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D'coda Dcoda

Thorium, Not The Nuclear Savior Claimed [14Sep11] - 0 views

  • The misinformation on thorium is highly promoted by the nuclear industry and various companies that want investment dollars for thorium reactors and fuel
  • One myth is that thorium is safe. Thorium-232 has a half life of 14 billion years (billions, not millions). Thorium-232 is also highly radiotoxic, with the same amount of radioactivity of uranium and thorium, thorium produces a far higher dose in the body. If someone inhaled an amount of thorium the bone surface dose is 200 times higher than if they inhaled the same amount of uranium. Thorium also requires longer spent fuel storage than uranium. With the daughter products of thorium like technetium‐99 with a half life of over 200,000 years, thorium is not safe nor a solution to spent fuel storage issues.
  • Another myth is that thorium reactors can run at atmospheric temperatures, in order to produce power they must be run differently and would not be at atmospheric temperatures. Many of the thorium reactors use liquid sodium fluoride in the reactor process. This material is highly toxic and has its own series of risks. The creation of thorium fuels is also not safer than creating uranium fuels. Thorium poses the same nuclear waste and toxic substance problems found in mining and fuel milling of uranium.
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  • Thorium power production has been experimented with for over 50 years. Thorium breeder reactors have been experimented with but have technical issues and breed fuel at lower rates than tradiational breeder reactors. It is frequently claimed that India has a bunch of successful thorium commercial power reactors. The reality is that India has been trying for decades and still has not developed a commercial thorium reactor. Thorium is also not more economical to run. The fuel cycle is more costly and the needed protections for workers, plant safety and the public are considerably more than existing fuels.
  • The Germans experimented with a Thorium reactor, the THTR-300. They found even with the thorium reactor there were substantial risks in a loss of coolant event. They also had issues with concrete structures failing due to extremely high heat, fracturing thorium fuel and hot spots in the reactor. There was also a radioactive release into the air due to a malfunction. The reactor was eventually scrapped due to technical problems and costs.
  • Another rather silly claim going around is that “thorium is so safe you can handle it with your bare hands!”. Sorry, but you can do the same thing with a uranium fuel pellet.
  • More reading: http://de.wikipedia.org/wiki/Kernkraftwerk_THTR-300 http://www.ieer.org/fctsheet/thorium2009factsheet.pdf http://helian.net/blog/2010/09/01/nuclear-weapons/subcritical-thorium-reactors-dr-rubbias-really-bad-idea/ http://en.wikipedia.org/wiki/Molten_salt_reactor
D'coda Dcoda

The Thorium Reactor, A Nuclear Energy Alternative [19Sep11] - 0 views

  • After Fukushima a great deal of awareness on the dangers of nuclear energy has ignited a series of reactions in society, mainly a generalized rejection to nuclear energy and a call to develop cleaner and safer sources of energy. When thinking about nuclear energy mainly 2 sources come to peoples minds, solar and wind power condemning any sort of nuclear power.  Nuclear power has been associated with Weapons of Mass Destruction, radiation sickness and disease.  However, this is not due to the nuclear power itself but due to the nuclear fuel used to generate this nuclear power.
  • The above are just some of the most common byproducts, (better known as nuclear waste) of a nuclear fuel cycle, all of these substances are extremely poisonous, causing a variety of diseases, cancers and genetic mutations to the victim.  The worst part is that most of them remain in the environment of decades or even thousands of years, so if accidentally released to the environment they become a problem that future generations have to deal with.  Therefore, in nuclear energy the problem is in the fuel not in the engine. Lets start with the Thorium Reactors.  Thorium is a naturally occurring radioactive chemical element, found in abundance throughout the world.  It is estimated that every cubic meter of earth’s crust contains about 12 grams of this mineral, enough quantity to power 1 person’s electricity consumption for 12-25 years.  Energy is produced from thorium in a process known as the Thorium Fuel Cycle, were a nuclear fuel cycle is derived from the natural abundant isotope of thorium.
  • In today’s world the main fuel for nuclear power is a naturally occurring radioactive mineral, Uranium.  This mineral is one of the most dense metals in the periodic table which allows it to reach a chain reaction that can yield huge amounts of energy that can be exploited for an extended period of time.  Unfortunately the nuclear fuel cycle of Uranium produced extremely dangerous byproducts, commonly known as nuclear waste.  These are produced in liquid, solid and gaseous form in a wide variety of deadly substances, such as: Iodine 131 Strontium 90 Cesium 137 Euricium 155 Krypton 85 Cadmium 113 Tin 121 Samarium 151 Technetium-99
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  • Thorium can be used as fuel in a nuclear reactor, and it is a fertile material, which allows it to be used to produce nuclear fuel in a breeder reactor.  These are some of the benefits of Thorium reactors compared to Uranium. Weapons-grade fissionable material is harder to retrieve safely and clandestinely from a thorium reactor; Thorium produces 10 to 10,000 times less long-lived radioactive waste; Thorium comes out of the ground as a 100% pure, usable isotope, which does not require enrichment, whereas natural uranium contains only 0.7% fissionable U-235; Thorium cannot sustain a nuclear chain reaction without priming,[22] so fission stops by default. The following conference by Kirk Sorensen explains a Liquid-Fuoride Thorium Reactor a next generation nuclear reactor.
  • References Thorium – Wikipedia, the free encyclopedia http://bit.ly/qYwoAv Thorium fuel cycle – Wikipedia, the free encyclopedia http://bit.ly/piNoKb Molten salt reactor – Wikipedia, the free encyclopedia http://bit.ly/qlyAxe Thorium Costs http://bit.ly/oQRgXK Thorium – The Better Nuclear Fuel? http://bit.ly/r8xc92
D'coda Dcoda

: Is Thorium the Energy Panacea We Have Been Waiting For? [29Nov11] - 0 views

shared by D'coda Dcoda on 12 Dec 11 - No Cached
  • conversations have been popping up about thorium in recent years and how it can be a game-changer in the energy industry. Thorium has incredible potential as an ultra-safe, clean, and cheap nuclear energy source which can power the world for millennia.
  • Thorium is found naturally in rocks in the form of thorium-232, and has a half-life of about 14 billion years. Estimates by the International Atomic Energy Agency (IAEA) show it is about three times more common in the Earth's crust than uranium. It can be obtained through various methods, most commonly through the extraction from monazite sands. Known reserves of thorium are not well-known due to lack of exploratory research. The US Geological Service estimates that the USA, Australia, and India hold the largest reserves. India is believed to have the lion's share of thorium deposits. In the United States, Idaho contains a large vein deposit. The world has an estimated total of 4.4 million tons
  • A newly created organization known as the Weinberg Foundation has taken up the cause of promoting thorium energy. The foundation was named after Dr. Alvin Weinberg, a nuclear energy researcher in the 1960s who laid out the vision of safe and abundant thorium power. He pioneered the Molten Salt Reactor using thorium in its liquid fuel form at the US Oak Ridge National Laboratory. This reactor had an inherently safer design and dramatically reduced the amount of atomic waste in comparison to typical nuclear reactors. Unfortunately, the thorium reactor program was not fully pursued due to political and military reasons.
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  • Thorium reactors offer absolutely zero possibility of a meltdown because it cannot sustain a nuclear chain reaction without priming; fission would stop by default.- Thorium reactions do not create weapons-grade by-products.- Waste from a thorium reactive stays radioactive for only a few hundred years rather than tens of thousands of years.- Pure thorium from the ground does not require enrichment, as opposed to uranium.
  • there are projects underway in the United States, China, India, and elsewhere. Germany and India already have existing commercial power stations powered by thorium. India has a goal of meeting 30 percent of its energy needs from thorium by the year 2050. In the US, a reactor project is ongoing in Odessa Texas and should be operational by 2015.
  • For more information: http://www.the-weinberg-foundation.org/index.php
D'coda Dcoda

Ambrose Evans-Pritchard: "Chinese Are Going for the Safe, Thorium Reactors, and They Ar... - 0 views

  • The Telegraph's commentator also thinks, along with many nuke proponents that inhabit the world, that "there has never been a verifiable death" in the West from the nuclear power. (I suppose he doesn't include Russia as part of the West.)Right.In his own words, from The Telegraph 3/20/2011 right before he headed off to the Mayan Highlands:
  • Safe nuclear does exist, and China is leading the way with thoriumA few weeks before the tsunami struck Fukushima’s uranium reactors and shattered public faith in nuclear power, China revealed that it was launching a rival technology to build a safer, cleaner, and ultimately cheaper network of reactors based on thorium.
  • This passed unnoticed –except by a small of band of thorium enthusiasts – but it may mark the passage of strategic leadership in energy policy from an inert and status-quo West to a rising technological power willing to break the mould.
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  • If China’s dash for thorium power succeeds, it will vastly alter the global energy landscape and may avert a calamitous conflict over resources as Asia’s industrial revolutions clash head-on with the West’s entrenched consumption
  • China’s Academy of Sciences said it had chosen a “thorium-based molten salt reactor system”. The liquid fuel idea was pioneered by US physicists at Oak Ridge National Lab in the 1960s, but the US has long since dropped the ball. Further evidence of Barack `Obama’s “Sputnik moment”,
  • “If it begins to overheat, a little plug melts and the salts drain into a pan. There is no need for computers, or the sort of electrical pumps that were crippled by the tsunami. The reactor saves itself,” he said.
  • “The reactor has an amazing safety feature,” said Kirk Sorensen, a former NASA engineer at Teledyne Brown and a thorium expert
  • Chinese scientists claim that hazardous waste will be a thousand times less than with uranium. The system is inherently less prone to disaster.
  • “They operate at atmospheric pressure so you don’t have the sort of hydrogen explosions we’ve seen in Japan. One of these reactors would have come through the tsunami just fine. There would have been no radiation release.”
  • why aren't the nuke reactors in the world thorium-based, by now? Evans-Pritchard says it's because thorium cannot be made into weapons: US physicists in the late 1940s explored thorium fuel for power. It has a higher neutron yield than uranium, a better fission rating, longer fuel cycles, and does not require the extra cost of isotope separation.The plans were shelved because thorium does not produce plutonium for bombs.
  • Evans-Pritchard further says western-lifestyle needs nuclear power, and no one has died from nuclear power: I write before knowing the outcome of the Fukushima drama, but as yet none of 15,000 deaths are linked to nuclear failure. Indeed, there has never been a verified death from nuclear power in the West in half a century. Perspective is in order.
  • The International Atomic Energy Agency said the world currently has 442 nuclear reactors. They generate 372 gigawatts of power, providing 14pc of global electricity. Nuclear output must double over twenty years just to keep pace with the rise of the China and India.
  • As the Fukushima I Nuke Plant accident has made abundantly clear to many people (clearly Evans-Pritchard is not one of them), it is the human errors that make up the accident - from the design of the reactor and the plant, fitting the pipes that don't fit, hiding the condition of the degrading parts and equipments and structures and the regulatory agency who helps the operator to hide them, to name only a few.
  • It doesn't quite matter how safe thorium is, when the most dangerous and unpredictable component of all is the humans
Dan R.D.

No Meltdowns or Bombs with Thorium Electrical Power Generation [09Jul11] - 0 views

  • After Fukushima, the Chinese governement have decided to finance the development of the much safer Thorium Fuelled Molten Salt Reactor - this way of producing energy is far safer than Pressure Water Reactor - it does not need pressure and there is no meltdown possibility at all. Further Thorium reactors cannot be used to make nuclear bombs.
  • Thorium is as common as lead, and should have been chosen after the war.At the end of the 2nd World War war plutonium was needed to make nuclear bombs, and this was the main reason for taking the PWR route, because Thorium reactors cannot. Edward Teller - the designer of the atomic bomb - on his death bed - said that a Thorium Fuelled Molten Salt Reactor was a safer design and that the basic Thorium fuel more available than Uranium. He was working on a paper for this type of reactor at his death (see below).
  • It would cost about 1 billion to design a Thorium reactor (Twitter is valued at 7 billion).
D'coda Dcoda

What do you do with the waste? - Kirk Sorensen's answers [13Oct11] - 0 views

  • What do you do with the waste? – Kirk Sorensen’s answers by Rod Adams on October 13, 2011 in Fuel Recycling , Nuclear Batteries , Nuclear Waste , Plutonium , Thorium Share3   Gordon McDowell, the film maker who produced Thorium Remix , has released some additional mixes of material gathered for that production effort. One in particular is aimed at those people whose main concern about using nuclear energy is the often repeated question “What do you do with the waste.” Many people who ask that question think that it is a trump card that should end all conversation and let them win the hand. I used to play bridge and enjoyed it when I could “no trump” a smug contestant who thought he had a winner. Kirk’s discussion below is one example of how that can be done in the nuclear energy field . My friends who like the Integral Fast Reactor have another answer . I am pretty certain there are dozens of other good answers to the question – the primary obstacle to implementing them comes from the nefarious forces that LIKE raising (artificial) barriers to the use of nuclear energy. On another note, I want to point to a story published in the evening of October 12, 2011 on the Wall Street Journal web site titled WSJ: Fluor Buys Stake In Reactor Maker NuScale Energy . I am happy to see that NuScale has found a suitable, deep pockets investor with a lot of nuclear plant engineering and construction experience. One more short note. Jay Hancock, a writer for the Baltimore Sun, has taken note of some of the work published on Atomic Insights regarding Exelon’s decision to destroy the Zion Nuclear power station rather than allowing it to compete against existing power plants to increase the supply and decrease the price of electricity. On October 8, 2011, Hancock published a column titled State should pull plug on Constellation-Exelon deal that explored whether or not it would be beneficial for Marylanders to allow a company like Exelon to own a dominant number of electrical power generation facilities in the state. One of the pieces of evidence that has convinced Hancock to oppose the proposed merger is the way that Exelon has acted with regard to the Zion nuclear station. He recognizes that the company has adequately demonstrated a history of using market power to drive up prices and profits at the expense of customer interests. Additional reading related to Exelon bear hug attempt: EDF Asks Maryland Regulators To Block Exelon-Constellation Merger
  • What do you do with the waste? – Kirk Sorensen’s answers by Rod Adams on October 13, 2011 in Fuel Recycling, Nuclear Batteries, Nuclear Waste, Plutonium, Thorium Share3  Gordon McDowell, the film maker who produced Thorium Remix , has released some additional mixes of material gathered for that production effort. One in particular is aimed at those people whose main concern about using nuclear energy is the often repeated question “What do you do with the waste.” Many people who ask that question think that it is a trump card that should end all conversation and let them win the hand. I used to play bridge and enjoyed it when I could “no trump” a smug contestant who thought he had a winner. Kirk’s discussion below is one example of how that can be done in the nuclear energy field . My friends who like the Integral Fast Reactor have another answer. I am pretty certain there are dozens of other good answers to the question – the primary obstacle to implementing them comes from the nefarious forces that LIKE raising (artificial) barriers to the use of nuclear energy. On another note, I want to point to a story published in the evening of October 12, 2011 on the Wall Street Journal web site titled WSJ: Fluor Buys Stake In Reactor Maker NuScale Energy. I am happy to see that NuScale has found a suitable, deep pockets investor with a lot of nuclear plant engineering and construction experience. One more short note. Jay Hancock, a writer for the Baltimore Sun, has taken note of some of the work published on Atomic Insights regarding Exelon’s decision to destroy the Zion Nuclear power station rather than allowing it to compete against existing power plants to increase the supply and decrease the price of electricity. On October 8, 2011, Hancock published a column titled State should pull plug on Constellation-Exelon deal that explored whether or not it would be beneficial for Marylanders to allow a company like Exelon to own a dominant number of electrical power generation facilities in the state.
  • Gordon McDowell, the film maker who produced Thorium Remix, has released some additional mixes of material gathered for that production effort. One in particular is aimed at those people whose main concern about using nuclear energy is the often repeated question “What do you do with the waste.” Many people who ask that question think that it is a trump card that should end all conversation and let them win the hand. I used to play bridge and enjoyed it when I could “no trump” a smug contestant who thought he had a winner. Kirk’s discussion below is one example of how that can be done in the nuclear energy field
D'coda Dcoda

"Green Nukes" - Important climate change mitigation tools [05Jul11] - 0 views

  • There are many terrific reasons to favor the rapid development of nuclear fission technology.
  • It is a reliable and affordable alternative to hydrocarbon combustionIt is a technology that can use less material per unit energy output than any other power sourceIt is a technology where much of the cost comes in the form of paying decent salaries to a large number of human beingsIt is a technology where wealth distribution is not dependent on the accident of geology or the force of arms in controlling key production areasIt is an energy production technology where the waste materials are so small in volume that they can be isolated from the environmentIt is a technology that is so emission free that it can operate without limitation in a sealed environment – like a submarineIt is an important climate change mitigation too
  • Our current economy is built on an industrial foundation that removes about 7-10 billion tons of stored hydrocarbons from the earth’s crust every year and then oxidize that extracted material to form heat, water and CO2 – along with some other nasty side products due to various impurities in the hydrocarbons and atmosphere. The 20 billion tons or so of stable CO2 that we dump into the atmosphere is not disappearing – there are some natural removal processes that were in a rough balance before humans started aggressive dumping, but most of the mass of CO2 that we are pumping into the thin layers of atmosphere that surround the Earth is not being absorbed or used.
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  • As Curt Stager and other researchers like him have determined, the material will be suspended in our atmosphere and affecting our climate for at least 100,000 years. Many of the effects are somewhat unpredictable and not terribly beneficial. The duration of the effect gets worse if we continue on our present course and speed. An unaltered dependence on fossil fuels also puts future generations at risk of trying to figure out how to operate an economy WITHOUT access to reliable sources of controlled heat.
  • The twin attributes of supply sustainability and climate change mitigation are nuclear fission power advantages topics that have attracted some high profile converts (Mark Lynas, George Monbiot, James Hansen, Stewart Brand, Gwyneth Cravens, and Patrick Moore, for example) to the cause of pronuclear advocacy. If nuclear energy’s potential as a climate change mitigation strategy is something that attracts former antinuclear protesters and causes them to reevaluate their opposition, that alone makes it something worth emphasizing
  • It was interesting to hear that the primary nuclear technology that Curt mentions as being worth aggressive pursuit is based on thorium, but I am pretty sure that is mainly because thorium evangelists have done a better job of guerilla marketing since 2005 than the people who have been refining uranium-based nuclear reactors for the past 5 decades.
  • As I often to tell my thorium enthused friends – you cannot build or operate a thorium reactor without uranium. I also tell both my buddies who are thorium advocates and my integral fast reactor (IFR) friends that any atomic fission power plants is better than any hydrocarbon based power plant. I hope that someday soon, fission fans will stop engaging in fratricidal attacks on each other, but I guess I have always been a bit of a dreamer
D'coda Dcoda

Mini-Nukes Back From Grave As Fluor Invests In NuScale Power [16Oct11] - 0 views

  • NuScale Power–one of the pioneers in small, modular nuclear reactors—is back from the dead, thanks to a $30 million infusion from global construction giant Fluor.
  • Under the terms of the deal, Fluor will invest $30 million into Corvallis, Oregon-based NuScale, as well as help the company navigate the arduous and technically complex approval and licensing process. Fluor will also cooperate with NuScale on procurement, logistics and construction when it comes time to build its power plants.
  • NuScale suspended operations in January amid a cash crunch. Modular nuclear reactors take uranium, or in some cases thorium, and produce steam for turbines via heat generated in fission reactions. That is pretty much how large nuclear power plants operate. The difference comes in manufacturing and construction.
D'coda Dcoda

LFTR in Five Minutes - Is thorium better than a silver bullet energy solution? [10Oct11] - 0 views

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D'coda Dcoda

(Part 2) Professor Tatsuhiko Kodama of Tokyo University Tells the Politicians: "What Ar... - 0 views

  • Professor Kodama is the head of the Radioisotope Center at the University of Tokyo.Professor Kodama's anger is now directed toward the government's non-action to protect people, especially children and young mothers, from internal radiation exposure. His specialty is internal medicine using radioisotope, so he says he has done the intense research on internal radiation:
  • I have been in charge of antibody drugs at the Cabinet Office since Mr. Obuchi was the prime minister [1998-]. We put radioisotopes to antibody drugs to treat cancer. In other words, my job is to inject radioisotopes into human bodies, so my utmost concern is the internal radiation exposure and that is what I have been studying intensely.
  • The biggest problem of internal radiation is cancer. How does cancer happen? Because radiation cuts DNA strands. As you know, DNA is in a double helix. When it is in a double helix it is extremely stable. However, when a cell divides, the double helix becomes single strands, doubles and becomes 4 strands. This stage is the most vulnerable.
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  • Therefore, the fetuses and small children, with cells that rapidly divide, are most susceptible to radiation danger. Even for adults, there are cells that rapidly divide such as hair, blood cells and intestinal epitheria, and they can be damaged by radiation.Let me give you an example of what we know about internal radiation.
  • One genetic mutation does not cause cancer. After the initial hit by radiation, it needs a different trigger for a cell to mutate into a cancer cell, which is called "driver mutation" or "passenger mutation". (For details please refer to the attached document about the cases in Chernobyl and cesium.)Alpha radiation is most famous. I was startled when I learned of a professor at Tokyo University who said it was safe to drink plutonium.
  • Alpha radiation is the most dangerous radiation. It causes thorotrast liver damage, as we, liver specialists, know very well.Internal radiation is referred to as such-and-such millisieverts, but it is utterly meaningless. Iodine-131 goes to thyroid gland, and thorotrast goes to liver, and cesium goes to urothelium and urinary bladder. Whole body scan is utterly meaningless unless you look at these parts in the body where radiation accumulates.
  • Thorotrast was a contrast medium used in Germany since 1890. It was used in Japan since 1930, but it was found that 25 to 30% of people developed liver cancer 20 to 30 years later.Why does it take so long before cancer develops? Thorotrast is an alpha-radiation nuclide. Alpha radiation injures nearby cells, and the DNA that is harmed most is P53. We now know, thanks to genome science, the entire sequence of human DNA. However, there are 3 million locations on the DNA that are different from person to person. So today, it doesn't make sense at all to proceed as if all humans are the same. The basic principle should be the "personal life medicine" when we look at internal radiation - which DNA is damaged, and what kind of change is taking place.
  • In case of thorotrast, it is proven that P53 is damaged in the first stage, and it takes 20 to 30 years for the 2nd, 3rd mutations to occur, causing liver cancer and leukemia.About iodine-131. As you know, iodine accumulates in thyroid gland, and that is most noticeable during the formative phase of thyroid gland, i.e. in small children.
  • However, when the first researcher in Ukraine was saying in 1991 "There are an increasing number of thyroid cancer", researchers in Japan and the US were publishing articles in Nature magazine saying "There is no causal relationship between the radiation and thyroid cancer." Why did they say that? Because there was no data prior to 1986, there was no statistical significance.
  • The statistical significance was finally noted 20 years later. Why? Because the peak that started in 1986 disappeared. So even without the data prior to 1986, the occurrence of thyroid cancer and radiation exposure from Chernobyl had the causal relationship. Epidemiological proof is very difficult. It is impossible to prove until all the cases are done.Therefore, from the viewpoint of "protecting our children" a completely different approach is required.
  • Dr. Shoji Fukushima from a national institution called Japan Bioassay Research Center, which researches health effects of chemical compounds, has been studying diseases involving urinary tract since the Chernobyl accident.
  • Dr. Fukushima and doctors in Ukraine studied parts of bladders removed during more than 500 cases of prostatic hypertrophy surgery. They found out that in the highly contaminated area where 6Bq/liter was detected in urine, there was a high frequency of mutation of p53 though 6Bq may sound minuscule.
  • They also noticed many cases of proliferative precancerous conditions, which we assume was due to the activation of p38 MAP kinase and the signal called "NF-kappa B," leading inevitably to proliferative cystitis, with carcinoma in situ occurring with considerable frequency.Knowing this, I was astounded to hear the report that 2 to 13Bq/liter [of radioactive cesium] was detected from the breast milk of seven mothers in Fukushima.(to be continued in Part 3.)
  • When radioactive materials were detected from the breast milk, what did the government and government researchers say? "No need to worry. No immediate effect on health of the babies."Professor Kodama is saying that by the time we have proof that there is a causal relationship between internal radiation exposure (however small) and cancer, it may be too late.Thorotrast is a suspension containing the radioactive particles of thorium dioxide.
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    Japanese Professor's testimony on July 27, here is an excerpt from pt 1: Professor Tatsuhiko Kodama is the head of the Radioisotope Center at the University of Tokyo. On July 27, he appeared as a witness to give testimony to the Committee on Welfare and Labor in Japan's Lower House in the Diet. Remember Professor Kosako, also from the University of Tokyo, who resigned in protest as special advisor to the prime minister over the 20 millisievert/year radiation limit for school children? There are more gutsy researchers at Todai (Tokyo University) - the supreme school for the "establishment" - than I thought. Professor Kodama literally shouted at the politicians in the committee, "What the hell are you doing?" He was of course referring to the pathetic response by the national government in dealing with the nuclear crisis, particularly when it comes to protecting children. Part two:
D'coda Dcoda

Japanese Researcher: 2,600 Bq/Kg of Cesium-137 from Rice Grown on Soil Taken from Iitat... - 0 views

  • Kazue Tazaki is a professor emeritus at Kanazawa University in Ishikawa Prefecture. She took the contaminated soil from Iitate-mura in Fukushima Prefecture where the villagers were required to evacuate, and grew rice using that soil.Rice planting and growing was banned in Iitate-mura this year.Professor Tazaki just harvested the rice, and measured the concentration of cesium-137. The result?From the rice grains: 2,600 becquerels/kgFrom the straw: 2,200 becquerels/kgFrom the roots: 1,500 becquerels/kgSoil contamination: 50,000 becquerels/kgRoughly an equal amount of cesium-134 is to be expected. The transfer rate of cesium-137 in this case was about 0.05.
  • From Toyama Shinbun, local paper in Ishikawa Prefecture (9/27/2011):
  • Kazue Tazaki, professor emeritus at Kanazawa University has compiled the result of her experiment of growing rice using the soil from Iitate-mura in Fukushima Prefecture where high radiation levels have been recorded. 2,600 becquerels/kg of radioactive cesium was detected from the harvested rice, more than 5 times the provisional safety limit (500 becquerels/kg) set by the national government. It was prohibited to plant rice in Iitate-mura because of the Fukushima I Nuclear Power Plant accident. The professor's data will be extremely valuable in studying the effect of radiation in the soil on the agricultural crops.
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  • Professor Tazaki collected the soil from the rice paddies in Nagadoro District of Iitate-mura, area with very high radiation, when she visited Fukushima Prefecture in late June. At her home in Kanazawa City, she planted the seedlings of "Koshihikari" which were germinated in Tawara-machi in Kanazawa City on the soil from Iitate-mura.
  • She harvested the rice in mid September, had it analyzed at a laboratory in Fukui Prefecture for cesium-137 in various parts of the rice and calculated the radiation levels per kilogram. The highest cesium-137 concentration of 2,600 becquerels/kg was found in (unprocessed) rice, 2,200 becquerels/kg from the straw, and 1,500 becquerels/kg from the roots. 50,000 becquerels/kg was detected from the soil itself.
  • To compare, "Koshihikari" rice planted in the rice paddies in Tawara-machi was also analyzed but no radioactive materials were detected at all.
  • Professor Tazaki says, "I myself was very shocked to find that the edible part of the rice had the most radiation. The decontamination of the soil should be carried out as soon as possible". She will teach farmers in Minami Soma City in Fukushima on a decontamination method using diatomite unique to Ishikawa Prefecture.Professor Tazaki found a bacterium that absorbs radioactive materials like uranium and thorium in Tanzania earlier this year, where she taught geology after she retired from Kanazawa University in 2009.Her result makes me very suspicious of the results announced by Fukushima Prefecture. Iitate-mura does have high soil contamination but it is by no means the highest. Judging by the rice hay contamination there are many other locations within Fukushima that may have radiation levels just as high and still grow rice because they lie outside the 30 kilometer radius from the plant. And yet the prefectural government says it's found 500 becquerels/kg of radioactive cesium at most from one location, and the rest is below 200 becquerels/kg.
  • It is also possible that the professor scraped the top soil only, whereas farmers in Fukushima tilled deeper and thus mixing the highly contaminated soil in the top 5 centimeters with the uncontaminated soil below, lowering the overall radiation.Well, despite the official ban with the threat of fines, the rice grew in Iitate-mura after all as at least one farmer spread the seed rice directly in the rice paddies. And as this Iitate-mura villager tweets, the rice has grown better than ever with far less work and resources. Why not test that too for radiation, instead of cutting it down?
D'coda Dcoda

Announcing India Nuclear Energy 2011 - The Road Ahead! [27Sep11] - 0 views

  • Economies around the world continue to grow, and the need for electricity, near-carbon-free, reliable, and low-cost energy is growing tremendously. In order to reap the benefits of nuclear energy, to effectively bridge the demand supply gap for India and to also necessitate the need to bring the industry at one platform, UBM India is pleased to bring the 3rd edition of ‘India Nuclear Energy 2011’ – International Exhibition and Conference. India Nuclear Energy 2011 will be held from 29th September – 1st October, 2011 at the Bombay Exhibition Centre, Goregaon (East), Mu
  • India Nuclear Energy 2011 is co-partnered by Department of Atomic Energy (DAE), the nodal Government body in the Indian Nuclear Energy sector and Supported by Indian Nuclear Society (INS). The topic of discussion at the press conference revolved around India’s use of nuclear energy to meet growing electricity demand and to endorse programs to expand the peaceful use of nuclear energy while minimizing the risks of proliferation. The Conference provides a platform for luminaries from the power sector and the government to share their views on India’s Nuclear Power future. Mr. S.K. Malhotra, Department of Atomic Energy (Government of India), Mr. M.V. Kotwal, Senior Executive Vice-President and Director, L&T, Mr. Eric P. Loewen, President, American Nuclear Society, and Mr. Sanjeev Khaira, MD, UBM India, addressed the media.
  • Mr. Sanjeev Khaira, MD–UBM India said: “India’s effort has been to achieve continuous improvement and innovation in nuclear safety.  The basic principle being, for all projects the Government gives priority to people’s safety as generation of power. This is important at a time when we are in the process of expanding nuclear capacity at an incredible pace.” In tandem with the Asian peers India is recording a high growth rate and the demand for energy is always on the upper curve. India is facing an acute shortage of fuel, like the coal and gas. Primarily, India has coal-fired (thermal) stations; however the shortage is forcing the power producers to resort to importing coal, which is more expensive. This in turn has caused prices of power to increase and the shortage has also resulted in certain regions facing power failures.
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  • Considering the capital involved in solar, wind and other power generation options, the viable option for the developing nations is nuclear energy which provides a feasible source of energy. The conference supports the establishment and implementation of national and international safety standards in the design, construction, operation, and decommissioning of nuclear facilities. The Conference enumerated various pro’s & con’s that could be brought about by Nuclear energy, for India, Nuclear power is foreseeable as there is no other viable option. Due to the lack of indigenous uranium, India has uniquely been developing and utilizing a nuclear fuel cycle to exploit its reserves of thorium. And now with foreign technology and funding, it is expected that India’s Nuclear Power programme will receive a considerable boost. Through the upcoming three day event from 29th September, 2011, the Indian Power & Energy Sector will be linked to global players providing efficient and innovative solutions to make India a world leader in nuclear technology in the future.
  • Dr. Srikumar Banerjee – Chairman, Atomic Energy Commision will deliver the Key Note Address at “India Nuclear Energy Summit 2011” on 29th September 2011. Mr. Pierre Lellouche, French Minister of State for Foreign Trade has confirmed to be Guest of Honor for India Nuclear Energy Summit 2011. “The event will see participation from leading companies like DAE, L&T, GMR, Areva, GE, Westinghouse, Alstom, HCC, JSL, REC, Power Grid Corporation of India, Nuvia India, Nuscale Power, Schiess, American Nuclear Society, UBI France, Rosatom, Infotech, Lisega, United to name a few. The event will highlight the participation from various countries like USA, France, Russia and individual companies from UK, Germany & Canada. The event will also host symposium of Indo-US Nuclear Energy safety summit on 30th September 2011 and Indo- French Seminar, organized by French Trade Commission on 1st October 2011. The event will also witness the presence of French Ambassador, Jean-Raphael PEYTREGNET-Consul General of France in Mumbai, US Ambassador, US Consul General in Mumbai. It will also open doors of opportunities for domestic & international companies to tap the unexploited market of the nuclear sector in India. The format of the event has been designed to offer an opportunity for best networking and business opportunities and provide an interactive platform for equipment, technology suppliers and end users.
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Nuclear electricity: a fallen dream? [28Sep11] - 0 views

  • Nuclear power is no magic solution, argues Pervez Hoodbhoy — it's not safe, or cheap, and it leads to weapons programmes. A string of energy-starved developing countries have looked at nuclear power as the magic solution. No oil, no gas, no coal needed – it's a fuel with zero air pollution or carbon dioxide emissions. High-tech and prestigious, it was seen as relatively safe. But then Fukushima came along. The disaster's global psychological impact exceeded Chernobyl's, and left a world that's now unsure if nuclear electricity is the answe
  • Core concerns The fire that followed the failure of emergency generators at the Daiichi nuclear complex raised the terrifying prospect of radiation leaking and spreading. The core of the Unit 1 reactor melted, and spent nuclear fuel, stored under pools of water, sprang to life as cooling pumps stopped. Fukushima's nuclear reactors had been built to withstand the worst, including earthquakes and tsunamis. Sensors successfully shut down the reactors, but when a wall of water 30 feet high crashed over the 20-foot protective concrete walls, electrical power, essential for cooling, was lost. The plume of radiation reached as far as Canada. Closer, it was far worse. Japan knows that swathes of its territory will be contaminated, perhaps uninhabitable, for the rest of the century. In July, for example, beef, vegetables, and ocean fish sold in supermarkets were found to have radioactive caesium in doses several times the safe level. [1]
  • The Japanese have been careful. In the country of the hibakusha (surviving victims of Hiroshima and Nagasaki), all reactors go through closer scrutiny than anywhere else. But this clearly wasn't enough. Other highly developed countries — Canada, Russia, UK, and US — have also seen serious reactor accidents. What does this mean for a typical developing country? There, radiation dangers and reactor safety have yet to enter public debate. Regulatory mechanisms are strictly controlled by the authorities, citing national security reasons. And individuals or nongovernmental organisations are forbidden from monitoring radiation levels near any nuclear facility. Poor and powerless village communities in India and Pakistan, that have suffered health effects from uranium and thorium mining, have been forced to withdraw their court cases.
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  • Is nuclear energy cost efficient? A 2009 Massachusetts Institute of Technology study, which strongly recommended enhancing the role of nuclear power to offset climate change [2], found that nuclear electricity costs more per kilowatt-hour (kWh): 8.4 cents versus 6.2/6.5 cents for coal/gas. It suggested that as fossil fuel depletes, the nuclear-fossil price ratio will turn around. But it hasn't yet. The World Bank has labelled nuclear plants "large white elephants". [3] Its Environmental Assessment Source Book says: "Nuclear plants are thus uneconomic because at present and projected costs they are unlikely to be the least-cost alternative.
  • The aftermath of a Fukushima-type incident might look very different in many developing countries. With volatile populations and little disaster management capability, the social response would probably be quite different. In Japan, tsunami survivors helped each other, relief teams operated unobstructed, and rescuers had full radiation protection gear. No panic, and no anti-government demonstrations followed the reactor explosions. Questions about cost
  • There is also evidence that the cost figures usually cited by suppliers are substantially underestimated and often fail to take adequately into account waste disposal, decommissioning, and other environmental costs." [4] According to the US Nuclear Regulatory Commission, the cost of permanently shutting down a reactor ranges from US$300 million to US$400 million. [5] This is a hefty fraction of the reactor's original cost (20–30 per cent). While countries like France or South Korea do find nuclear energy profitable, they may be exceptions to a general rule. Countries that lack engineering capacity to make their own reactors will pay more to import and operate the technology.
  • Poor track record, military ambitions The track record of nuclear power in developing countries scarcely inspires confidence. Take the case of Pakistan, which still experiences long, daily electricity blackouts. Forty years ago, the Pakistan Atomic Energy Commission had promised that the country's entire electricity demand would be met from nuclear reactors. Although the commission helped produce 100 nuclear bombs, and employs over 30,000 people, it has come nowhere close to meeting the electricity target. Two reactors combine to produce about 0.7 GW, which meets around 2 per cent of Pakistan's electricity consumption.
  • India's record is also less than stellar. In 1962, it announced that installed nuclear capacity would be 18–20 GW by 1987; but it could reach only 1.48 GW by that year. Today, only 2.7 per cent of India's electricity comes from nuclear fuels. In 1994, an accident during the construction of two reactors at the Kaiga Generating Station pushed up their cost to four times the initial estimate. Cost overruns and delays are frequent, not just in India. And some developing countries' interest in nuclear technology for energy could mask another purpose. India and Pakistan built their weapon-making capacity around their civilian nuclear infrastructure. They were not the first, and will not be the last.
  • Warning bells ring loud and clear when big oil-producing countries start looking to build nuclear plants. Iran, with the second largest petroleum reserves in the world, now stands at the threshold of making a bomb using low enriched uranium fuel prepared for its reactors. Saudi Arabia, a rival which will seek its bomb if Iran makes one, has plans to spend over US$300 billion to build 16 nuclear reactors over the next 20 years. Climate change gives urgency to finding non-fossil fuel energy alternatives. But making a convincing case for nuclear power is getting harder. Neither cheap nor safe, it faces an uphill battle. Unless there is a radical technical breakthrough — such as a workable reactor fuelled by nuclear fusion rather than nuclear fission — its prospects for growth look bleak. Pervez Hoodbhoy received his PhD in nuclear physics from the Massachusetts Institute of Technology, USA. He teaches at the School of Science and Engineering at LUMS (Lahore) and at Quaid-e-Azam University, Islamabad, Pakistan.
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Loewen leads U.S. nuclear energy mission to India [29Sep11] - 0 views

  • A high-powered nuclear energy delegation from the United States, led by American Nuclear Society President Eric Loewen, is visiting India this week to participate in the Indo–U.S. Nuclear Energy Safety Summit being held here on September 30.
  • Explaining the objective ahead of his first ever visit to India, Loewen said, “Twenty of my ANS colleagues, who come from academia, the government, and industry will join me in seeing first-hand how India develops nuclear energy to provide safe, clean, and affordable electricity to a growing population and economy.”
  • Loewen added, “Of course, as a nuclear engineer, I am particularly eager to visit some of India’s leading nuclear sites.” Loewen’s delegation will tour the Indira Gandhi Atomic Research Centre and the Bhabha Atomic Research Centre (BARC) government sites, and will meet with government and industry officials in both Chennai and Mumbai. ANS last led a mission to India in 2007.
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  • Loewen will present an ANS Presidential Citation to Anil Kakodkar, former chairman of India’s Atomic Energy Commission and secretary of the Department of Atomic Energy, for his critical leadership role in successfully negotiating the Indo–U.S. civil nuclear agreement. Loewen will also present opening remarks at the Indo–U.S. Summit and will discuss the safety advantages of fast breeder reactors, a technology that he manages at General Electric, and that is part of India’s three-stage plan for civil nuclear energy.
  • Presenting along with Loewen will be R.K. Sinha, director of the BARC, on the safety advantages of the advanced heavy water reactor being developed by India to take advantage of vast thorium reserves. U.S. representatives of four lightwater reactor suppliers will also make presentations: Westinghouse on the AP-1000 pressurized light-water reactor GE-Hitachi on the ESBWR boiling water reactor NuScale Power on the lightwater pressurized small modular reactor Areva USA on the EPR pressurized light-water reactor
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India's nuclear future put on hold [06Oct11] - 1 views

  • An increase in anti-nuclear sentiment after the Fukushima disaster in Japan in March has stalled India's ambitious plan for nuclear expansion. The plan, pushed forward by Prime Minister Manmohan Singh, aims to use reactors imported from the United States, France and Russia to increase the country's nuclear-power capacity from the present 4,780 megawatts to 60,000 megawatts by 2035, and to provide one-quarter of the country's energy by 2050. But now there are doubts that the targets will ever be met if safety fears persist.
  • Officials say that safety precautions are sufficient to make the proposed reactors, some of which are to be sited along the coasts, immune to natural disasters. But protesters are not listening. In April, violent protests halted construction in Jaitapur in the western state of Maharashtra, where Parisian company Areva is expected to build six 1,650-megawatt European Pressurized Reactors. In August, West Bengal state refused permission for a proposed 6,000-megawatt 'nuclear park' near the town of Haripur, which was slated to host six Russian reactors. The state government said that the area is densely populated, and the hot water discharged from the plants would affect local fishing.
  • On 19 September, following hunger strikes by activists from the People's Movement Against Nuclear Technology, the chief minister of Tamil Nadu state asked Prime Minister Singh to halt work at Koodankulam, about 650 kilometres south of Chennai, where Russia's Atomstroyexport is building two reactors and plans to build four more.
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  • The opposition has focused mainly on imported reactors, the designs of which are untried. "The French reactor offered to India is not working anywhere in the world and the Russian reactor had to undergo several design changes before we accepted it," says Annaswamy Prasad, retired director of the Bhabha Atomic Research Centre in Mumbai. "If any accident happens in India it will be in imported reactor and not in our home-made pressurized heavy water reactors" (PHWRs), he adds.
  • Ideally, says Prasad, India should boost its nuclear capacity by building more PHWRs fuelled by natural uranium, instead of importing reactors that require enriched uranium. Although the foreign vendors have agreed to supply fuel for the lifetime of their reactors, overreliance on imports will derail India's home-grown programme, the Bhabha scheme, he warns.
  • The Bhabha scheme involves building PHWRs, which would produce enough plutonium as a by-product to fuel fast-breeder reactors that would in turn convert thorium — which is abundantly available in India — into fissile uranium-233. In the third and final phase, India hopes to run its reactors using the 233U–Th cycle without any need for new uranium. Gopalakrishnan says that building indigenous reactors is not enough: the country must also invest in renewable energy sources, such as wind and solar power. But a survey by Subhas Sukhatme, a former chairman of the Atomic Energy Regulatory Board, warns that India's renewable energy sources, even stretched to their full potential, can at best supply 36.1% of the country's total energy needs by the year 2070. The balance would have to come from fossil fuels and nuclear energy. 
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