Bill Gates has another go at getting taxpayer funding, for another nuclear venture (ships this time)
Bill Gates joins nuclear-powered shipping push, Splash Sam ChambersNovember 2, 2020 Bill Gates, one of the richest men in the world, has turned his attention to getting ships powered by nuclear energy.
The Microsoft co-founder, who turned 65 last week, is also chairman of TerraPower, a nuclear tech company that today announced a new venture with Mikal Bøe’s CORE POWER, French nuclear materials handling specialist Orano and American utilities firm Southern Company. The four companies plan to develop molten salt reactor (MSR) atomic technology in the United States………
The four companies have submitted an application to the US Department of Energy to take part in cost-share risk reduction awards under the Advanced Reactor Demonstration Programme to build a prototype MSR, as a proof-of-concept for a medium-scale commercial-grade reactor.
……. we seek to build scale-appropriate technology and broad acceptance of modern and durable liquid-fuelled atomic power to shape the future of how we deal with climate change,” Bøe commented today…….
Thorium is a weakly radioactive metallic chemical element found most commonly in India and is a substance that Gates’ TerraPower has been studying closely of late.
Admitting the technology would not be cheap to install on ships, Bøe has proposed a leasing model for his batteries, similar to those deployed for aircraft engines………. https://splash247.com/bill-gates-joins-nuclear-powered-shipping-push/
Thorium not likely to revive the nuclear energy industry
Could Thorium Revive The Nuclear Energy Industry? Oil Price, – Sep 27, 2020,………..It still remains to be seen whether the new thorium fuel will actually see the light of day.
The main sticking point to the promotion of thorium as a cleaner nuclear fuel is that it remains unproven on a commercial scale. Thorium MSRs (Molten Salt Reactors) have been in development since the 1960s by the United States, China, Russia, and France, yet nothing much ever came of them.
Nuclear radiologist Peter Karamoskos, of the International Campaign to Abolish Nuclear Weapons (ICAN) has advised the world not to hold its breath:
“Without exception, [thorium reactors] have never been commercially viable, nor do any of the intended new designs even remotely seem to be viable. Like all nuclear power production they rely on extensive taxpayer subsidies; the only difference is that with thorium and other breeder reactors these are of an order of magnitude greater, which is why no government has ever continued their funding.”
Nuclear power enthusiasts can only hope that ANEEL will not also fall victim to the thorium curse.
Houthis are actively enriching Thorium extracted from Yemeni mountains and sending it to Iran for arms manufacture.
The Yemen Coalition of Independent Women held a virtual seminar titled “Iranian intervention: A History of Disorder in The Arab Countries,” which tackled a variety of issues, including the Iran-backed Houthi militias’ smuggling of Thorium from Yemen to Iran.
Hodeidah Undersecretary Walid al-Qudaimi warned of the impending danger facing Yemen over the ongoing smuggling of the material.
Houthis are actively enriching Thorium extracted from Yemeni mountains and sending it to Iran for arms manufacture.
Qudaimi said that a blast worse than the one that took place at Beirut port on August 4, due to the explosion of highly-flammable ammonium nitrate, was in store for Yemen if the smuggling does not stop.
He said that Iranian proxies in the region like the Lebanon-based Hezbollah, Houthis and the Iraq-based Popular Mobilization Forces have resorted to using certain vulnerable countries to manufacture and store explosives, chemicals and missiles. …
“When we talk about Yemen, the catastrophe is very big and worse than we might expect,” he said, adding that Houthis control the ports of Hodeidah and use them to smuggle weapons and explosive materials of all kinds.
Most of these weapons and explosives are sent by Iran to help Houthi militias control Yemen and threaten neighboring Gulf states, especially Saudi Arabia. They also use them to endanger maritime navigation in the Red Sea.
Qudaimi also tackled the FSO Safer oil tanker issue. Houthis have been obstructing efforts to perform maintenance work on board the derelict ship.
According to international reports, in the event of a leak or explosion in the floating reservoir, 1.1 million liters of crude oil will spill into the Red Sea.
This will cause serious damage to marine life, biodiversity and fish resources that cannot be compensated, in addition to the suspension of ports and international shipping lines in the region. https://english.aawsat.com/home/article/2450796/yemen-official-warns-blast-worse-beirut%E2%80%99s-over-houthi-smuggling-thorium-iran
Thorium nuclear plan with USA firm – a dubious deal for Indonesia
 Thorcon, Defense Ministry to cooperate on thorium nuclear reactor, Norman Harsono, The Jakarta PostJakarta / Tue, July 28, 2020 United States-based nuclear company Thorcon International Pte Ltd and Indonesia’s Defense Ministry signed a deal on Jul. 22 to study developing a thorium molten salt reactor (TMSR) for either power generation or marine vehicle propulsion.Thorcon said it would provide technical support to the ministry’s research and development (R&D) body to develop “a small-scale TMSR reactor under 50 megawatts (MW)”, the company wrote in a statement on Friday, Jul. 24,
“[This will] strengthen national security in the outermost, frontier and least developed regions,” reads the company’s statement……… “We hope Thorcon may be more open toward providing technical support for the Defense Ministry’s R&D body in making the designs and technical preparations for when we enter the construction phase,” the ministry’s statement reads. At 50 MW, the Defense Ministry’s “small-scale” reactor would become the biggest nuclear reactor in Indonesia. The country’s current largest reactor – a non-commercial facility – is the 30 MW GA Siwabessy reactor in Serpong, Banten. …… Thorium nuclear technology is also unready for commercial application, National Nuclear Energy Agency (Batan) director Dandang Purwadi told The Jakarta Post earlier this year. “We have to wait around 10 years for the technology to mature, then it takes 10 years to build the facility”, he said, commenting on Thorcon’s planned commercial plant. Energy experts speaking at a discussion on Jul. 1 pointed out that nuclear plants were losing popularity and were much more costly than renewables, despite improvements in nuclear plant safety, following headline grabbing meltdowns. … “Usage of nuclear power plants is entering a sunset phase,” said Herman Ibrahim, country chairman of the Paris-based International Council on Large Electric Systems (CIGRE). https://www.thejakartapost.com/news/2020/07/28/thorcon-defense-ministry-to-cooperate-on-thorium-nuclear-reactor.html |
|
Canada on verge of investing in plutonium
Gordon Edwards <ccnr@web.ca>\, 26 Apr 2020, It seems that the two SMNR (Small Modular 
Nuclear Reactor) entrepreneurs in New Brunswick (Canada), along with other nuclear “players” worldwide, are trying to revitalize the “plutonium economy” — a nuclear industry dream from the distant past that many believed had been laid to rest because of the failure of plutonium-based breeder reactors almost everywhere – e.g. USA, France, Britain, Japan …
Debunking James Hansen’s claims in favour of nuclear power
John Wayne squares off against Jim Hansen, Medium, Albert Bates, 11 Jan 2020 “……. I greatly admire James Hansen ……. What annoys me, however, about Hansen, then and now, is his insistence, in utter disregard of best science, that nuclear energy can somehow save humanity from climate change because it is clean, safe, too cheap to meter and besides all that, is carbon-free. I watched with pity more than scorn when he took his time to repeat this nonsense at the recent UN climate conference in Madrid. He mounted fallacy upon fallacy in a pyramid of lies that had been heard since the 1940s coming from the Atomic Energy Commission, Nuclear Regulatory Commission, International Atomic Energy Agency and others in thrall to the atomic devil.“. . . the genetic effect has no threshold and exposure is not only cumulative in the individual, but in succeeding generations. On this basis, there would be no tolerance dose, but rather an acceptable injury-limit.”[Parker, H.M., Instrument ation and Radiation Protection (March, 1947), Health Physics, 38:957,970, June 1980]
and:
“Even sub-tolerance radiations produce certain biological changes (cosmic rays are supposed to have some biological effects), so tolerance radiation is not what one strives to get but the maximum permissible dose.”[Morgan, K.Z., The Responsibilities of Health Physics, The Scientific Monthly, 93 (August 1946); reprinted in Health Physics 38:949–952, June 1980.]
The question of what percentage of the population can be acceptably damaged came first to the attention of the AEC at a meeting of the Advisory Committee on Biology and Medicine on January 16–19,1957. At this meeting the AEC advisors determined that a 20 percent increase in the rate of bone cancers and birth defects nationwide would be an “acceptable” effect of U.S. nuclear weapons testing activities. These scientists also acknowledged at this time that the long-term genetic effects were totally unknown.
The historical record indicates that prominent radiologists, health physicists, and geneticists of the time recognized even at the outset of America’s atomic power program that any large population exposure to even very minute amounts of ionizing radiation could create lingering public health problems and genetic damage, and these scientists went to some lengths, including sacrificing their own illustrious careers, to express their views publicly. [ long list of references given here]
[ discusses Fukushima]
….. atmospheric physicists should not opine on health physics. There is no dose of radiation below which there is not a negative biological effect. Indeed, there is a “superlinear” ratio of dose to effect at low doses, because doses that do not kill a cell cause genetic damage that is a larger health threat than dead cells, so humans and animals exposed to low doses are at greater health risk than those exposed to higher doses.
While there are hundreds of different radioactive isotopes within a nuclear reactor, the isotope Cesium-137 is easily measured and has become a standard by which to calculate impacts. During the two-day accident, 18 quadrillion becquerels of cesium were released into the Pacific (18 with 15 zeros). A typical abdominal or pelvic CT scan (the most often performed) is 14–18 thousandths of a becquerel, so during the accident the cesium dose to the environment was the same as about 1 quintillion (1 with 18 zeros) CT scans (repeated every second, continuously, for the next 300 to 600 years). Depending on the type of scan and the age and sex of the patient, a single CT scan will produce 1 cancer for 150 to 3300 exposures, or a median risk of 10 cancers per becquerel (or seivert). [table here on original]
By that calculation, the cesium released during the Fukushima accident was capable of causing roughly 10 quadrillion cancers, but with one important difference.
When you receive radiation treatment like a CT-scan it is sudden and one-off. One second. The technician presses the button and it is on and then off. There is no danger from the machine when it is off. When radioactive elements like cesium-137 (and remember that is just one of hundreds of elements in a nuclear reactor) are released to the environment, there is no off-switch. Thus, the cesium released during the Fukushima accident is capable of roughly 10 quadrillion cancers per second. Inhaling or ingesting it can kill a person, a dolphin or a seagull, but then as the individual’s body decomposes after death — as bacteria, worms and fungi eat away the flesh and bone — the isotope goes back into the food chain to strike another individual, and another, and so on. The danger is limited only by the isotope’s half-life — the time it takes to decay to a harmless element, which for cesium-137 is 30.17 years. Scientists generally use 10 or 20 half-lives to bracket safety concerns, so for cesium 137, “safe” levels arrive in 302 to 604 years (around year 2322 to year 2624), admittedly an imperfect measurement since any residue, no matter how microscopic, may still be lethal, as we have known since before the Manhattan Project. Cesium is one of 256 radionuclides released during Fukushima, so we would need to calculate quantities, biological effectiveness, and the decay time of each of those to get the full health picture. Other isotopes in the Fukushima fuel include Uranium-235, with a half-life of 704 million years, and Uranium-238, with a half-life of 4.47 billion years, or longer than the age of the Earth.
At Fukushima, the end of the accident was not the end of the story. In 2013, 30 billion becquerels of cesium-137 were still flowing into the ocean every day from the damaged and leaking reactor cores. That is 300 billion cancer doses per second of man-made cesium added every day, or 109.5 trillion cancer doses per second added every year. To stop this assault on ocean life, and our own, over the next 5 years the owner of the plant constructed more than 1000 tanks to hold contaminated water away from the ocean. In September 2019, the Japanese government announced that more than one million tons were in storage but that space would run out by the summer of 2022 so it planned to begin releasing those billions of bequerels to the ocean again.Swimmers and sailors who plan to compete in open water events at the 2020 Tokyo Olympics might want to think about that, as might any who fish those waters or consume the catch.
What happens to ocean creatures who ingest radionuclides from leaking nuclear power plants is not very different from what happened to John Wayne, his sons and his co-stars. As the isotopes decay within the body of a dolphin or a coral polyp they send microscopic bullets hurling through DNA chains, causing tumors, sicknesses, defective offspring and death for untold generations. The chance that a single mutation will produce a beneficial result are less than one in a million. Radioactivity is, for practical purposes, forever, as we can see just by looking up at our Sun, a benevolent nuclear reactor providing us energy from the relatively safe distance of 93 million miles.
Even that radiation will kill a number of us, but far fewer than would die if, by some devilish plan or panic response, we follow Dr. Hansen’s advice. https://medium.com/@albertbates/john-wayne-squares-off-against-jim-hansen-42a258b2260d
Thorium and uranium pollution from Rio Tinto’s Madagascar mine
Concerns about radioactive contamination dog Rio Tinto’s Madagascar mine, MONGABAY, by Malavika Vyawahare on 31 December 2019
|
|
|
||||
Kyrgyzstan bans uranium, thorium mining
Above – radioactive tailings mountain in Central Asia
|
Kyrgyzstan bans uranium, thorium mining http://www.xinhuanet.com/english/2019-12/16/c_138635832.htm 2019-12-16 BISHKEK, Dec. 16 (Xinhua) –– President of Kyrgyzstan Sooronbai Jeenbekov signed a decree banning the mining of uranium and thorium deposits in the Central Asian country, his press service reported on Monday.The law, aimed at ensuring radiation and environmental safety, prohibits geological exploration and development of uranium and thorium deposits in Kyrgyzstan, as well as dumping and transfer of the material, the report said.
Meanwhile, the import of raw materials and waste containing the two radioactive substances is not allowed by law, it said. Earlier this year, protests arose against the development of uranium deposits after reports that exploration work had begun in the Kyzyl-Ompol area in the Issyk-Kul region. |
|
Busting the false claims of the thorium nuclear lobby
Fact-check: Five claims about thorium made by Andrew Yang, Bulletin of the Atomic Scientists , By John Krzyzaniak, Nicholas R. Brown, December 18, 2019 Andrew Yang, like many of the 2020 Democratic presidential hopefuls, has an ambitious plan to wean America off of fossil fuels. Unlike many of the other candidates, however, a key piece of his plan to address climate change involves harnessing nuclear power—in particular thorium. According to Yang, thorium is “superior to uranium on many levels.” But Yang isn’t alone; thorium boosters have been extolling its supposed virtues for years.
Do the claims about thorium actually hold up? The Bulletin reached out to Nicholas R. Brown, an associate professor in the department of Nuclear Engineering at the University of Tennessee, to examine five common claims about thorium and next-generation nuclear reactors. Brown’s responses are below.
…….. the public has good reason to be skeptical that thorium can or should play any role in the future.
Claim: Thorium reactors would be more economical than traditional uranium reactors, particularly because thorium is more abundant than uranium, has more energy potential than uranium, and doesn’t have to be enriched.
False. Although thorium is more abundant than uranium, the cost of uranium is a small fraction of the overall cost of nuclear energy. Nuclear energy economics are driven by the capital cost of the plant, and building a power plant with a thorium reactor is no cheaper than building a power plant with a uranium reactor. Further, using thorium in existing reactors is technically possible, but it would not provide any clear commercial benefit and would require other new infrastructure.
Additionally, there is technically no such thing as a thorium reactor. Thorium has no isotopes that readily fission to produce energy. So thorium is not usable as a fuel directly, but is instead a fertile nucleus that can be converted to uranium in a reactor. Only after conversion to uranium does thorium become useful as a nuclear fuel. So, even for a reactor that would use thorium within its fuel cycle, most energy produced would actually come from uranium fissions.
Claim: Next generation thorium reactors would be safer than current reactors.
True but misleading.……. the benefits are a function of the inherent safety in the next-generation designs, not the utilization of thorium.
Claim: The waste from thorium reactors would be easier to deal with than waste from today’s uranium reactors.
False. A comprehensive study from the US Energy Department in 2014 found that waste from thorium-uranium fuel cycles has similar radioactivity at 100 years to uranium-plutonium fuel cycles, and actually has higher waste radioactivity at 100,000 years.
Claim: Thorium would be more proliferation-resistant than current reactors—you can’t make nuclear weapons out of it.
False. A 2012 study funded by the National Nuclear Security Administration found that the byproducts of a thorium fuel cycle, in particular uranium 233, can potentially be attractive material for making nuclear weapons. A 2012 study published in Nature from the University of Cambridge also concluded that thorium fuel cycles pose significant proliferation risks…
https://thebulletin.org/2019/12/fact-check-five-claims-about-thorium-made-by-andrew-yang/
New report on Iraqi babies, deformed due to thorium and uranium from U.S. military actions and bases
IRAQI CHILDREN BORN NEAR U.S. MILITARY BASE SHOW ELEVATED RATES OF “SERIOUS CONGENITAL DEFORMITIES,” STUDY FINDS https://theintercept.com/2019/11/25/iraq-children-birth-defects-military/ Murtaza Hussain, November 26 2019, MORE THAN A decade and a half after the 2003 U.S. invasion of Iraq, a new study found that babies are being born today with gruesome birth defects connected to the ongoing American military presence there. The report, issued by a team of independent medical researchers and published in the journal Environmental Pollution, examined congenital anomalies recorded in Iraqi babies born near Tallil Air Base, a base operated by the U.S.-led foreign military coalition. According to the study, babies showing severe birth defects — including neurological problems, congenital heart disease, and paralyzed or missing limbs — also had corresponding elevated levels of a radioactive compound known as thorium in their bodies.
The suffering of Iraqis has been particularly acute. The results of the new study added to a laundry list of negative impacts of the U.S.’s long war there to the long-term health of the country’s population. Previous studies, including some contributed by a team led by Savabieasfahani, have pointed to elevated rates of cancer, miscarriages, and radiological poisoning in places like Fallujah, where the U.S. military carried out major assaults during its occupation of the country.
SOME OF THESE negative health effects of the American war in Iraq can be put down to U.S. forces’ frequent use of munitions containing depleted uranium. Depleted uranium, a byproduct of the enriched uranium used to power nuclear reactors, makes bullets and shells more effective in destroying armored vehicles, owing to its extreme density. But it has been acknowledged to be hazardous to the environment and the long-term health of people living in places where the munitions are used.
“Uranium and thorium were the main focus of this study,” the authors note. “Epidemiological evidence is consistent with an increased risk of congenital anomalies in the offspring of persons exposed to uranium and its depleted forms.” In other words: The researchers found that the more you were around these American weapons, the more likely you were to bear children with deformities and other health problems.
In response to an outcry over its effects, the U.S. military pledged to not use depleted uranium rounds in its bombing campaigns against the Islamic State group in Iraq and Syria, but, despite this pledge, a 2017 investigation by the independent research group AirWars and Foreign Policy magazine found that the military had continued to regularly use rounds containing the toxic compound.
These depleted-uranium munitions are among the causes of hazards not only to the civilians in the foreign lands where the U.S. fights its wars, but also to American service members who took part in these conflicts. The chronic illnesses suffered by U.S. soldiers during the 1991 war in Iraq — often from exposure to uranium munitions and other toxic chemicals — have already been categorized as a condition known as “Gulf War syndrome.” The U.S. government has been less interested into the effects of the American military’s chemical footprint on Iraqis. The use of “burn pits” — toxic open-air fires used to dispose military waste — along with other contaminants has had a lasting impact on the health of current and future Iraqi generations.
Researchers conducting the latest study said that a broader study is needed to get definitive results about these health impacts. The images of babies born with defects at the hospital where the study was conducted, Bint Al-Huda Maternity Hospital, about 10 kilometers from Tallil Air Base, are gruesome and harrowing. Savabieasfahani, the lead researcher, said that without an effort by the U.S. military to clean up its radioactive footprint, babies will continue to be born with deformities that her study and others have documented.
“The radioactive footprint of the military could be cleaned up if we had officials who wanted to do so,” said Savabieasfahani. “Unfortunately, even research into the problem of Iraqi birth defects has to be done by independent toxicologists, because the U.S. military and other institutions are not even interested in this issue.”
No, thorium nuclear power is still not a viable energy technology
There’s little reason to consider thorium, molten salt reactors and Gates’ “traveling wave” TerraPower technology when considering the future of energy. We have solutions today. They may be boring and low-tech, but they are cheap, fast to build, reliable, predictable, and have incredibly low negative externalities.
CleanTechnica‘s policy will be to continue to ignore them in favor of the actually transformative technologies reshaping our world for the better.
Why Thorium Nuclear Isn’t Featured on CleanTechnica Redux, https://cleantechnica.com/2019/10/30/why-thorium-nuclear-isnt-featured-on-cleantechnica-redux/?utm_source=dlvr.it&utm_medium=twitter 30 Oct 19, Seven years ago, CleanTechnica published its policy position to not cover thorium nuclear reactors. Today, the United States has a Democratic presidential candidate in the top 10 who loves thorium, yet CleanTechnica still ignores it. Why is that? Continue reading
Uranium industry in permanent collapse? And thorium industry probably no better
Uranium Sector Won’t Catch A Break, Share Cafe, By Rick Mills September 23, 2019 One week ago Cameco announced it will maintain low output levels until uranium prices recover. The Canadian uranium miner also said it might cut production further, having already closed four mines in Canada and laid off 2,000 of its workers in the uranium mining hub of Saskatchewan.No end to supply glut“We are not restarting mines until we see a better market and we may close more capacity, although no decision has been taken yet,” Cameco CEO Tim Gitzel told Reuters recently at the World Nuclear Association’s annual conference.
Just over a year ago Cameco made the difficult decision to close its MacArthur River and Key Lake mines, in response to low uranium prices, leaving the company’s flagship Cigar Lake facility as its only operating mine left in northern Saskatchewan, home to the world’s highest grade uranium deposit.
The mine closures by Cameco were preceded by 20% production cuts in Kazakhstan, the number one uranium-producing country. The former Soviet bloc country has said 2020-21 output will not rise above 2019 levels. In Canada, the second largest U producer, 2018 production was cut in half to 7,000 tonnes.
An estimated 35% of uranium supply has been stripped from the market since Kazakhstan’s supply reductions in December 2017…..
Eight years later, only nine of 33 remaining reactors have been re-started, and Japan’s nuclear operators are reportedly starting to sell their uranium fuel, as the chances fade of more reactors coming online, and adding to the six currently operating. Long-term contracts are also being canceled.
In another blow to the industry, Japan’s new environment minister, Shinjiro Koizumi, has said he wants all reactors shuttered to avoid a repeat of the Fukushima catastrophe that leaked radiation and forced 160,000 people to flee the area, many of whom have not returned.
As reactors close in the United States, Germany, Belgium and other countries, “traders and specialists say the market is likely to remain depressed for years,” Reuters reported in August.
Germany has pledged to shut down all its reactors by 2022 and the Belgian government has agreed to a new energy pact that will see nuclear power phased out over the next seven years…….
(makes case for thorium)….As far as disadvantages, thorium takes extremely high temperatures to 
produce nuclear fuel (550 degrees higher than uranium dioxide), meaning thorium dioxide is expensive to make. Second, irradiated thorium is dangerously radioactive in the short-term.
Detractors also say the thorium fuel cycle is less advanced than uranium-plutonium and could take decades to perfect; by that time, renewable energies could make the cost of thorium reactors cost-prohibitive. The International Nuclear Agency predicts that the thorium cycle won’t be commercially viable while uranium is still readily available………… https://www.sharecafe.com.au/2019/09/23/uranium-sector-wont-catch-a-break/
Iraqui children contaminated by thorium – birth defects
“The destruction of a society”: First the U.S. invaded Iraq — then we left it poisoned Scientist: Bombs, bullets and military hardware abandoned by U.S. forces have left Iraq “toxic for millennia”, Salon.com DAVID MASCIOTRA 7 Sept 19 “………In your groundbreaking new research, you discover that the teeth of Iraqi children have 28 times more thorium if they live near a U.S. military base. What is the significance of that conclusion, and what does the presence of thorium indicate about a child’s health? What kinds of abnormalities and health problems will they experience?
The Iraqi population is potentially contaminated with depleted uranium decay products. Baby teeth are highly sensitive to environmental exposures. Such high levels of thorium simply suggest high exposure at an early age and potentially in utero.
We found uranium and thorium in these children’s teeth and hair. Uranium and thorium were also in the bone marrow of children, all of whom had severe birth defects. The magnitude of public contamination caused by these alpha-emitting radioactive compounds is a serious question to be answered. Our bone marrow data is still unpublished, but we hope to publish it separately.
Thorium is an alpha emitter and, once in the body, it can cause cancer and other anomalies. Impacts can vary depending on the timing and amount of exposure. Childhood leukemia, which has been rising in southern Iraq, is a verified outcome of thorium exposure.
In our study, children with high levels of thorium had multiple birth defects. Our studies show that, across Iraq, children exposed to U.S. war contamination suffer primarily from congenital heart defects and neural tube defects……. https://www.salon.com/2019/09/07/the-destruction-of-a-society-first-the-u-s-invaded-iraq-then-we-left-it-poisoned/
Thorium nuclear reactors – expensive, dangerous and leave dangerous radioactive isotopes with long half-lives
New nuclear power proposal needs public debate https://independentaustralia.net/environment/environment-display/new-nuclear-power-proposal-needs-public-discussion,13071 By Helen Caldicott | 4 September 2019 The prospect of thorium being introduced into Australia’s energy arrangements should be subjected to significant scrutiny, writes Helen Caldicott.
AS AUSTRALIA is grappling with the notion of introducing nuclear powerinto the country, it seems imperative the general public understand the intricacies of these technologies so they can make informed decisions. Thorium reactors are amongst those being suggested at this time.
The U.S. tried for 50 years to create thorium reactors, without success. Four commercial thorium reactors were constructed, all of which failed. And because of the complexity of problems listed below, thorium reactors are far more expensive than uranium fueled reactors.
The longstanding effort to produce these reactors cost the U.S. taxpayers billions of dollars, while billions more dollars are still required to dispose of the highly toxic waste emanating from these failed trials.
The truth is, thorium is not a naturally fissionable material. It is therefore necessary to mix thorium with either enriched uranium 235 (up to 20% enrichment) or with plutonium – both of which are innately fissionable – to get the process going.
While uranium enrichment is very expensive, the reprocessing of spent nuclear fuel from uranium powered reactors is enormously expensive and very dangerous to the workers who are exposed to toxic radioactive isotopes during the process. Reprocessing spent fuel requires chopping up radioactive fuel rods by remote control, dissolving them in concentrated nitric acid from which plutonium is precipitated out by complex chemical means.
Vast quantities of highly acidic, highly radioactive liquid waste then remain to be disposed of. (Only is 6 kilograms of plutonium 239 can fuel a nuclear weapon, while each reactor makes 250 kilos of plutonium per year. One millionth of a gram of plutonium if inhaled is carcinogenic.)
So there is an extraordinarily complex, dangerous and expensive preliminary process to kick-start a fission process in a thorium reactor.
When non-fissionable thorium is mixed with either fissionable plutonium or uranium 235, it captures a neutron and converts to uranium 233, which itself is fissionable. Naturally it takes some time for enough uranium 233 to accumulate to make this particular fission process spontaneously ongoing.
Later, the radioactive fuel would be removed from the reactor and reprocessed to separate out the uranium 233 from the contaminating fission products, and the uranium 233 then will then be mixed with more thorium to be placed in another thorium reactor.
But uranium 233 is also very efficient fuel for nuclear weapons. It takes about the same amount of uranium 233 as plutonium 239 – six kilos – to fuel a nuclear weapon. The U.S. Department of Energy (DOE) has already, to its disgrace, ‘lost track’ of 96 kilograms of uranium 233.
A total of two tons of uranium 233 were manufactured in the United States. This material naturally requires similar stringent security measures used for plutonium storage for obvious reasons. It is estimated that it will take over one million dollars per kilogram to dispose of the seriously deadly material.
An Energy Department safety investigation recently found a national repository for uranium 233 in a building constructed in 1943 at the Oak Ridge National Laboratory.
It was in poor condition. Investigators reported an environmental release from many of the 1,100 containers could
‘… be expected to occur within the next five years because some of the packages are approaching 30 years of age and have not been regularly inspected.’
The DOE determined that this building had:
Deteriorated beyond cost-effective repair and significant annual costs would be incurred to satisfy both current DOE storage standards, and to provide continued protection against potential nuclear criticality accidents or theft of the material.
The DOE Office of Environmental Management now considers the disposal of this uranium 233 to be ‘an unfunded mandate’.
Thorium reactors also produce uranium 232, which decays to an extremely potent high-energy gamma emitter that can penetrate through one metre of concrete, making the handling of this spent nuclear fuel extraordinarily dangerous.
Although thorium advocates say that thorium reactors produce little radioactive waste, they simply produce a different spectrum of waste to those from uranium-235. This still includes many dangerous alpha and beta emitters, and isotopes with extremely long half-lives, including iodine 129 (half-life of 15.7 million years).
No wonder the U.S. nuclear industry gave up on thorium reactors in the 1980s. It was an unmitigated disaster, as are many other nuclear enterprises undertaken by the nuclear priesthood and the U.S. government.
Illegal transport of thorium at Georgia’s border with Armenia
Georgia intercepts radioactive substance at border with Armenia http://www.xinhuanet.com/english/2019-07/15/c_138229300.htm Source: Xinhua Editor: yan TBILISI, July 15 – Georgia on Monday detained an Armenian citizen who was charged with illegally transporting the radioactive substance Thorium at the border with Armenia.
According to the Georgian State Security Service, the radioactive substance was intercepted at the Sadakhlo checkpoint when the suspect in a mini-bus was inspected.
The total weight of the packages carried by the suspect was 71.63 kg, and they contained radioactive isotope Thorium 232, which is a nuclear material and poses a threat to life and health.
The mini-bus was moving from Armenia to Russia through Georgia.
If convicted, the detainee will face 5 to 10 years in prison.
-
Archives
- December 2020 (38)
- November 2020 (297)
- October 2020 (394)
- September 2020 (349)
- August 2020 (352)
- July 2020 (281)
- June 2020 (295)
- May 2020 (251)
- April 2020 (274)
- March 2020 (308)
- February 2020 (223)
- January 2020 (258)
-
Categories
- 1
- 1 NUCLEAR ISSUES
- business and costs
- climate change
- culture and arts
- ENERGY
- environment
- health
- history
- indigenous issues
- Legal
- marketing of nuclear
- media
- opposition to nuclear
- PERSONAL STORIES
- politics
- politics international
- Religion and ethics
- safety
- secrets,lies and civil liberties
- spinbuster
- technology
- Uranium
- wastes
- weapons and war
- Women
- 2 WORLD
- ACTION
- AFRICA
- AUSTRALIA
- Christina's notes
- Christina's themes
- culture and arts
- Fukushima 2017
- Fukushima 2018
- fukushima 2019
- Fukushima 2020
- general
- global warming
- Humour (God we need it)
- Nuclear
- RARE EARTHS
- Reference
- resources – print
- Resources -audiovicual
- World
- World Nuclear
- YouTube
-
RSS
Entries RSS
Comments RSS
