Muons suggest location of fuel in unit 3 — World Nuclear News

” Some of the fuel in the damaged unit 3 of the Fukushima Daiichi plant has melted and dropped into the primary containment vessel, initial results from using a muon detection system indicate. Part of the fuel, however, is believed to remain in the reactor pressure vessel.

Muons are high-energy subatomic particles that are created when cosmic rays enter Earth’s upper atmosphere. These particles naturally and harmlessly strike the Earth’s surface at a rate of some 10,000 muons per square meter per minute. Muon tracking devices detect and track these particles as they pass through objects. Subtle changes in the trajectory of the muons as they penetrate materials and change in direction correlate with material density. Nuclear materials such as uranium and plutonium are very dense and are therefore relatively easy to identify. The muon detection system uses the so-called permeation method to measure the muon data.

Tokyo Electric Power Company (Tepco) installed a muon detection system on the first floor of unit 3’s turbine building. Measurements were taken between May and September this year.

Tepco said analysis of muon examinations of the fuel debris shows that most of the fuel has melted and dropped from its original position within the core.

Prior to the 2011 accident, some 160 tonnes of fuel rods and about 15 tonnes of control rods were located within the reactor core of unit 3. The upper and lower parts of the reactor vessel contains about 35 tonnes and 80 tonnes of structures, respectively.

The muon examination indicates that most of the debris – some 160 tonnes – had fallen to the bottom of the reactor pressure vessel and resolidified, with only about 30 tonnes remaining in the reactor core. Tepco said another 90 tonnes of debris remains in the upper part of the vessel.

The bulk of the fuel and structures in the core area dropped to the bottom of the reactor pressure vessel (RPV), Tepco believes. While part of the molten fuel is understood to have then fallen into the primary containment vessel (PCV), “there is a possibility that some fuel debris remains in the bottom of the RPV, though this is uncertain”, the company noted.

Similar muon measurements have already been conducted at units 1 and 2 at Fukushima Daiichi. Measurements taken at unit 1 between February and September 2015 indicated most of the fuel was no longer in the reactor’s core area. Measurements taken between March and July 2016 at unit 2 showed high-density materials, considered to be fuel debris, in the lower area of the RPV. Tepco said that more fuel debris may have fallen into the PCV in unit 3 than in unit 2.

Tepco said the results obtained from the muon measurements together with knowledge obtained from internal investigations of the primary containment vessels using remote-controlled robots will help it plan the future removal of fuel debris from the damaged units. ”

by World Nuclear News

source with illustration of Unit 1-3


Radioactive hot particles still afloat throughout Japan six years after Fukushima meltdowns — BuzzFlash

” Radioactive particles of uranium, thorium, radium, cesium, strontium, polonium, tellurium and americium are still afloat throughout Northern Japan more than six years after a tsunami slammed into the Fukushima Daiichi Power Plant causing three full-blown nuclear meltdowns. That was the conclusion reached by two of the world’s leading radiation experts after conducting an extensive five-year monitoring project.

Arnie Gundersen and Marco Kaltofen authored the peer reviewed study titled, Radioactively-hot particles detected in dusts and soils from Northern Japan by combination of gamma spectrometry, autoradiography, and SEM/EDS analysis and implications in radiation risk assessment, published July 27, 2017, in Science of the Total Environment (STOLEN).

Gundersen represents Fairewinds Associates and is a nuclear engineer, former power plant operator and industry executive, turned whistleblower, and was CNN’s play-by-play on-air expert during the 2011 meltdowns. Kaltofen, of the Worcester Polytechnic Institute (WPI), is a licensed civil engineer and is renowned as a leading experts on radioactive contamination in the environment.

415 samples of “dust and surface soil” were “analyzed sequentially by gamma spectrometry, autoradiography, and scanning electron microscopy with energy dispersive X-ray analysis” between 2011 and 2016. 180 of the samples came from Japan while another 235 were taken from the United States and Canada. The study further clarifies, “Of these 180 Japanese particulate matter samples, 57 were automobile or home air filters, 59 were surface dust samples, 29 were street dusts (accumulated surface soils and dusts) and 33 were vacuum cleaner bag or other dust samples.”

108 of the Japanese samples were taken in 2016, while the other 72 were gathered in 2011 after the meltdowns. Gundersen and Kaltofen tapped 15 volunteer scientists to help collect the dust and soil — mostly from Fukushima Prefecture and Minamisoma City. “A majority of these samples were collected from locations in decontaminated zones cleared for habitation by the National Government of Japan,” the study revealed. For the 108 samples taken in 2016, an “International Medcom Inspector Alert surface contamination monitor (radiation survey meter) was used to identify samples from within low lying areas and on contaminated outdoor surfaces.”

Fairewinds Associates’ video from 2012 features Gundersen collecting five samples of surface soil from random places throughout Tokyo — places including a sidewalk crack, a rooftop garden, and a previously decontaminated children’s playground. The samples were bagged, declared through Customs, and brought back to the U.S. for testing. All five samples were so radioactive that according to Gundersen, they “qualified as radioactive waste here in the United States and would have to be sent to Texas to be disposed of.” Those five examples were not included as part of the recently released study, but Gundersen went back to Tokyo for samples in 2016. Those samples were included, and were radioactive, and according to Gundersen were “similar to what I found in Tokyo in [2012].”

Furthermore, 142 of the 180 samples (about 80 percent) contained cesium 134 and cesium 137. Cesium 134 and 137, two of the most widespread byproducts of the nuclear fission process from uranium-fueled reactors, are released in large quantities in nuclear accidents. Cesium emits intense beta radiation as it decays away to other isotopes, and is very dangerous if ingested or inhaled. On a mildly positive note, the study shows that only four of the 235 dust samples tested in the United States and Canada had detectable levels of cesium from Fukushima.

Cesium, due to its molecular structure, mimics potassium once inside the body, and is often transported to the heart where it can become lodged, thereafter mutating and burning heart tissue which can lead to cardiovascular disease. Other isotopes imitate nutritive substances once inside the body as well. Strontium 90 for example mimics calcium, and is absorbed by bones and teeth.

“Different parts of the human body (nerves, bones, stomach, lung) are impacted differently,” Kaltofen told EnviroNews in an email. “Different cells have radio-sensitivities that vary over many orders of magnitude. The body reacts differently to the same dose received over a short time or a long time; the same as acute or chronic doses in chemical toxicity.”

In contrast to external X-rays, gamma, beta or alpha rays, hot particles are small mobile pieces of radioactive elements that can be breathed in, drunk or eaten in food. The fragments can then become lodged in bodily tissue where they will emanate high-intensity ionizing radiation for months or years, damaging and twisting cells, potentially causing myriad diseases and cancer. The study points out, “Contaminated environmental dusts can accumulate in indoor spaces, potentially causing radiation exposures to humans via inhalation, dermal contact, and ingestion.”

The study also explains, “Given the wide variability in hot particle sizes, activities, and occurrence; some individuals may experience a hot particle dose that is higher or lower than the dose calculated by using averaged environmental data.” For example, a person living in a contaminated area might use a leaf blower or sweep a floor containing a hefty amount of hot particle-laden dust and receive a large does in a short time, whereas other people in the same area, exposed to the same background radiation and environmental averages, may not take as heavy a hit as the housekeeper that sweeps floors for a living. People exposed to more dust on the job, or who simply have bad luck and haphazardly breathe in hot radioactive dust, are at an increased risk for cancer and disease. High winds can also randomly pick up radioactive surface soil, rendering it airborne and endangering any unsuspecting subject unlucky enough to breath it in.

Hot particles, or “internal particle emitters” as they are sometimes called, also carry unique epidemiological risks as compared to a chest X-ray by contrast. The dangers from radiation are calculated by the dose a subject receives, but the manner in which that dose is received can also play a critical factor in the amount of damage to a person’s health.

“Comparing external radiation to hot particles inside the body is an inappropriate analogy,” Gundersen toldEnviroNewsin an email. “Hot particles deliver a lot of energy to a very localized group of cells that surround them and can therefore cause significant localized cell damage. External radiation is diffuse. For example, the weight from a stiletto high heal shoe is the same as the weight while wearing loafers, but the high heal is damaging because its force is localized.”

Kaltofen elaborated with an analogy of his own in a followup email with EnviroNews saying:

Dose is the amount of energy in joules absorbed by tissue. Imagine Fred with a one joule gamma dose to the whole body from living in a dentist’s office over a lifetime, versus Rhonda with exactly the same dose as alpha absorbed by the lung from a hot particle. Standard health physics theory says that Fred will almost certainly be fine, but Rhonda has about a 10 percent chance of dying from lung cancer — even though the doses are the same.

External radiation and internal hot particles both follow exactly the same health physics rules, even though they cause different kinds of biological damage. Our data simply shows that you can’t understand radiation risk without measuring both.

Some isotopes, like plutonium, only pose danger to an organism inside the body. As an alpha emitter, plutonium’s rays are blocked by the skin and not strong enough to penetrate deep into bodily tissue. However, when inhaled or ingested, plutonium’s ionizing alpha rays twist and shred cells, making it one of the most carcinogenic and mutagenic substances on the planet.

“Measuring radioactive dust exposures can be like sitting by a fireplace,” Dr. Kaltofen explained in a press release. “Near the fire you get a little warm, but once in a while the fire throws off a spark that can actually burn you.”

“We weren’t trying to see just somebody’s theoretical average result,” Kaltofen continued in the press release. “We looked at how people actually encounter radioactive dust in their real lives. [By] combining microanalytical methods with traditional health physics models… we found that some people were breathing or ingesting enough radioactive dust to have a real increase in their risk of suffering a future health problem. This was especially true of children and younger people, who inhale or ingest proportionately more dust than adults.”

“Individuals in the contaminated zone, and potentially well outside of the mapped contaminated zone, may receive a dose that is higher than the mean dose calculated from average environmental data, due to inhalation or ingestion of radioactively-hot dust and soil particles,” the study says in summation. “Accurate radiation risk assessments therefore require data for hot particle exposure as well as for exposure to more uniform environmental radioactivity levels.” ”

source with video by Arnie Gundersen

Scrapping of Monju would mean disposal of 760 tons of radioactive sodium, MOX fuel — The Japan Times

” About 760 tons of radioactive sodium remain in the piping and other equipment of the trouble-prone Monju prototype fast-breeder nuclear reactor, which may be ordered decommissioned, it was learned Sunday.

It has not been decided how to dispose of the radioactive sodium, said sources at the Japan Atomic Energy Agency, the operator of Monju. If the government decides to scrap the reactor, sodium disposal is expected to be a difficult challenge.

Sodium is used as a coolant at Monju, while water is used at conventional nuclear reactors. Sodium is a tricky chemical element that burns intensely if it comes into contact with air or water.

According to the agency, the Monju reactor has some 1,670 tons of sodium. Radioactive substances are contained in 760 tons of the total as it circulates inside the reactor vessel.

The Monju reactor needs to be drained of the sodium if it is to be demolished.

Radioactive and chemically active sodium has to be sealed in containers. There is no precedent of radioactive sodium disposal in Japan.

“We plan to consider the method of disposal if a decision is made to decommission (Monju),” an official said.

Monju, located in Tsuruga, Fukui Prefecture, is a core facility in Japan’s nuclear fuel cycle policy because, if running properly, the reactor produces more plutonium than it consumes.

More than ¥1 trillion, mostly from state budgets, has been invested in Monju. But the 280,000-kw reactor has operated for only 250 days since it reached criticality, or a self-sustained nuclear fission chain reaction, for the first time in April 1994, due to a raft of problems, including maintenance flaws, a sodium leak and fire and attempted coverup.

In November 2015, the Nuclear Regulation Authority advised the government to replace the operator of Monju. The government is carrying out a thorough review of the Monju project, including the possibility of decommissioning the reactor.

The disposal of the mixed-oxide, or MOX, fuel used at Monju is another significant issue. The amount of MOX fuel, a blend of uranium and plutonium recycled from spent nuclear fuel, that needs to be disposed of is estimated at 21 tons, but Japan is not equipped to carry out its disposal.

One option is to consign the disposal to a foreign country and receive the return of uranium and plutonium after the processing, along with radioactive waste.

But the agency’s cost estimate of ¥300 billion for decommissioning Monju does not include the expense of the overseas entrustment of MOX fuel disposal.

The agency aims to entrust France with the disposal of some 64 tons of MOX fuel that has been used at its Fugen advanced converter reactor, but no contract has been concluded. The Fugen reactor, also in Tsuruga, is slated to be decommissioned.

Spent MOX fuel contains larger amounts of highly toxic radioactive substances than spent uranium from conventional reactors.

The disposal of radioactive sodium and MOX fuel at Monju is emerging as an additional and difficult challenge for the government at a time when the final disposal site has not been decided for high-level radioactive waste from nuclear plants across Japan. ”



**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

Problems with prototype reactor threaten Japan’s nuclear fuel recycling plan — The Japan Times

” Japan’s energy policy is facing major obstacles this year, as problems surrounding an experimental reactor threaten to foil long-laid plans to recycle nuclear fuel.

The government is trying to develop a commercial fast-breeder nuclear reactor to recycle nuclear fuel and raise the energy self-sufficiency rate, currently at about 6 percent, of the world’s fifth-largest energy consuming country.

Resource-poor Japan imports all of its uranium for nuclear power generation — one of its core power sources — from Canada and other countries, but it seeks to make fuel on its own using an advanced fast-breeder reactor capable of producing more plutonium than it consumes.

Plutonium can be used as nuclear fuel for conventional and fast-breeder reactors by mixing it with uranium. Japan currently uses overseas companies to reprocess its spent fuel into uranium-plutonium mixed-oxide (MOX) fuel, with a view to homegrown reprocessing in the future.

The fast-breeder reactor development project recently hit a major stumbling block, however, that put the entire project at risk of shutting down.

The regulator instructed the government in November to consider steps to guarantee the safety of the trouble-prone Monju reactor, including an option to close it down if a new operator cannot be found within six months.

The government has spent more than ¥1 trillion ($8.27 billion) on Monju, a prototype fast-breeder nuclear reactor that remains under development.

But ongoing safety problems have left the reactor idled for much of the time since it first achieved criticality in 1994.

The Nuclear Regulation Authority has criticized the current operator, the government-backed Japan Atomic Energy Agency, for having made little progress in enhancing safety management even after a slew of safety problems led to a protracted halt in operations.

Hiroshi Hase, the science minister in charge of the project, set up a panel to discuss a possible successor to operate the reactor.

But the regulator’s warning sparked concerns over the fate of the project, as many industry observers think it would be tough to find a replacement.

Establishing yet another government body is no longer a solution after the government’s repeated attempts to create new entities to run Monju failed to realize safe operation, an NRA official said.

The JAEA, established in 2005 by the government through a merger of two former national nuclear research institutions, is already the Monju plant’s third operator.

It would be too risky to let a private company take charge of the prototype reactor, which generates electricity in a more complex way than light-water reactors that many utilities run at present, experts said.

“A (private) power company doesn’t have the technical expertise” to run a fast-breeder nuclear reactor, Makoto Yagi, chairman of the Federation of Electric Power Companies of Japan (FEPC), told reporters when asked about replacements for the JAEA.

The Japan Institute for National Fundamentals, a pro-nuclear activist group, criticized the NRA’s decision as a move that could lead to the closure of Monju and a drastic overhaul of the country’s nuclear energy policy.

The government should “correct the Nuclear Regulation Authority’s excessive” behavior, the institute said in a newspaper advertisement in December, arguing that the NRA has no jurisdiction over the nation’s energy policy.

Shunichi Tanaka, the head of the NRA, has repeatedly said his body wants the science minister, who is in charge of the Monju project, to ensure the experimental reactor’s safety and has no intention to push the ministry to discontinue it.

“It is up to the ministry to decide” whether to close it, Tanaka said at a news conference.

Hideyuki Ban, co-director of the Citizens’ Nuclear Information Center, an independent anti-nuclear advocacy group, said no power companies and government bodies have the ability to carry out the project safely.

“I think (closing it) is really what the government should do,” he said.

Monju has a long track record of problems, starting with a major fire caused by a sodium leak in 1995 that resulted in the project being suspended until May 2010.

It was halted again in August of the same year after a fuel replacement device for the reactor was accidentally dropped, leaving it inoperable until now.

Shutting down the reactor due to safety issues would be tantamount to Japan giving up on development of a commercial fast-breeder reactor, Ban said.

However, terminating the project could create a new headache: the stockpiling of plutonium with no fast-breeder reactor running on MOX fuel to use it. Such a decision would reinforce international fears that the nuclear fuel could be put to military use.

Chinese envoy Fu Cong said in a speech to the U.N. General Assembly’s First Committee in October that Japan’s fissile materials inventory is already large enough to make more than 1,000 nuclear warheads.

The FEPC had planned to use such MOX fuel at 15 conventional reactors by the end of March 2016. That plan, however, has been stalled since the Fukushima meltdowns of 2011 left most reactors in Japan suspended for safety reviews under newly tightened regulations.

If abandoning the fast-breeder reactor project derails Japan’s plan to launch its own reprocessing of spent fuel, concerns are likely to grow over what to do with spent fuel.

“If the Monju project falls through, there is no doubt that calls for reviewing the energy policy will grow louder,” Ban said. ”


Less than one lifetime: Eyewitness to nuclear development, from Hunters Point to Chernobyl and Fukushima, issues a warning — San Francisco Bay View

I highly recommend reading this article that elaborates on the dangers of nuclear energy, the health effects of radiation exposure from isotopes strontium-90, cesium-134 and cesium-137, and the historical corruption of the global nuclear industry. The author, Jannette D. Sherman, M.D., is a physician, toxicologist and author, concentrating on chemicals and nuclear radiation that cause cancer and birth defects, and is consulting editor for “Chernobyl: Consequences of the Catastrophe for People and Nature,” a comprehensive presentation of all the available information concerning the health and environmental effects of the low dose radioactive contaminants. Dr. Sherman has worked in radiation and biologic research at the University of California nuclear facility and at the U.S. Naval Radiological Defense Laboratory at the Hunters Point Shipyard in San Francisco.

read article with an interview with Dr. Sherman at the bottom of the page