The LMFBR had a larger breeding rate ... and won the competition." The liquid fluoride thorium reactor ( LFTR; often pronounced lifter) is a type of molten salt reactor. After World War II, uranium-based nuclear reactors were built to produce electricity. Listen to the audio pronunciation of Thorium High Temperature Reactor on pronouncekiwi. One of these reactors is the High Temperature Reactor (HTR), which consists of a randomly packed bed of fuel pebbles that are cooled by helium.  Monazite is a good source of REEs (Rare Earth Element), but monazites are currently not economical to produce because the radioactive thorium that is produced as a byproduct would have to be stored indefinitely. The THTR-300 was a thorium high-temperature nuclear reactor rated at 300 MW electric (THTR-300) in Hamm-Uentrop, Germany. On September 1, 1989, the THTR-300 was deactivated due to its rising cost; in August 1989, the THTR company almost bankrupted after a long period of shut down due to broken components in the hot gas duct. A, Mining thorium is safer and more efficient than mining uranium. This collaboration will initially focus on SINAP’s Thorium Molten Salt Reactor—Solid Fuel 1 (TMSR-SF1). , In its January 2012 report to the United States Secretary of Energy, the Blue Ribbon Commission on America's Future notes that a "molten-salt reactor using thorium [has] also been proposed. The very-high-temperature reactor (VHTR) (see Fig. Thorium, when being irradiated for use in reactors, makes uranium-232, which emits gamma rays. The THTR-300 was a helium-cooled high-temperature reactor with a pebble bed core consisting of approximately 670,000 spherical fuel compacts each 6 centimetres (2.4 in) in diameter with particles of uranium-235 and thorium-232 fuel embedded in a graphite matrix. It is difficult to make a practical nuclear bomb from a thorium reactor's byproducts. House of Lords member Bryony Worthington is promoting thorium, calling it “the forgotten fuel” that could alter Britain's energy plans. " According to Martin, "China has made clear its intention to go it alone," adding that China already has a monopoly over most of the world's rare earth minerals. In addition, the transition to thorium could be done through the incineration of weapons grade plutonium (WPu) or civilian plutonium.  The World Nuclear Association notes that the China Academy of Sciences in January 2011 announced its R&D program, "claiming to have the world's largest national effort on it, hoping to obtain full intellectual property rights on the technology. " Nuclear physicist Victor J. Stenger, for one, first learned of it in 2012: It came as a surprise to me to learn recently that such an alternative has been available to us since World War II, but not pursued because it lacked weapons applications. , India's government is also developing up to 62, mostly thorium reactors, which it expects to be operational by 2025. For this reactor, various design options as regards fuel configurations, such as prismatic bed and pebble bed were considered for thermal hydraulics and temperature dsitrbi utoi n anaylssi. He failed.  From 1985 to 1989, the THTR-300 registered 16410 operation hours and generated 2891000 MWh, according to a full-load working time of 423 days. There is a higher cost of fuel fabrication and reprocessing than in plants using traditional solid fuel rods. Title: Article - Decommissioning of the Thorium High Temperature Reactor (THTR 300) by G, Dietrich, W Neumann and N. Rohl. Get the most popular abbreviation for Thorium High-temperature Reactor updated in 2020 If uranium were an asset, it would be a long-term CD with a penalty for convenient withdrawal. The THTR-300 was a thorium high-temperature nuclear reactor rated at 300 MW electric (THTR-300) in Hamm-Uentrop, Germany. On October 10, 1991, the 180-metre (590 ft) high dry cooling tower, which at one time was the highest cooling tower in the world, was explosively dismantled and from October 22, 1993 to April 1995 the remaining fuel was unloaded and transported to the intermediate storage in Ahaus. 3,492 crore, revised to Rs. This page was last edited on 27 December 2020, at 14:11. As of July 2013 the major equipment of the PFBR had been erected and the loading of "dummy" fuels in peripheral locations was in progress. This Reactor can facilitate a variety of different fuels using the same geometry.  Estimates to complete a reactor were originally set at ten years in 2006 (with a proposed operational date of 2015).. The Westphalia ministry of commerce created a fact finding committee. The THTR-300 was a helium-cooled high-temperature reactor with a pebble-bed reactor core consisting of approximately 670,000 spherical fuel compacts each 6 centimetres (2.4 in) in diameter with particles of uranium-235 and thorium-232 fuel embedded in a graphite matrix. The pressure vessel that contained the pebbles was prestressed concrete.  In 2009 the chairman of the Indian Atomic Energy Commission said that India has a "long-term objective goal of becoming energy-independent based on its vast thorium resources to meet India's economic ambitions.". It started operating in 1983, synchronized with the grid in 1985, operated at full power in February 1987 and was shut down September 1, 1989. From 2013 to 2017, 23 Million Euro were budgeted for lighting, safeguarding and the storage of the pellets in the interim storage facility in Ahaus. 600 MWTH INNOVATIVE HIGH TEMPERATURE REACTOR (IHTR) BARC is carrying out design of a 600 MWth reactor for commercial hydrogen production. A small modular nuclear reactor to replace coal plants could be on the market within 5 years. These were similar to the reactor designs that produced material for nuclear weapons. Comparing the amount of thorium needed with coal, Nobel laureate, Liquid fluoride thorium reactors are designed to be meltdown proof. The seventh is still conceptual, although currently in development by many countries:. Thorium High-temperature Reactor Reactor, Pebble, Thorium. However, development of thorium power has significant start-up costs. According to Chemical & Engineering News, "most people—including scientists—have hardly heard of the heavy-metal element and know little about it...," noting a comment by a conference attendee that "it's possible to have a Ph.D. in nuclear reactor technology and not know about thorium energy. In depth: Resource availability » Thorium MSR is safe The electric conversion system produced 308 megawatts of electricity. " In addition, Dr. Jiang Mianheng, son of China's former leader Jiang Zemin, led a thorium delegation in non-disclosure talks at Oak Ridge National Laboratory, Tennessee, and by late 2013 China had officially partnered with Oak Ridge to aid China in its own development. " China also finalized an agreement with a Canadian nuclear technology company to develop improved CANDU reactors using thorium and uranium as a fuel. Because of its inherent safety, they expect that similar designs could be set up "within" populated cities, like Mumbai or Delhi.  Heinz Riesenhuber, Federal Secretary of Research at that time, inaugurated it, and it first went critical on September 13, 1983. China expects to put thorium reactors into commercial use by 2030.. In late June 2012, India announced that their "first commercial fast reactor" was near completion making India the most advanced country in thorium research. It started operating in 1983, synchronized with the grid in 1985, operated at full power in February 1987 and was shut down September 1, 1989. By: Diarmuid Foley. " Senators Harry Reid and Orrin Hatch have supported using $250 million in federal research funds to revive ORNL research. Created Date: 11/4/2005 6:20:56 PM ORNL has developed two FHR-class MSR concepts: the 1,500 megawatt electric advanced high-temperature reactor (AHTR) and the 125 megawatt thermal small modular advanced high-temperature reactor (SmAHTR). , The primary fuel of the proposed HT3R research project near Odessa, Texas, United States, will be ceramic-coated thorium beads. During that period, the government of the United States also built an experimental molten salt reactor using U-233 fuel, the fissile material created by bombarding thorium with neutrons. Thorium's ore, Breeding in a thermal neutron spectrum is slow and requires extensive. STL is designing a generation IV high-temperature, gas-cooled, pebble-bed reactor, the HTMR100 (100 MWth high-temperature modular reactor). Though named thorium high temperature reactor, mostly U-235 was fissioned. Thereafter, thorium is to be the only fuel. Learn how and when to remove this template message, European Organization for Nuclear Research, https://www.nextbigfuture.com/2019/09/p3tek-recommends-thorcon-molten-salt-nuclear-reactor-for-indonesia.html, India's three-stage nuclear power programme, "Uses For Uranium-233: What Should Be Kept for Future Needs? The reactor itself, at the end of its lifetime, will constitute high level waste: 'With or without reprocessing, these fission products have to be disposed of in a geologic repository.' Thorium is three times as abundant as uranium and nearly as abundant as lead and gallium in the Earth's crust. The selection of water as reactor coolant was dangerous, however; it created the possibility of water escaping as high-temperature, high-pressure steam, or even worse reacting with metals in the reactor to release hydrogen gas, which could then cause an explosion. Category: Reactor Designs, Technology, Thorium. I was speechless. Thorium is a metal with radioactive properties that has the symbol Th and the atomic number 90 in the periodic table, and can be used as nuclear fuel in power plants to generate clean electricity. The operators played down the incident, which caused a loss of confidence in the regulatory authorities. Currently, the most common types of nuclear reactor fuel are: Some believe thorium is key to developing a new generation of cleaner, safer nuclear power. :7, Summarizing some of the potential benefits, Martin offers his general opinion: "Thorium could provide a clean and effectively limitless source of power while allaying all public concern—weapons proliferation, radioactive pollution, toxic waste, and fuel that is both costly and complicated to process. LFTRs use the thorium fuel cycle with a fluoride -based, molten, liquid salt for fuel. , Others, including former NASA scientist and thorium expert Kirk Sorensen, agree that "thorium was the alternative path that was not taken … ":2 According to Sorensen, during a documentary interview, he states that if the US had not discontinued its research in 1974 it could have "probably achieved energy independence by around 2000. The engineering maturity of pebble bed reactors, supported by experimental facilities, makes the HTMR100 as a Generation IV reactor licensable within the next few years. BHAVINI builds breeder reactors in India. Six of these have all entered into operational service at some point. 4.30) is a further step in the evolutionary development of high-temperature reactors (HTRs).  Conferences with experts from as many as 32 countries are held, including one by the European Organization for Nuclear Research (CERN) in 2013, which focuses on thorium as an alternative nuclear technology without requiring production of nuclear waste. Meaning; PWR. , Delays have since postponed the commissioning [criticality?] "Thorium-fuelled Reactor Using Molten Salt Technology", "India's experimental Thorium Fuel Cycle Nuclear Reactor [NDTV Report], Data taken from Uranium 2007: Resources, Production and Demand, Nuclear Energy Agency (2008), NEA#6345 (. In 1968, Nobel laureate and discoverer of plutonium, Glenn Seaborg, publicly announced to the Atomic Energy Commission, of which he was chairman, that the thorium-based reactor had been successfully developed and tested. , At the 2011 annual conference of the Chinese Academy of Sciences, it was announced that "China has initiated a research and development project in thorium MSR technology. The VHTR is an evolutionary design of the High Temperature Gas Reactor (HTGR). The THTR-300's power conversion system was similar to the Fort St. Vrain reactor in the USA, in that the reactor coolant transferred the reactor core's heat to water. The German THTR-300 was a prototype commercial power station using thorium as fertile and highly enriched U-235 as fissile fuel. However nothing is currently in any stage of development. The fourth reason for the high energy production is the MSR’s high operating temperature (550-700 degrees Celcius) that yields higher efficiencies of electricity production (Juhasz, et al., 2009, p. 4), (Hargraves & Moir, 2010, p. 311). It had to be bailed out by the government with 92 million Mark.. Proponents also cite the low weaponization potential as an advantage of thorium due to how difficult it is to weaponize the specific uranium-233/232 and plutonium-238 isotopes produced by thorium reactors, while critics say that development of breeder reactors in general (including thorium reactors, which are breeders by nature) increases proliferation concerns. Some experts note possible specific disadvantages of thorium nuclear power: Research and development of thorium-based nuclear reactors, primarily the Liquid fluoride thorium reactor (LFTR), MSR design, has been or is now being done in the United States, United Kingdom, Germany, Brazil, India, China, France, the Czech Republic, Japan, Russia, Canada, Israel, Denmark and the Netherlands. The waste heat from the THTR-300 was exhausted using a dry cooling tower. According to Dr. Shamanin, the blanket was based on a concept of a multi-purpose high-temperature gas-cooled low-power reactor fueled by thorium. The economic study for the advanced nuclear reactors of the fourth generation fuelled with thorium, e.g. In the hybrid thorium setup, thorium-plutonium pellets power a … In particular the thermal conductivity is important, since it leads to a lower fuel pellets temperature. The reactor construction has not yet begun. According to, There is much less nuclear waste when thorium is used as a fuel in a, According to Moir and Teller, "once started up [it] needs no other fuel except thorium because it makes most or all of its own fuel.". Producing Thorium pebbles for the High-Temperature Gas-Cooled Reactor (HTGR). According to the World Nuclear Association, there are seven types of reactors that can be designed to use thorium as a nuclear fuel. Estimated Additional Reserves REMOTE. India is the "only country in the world with a detailed, funded, government-approved plan" to focus on thorium-based nuclear power. https://www.nextbigfuture.com/2019/09/p3tek-recommends-thorcon-molten-salt-nuclear-reactor-for-indonesia.html, In May 2010, researchers from Ben-Gurion University of the Negev in Israel and Brookhaven National Laboratory in New York began to collaborate on the development of thorium reactors, aimed at being self-sustaining, "meaning one that will produce and consume about the same amounts of fuel," which is not possible with uranium in a light water reactor. Possibly", "Uranium Is So Last Century – Enter Thorium, the New Green Nuke", "Obama could kill fossil fuels overnight with a nuclear dash for thorium", "Alvin Radkowsky, 86, Developer Of a Safer Nuclear Reactor Fuel", Controlling threats to nuclear security a holistic model, "Safe nuclear does exist, and China is leading the way with thorium", http://www-pub.iaea.org/MTCD/publications/PDF/TE_1450_web.pdf, "High Efficiency Nuclear Power Plants Using Liquid Fluoride Thorium Reactor Technology", "Thorium fuel cycle – Potential benefits and challenges", Certain issues of economic prospects of thorium-based nuclear energy systems, "The thorium molten salt reactor: Moving on from the MSBR", "Thorium: Not a near-term commercial nuclear fuel", "Thorium power has a protactinium problem", "CERN to host conference on thorium technologies for energy", "Lightbridge Corp : Hans Blix Urges Support for Thorium Power Development", "Thorium Power Canada is in advanced talks with Chile and Indonesia for 10 MW and 25 MW solid thorium fueled reactors", "Moltex to partner in nuclear research and innovation cluster", "Second company investing in nuclear technology in N.B. This article discusses the benefits of a HTMR compared to other types of nuclear reactor. Dismantling is not expected to start before 2027. As of 2020, there are no operational thorium reactors in the world.. , According to Dr R K Sinha, chairman of their Atomic Energy Commission, "This will reduce our dependence on fossil fuels, mostly imported, and will be a major contribution to global efforts to combat climate change." The pebble bed thorium high-temperature reactor THTR 300 was shut down on September 1, 1989, after > 16 000 h operation time. THTR-300 was only in full service for 423 days. " In 1992, while a resident professor in Tel Aviv, Israel, he founded the US company, Thorium Power Ltd., near Washington, D.C., to build thorium reactors. The THTR-300 served as a prototype high-temperature reactor (HTR) to use the TRISO pebble fuel produced by the AVR, an experimental pebble bed operated by VEW. 153–63. "We have huge reserves of thorium. 1 ways to abbreviate Thorium High-temperature Reactor. Pressurized Water Reactor EAR. "In the past, the government was interested in nuclear power because of the energy shortage. India has the largest supplies of thorium in the world, with comparatively poor quantities of uranium. Lower Production of Transuranic Elements. Supervisor: Prof E Mulder, Post-Graduate School of Nuclear Science and Engineering. World monazite resources are estimated to be about 12 million tons, two-thirds of which are in heavy mineral sands deposits on the south and east coasts of India. Raluca presents the Pebble-Bed Advanced High Temperature Reactor (PB-AHTR), a Fluoride Salt Cooled High Temperature Reactor (FHR) designed by University of California (Berkeley) & ORNL & other universities. Reactor Details. Because this system used a Rankine cycle, water could occasionally ingress into the helium circuit. " Friends of the Earth UK considers research into it as "useful" as a fallback option. , In early 2012, it was reported that China, using components produced by the West and Russia, planned to build two prototype thorium MSRs by 2015, and had budgeted the project at $400 million and requiring 400 workers. On May 4, 1986, just 6 months after it had been connected to the power grid, a fuel pebble became lodged in a fuel feed pipe to the reactor core. Compared to the predominant reactor fuel, uranium dioxide (UO 2), thorium dioxide (ThO 2) has a higher melting point, higher thermal conductivity, and lower coefficient of thermal expansion. Though named thorium high temperature reactor, mostly U-235 was fissioned.  (see table "IAEA Estimates in tons"). In 2013 India's 300 MWe AHWR (pressurized heavy water reactor) was slated to be built at an undisclosed location. The German state of North Rhine Westphalia, Federal Republic of Germany, and Hochtemperatur-Kernkraftwerk GmbH (HKG) financed the THTR-300’s construction. The remaining facility was "safely enclosed". They estimated the reactor could function without an operator for 120 days. By 1992, a group of firms planned to proceed with construction of a HTR-500, the successor of the THTR-300, but up-rated to a thermal output of 1250 megawatts and an electrical output of 500 megawatts. The reactor was expected to go critical by September 2014. :157, In March 2014, with their reliance on coal-fired power having become a major cause of their current "smog crisis," they reduced their original goal of creating a working reactor from 25 years down to 10. As most of the suggested mineral deposits contain low concentrations of uranium and thorium, these could be recovered by a thermal process and used as fuel in the HTGRs. , Moir and Teller agree, noting that the possible advantages of thorium include "utilization of an abundant fuel, inaccessibility of that fuel to terrorists or for diversion to weapons use, together with good economics and safety features … " Student: SK Gintner. The THTR 300 is a project that is jointly sponsored by the Federal Republic of Germany, North Rhine-Westphalia, and Hochtemperatur-Kernkraftwerk GmbH.  Proved reserves are a good indicator of the total future supply of a mineral resource. ", In late 2012, Norway's privately owned Thor Energy, in collaboration with the government and Westinghouse, announced a four-year trial using thorium in an existing nuclear reactor. The 300 MWe Thorium High Temperature Reactor (THTR)at Hamm-Uentrop in Germany operated with thorium-HEU fuel between 1983 and 1989, when it was shut down due to technical problems. Consequently, some radioactive dust was released to the environment. Electricity generated from the PFBR would be sold to the State Electricity Boards at Rs. Science writer Richard Martin states that nuclear physicist Alvin Weinberg, who was director at Oak Ridge and primarily responsible for the new reactor, lost his job as director because he championed development of the safer thorium reactors. Thorium-based fuel cycles: Saving uranium in a 200 MW th pebble bed high temperature reactor. STL has designed a thorium refinery for the production of reactor-grade thorium. There are substantial deposits in several other countries (see table "World thorium reserves").  Validation of its core reactor physics was underway by late 2017. The pebble bed thorium high-temperature reactor THTR 300 was shut down on September 1, 1989, after > 16 000 h operation time. This … of the PFBR to September 2016, but India's commitment to long-term nuclear energy production is underscored by the approval in 2015 of ten new sites for reactors of unspecified types, though procurement of primary fissile material—preferably plutonium—may be problematic due to India's low uranium reserves and capacity for production. , A report by the Bellona Foundation in 2013 concluded that the economics are quite speculative.  India's first commercial fast breeder reactor—the 500 MWe Prototype Fast Breeder Reactor (PFBR)—is approaching completion at the Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu. The heat source is based on a fuel technology with intrinsic safety characteristics. Since all natural thorium can be used as fuel no expensive fuel enrichment is needed. The original cost of the project was Rs. 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