium in the soil samples was similar to the ratio that would be found near the Fukushima nuclear plant.

Beta-ray emitting strontium 90 is less airborne and tends to remain within close proximity of nuclear weapon testing sites or nuclear accidents. Radioactive cesium is more volatile and can easily adhere to fine dust spread by the wind.

In general, the amount of strontium 90 decreases the farther it gets from a nuclear plant, compared with radioactive cesium. In fact, hardly any strontium 90 has been detected far away from the Fukushima plant.

Based on the amounts of radioactive particles recorded around Minami-Soma, the researchers concluded that a highly irregular plume of radioactive cesium reached Minami-Soma on the third week of August 2013.

“Every single piece of data in the paper supports the fact that contamination by radioactive dust came from the debris at the nuclear plant,” Koizumi said.

Asked about the NRA’s conclusion, Koizumi said: “It seems they were blinded by their estimated amount of dispersed particles, and their choice for the analysis system was misguided. This kind of attitude would only increase the anxiety of residents in the affected areas.”

The group’s findings were published in the international academic journal Environmental Science & Technology last month after a peer review. ”

by Masakazu Honda and Miki Aoki

source

Tepco completes sea wall to keep tainted Fukushima No. 1 water from reaching sea — The Japan Times

” Tokyo Electric Power Co. announced completion Monday of a 780-meter coastal wall along the heavily damaged reactor buildings of the Fukushima No. 1 nuclear power plant.

Tepco hopes the wall will significantly reduce the amount of contaminated water that has continued to flow into the Pacific more than four years after the 2011 meltdown crisis.

The gigantic wall, which the utility describes as impermeable, has an underground section that reaches as deep as 30 meters. It will reduce the amount of tainted water flowing into the sea from 400 tons to 10 tons a day, according to Tepco’s estimate.

Until Monday, about 400 tons of groundwater was draining along the sides of the buildings and into the sea each day, after being contaminated with fallout from the 2011 meltdown crisis, according to Tepco.

The utility says an estimated 150 tons of underground water is still flowing into the basements of the damaged reactor buildings each day.

The water, some of which has been circulated to cool melted nuclear fuel, is believed to be kept in place within the buildings by pressure exerted by higher underground water levels outside the buildings.

Last month, Tepco, after finally securing the consent of the local fishing industry, started draining underground water from around the plant buildings and dumping it into the sea after subjecting it to decontamination processes.

The launch of this draining operation put Tepco in a position to close the wall’s last 10-meter opening Monday.

The wall is now expected to reduce the amount of radioactive cesium and strontium entering the sea to one-fortieth of previous levels, and that of tritium to one-fifteenth of the previous levels, Tepco officials claimed.

Around 10 a.m., plant workers drove nine 30-meter steel pipes into the ground and injected mortar to fill the gaps between them, thereby closing the wall and mitigating the leakage of what Tepco calls “slightly tainted water” into the sea.

Recent tests of water samples from the nearby sea have detected radioactive substances such as cesium-137 and strontium-90, but scientists have said the density is so low that it poses no immediate danger to human health.

Yet, the ongoing flow of tainted water from the plant has raised anxiety and concerns among local fishermen and many consumers across the country.

Tepco plans to keep monitoring the density of radioactive materials in the nearby sea over the next month.

To isolate the four reactor buildings from the underground water, Tepco hopes to freeze the soil around them by the end of this year with coolant equipment already buried in the ground.

The Nuclear Regulation Authority has yet to give permission for the operation, saying creation of frozen soil could drastically change the underground water level around the plant.

If the water level outside falls lower than that inside, the contaminated water could leak out.

Meanwhile, Tepco has not explained exactly how it will control the water levels, an NRA official said. ”

source with video