2011/10/21

If wolves could understand the risks

The American public broadcaster PBS recently aired a documentary called Radioactive Wolves. The film (the link goes to a youtube video) examines the flourishing wildlife in the Chernobyl Exclusion Zone (CEZ), and raises fascinating questions about whether this land will ever recover from the worst industrial accident in history.

While pro and anti-nuclear activists have always had extremely different conclusions about the effects of long-lasting, low-level radiation, a comment by the director of Radioactive Wolves, Klaus Feichtenberger, offers a fundamental point that both sides should be able to agree on. An interviewer asked him:
"Q. We are expecting to see animals in trouble here, struggling with radiation poisoning and mutations. How is it that nothing seems to be wrong?

A. In the first few years after the accident, when high concentrations of various radionuclides dotted the land, there were, in fact, many casualties. In the wild, any sick animal will soon disappear. Twenty-five years down the road, much of the fall-out has been diluted by water or sand, washed away or blown away by the wind. The ambient radiation is not very high, although dirty spots with Plutonium in the ground remain and will remain for a long time. According to a very elaborate study by Belarusian scientists, 4 to 6 % of every new generation of small rodents suffers some sort damage from radiation. These individuals will usually not reproduce. If they do, they do not seem to pass on radiation-induced changes to the next generation. The overall population is not affected by a loss of 4 to 6 % per generation.
Q. Would we be more affected by radiation than the animals here? Why are people not allowed to return to the zone?
A. Simply because 4 to 6% of all babies being in some way handicapped would be a disaster for humans, even though a human population as a whole would continue to live."

So, while anti-nuclear activists could concede the point here that some animals appear to be thriving, by a revised definition of the word thriving, pro-nuclear activists have to admit that the finding means little to humans. The question is not whether a location is fit of habitation, or whether the local radiation is going to give me cancer, but whether it is fit for human procreation. The anti-nuclear side can admit that most adults can indeed tolerate fairly high levels of radiation, but the pro-nuclear side has to admit that fetuses and children can be severely damaged by very low levels of radiation. This is why the CEZ will remain uninhabited, and why people in Fukushima are justified in wanting compensation to leave the area. Despite government expenditures to prop up the economy of contaminated areas, these areas are probably doomed. The market will speak. No one will want to raise children in such areas, and it is impossible to imagine any revitalization plan that can succeed in the absence of young people.

In April, 2011, Wired Magazine covered the controversy over wildlife studies in the CEZ, discussing the conflicting research findings on whether wildlife really was recovering. The article was more supportive of the view that the bad effects have been exaggerated, but it mentioned one grim qualification that should give pause to the optimists who think this land is going to recover:

"While iodine-131 decayed long ago and the strontium and cesium are slowly becoming less potentially lethal, the hot particles of plutonium-241 scattered across the landscape are actually decaying into an even more toxic isotope, americium-241. A more powerful emitter of alpha radiation than plutonium, americium is also more soluble and can easily find its way into the food chain. Americium-241, in turn, decays into neptunium-237, another energetic alpha emitter that has a half-life of more than 2 million years. As of yet, the long-term effect of americium-241 on animals remains largely unknown."

2011/10/16

The Fukushima disaster leads to the discovery of pre-existing threats

Mitsubishi Quietly Cleans Up Its Former Refinery
from the New York Times, March 8, 2011
BUKIT MERAH, Malaysia — Hidden here in the jungles of north-central Malaysia, in a broad valley fringed with cave-pocked limestone cliffs topped with acacia and durian trees, lies the site of the largest radiation cleanup yet in the rare earth industry
Residents blamed a rare earth refinery for birth defects and eight leukemia cases within five years in a community of 11,000 — after many years with no leukemia cases. Seven of the leukemia victims have since died.
The Bukit Merah case is little known even elsewhere in Malaysia, and virtually unknown in the West, because Mitsubishi Chemical quietly agreed to fix the problem even without a legal order to do so.

It was highly ironic that this report appeared on March 8, 2011, just three days before Japan was hit with a massive earthquake, tsunami and nuclear disaster, and it provides a window into an aspect of nuclear issues that lies beyond the sensational news of the recent catastrophic accident. That is, it illustrates how the extent of radioactive pollution has steadily increased and is only now coming to public awareness.
Defenders of nuclear energy constantly remind critics that life evolved with radiation, that there have always been variable levels of background radiation during the existence of our species. The problem with understanding the effects of normal background radiation is that our knowledge of it developed concurrently with the radiation added to the environment by human activities. As soon as we were able to measure radiation and begin global surveys of “natural” background radiation, large-scale mining and fossil fuel burning had already been underway for over a century. These activities are not normally thought of as connected to radiation contamination, but it is a fact that radon gas has been safely stored underground during the time that life evolved. When the Industrial Revolution began, we began to rip open the earth, releasing this gas by digging holes in the ground and by burning fossil fuels. By the 20th century, when we had the technology to measure radiation, we were also busy mining and enriching uranium, and testing hundreds of nuclear weapons. So there is no starting baseline with which to distinguish “natural” radiation from man-made radiation. Furthermore, it is reasonable to suspect that what we call natural radiation is now rapidly increasing as the pace of global development accelerates and we become more desperate to squeeze out the last joules of energy from the world’s carbon and uranium reserves.
Radiation has also become a part of our lives due to its uses in medical therapy and industrial applications. When hospitals use radioisotopes for diagnosis and treatment of cancer, they do their best to handle the materials properly, but these materials stay in the world until they decay, and it’s not possible to keep all of them isolated from the environment. After some treatments, patients are radioactive and they are told to stay home and avoid contact with children and pregnant women, but there have been several cases of them setting off radiation detectors as they moved through tunnels and airports. Even if they stay home while they eliminate radioisotopes from their bodies, doing so means that these materials travel through sewers and back into the environment.
Industrial applications of radioactive materials are just as problematic. Smoke detectors and other instruments use small amounts of radioactive materials. The irradiation of food and sewage is now a routine practice. Considering the many gross failures of government regulatory systems in recent years, it would be naïve to think that all of this material is properly handled through its life cycle from production to disposal.
The accident at Fukushima has brought this issue into focus because this is the first time a large scale nuclear accident has occurred in the age of the internet and inexpensive consumer grade geiger counters. Thousands of people have bought their own dosimeters, and since the accident they have always been one step ahead of official sources in finding hotspots and confirming or refuting official statistics. What is just as alarming as the fission products from Fukushima are the discoveries of radiation sources that have been with us for a long time.
Over the summer, several blog and Youtube reports were posted by people who were on the lookout for Fukushima fallout in North America. 
One intrepid reporter travelled through Western Canada and wiped down his windshield after every thunder shower, finding high levels of radiation in the paper towels he used. He even managed to set up an elaborate Youtube channel with advertising revenue and requests for donations, and he managed to promote a particular brand of geiger counter in his reports to finance his trip across Canada. The problem was that he was reporting on a phenomenon called radon washout, which has been written about in scientific papers since long before the meltdowns in Fukushima. Radon gas in the atmosphere becomes concentrated by the electrical charge of lightning, then rains down in heavy amounts in certain areas. The radiation from radon decays away in a few hours, something which wouldn’t happen if the rain contained fission products from a meltdown. Any commenters on this Youtube channel who pointed out the flawed assumption were quickly dismissed as trolls hired by the nuclear industry to monitor internet discussion. This shows how scientific skepticism has been pushed aside in favor of polarized ideology and sensational reporting.
Other bloggers and video posters found similar findings from rainwater in Toronto and St. Louis over the summer of 2011. A construction crew in Niagara Falls, New York found high levels of radiation in the soil under a road they were tearing up. A man from California riding a train in Chiba, Japan, found that his seat was giving off 10 microsieverts per hour. This level was much higher than even the alarming hotspots that have been found in Chiba since the Fukushima meltdowns, so the only plausible explanation was that someone who had recently undergone radiation therapy was on the train. In a residential neighborhood of Tokyo, citizens with Geiger counters found a radiation level that was much above the hottest hotspots that had been found in the Tokyo area. It turned out that there were vials of luminescent radium paint inside a nearby house, and evidence suggested they had been there since the 1950s.
All these cases point to the possibility that we are living in a world that has steadily increasing amounts of man-made radioactivity. We are becoming aware of it now only because there has been a large nuclear accident that caused thousands of citizens to obtain technology that was never available to them before. One can easily imagine, for example, that the political fallout of nuclear testing in the 1950s and 1960s would have been much different if citizens had been able to do their own monitoring and post results to shared databases on the internet. After Chernobyl and until the end of the Soviet system, it was illegal to measure radiation, even for scientists who had access to equipment to do it. In Japan this year there have been grumblings from some politicians about amateurs taking their own readings and publicizing them, but they seem to have given up trying to stop it.
These radiation findings also bring to public awareness the question of what it means exactly when we talk about “natural” background radiation. Radon gas is in the ground, and since we have been ripping open the ground and burning its contents (oil, coal, gas) at an accelerating pace for 200 years, it is logical that science would want to ask how this has increased the amount of radon that living organisms are exposed to. This question is especially relevant when we think of the scale of uranium and rare metal mining, open pit mining, the Alberta Oil Sands, and the large amount of electricity still generated by burning coal. All of these activities release radon into the atmosphere. Research on these emissions concludes that they make up a small amount of all the exposure one gets from medical x-rays and cosmic radiation. However, it seems there has been no research done to compare natural levels of radiation in the 18th century with natural levels in the 21st century, probably because there is no way to establish the baseline level that existed before the Industrial Revolution. In the meantime, it is reasonable to wonder if there may be nothing natural about the levels of radiation that can be detected in rainfall after a summer thunderstorm. The world may seem romantically refreshed and electrified after a summer squall, but don’t be tempted to drink from the rain barrel in your backyard.

2011/10/08

“Tough” moral choices: Save the farmers or save the children?

A few years ago Harvard University launched an e-learning initiative in order to make the knowledge of Harvard accessible to a global audience. The most successful professor in this program has been philosophy professor Michael Sandel. His lectures, freely accessible over the Internet, have become enormously popular in Asia. He has appeared on television in Japan numerous times, and at a lecture series at Tokyo University there were scalpers selling tickets to get in.

In his lectures, Professor Sandel focuses on moral paradoxes, and he encourages students to comment and on dilemmas that cannot be solved according to rigid moral rules. For example, you are the driver of a runaway trolley car heading down a track toward a crew of five workers who are on the track. You can switch the trolley to another track where there is only one worker. In another scenario, you are on a bridge above the track watching helplessly as the train speeds toward the five workers. Beside you is a very large man leaning over the railing. You could push him over, making him land on the track and derail the trolley car. As in the first scenario, this would sacrifice one life to save five. In another scenario, a surgeon in an emergency room is faced with five patients who each have different organs failing. In the next room is a healthy patient who came in for a checkup. It occurs to the doctor that the healthy patient could be sacrificed. Five of his organs could be used to save five lives.

As Professor Sandel discusses these three scenarios, he lets students provide the answers and keeps his own views to himself. However, as he guides the discussion, it is obvious that he has led the audience to the realization that moral decisions have to be suited to the context rather than with strict adherence to rigid rules laid down before the unique circumstance was encountered. In the first scenario, most people say that the driver would be justified in choosing to kill one rather than five, but in the other two almost no one favors sacrificing one life to save five.

The curious thing about Professor Sandel’s work is that he is more famous in Asia than in America. Thomas Friedman of the New York Times noted in an article about Sandel “the hunger of young people [in Asia] to engage in moral reasoning and debates.” This appetite may exist in the young because the ruling generation has such a atrophied ability in these areas.

In one show that aired recently on Japan’s NHK, Professor Sandel led a panel in a discussion of the question of how the victims of the nuclear accident at Fukushima Daiichi should be compensated. It turned out to be a rather shallow discussion of the obvious issues. Professor Sandel, the celebrity panelists and student participants from China, Japan and the USA were all able to hit on a few obvious ideas of where the money could come from. Students from China felt that the rich should voluntarily contribute to a fund. Others stated the obvious, that TEPCO (the utility) should pay, but it was quickly apparent that doing so would bankrupt the corporation several times over. So rates would have to increase, but is this fair? Perhaps everyone will have to pay through higher taxes. This was about as far as the discussion went.

No one really thought outside the box and asked whether any individual was criminally liable for action or inaction that led to the accident, or made it worse afterwards. No one discussed the role of insurance companies, or the idea that all electrical utilities in Japan could pool resources to compensate for accidents by a single utility. A stronger central government could get the heads of Japan’s top twenty corporations in one room and tell them there is going to be a one-time tax on their cash reserves to cover the enormous cost of this national tragedy. Or Japan could recognize that the disaster is too big for any single country to deal with, and also recognize that the global nuclear industry bears some responsibility. Japan, and the victims in a class action lawsuit, would be justified in making compensation claims outside Japan – regardless of whatever pre-existing deal there was to let General Electric off the hook for liability. Andrew Horvat researched the history of Japan’s entry into nuclear energy, and he describes how scientists were ignored while planners caved in to politics and trade pressure from the U.S. While there were better options such as heavy water reactors designed in Canada (natural rather than enriched uranium, low risk of meltdown), TEPCO went with the General Electric Mark 1 reactor, with its enriched uranium and faulty venting and containment systems that have been known about in the industry since the 1970s.

It is disappointing to see that Professor Sandel couldn’t have led the discussion toward these more provocative views. Here’s another moral dilemma for Professor Sandel to offer to the Japanese for discussion:

A major nuclear accident has just dumped a tremendous amount of nuclear fallout on 2,000 square kilometers of farmland, forest and urban areas (total size of Fukushima Prefecture: 13,000 square kilometers). The size of the area might be much larger, and the extent of the damage and the health effects will take a long time to determine with certainty. Scientific experts have wide disagreements about how dangerous the situation is. Estimates range from the most optimistic, which say countermeasures will cause more harm than the radiation, to the most pessimistic, which say that there will great human suffering and large health costs. There could be birth defects, immune diseases, developmental disorders, widespread increased morbidity (obesity, allergies, diabetes, hormonal disorders) and higher rates of cancer. Contamination in the food and water supply could spread the catastrophe to a much wider area.

If you are the government, you have to decide if it is better to save lives or to save livelihoods. Should you neglect the people in order to save the economy? It seems to be similar to the paradox of a counter-insurgency in which an army has to destroy a village in order to save it.

If the government chooses the precautionary principle this requires the admission that the whole region has to be abandoned. Evacuate everyone and get farmers to stop growing food for the market. Face the reality of the situation, and pay a big cost now in order to avoid the possibility of an enormous public health tragedy in the future.

An examination of government actions since March 2011 shows which way this question has been decided, and it also shows why the Japanese nation is in such desperate need of help from foreign experts in moral philosophy.
Since the nuclear catastrophe, government efforts have leaned heavily on throwing a lifeline to farmers and other economic interests in Fukushima prefecture. Professor Yukio Hayakawa is one of the few to renounce the notion that farmers are the victims that need to be supported by being allowed to sell contaminated food. School children have been fed local products in school lunches, often against their parents’ wishes, and food from Fukushima has been sold nationwide. It is true that much of the produce is not contaminated, but the government failed so badly in setting up an effective screening system that now the public rightfully mistrusts anything with the Fukushima label on it. The public also rightly suspects that because farmers were allowed to grow food, even when it is condemned at harvest it still exists. It is likely to flow into a black market of falsely labelled products. Food labeling scandals are a familiar part of the corrupt distribution system in Japan.

The government is also preparing to spend billions of dollars on decontamination and rehabilitation efforts that will most likely prove to be futile. Recently, people have found that areas that had been decontaminated are now recontaminated with fallout carried by the wind off of forested slopes. Cedar pollen next spring is expected to bring more. And huge amounts of spent nuclear fuel and melted cores are going to be unsecured for years to come. The situation has not been brought under control, no matter how the government decides to define “cold shutdown” in this case.

No relocation funds have been offered to families who want to leave with their children. The government is stuck in the same state of denial as the nuclear plant operators in the first days of the meltdowns. Within hours of losing backup power, it was obvious even to informed amateurs that full meltdowns would occur and the Daiichi site would never generate electricity again. Yet TEPCO management made the situation worse by refraining from emergency measures that would damage the reactors, even though their underlings could tell them they were already a lost cause. They were still under the delusion that the plant could be saved.

Seven months after the disaster, the national and prefectural governments are stuck in the same kind of denial about the destroyed regions of Fukushima. They still believe the contaminated areas can be saved, and they are willing to put citizens lives at risk to make this bet. Time may prove that everything I am saying here is wrong. Perhaps young children really can withstand 20-100 mSv of exposure annually, as well as high levels of internal radiation. Time will tell. But who would take the chance with his own child? There is enough evidence from sixty years of research on the question to suggest that these levels are much too dangerous. Even if an evacuation order proved in the future to have been unnecessary, one could never say that it was a mistake. It would be the wisest and most cautious decision made at the time with the information available. No shame. No regrets.

The population of Fukushima Prefecture is only 1.7% of the Japanese population, and there are some western parts of it are not contaminated. Compared to the enormous costs of reconstruction and decontamination being contemplated now, it would be cheaper and safer to close up every contaminated village and city (including the capital, Fukushima City, which, with numerous Chernobyl-level hot spots, is arguably uninhabitable for children and thus doomed to depopulation even if adults stay). 

If Japan can't handle this internal refugee problem, it can turn to G8 allies like Canada that already take in 250,000 immigrants and refugees annually. This is difficult to contemplate for a First World country like Japan, but completely feasible from an economic perspective when one considers the much larger cost of a hopeless attempt to save these communities. Recently, the government lifted an evacuation order on towns in the 20-30km zone around Fukushima Daiichi, but, as an article in The Economist reports, no one wants to return. They are stating the truth that the government cannot face up to. Even if it were safe to live in these places, the stigma and uncertainty attached to them has condemned them to a rapid decline.

This can be said not only of the small towns near the plant but of Fukushima City also. The residents of this city, representing 0.3% of the population of Japan, could easily be relocated. Let it be the world's second ghost city after Pripyat. Walk away from it and leave the buildings standing, like the dome in Hiroshima, as a museum and monument to the hazards of nuclear agewhich is, of course, precisely what the nuclear industry and its government backers do not want to create. In the future people may visit as tourists, or come to shoot dystopian science fiction movies, and they may marvel that fellow citizens ever contemplated letting the victims continue to live in their irradiated city. If we thought we couldn't afford to evacuate a small city like Fukushima, what would we do for Tokyo? These ruins could stand as a sobering reminder of what would follow a meltdown near a large city, or the atomic bombing of a modern metropolis. Remember that Fukushima was lucky – about 75% of the fallout went southeast over the Pacific.

Unfortunately, the judgment of Japanese leadership has failed. There is a powerful psychological denial in the face of a national trauma. The Japanese government is like an overly sentimental parent who can't consent to an amputation to save a child's life. But sentiment is not the only factor. In fact, the main influence on decisions may be cold-blooded calculation. Bankers don't want to write off mortgages, the Finance Ministry doesn't want to bail out bankers, and the bureaucracy is falling back on an old habit – turning the compensation effort into an engineering task and economic stimulus package of public works projects.

Thus it is the presence of Professor Sandel on Japanese television that makes me think that the cause of so many poor decisions is a truly diminished capacity for moral reasoning among the citizens who have put their heads in the sand, and the governing elite who cannot admit to the horrific costs of past mistakes nor see the best way forward. People seriously believe, and are being told by their government, that citizens of Osaka have a moral obligation to eat the food produced in Fukushima. Yes, it’s complicated, the ruin of farmland is one of the saddest aspects of the tragedy, but if you think it's a tough moral decision, your moral faculties need a workout. A person with intact moral capacity would quickly realize that the needs of the many take precedence over the needs of the few. The farmers can be compensated or given land elsewhere if there is truly a will to help them. It is a shame that the Japanese nation is not capable of imagining better solutions to this crisis.



2011/10/04

One more thing to worry about


 MKS-1501M «Mangust» Bank dosimeter-radiometer (SNIIP, Russia)

"MKS-1501M Instrument is applied in banks in the course of cash money reception and distribution for detection of banknotes with radioactive contamination."
Safe storage of radioactive Series money KSZ-5 (Russia)
"KSZ-5. The container is used for moving and temporary storage of radioactive banknotes, roots and packages."

These odd devices are symbolic of numerous unexpected alterations to normal living that emerge after a nuclear accident. The world breathes a sigh of relief as the media and government pronouncements declare the emergency has been brought under control, but radionuclides dispersed by the meltdown and explosion seem to be an eternal gift that keeps on giving. They show up in the food, sewage sludge, fertilizer, corpses, smoke from burning forests, and banknotes that circulate through the forbidden zones!

2011/10/02

Hollow arguments for continuing with nuclear energy in Japan

A large chunk of habitable and arable land in Northern Japan has been rendered unusable by what is, by some standards of measurement, the worst nuclear, industrial and environmental accident ever. A much larger area of the country has been contaminated with levels of fallout that leave it questionably habitable but undeniably degraded. Yet incredibly, the government and public opinion is still not quite sure if nuclear energy should be abandoned. The common argument is that the dangers of global warming force Japan to stay on the nuclear path, but this is an erroneous assumption for many reasons.

If Japan wants to consider global warming, it has to think about the situation globally. Japan has proven to the world that it is incapable of managing nuclear energy safely. It shouldn’t be given a second chance to prove itself in this regard. In fact, its past safety lapses would really make this something like its 10th chance, depending on how one rates the safety record. At this point it is not only the antinuclear forces that would like to see Japan abandon nuclear energy. It might also be the global nuclear industry itself that would like to have this embarrassing actor leave the nuclear stage. The IAEA leadership is too diplomatic to criticize members, and they all have their own record of imperfections, but we can hope that behind the bland IAEA statements made to save Japanese face, there is finally a realization emerging that nuclear plants should not be built in seismic zones, and all of Japan is a seismic zone. In fact, as this map shows, most of the world's nuclear plants have, sensibly, not been built in areas of known seismic activity.

If nuclear energy really is necessary to forestall global warming, then a globally planned use of nuclear energy would see that countries that are prone to earthquakes could continue to use fossil energy while nuclear reactors were operated safely elsewhere. This could be done in a way that still led to a global decline in fossil fuel consumption.

In any case, Japan may not have a great need for energy in the future. It’s population is declining, and industrial production was shifting overseas before the Fukushima disaster. It somehow managed to get through the summer of 2011 with almost no nuclear power being used. With a modest conservation attempt and rapid restart of fossil fuel generators, it did just fine. In the future, it will make further gains through solar and other emerging technologies.

The real reasons that Japan is slow to admit the end of its nuclear era are likely bureaucratic inertia, pride and investments in a technology that was supposed to be the way of the future. Japanese corporations are heavily invested in promoting reactor sales in Japan and abroad, and they resent having their plans disrupted by the incompetence of TEPCO in its misuse of a forty-year-old reactor design.

But the greatest fear is probably that no player in the nuclear game wants to face up to the back end cost of nuclear energy. The utilities never charged for this in their rates, and they haven’t put money aside for it, even though they knew that nuclear plants would need to be decommissioned after forty to sixty years of operation. Utilities all over the world have just kicked this cost down the road, hoping that the cost would be shifted to government budgets. Even if TEPCO had put money aside for decommissioning, the company would now have to spend it all on compensating the victims of their negligent crime.

The cost of decommissioning is huge, and there is no market demand for it. When consumers buy kilowatts they get something that they can use, but there is nothing for consumers to gain from in the billion dollar teardown of an aging reactor. The fact is that ratepayers and taxpayers of today will need to be forced to pay for the electricity sold too cheaply in the past. A nice gift for the generation that had not even been born at the time national policy went down the nuclear road. 

2011/10/01

Putting it bluntly....

From:

No Immediate Danger, Prognosis for a Radioactive Earth, by Dr Rosalie Bertell 
The Book Publishing Company, Summertown, Tennessee 38483 
ISBN 0-913990-25-2 
pages 15-63

"In 1964 Hermann Muller published a paper, Radiation and Heredity, spelling out clearly the implications of his research for genetic effects (damage to offspring) of ionising radiation on the human species... Muller predicted the gradual reduction of the survival ability of the human species as several generations were damaged through exposure to ionising radiation. This problem of genetic damage continues to be mentioned in official radiation-health documents under the heading 'mild mutations,' but these mutations are not 'counted' as health effects when standards are set or predictions of health effects of exposure to radiation are made. There is a difficulty in distinguishing mutations caused artificially by radiation from nuclear activities from those which occur naturally from earth or cosmic radiation. A mild mutation may express itself in humans as an allergy, asthma, juvenile diabetes, hypertension, arthritis, high blood cholesterol level, slight muscular or bone defects, or other genetic 'mistakes.' These defects in genetic make-up leave the individual slightly less able to cope with ordinary stresses and hazards in the environment. Increasing the number of such genetic 'mistakes' in a family line, each passed on to the next generation, while at the same time increasing the stresses and hazards in the environment, leads to termination of the family line through eventual infertility and/or death prior to reproductive age. On a large scale, such a process leads to selective genocide of families or species suicide."
(italics added)
source quoted:
H. Muller. "Radiation and Heredity." American Journal of Public Health, vol 54, no. 1, 1964, pp. 42-50.

2011/09/25

The implications of 27,000 becquerels per square meter?

For the last six months, residents of Northern Japan have had to contend with a confusing list of ways to measure radiation in air water, soil and food. Now that the major releases to the air are over, one of the most important measurements is the data on soil contamination because this determines what will enter the food chain. So what does it mean for people in the Tokyo area to be told that the soil has 27,000 becquerels per square meter, some places more, some places less? A good point of comparison is a map of fallout on Western Europe after Chernobyl. As the scale in the photo goes from yellow, to pale orange, to orange, the numbers go from 1,000 to 40,000 becquerels per square meter. For the most part, "lightly" contaminated areas south of Fukushima are at the same level that large parts of France, Germany, Poland and other parts of Europe have had for 25 years. No one panicked and evacuated from these regions, and no one noticed large, obvious health effects that could be definitely traced to radiation exposure. But it is a matter of speculation as to whether this level of contamination contributed to cancer rates and so called "epidemics" of morbidity, such as obesity, heart disease, and diabetes, that have been noted during these recent decades.

2011/09/21

22 Reactors in the US are of the same design as the failed reactors in Fukushima

22 aging nuclear reactors in the US that are of the same age and flawed design as the reactors at Fukushima Daiichi (some locations have more than one reactor)



Arnie Gundersen, a former member of the US Nuclear Regulatory Commission, now does consulting work for citizens groups advocating on nuclear issues. Since the Fukushima accident, he has become a leading figure in helping the public understand the issues at stake. Followers in Japan like him so much that they have voluntarily begun translating everything published on his website over the last six months.
In his recent post, Arnie spoke on an issue that should be of high concern for everyone in Canada and the US. The reactors that exploded in Fukushima are exactly the same as 22 Boiling Water Mark 1 General Electric Reactors still in operation in the US. They are getting old, and their failings have been known for a long time, as this NRC memo shows:

NRC Memo dated September 25, 1972
Note to John F. O'Leary
... the acceptance of pressure suppression containment concepts by all elements of the nuclear field, including Regulatory and ACRS, is firmly embedded in the conventional wisdom. Reversal of this hallowed policy, particularly at this time, could well be the end of nuclear power. It would throw into question the continued operation of licensed plants, and would make unlicensable the GE and Westinghouse condensor plants now in review, and would generally create more turmoil that I can stand thinking about.
      - Joseph M. Hendrie

In other words, they knew the design was flawed, but it's too late to go back and change everything now. It's too personally bothersome for the author of the memo, so forget about it. Fortunately, the Three Mile Island nuclear plant was not a Mark 1 reactor. Its superior, larger containment structure is what prevented that accident from being much worse. 
After Three Mile Island, the nuclear industry reluctantly recognized that something had to be done, so they installed a venting system which would release hydrogen gas in the event of a loss of station power and a meltdown of fuel. This system was in place in Fukushima, but for reasons not yet fully explained to the public, it didn't work. It could be because opening the valve required a worker to go into a highly radioactive environment, in full protective gear, and turn a valve 200 times. In the midst of the crisis, no one wanted to send a worker in on a suicide mission. The reactor design failed on all three reactors that were in operation at Fukushima Daiichi.
Even someone as pro-nuclear as the former director of the IAEA, Mohamed AlBaradei, has come out in favor of shutting down these aging, flawed reactors, saying "We must not hesitate to close old reactors the safety of which cannot be guaranteed. I suggest starting with the review of the RBMK type (as in Chernobyl), [Still in operation!] which don't have containment structures, and those of the Fukushima design."
This post is a shout-out to friends and relatives in Canada who live across the lake from Oswego, New York, where there are two Mark 1 reactors still in operation. Some Canadians worry about the reactors closer to home, but these heavy water reactors in Canada have a superior design and excellent safety record. (A recent article in the Literary Review of Canada covers the unfortunate decision of the Japanese to pass over CANDU reactors in favor of American technology.) The first priority for nuclear safety in North America should be the decommissioning of the aging General Electric Mark 1 reactors.

Further reading: Marks to Market: America's Nuclear Time Bombs


2011/09/18

An ounce of prevention for Fukushima?

Update: Shortly after I put up this post, The Japan Times ran an article on this topic on September 20, 2011. The focus was mostly on food preparation, with no mention of the benefits of taking mineral supplements. On September 22, 2011, Christopher Busby, a leading expert on the biological effects of radiation, announced the launch of an organization that will distribute mineral supplements to children in Japan.

Since the nuclear core meltdowns and explosions at Fukushima Daiichi Nuclear Plant there has been much debate about what the health effects on the population will be. On one side, the Pollyanas claim the effects will be barely noticeable. On the other side, the Cassandras claim there will be enoromous effects on the population and the environment. While both sides admit that the internal absorption of radionuclides is harmful, it is stragne that neither side has had much to say about preventive measures that can be taken to remove radionuclides from the body.

The Japanese government has talked much about soil decontamination, but it dreads to face the safer but more expensive option of moving people away from contaminated land permanently. The government has also been unrealistic in its discussion of what radionuclide decontamination means. It is not similar to chemical spills that are smaller and can be cleaned up and neutralized. The high level contamination extends over 2,000 square kilometers, and there is a much wider area of low level contamination. The scale of the task renders decontamination impossible, especially when one considers that decontamination workers would be be exposed to unacceptable levels of radiation.

One decontamination plan is to remove the first few centimeters of topsoil, but then one must put the topsoil somewhere. In addition, topsoil is a precious resource that cannot be easily replaced. Another plan is to treat the topsoil in a way that filters out the radionuclides, but this leaves one with the problem of how to dispose of what is filtered out.

So it's clear that decontamination is really the wrong word to use. The contaminants are just being moved around rather than neutralized or destroyed. This effort to decontaminate really means separating radionuclides from contact with humans, other organisms and the environment. 

This "decontamination" could be done best by moving people away from contaminated areas, halting production of food in contaminated areas, and preventing any further spread of the contaminants - for example, by stopping the burning of organic waste. Unfortunately, we have to consider the second best option because Japanese society seems determined to neglect these best options. After six months of waiting for the government to provide adequate help to victims, it is clear now that they are going to be left to live on contaminated lands. They need to be trained and assisted in protecting their bodies from accumulating radionuclides. And this is not only for the people of Fukushima Prefecture, but for who anyone consumes tainted food that will find its way to markets in Japan and elsewhere.

In Chernobyl: Consequences of the Catastrophe for People and the Environment Yablokov et. al. state, "Daily exposure to small amounts of radionuclides (mostly cesium 137) is virtually unavoidable as they get into the body with food (up to 94%), with drinking water (up to 5%), and through the air (about 1%)... The incorporation of radionuclides is now the primary cause of the deterioration of public health in contaminated territories." 

Citing the work of Banderzhevskaya et. al., they write, "There is evidence that incorporation of 50 Bq/kg of cesium 137 into a child's body can produce pathological changes in vital organ systems (cardiovascular, nervous, endocrine, and immune) as well as in the kidneys, liver, eyes and other organs (Bandazhevskaya et al., 2004). Such levels are not unusual in the Chernobyl-contaminated areas of Belarus, Ukraine and European Russia nowadays... It is necessary to use all possible measures to decrease the level of radionuclide incorporation in people living in those territories."

In many areas near the Fukushima Daiichi Nuclear Plant, levels of radionuclide deposition are at the same dangerous levels that are still found in parts of Belarus, Russia and the Ukraine, so the issue of cesium 137 absorption is just as critical for people in Japan. It's in the soil, the food supply, and in the sewage which the Japanese might be foolish enough to put into fertilizer that goes back in the soil. Or they might burn contaminated organic waste, putting the cesium back into the atmosphere to rain down on Japan, the ocean or neighboring countries. Whatever happens, the cesium is here to stay, so the advice of Yablokov et. al. "to use all possible measures" applies to Japan. It may be worthwhile to fight for the ideal situation in which victims receive compensation with which to restart their lives in a safe location, but the reality is that this help is not likely to come. 

Researchers who have studied ways to disincorporate radionuclides from the body come to these conclusions:

In the way that a thyroid gland well stocked with stable iodine will not absorb the radioactive isotope of iodine 131, other minerals can reduce the absorption of other radionuclides. Potassium resembles cesium and rubidium, and muscle cells that need potassium will absorb rubidium (harmless) or radioactive cesium (harmful) if they are present. Similarly, bones will absorb radioactive strontium when they are in search of calcium. Iron can block the uptake of plutonium. So the suggestion of these researchers is to supplement the diet of people in contaminated areas with stable elements of potassium, rubidium, calcium and iron so that cells full of these elements will not absorb radionuclides. Iodine is not mentioned because radioactive iodine 131 has a short half-life of eight days and is not a concern after the initial emergency has passed. 

Furthermore, they suggest "... increasing consumption of fluids and fibre. ... Soaking in water, scalding, salting, and pickling foods such as mushrooms and vegetables and processing the fats in milk and cheeses can reduce the amount of radionuclides in some foods severalfold... Antioxidant vitamins A and C and the microelements iron, copper, zinc, selenium and cobalt, ... interfere with free-radical formation."

They also note that pectin has been very effective in eliminating cesium from the body. The Belrad Institute in Minsk has developed a product called Vitapect that they promote to alleviate the public health disaster. (If you have a problem with this organization making money off this, consider the good work this organization does and hope that they prosper.)

The interesting question to ask is why these preventive measures have not been given more publicity. There has been very little about it in the Japanese or foreign media, mainstream or otherwise. It is perhaps understandable that the government and the nuclear industry would not advertise these methods. It would be an admission that there is indeed a reason to worry about the effects of this accident. Nonetheless, it might help the government's and TEPCO's image in the future if they can point out that they did everything possible to limit damage. 

It is more difficult to understand why the anti-nuclear side has not promoted preventive measures. Their decision not to publicize the research mentioned above has some unpleasant implications. They may not want to encourage people to falsely believe that they can protect themselves from the grave harm of radiation. They may hesitate to give the medical advice to take mineral supplements because for some people with medical conditions it might not be advisable, but this concern can be covered by adding standard advice to consult with a physician. 

The most disturbing question the anti-nuclear advocates need to answer is whether they could be content years from now to find out things were not as bad as they feared because preventive help was given. Having staked out the position that Fukushima will be a public health disaster, and that a wider evacuation is necessary, can they offer advice now to individuals who want to protect themselves in the non-ideal situations that they find themselves in? Unfortunately, preventive measures will just add confounding variables to the natural experiment. It presents a moral dilemma to the antinuclear movement, but after a few seconds of hesitation, the right thing to do should be obvious. 

A mass distribution of mineral supplements is, compared to all other measures under consideration, inexpensive, practical and supported by research. This absence from the news coverage and blogosphere discussion of Fukushima is inexplicable.


Sources:

1. Belrad Institute http://www.belrad-institute.org/UK/doku.php
2. Alexey V. Yablokov, Vassily B. Nesterenko, and Alexey V. Nesterenko, Chernobyl: Consequences of the Catastrophe for People and the Environment, vol. 1181:303-304. (New York: Annals of the New York Academy of Sciences, 2009). http://www.nyas.org/Publications/Annals/Detail.aspx?cid=f3f3bd16-51ba-4d7b-a086-753f44b3bfc1
3. G.S. Bandazhevskaya, Nesterenko, V.B., Babenko, V. I., Yerkovich, T.V., & Bandazhevsky, Yu. I. "Relationship between Caesium (137Cs) load, cardiovascular symptoms, and source of food in ‘Chernobyl’ children – preliminary observations after intake of oral apple pectin," Swiss Medical Weekly. 134 (2004): 725-729. http://www.smw.ch/docs/pdf200x/2004/49/smw-10219.pdf

2011/09/13

Countdown to Zero

2010 Documentary on Nuclear Weapons: Countdown to Zero

"Watching this film, I had a terrible image of Walker as a modern-day Cassandra warning the Trojans; humanity is not well equipped to deal with background-hum threats — just note the current head-in-the-sand response to the spread of Cesium-137 throughout Japan, or the inability to find consensus on actions to halt global warming. Just like the all-too-apparent threat of reactors built on fault lines, her clear warning will most likely be ignored until it is too late."

-Giovanni Fazio, The Japan Times 2011/09/09