Reactor fuel. Medical search. Frequent questions

3] The purpose of this experiment was to determine the feasibility of a nuclear reactor using light water as a moderator and coolant, and cladded solid uranium as fuel. (feministlawprofessors.com)
Although the coolant flow rate in commercial PWRs is constant, it is not in nuclear reactors used on U.S. Navy ships. (feministlawprofessors.com)
A fuel failure is any breach of the cladding that allows coolant to enter the fuel rod and contact the fuel pellets and fission products. (feministlawprofessors.com)
The code models many physical phenomena, including heat conduction through the fuel and cladding to the coolant, cladding elastic and plastic deformation, fuel elastic deformation, fuel swelling and densification,fuel-cladding mechanical interaction, fission gas release from the fuel, rod internal pressure, cladding oxidation and hydriding. (feministlawprofessors.com)
Many countries are actively developing reactor, coolant, fuel and fuel cycle technologies. (iaea.org)
Established in 2020, Warrington-based MoltexFLEX is developing an entirely new nuclear reactor design, using two separate molten fluroide salts for the fuel and the coolant. (theengineer.co.uk)
It uses many of the same principles - the salt fuel pin, the salt coolant - it looks the same in that way. (theengineer.co.uk)
[1] All existing HTGR reactors use helium coolant. (wikipedia.org)
CVCS filter elements are expected to provide maximum removal of irradiated particulate and eliminate erosive wear of reactor coolant pump (RCP) seal surfaces. (pall.com)
The nuclear and industrial safety agency (NISA) has tried to circulate the coolant by steam instead of electricity, but NHK reported that attempts to lower the temperature inside the reactor chamber have not worked well. (planetsave.com)
However, I was wondering if a specially-engineered Generation IV high or very high temperature (800-1,000ºC) nuclear reactor could work in Venus using the local atmosphere at 450ºC as 'coolant', just like a 'typical' reactor operating at 300ºC works on Earth. (physicsforums.com)
The use of liquid lead as a coolant allows the design of a passively safe reactor in a very compact format. (lu.se)

The new facility will will help establish the fuel supply chain that will be required for the deployment of advanced reactors in the USA and globally, Tammy Orr, GNF-A's senior vice president, fuel products, said. (world-nuclear-news.org)
DOE's demonstration reactors will require nearly 40 metric tons of HALEU by 2030 and the Nuclear Energy Institute estimates nearly 3,000 metric tons of HALEU will be needed by 2035 to support the demonstration and commercial deployment of advanced reactors. (energy.gov)

Upon the request of Member States, the IAEA has assisted with the conversion of research reactor fuels to low enriched uranium (LEU) in order to reduce the proliferation risks associated with HEU, which contains more than 20% fissile uranium-235. (iaea.org)
Today's #ThrowbackThursday post looks at the initial debate surrounding the conversion of research reactor fuel from high-enriched uranium to low-enriched uranium. (ans.org)

This metal alloy shares similarities with the one used in lead-cooled reactors. (azocleantech.com)

Fukushima Dai-1 uses six boiling water reactors to produce electricity for TEPCO. (ieee.org)
An operation with potentially "apocalyptic" consequences is expected to begin in a little over two weeks from now - "as early as November 8" - at Fukushima's damaged and sinking Reactor 4, when plant operator TEPCO will attempt to remove over 1300 spent fuel rods holding the radiation equivalent of 14,000 Hiroshima bombs from a spent fuel storage tank perched on the reactor's upper floor. (bsnews.info)
A chorus of voices has been sounding alarm over the never-been-done-at-this-scale plan to manually remove the 400 tons of spent fuel by TEPCO, who so far has been responsible for mishap after mishap in the ongoing crisis at the crippled nuclear plant. (bsnews.info)
A report in May by the Tokyo Electric Power Company (TEPCO), which is the plant's operator, said that a failure in reactor No.2's pressure relief systems was one of the causes of the disaster. (rt.com)

Light Water Reactor Fuel Enrichment beyond the Five Per Cent Limit: Perspectives and Challenges. (feministlawprofessors.com)
As a means of improving the gap-thermal conductance, a liquid metal (LM) is proposed as the gap-filling material replacing helium gas in the conventional light water reactor fuel rod. (feministlawprofessors.com)
Technical report on densification of light water reactor fuel. (iaea.org)

Results of the evaluations are, The cladding on light water reactor (LWR) fuel rods provides a stable enclosure for fuel pellets and serves as a first barrier against fission product release. (feministlawprofessors.com)
Fuel rods are bundled into a fuel assembly with 7 to 10 spacer grids to separate and hold the rods in place. (feministlawprofessors.com)
The present article presents the mechanical characterization of the fuel rods oscillator developed for the purposes of the COLIBRI experimental program in CROCUS. (epj-conferences.org)
An in-core device was designed, tested, and licensed between 2015 and 2019 for fuel rods oscillation in CROCUS, in successive steps from out-of-pile tests with dummy fuel rods to critical in-core tests. (epj-conferences.org)
The device allows simultaneously oscillating up to 18 fuel rods. (epj-conferences.org)
The reactor No. 4 spent-fuel pool generates more heat than the others, he said, because the rods that have remaining active life are in it. (infiniteunknown.net)
The new cooling systems would continuously remove radioactive decay heat, lower the amount of water vapor from the spent fuel pools and ensure fuel rods are kept under water, the company said. (infiniteunknown.net)
Pellets of uranium fuel are contained in long, narrow fuel rods made of an alloy of zirconium. (ieee.org)
There are thousands of these fuel rods inside a reactor's innermost chamber, which is called the pressure vessel. (ieee.org)
Water inside the pressure vessel keeps the fuel rods from overheating, and also creates the steam for the turbines. (ieee.org)
Fuel rods are reportedly fully exposed. (planetsave.com)
NISA is reportedly also considering opening a hole in the reactor housing building to release hydrogen generated by the exposed fuel rods. (planetsave.com)
spent fuel rods will be pulled from the racks they are stored in and inserted one by one into a heavy steel chamber while the assemblies are still under water. (bsnews.info)
Removing the fuel rods is a task usually assisted by computers that know their exact location down to the nearest millimeter. (bsnews.info)
Spent fuel rods must be kept cool at all times. (bsnews.info)
The bring-down of the fuel rods from Fukushima Unit 4 may be the most dangerous engineering task ever undertaken. (bsnews.info)

Its purpose is to provide China with fast-reactor design, construction and operational experience and is a key facility for testing and researching components and materials to be used in subsequent fast reactors. (neimagazine.com)
The nuclear industry has from its inception recognized the important role of fast reactors and related fuel cycles in ensuring the long term sustainability of nuclear power. (iaea.org)
Fast reactors operated in a closed fuel cycle help to improve the utilization of resources - both fissile and fertile materials - used in nuclear fuels. (iaea.org)
This improvement is possible because fast reactors can breed fissile materials and, using modern fuel cycle technologies, recycle materials bred in these reactors. (iaea.org)
In this way, fast reactors and related fuel cycle technologies can make an enormous contribution to the sustainability of nuclear energy production. (iaea.org)

In addition, light-water reactors make up the vast majority of reactors that power naval nuclear-powered vessels. (feministlawprofessors.com)
There are three varieties of light-water reactors: the pressurized water reactor (PWR), the boiling water reactor (BWR), and (most designs of) the supercritical water reactor (SCWR). (feministlawprofessors.com)
The Light Water Graphite Reactor is like a combination of the Advanced Gas Cooled Reactor and the Steam Generating Heavy Water Reactors (Heavy Water Light Water Reactor). (feministlawprofessors.com)
The remaining pressurised water reactors have an installed net capacity of 865MW (unit 2), 1,064MW (unit 3), and 1,130MW (unit 4). (power-technology.com)
The main motivation is the increased amplitudes in the neutron noise distributions recorded in ex- and in-core detectors that have been observed in recent years in Siemens pre-Konvoi type of pressurized water reactors. (epj-conferences.org)
This means they do not require the containment vessel, piping, and safety equipment of pressurised water reactors, which has significant knock-on effects for cost. (theengineer.co.uk)
Development of a fuel cladding or a channel box applying silicon carbide (SiC), which has high accident tolerance, in place of zircaloy (Zry) or Steel Use Stainless (SUS) composing current light water reactors, has being proceeded with after the accident of Fukushima Daiichi Nuclear Power Plant (1F). (asme.org)
The first group is based on the design principles of well-established and widely used light water reactors, particularly pressurized water reactors (PWRs). (azocleantech.com)
Most benchmarks available in the reactor community are for light water reactors, arrived at using carefully controlled experiments and tightly specified materials and conditions. (ornl.gov)

Unable to cool itself, the Fukushima Daiichi power plant's reactors fell like dominos. (rt.com)

In the fast-growing 1960s Japanese business world, domestic reactor technology was mostly undeveloped so importing reactor designs and nuclear fuel proved to be the best economic option. (wikipedia.org)
The HEU fuels for research reactors became popular in the 1960s. (ans.org)
The 2019 handbook marks the first-ever publication of an MSR benchmark-and it was based on the Molten Salt Reactor Experiment (MSRE) performed at ORNL in the 1960s. (ornl.gov)

The Ghana Atomic Energy Commission, or GAEC, has built an international MNSR training facility that allows trainees from other countries to practice extracting mock HEU from the reactor vessel. (iaea.org)
This system establishes natural circulation between the reactor vessel and the high-pressure containment using ADS vent and sump recirculation valves. (azocleantech.com)
It has not, apparently, damaged the reactor itself or the containment vessel and authorities said radiation levels were normal around it. (planetsave.com)
Two in-vessel fuel manipulators (IVFM) operating from under the core with 4 degrees of freedom (DOF) must move the fuel assemblies between the core, storage and ex-vessel fuel transfer positions. (vub.be)
The fuel assemblies are then up-ended and inserted into the reactor vessel by manipulator cranes, where they are used to generate heat (through fission) for 54 months until they are replaced with new fuel assemblies. (duke-energy.com)
During refueling, the top of the reactor, or head, is removed from the reactor vessel. (duke-energy.com)

The demonstration plant will feature a 345 MWe sodium-cooled fast reactor with a molten salt-based energy storage system. (world-nuclear-news.org)
One of the main reasons for this proposed venue is that the sodium cooled fast reactor BN-800 was connected to the grid in December 2015 at the Beloyarsk nuclear power plant (NPP), which is located in the vicinity of Yekaterinburg. (iaea.org)

Fukushima's reactors are all still bleeding steadily and have been since last March. (fukushima-diary.com)
Fukushima's reactor No.2 could have suffered a complete meltdown according to Japanese researchers. (rt.com)

Refurbishment of a Candu reactor involves removing all the reactor's fuel and heavy water and isolating it from the rest of the power station before it is dismantled. (world-nuclear-news.org)
The same day, Candu Energy signed a framework joint venture (JV) agreement with China National Nuclear Corp. (CNNC) to build Advanced Fuel CANDU Reactor (AFCR) projects in China, and develop global opportunities for it (see brochure, below). (ebmag.com)

Reactor technologies under development include sodium- , lead- , gas-, molten salt- and even supercritical water-cooled systems and technologies and accelerator-driven systems. (iaea.org)
Warrington's MoltexFLEX is aiming to shake up nuclear energy with its low-cost molten salt reactor and grid storage. (theengineer.co.uk)
Molten salt reactors (MSRs) have been researched in various forms for decades and have several hypothetical advantages over existing nuclear technologies. (theengineer.co.uk)
A separate, non-radioactive molten salt transfers heat from the reactor core to heat exchangers. (theengineer.co.uk)
A man works on the graphite assembly for ORNL's Molten Salt Reactor Experiment in January 1964. (ornl.gov)
The historic experiment is the basis for a new molten salt reactor benchmark. (ornl.gov)
Now, thanks to researchers at the University of California-Berkeley and ORNL, there's a molten salt reactor benchmark in the 2019 OECD/NEA International Handbook of Evaluated Reactor Physics Experiments . (ornl.gov)
ORNL's historic Molten Salt Reactor Experiment is the basis for a new molten salt reactor benchmark published in the 2019 OECD/NEA International Handbook of Evaluated Reactor Physics Experiments. (ornl.gov)
Men work on a core assembly for ORNL's Molten Salt Reactor Experiment in March 1964. (ornl.gov)
Projects include understanding and development of Li batteries, development of Solid Oxide Fuel Cells (SOFCs), electro-reduction of spent nuclear fuels using molten salt reactions, and monitoring corrosion in PEM fuel cells. (lu.se)

May 4, 2020 - Framatome and the Technical University of Munich (TUM) recently began the commercial development of uranium-molybdenum fuel (UMo) for nuclear research reactors. (powermag.com)

They have been monitoring the Daiichi nuclear power plant since April, but say they have found few signs of nuclear fuel at the reactor's core. (rt.com)

Almost 3500 kg of high enriched uranium (HEU) has been removed from research reactor sites worldwide over the last few decades as part of global efforts supported by the IAEA. (iaea.org)
The international community has successfully provided technological solutions for converting HEU fuel to LEU fuel in research reactors," said Thomas Hanlon, Nuclear Engineer Expert at the IAEA. (iaea.org)
A recent case is that of Ghana, where - with IAEA support - the successful conversion of their Ghana Research Reactor-1 (GHARR-1), a miniature neutron source reactor (MNSR), in 2017 turned the country into a case study for other MNSR operators. (iaea.org)
The International Atomic Energy Agency (IAEA) now proposes, almost four years later, to bring the fast reactor and related fuel cycle community together again. (iaea.org)
Angarsk is also under consideration as a spot for an IAEA sponsored international uranium fuel bank, and processing and storage of such large amounts of fresh and spent nuclear fuel would severely increase the environmental load on an already vulnerable territory. (bellona.org)

If it works, and the technologies are proven to be practical, the international community will then build a prototype commercial reactor, dubbed Demo. (bbc.co.uk)
The fuel assembly is the industry's first of its kind to be inserted into a commercial reactor and was developed through DOE's Accident Tolerant Fuel Program. (energy.gov)

The Phoenix Flow Reactor™ is an easy-to-use reactor designed for high temperature and high-pressure reactions, enabling the synthesis of novel compounds in a parameter space not achievable with standard laboratory equipment. (thalesnano.com)
When the emissions were aged in an oxidation flow reactor to simulate secondary organic aerosol (SOA) formation in the atmosphere, it was found that OA concentration strongly increased for all fuels. (lu.se)
The tests are performed using a tailored continuous flow reactor (CFR) system and new regimes/conditions for such reaction are investigated. (lu.se)

Two reactors have been operating for decades, while the third reactor entered commercial operation on July 31, becoming the first new nuclear unit built from scratch in the United States in decades. (everythinglubbock.com)
Georgia Power's 2.7 million customers are already paying part of the financing cost, as a well as a monthly rate increase of more than $4 for the third reactor, which takes effect with bills this month. (everythinglubbock.com)
The result is that another core has lost cooling and there is concern that a third reactor is going to explode. (planetsave.com)

Once fuel is loaded, operators will conduct tests and begin splitting atoms, which creates the high temperatures that boil steam that drives turbines, which generates electricity. (everythinglubbock.com)

For decades, it was a notable gap in the benchmark database for the international reactor community. (ornl.gov)

Unlike the burning of fossil fuels, fusion reactions produce no carbon dioxide, the greenhouse gas blamed by scientists for warming the planet (ancillary activities such as construction will, of course). (bbc.co.uk)
We cannot rely on fossil fuels indefinitely. (bbc.co.uk)
Secondly, the greenhouse gases produced through the burning of fossil fuels are a major driver of climate change, scientists believe. (bbc.co.uk)
A way to reduce harmful exhaust and greenhouse gas (GHG) emissions and secure the sources of energy is to develop technology for an efficient diesel engine operation independent of fossil fuels. (lu.se)
In order to characterize and explain the difference in exhaust emissions from fossil diesel, HVO and RME fuels, particulate matter (PM) emissions were sampled at two exhaust positions of an experimental single cylinder Scania D13 heavy-duty (HD) diesel engine: at the exhaust manifold, and after a diesel oxidation catalyst (DOC). (lu.se)
Finding alternative ways of producing, storing and transforming energy in order to reduce carbon dioxide emissions from fossil fuels is necessary to reduce the impact on the climate. (lu.se)
Climate change and the rapid depletion of fossil fuel sources globally has injected new motivation into the pursuit of producing efficient, renewable feedstocks or biofuels for modern transportation. (lu.se)

It covers the production and supply of fuel assemblies in 2017 and 2018 for loading into the unit in 2019, Rosatom said. (neimagazine.com)
French company Areva has signed a contract to supply fuel assemblies for Vattenfall Nuclear Fuel's Ringhals 3 and 4 reactors from 2019. (power-technology.com)
Lead test assemblies of the design have already been operating in Ringhals 3 plant since 2012 and they fully meet Vattenfall's requirements for safety and fuel quality. (power-technology.com)
Areva's customers, sales, contracts, and services fuel senior vice-president Klaus Al Usta said: "Our fuel assemblies have been successfully tested in Ringhals during the past years. (power-technology.com)
The company will manufacture the fuel assemblies at its Lingen site in Germany. (power-technology.com)
Georgia Power Co. says workers will transfer 157 fuel assemblies into the reactor core at Plant Vogtle, southeast of Augusta, in the next few days. (everythinglubbock.com)
Paul Gunter, MD, Director of the Reactor Oversight Project with Takoma Park, Md.-based Beyond Nuclear , also sounded alarm on Thursday, telling Common Dreams in a statement that "Given the uncertainties of the condition and array of the hundreds of tons of nuclear fuel assemblies, it will be a risky round of highly radioactive pickup sticks. (bsnews.info)
After nuclear fuel assemblies are built at the fuel fabrication facility, they are transported to a nuclear power plant. (duke-energy.com)
Different types of nuclear reactors require different designs of fuel assemblies, so each shipment is tailored to the specific nuclear plant receiving the assemblies. (duke-energy.com)
Fuel assemblies arrive at Duke Energy's nuclear fleet by truck. (duke-energy.com)
During transport, the fuel assemblies are housed in robust containers. (duke-energy.com)
In the fission process, uranium in the fuel assemblies is bombarded with neutrons, which split the uranium atoms. (duke-energy.com)
As mentioned in a previous article , when a unit shuts down for refueling, the reactor cavity is flooded with water and about one-third of the fuel assemblies (the oldest assemblies in the reactor) are taken out of the core and placed in the used fuel pool. (duke-energy.com)
The remaining fuel is carefully relocated in the reactor to maximize the energy use from each fuel assembly, and the new fuel assemblies are loaded into the core. (duke-energy.com)
The oldest fuel assemblies are removed from the reactor using manipulator cranes and transported through the transfer canal to the used fuel pool, where they are stored until they are cool enough for dry storage in large, robust concrete containers. (duke-energy.com)
After the fuel assemblies have been placed into the reactor to form the new reactor core, the reactor head is reinstalled. (duke-energy.com)

ANSI/ANS-8.21-2023 provides guidance for the use of neutron absorbers, including Raschig rings, as an integral part of nuclear facilities equipment, fissile material, or fuel components outside reactors, where such absorbers are credited to provide criticality safety control. (ans.org)

OPG has also applied to the CNSC for a licence to construct Canada's first grid-scale small modular reactor at Darlington, which is the only site in Canada currently licensed for new nuclear build. (world-nuclear-news.org)
The facility is part of a major expansion to GE Hitachi Nuclear Energy's (GEH) Wilmington operations that will also support commercial deployment of the BWRX-300 small modular reactor (SMR). (world-nuclear-news.org)
In this respect, small modular reactors (SMRs), a relatively new type of modern reactor, are gaining popularity due to their small size and high efficiency. (azocleantech.com)
Small modular reactors (SMRs) can generate significant amounts of low-carbon electricity for domestic and industrial usage while physically occupying much less space as compared to conventional nuclear energy generation plants. (azocleantech.com)
Since then, numerous countries have been consistently engaged in the ongoing development of small modular reactors. (azocleantech.com)

In most of Fukushima Dai-1's reactors, the radioactive element uranium is the source of the nuclear fission reaction: when one atom of the uranium isotope U-235 breaks down into smaller parts, it produces both energy and neutrons. (ieee.org)
These fission reactors run on processed uranium and leave behind radioactive waste. (singularityhub.com)
Fusion reactors would run on abundant hydrogen isotopes and, in theory, create significantly more energy than fission with comparatively little waste. (singularityhub.com)
Once the fuel is in the reactor, it undergoes the process of fission. (duke-energy.com)

Two full-scale pebble-bed HTGRs, the HTR-PM reactors, each with 100 MW of electrical production capacity, have gone operational in China as of 2021. (wikipedia.org)
The U.S. Department of Energy (DOE) spent a record $1.3 billion to support nuclear energy research in 2021 and is receiving billions more through the Bipartisan Infrastructure Law to support the current U.S. reactor fleet and help deploy new advanced reactor designs within the decade. (energy.gov)

The term usually refers to fuel containing 93 percent of the fissionable isotope uranium-235. (ans.org)

Today, about 220 research reactors operate across 53 countries, and 171 of these reactors were constructed with an HEU core. (iaea.org)
OPG is refurbishing all four Candu units at Darlington in a 10-year, CAD12.8 billion (currently about USD9.5 billion) project that will enable the reactors to operate for the next 30 years. (world-nuclear-news.org)
The new fuel prototype is expected to reduce corrosion and hydrogen production under high-temperature conditions and will operate in the reactor for the next four to six years as the team monitors its performance with routine inspections. (energy.gov)
Could a high / very high temperature nuclear reactor operate in Venus? (physicsforums.com)

The Department of Energy has awarded two grants totaling about $2 million to Idaho State University's Eric Burgett to develop advanced radiation detectors and measure fuel inside nuclear reactors. (isu.edu)
Burgett, an assistant professor in the ISU School of Engineering Department of Nuclear Engineering and Health Physics, received one grant for $1.19 million to measure fuel inside of reactors and $800,000 to develop advanced radiation detectors. (isu.edu)
COLIBRI aims at investigating the radiation noise related to fuel vibrations. (epj-conferences.org)
However, even the toughest models are having trouble weathering the deadly radiation levels: as one robot sent into reactor No.1 broke down three hours into its planned 10-hour foray. (rt.com)
Man-made sources of radiation are found in consumer products, industrial equipment, atom bomb fallout, and to a smaller extent, from hospital waste and nuclear reactors. (cdc.gov)

What is Iter (International Thermonuclear Experimental Reactor, or "the way" in Latin)? (bbc.co.uk)
Iter is an experimental reactor that will attempt to reproduce on Earth the nuclear reactions that power the Sun and other stars. (bbc.co.uk)
In 2005, the Iter partners agreed to site the reactor at Cadarache in southern France after a long period of negotiation. (bbc.co.uk)
The best-known tokamak is the ITER reactor, some of whose electromagnets weigh roughly the same as a Boeing 747 . (singularityhub.com)
More compact reactor designs that are cheaper and smaller than ITER-like tokamaks while delivering the same power output. (singularityhub.com)

The maximum allowed temperature of a fuel rod is 600 °C (1,112 °F). The light-water reactor also uses ordinary water to keep the reactor cooled. (feministlawprofessors.com)
Based on these results, limits on reactor operating power, pressure, and temperature during extended lifetime were defined to allow LWBR to achieve over 29,000 EFPH of satisfactory operation. (feministlawprofessors.com)
A high-temperature gas-cooled reactor (HTGR) is a type of gas-cooled nuclear reactor which use uranium fuel and graphite moderation to produce very high reactor core output temperatures. (wikipedia.org)
A proposed development of the HGTR is the Generation IV very-high-temperature reactor (VHTR) which would initially work with temperatures of 750 to 950 °C. (wikipedia.org)
The use of a high-temperature, gas-cooled reactor for power production was proposed by in 1944 by Farrington Daniels , then associate director of the chemistry division at the University of Chicago's Metallurgical Laboratory . (wikipedia.org)
Peter Fortescue , whilst at General Atomics , was leader of the team responsible for the initial development of the High temperature gas-cooled reactor (HTGR), as well as the Gas-cooled Fast Reactor (GCFR) system. (wikipedia.org)
Experimental HTGRs have also existed in the United Kingdom (the Dragon reactor ) and Germany ( AVR reactor and THTR-300 ), and currently exist in Japan (the High-temperature engineering test reactor using prismatic fuel with 30 MW th of capacity) and China (the HTR-10 , a pebble-bed design with 10 MW e of generation). (wikipedia.org)
When applying SiC to core structures of a nuclear power plant such as fuel cladding, it is expected that the difference of high temperature oxidation characteristics in the severe accident (SA) conditions would mitigate progression of core damage comparing with the current Zry fuel core. (asme.org)
In the case of 1.0 time of the reaction rate, which means an original reaction rate, maximum fuel cladding temperature exceeded 2000K in 50 hour after reactor scram. (asme.org)
However, using the reaction rate below 0.01 to the original one, the fuel cladding temperature didn't exceed 1,600K. (asme.org)
For medium-size district heating schemes, low-temperature heat transport from simple heat-only reactors suitable for closer location to cities is of interest. (who.int)

Construction of the fuel facility, which will use high-assay low enriched uranium, is expected to begin in 2023. (world-nuclear-news.org)
ANSI/ANS-8.21-2023, Use of Fixed Neutron Absorbers in Nuclear Facilities Outside Reactors , has just been issued by the American Nuclear Society Standards Committee. (ans.org)
FILE - Nuclear reactors and cooling towers of the four units of Plant Vogtle, a nuclear plant near Waynesboro, Ga., are shown on July 31, 2023. (everythinglubbock.com)
Georgia Power Co. announced Thursday, Aug. 17, 2023, that Unit 4, at far right, is loading fuel, with the aim of sending power to the grid reliably by March 2024. (everythinglubbock.com)

TUM and Framatome's collaboration on the development of this new fuel guarantees a reliable and efficient source of neutrons for research, industry and medicine," said Professor Peter Müller-Buschbaum, scientific director of TUM's FRM II nuclear research reactor. (powermag.com)
When a large enough quantity of uranium fuel is gathered together it starts a self-sustaining chain reaction, in which emitted neutrons smack into other uranium atoms and cause them to split in turn. (ieee.org)
The energy heats the water in the reactor and the neutrons split other atoms, thus perpetuating the nuclear chain reaction. (duke-energy.com)

Framatome and TUM will design and install the fuel manufacturing production line, and develop, produce and irradiate new fuel prototypes. (powermag.com)
By producing this new fuel for TUM, Framatome allows research reactors to maintain performance while using low-enriched uranium," said François Gauché, director of the CERCA Business Line at Framatome. (powermag.com)
The success of this project, in addition to providing significant support to one of its main customers, will allow Framatome to position itself well in the manufacture of UMo research fuel. (powermag.com)

Pyrolysis oil prepared by conventional (non-catalytic) fast pyrolysis is not suitable for integrating into the current fuel infrastructure or into a petroleum refinery because it is : a) thermally unstable with a high fouling tendency, b) corrosive due to high carboxylic acid content (pH 2.2 - 2.4 typically), and c) not miscible with refinery feedstocks. (aiche.org)
SSRs differ from other MSRs currently under development in that they restrict the highly radioactive fuel salt to tubes, similar to conventional reactors. (theengineer.co.uk)
The reactor core can be either a "prismatic block" (reminiscent of a conventional reactor core) or a " pebble-bed " core. (wikipedia.org)
Innovative technology-based reactors generate higher exhaust temperatures compared to their conventional water-cooled counterparts. (azocleantech.com)

Reassembly of the Darlington 3's reactor core was completed in July. (world-nuclear-news.org)
One of the huge issues in advanced reactor research is monitoring reactor core fuel behavior, Imel said, referring to the Burgett's grant to measure fuel inside of reactors. (isu.edu)
The neutron moderator is graphite, although whether the reactor core is configured in graphite prismatic blocks or in graphite pebbles depends on the HTGR design. (wikipedia.org)
In addition to that, in the case of replacing SUS structures in the reactor core into SiC, an amount of hydrogen generation moreover reduced to about 1/6 than the above result, which means just about 2% of an amount in the original case. (asme.org)
Our staff have expertise across core neutronics, thermal hydraulics and transients, including extensive experience in licensing currently operating research and test reactors. (anl.gov)
The Research Reactor Methods and Codes group also maintains two high performance clusters with a collection of advanced core physics and thermal hydraulic codes for our analysts and international collaborators. (anl.gov)
A "core meltdown" might have occurred at reactor 2 Fukushima Daiichi. (planetsave.com)
These are used to give a better picture of the inside of the reactor as the levels of radioactivity at the core mean it is impossible for any human to go anywhere near it. (rt.com)
This is in sharp contrast to reactor No.5, where the fuel is clearly visible at the core, the Japanese broadcaster NHK reports. (rt.com)
Once the fuel assembly passes inspection, the fuel team inserts it into the used fuel pool or new fuel storage racks where it is stored until it is loaded into the reactor core. (duke-energy.com)
To load an assembly into the reactor core, it is laid-down horizontally and transferred underwater through a transfer tube to the containment building. (duke-energy.com)
One could consider a direct open Brayton cycle in which the compressed atmospheric gases are passed through the core directly, assuming one could ensure integrity of the fuel in the core. (physicsforums.com)

State-of-the-art media design, application experience and unsurpassed removal efficiencies have made Pall the world standard in nuclear safety, control, radioactive waste treatment and fuel pool clean-up. (pall.com)

The zirconium alloy tubes are pressurized with helium to try to minimize pellet cladding interaction which can lead to fuel rod failure over long periods. (feministlawprofessors.com)

DOE recently announced plans to establish a High-Assay Low-Enriched Uranium (HALEU) Availability program to directly address a pressing fuel need by the U.S. nuclear industry. (energy.gov)

Global Nuclear Fuel-Americas (GNF-A) and TerraPower are to build the Natrium Fuel Facility at GNF-A's existing site in North Carolina. (world-nuclear-news.org)
The Natrium Fuel Facility will be jointly funded by TerraPower and the US Department of Energy through the Advanced Reactor Demonstration Program. (world-nuclear-news.org)
TerraPower last year announced the site of a retiring coal plant near Kemmerer in Wyoming for its Natrium advanced reactor demonstration project. (world-nuclear-news.org)
Reinvigorating the domestic nuclear supply chain is a critical step in building the next generation of reactors,' said Tara Neider, TerraPower senior vice president and Natrium project director. (world-nuclear-news.org)
Renderings of TerraPower and X-energy advanced reactor power plants. (energy.gov)
X-energy is planning to site its four-unit Xe-100 reactor power plant at the Hanford site near Richland, Washington, while TerraPower will leverage the existing infrastructure and workforce at a retiring coal facility in Kemmerer, Wyoming, to build its Natrium reactor. (energy.gov)

A hydrogen explosion at the number 3 reactor at the Fukushima No 1 nuclear injured 11 people. (planetsave.com)
Immediately after reactor 1 had hydrogen explosion on 3/12/2011, the wind direction forecast of meteorological bureau was concealed. (fukushima-diary.com)

In the third week, further discoveries of highly radioactive water outside the reactor buildings showed that the contamination was spreading. (ieee.org)

Since Japan had very few hydraulic energy resources, breeder reactors and renewable energy were attractive technologies. (wikipedia.org)
Fusion might provide the perfect complement to renewable energy in the future - but building fusion reactors has proven a tough nut to crack. (singularityhub.com)

In 2018, Nigeria's only operating research reactor, Nigeria Research Reactor-1 (NIRR-1), underwent HEU removal and conversion to LEU. (iaea.org)
In 2018, the 450 commercial nuclear power reactors in operation worldwide, with a net generating capacity of 396 GWe, required about 59,200 tU annually. (world-nuclear-news.org)

The MYRRHA project will prove to be a groundbreaking research reactor, being the first in the world to be powered by a particle accelerator. (azocleantech.com)
This is one of the principal aims of the MYRRHA (Multi-purpose, hYbrid Research Reactor for High-tech Applications) GEN-IV reactor project. (vub.be)
As a subcritical reactor driven externally by a high-powered accelerator, MYRRHA will be one of the earliest global demonstrations of accelerator-driven systems (ADS). (vub.be)
The IVFM is thus a critical component of the MYRRHA reactor - it is essential to demonstrate its safe operation in proving the feasibility of the reactor by 2014. (vub.be)

Seventy-one HEU fuel reactors have been converted to LEU since 1978. (iaea.org)
M3 continues the mission of the Department of Energy ( DOE ) Reactor Conversion Program that has converted over 70 reactors worldwide from the use of highly enriched uranium ( HEU ) to low enriched uranium ( LEU ) fuel since 1978 while deploying for the first time several new nuclear fuels, including uranium silicide (U 3 Si 2 ). (anl.gov)

Framatome's first complete accident tolerant fuel assembly was recently installed at the Calvert Cliffs Nuclear Power Plant in Maryland. (energy.gov)

Energy (DOE) Light Water Reactor Sustainability (LWRS) Program initiated an Industry Application Pilot Demonstration Project to support the development and deployment of the fuel discharge burnup extension and increased enrichment technologies that are capable of achieving economic improvements, as well as timely widespread adoption by the U.S. nuclear industry. (feministlawprofessors.com)

The Power Reactor and Nuclear Fuel Development Corporation (PNC) (動力炉・核燃料開発事業団, Dōryokuro Kakunenryō Kaihatsu Jigyōdan) or 動燃 (Dōnen) for short, was a Japanese nuclear energy research organization established 2 October 1967 with the Atomic Fuel Corporation as its parent organization and disbanded in 1998 to be restructured as the Japan Nuclear Cycle Development Institute. (wikipedia.org)
After the conversion of Nigeria's reactor, there are no more HEU-fuelled research reactors in Africa. (iaea.org)
Although 71 research reactors have been converted to LEU, and 28 that were HEU-fuelled have been shut down, another 72 are still powered by HEU. (iaea.org)
The project will take place at the CERCA Research and Innovation Lab (CRIL), Framatome's new research and development laboratory dedicated to advancing the fabrication of nuclear fuels for medical, research and sterilization applications. (powermag.com)
We look forward to advancing this fuel technology and developing a new fuel option for research reactors. (powermag.com)
One might wonder what on earth the Olympics has to do with the debate in Washington about HEU fuel for research reactors. (ans.org)
Well, as the article explains, it involves the research reactor at the University of California at Los Angeles. (ans.org)
The Nuclear Regulatory Commission will soon receive a staff proposal to order almost all universities with research reactors to convert to low-enriched uranium (LEU) fuels. (ans.org)
The issue became a matter of grave international concern in 1981, when Israel destroyed the research reactor in Iraq on the grounds that the facility would use HEU fuels and, thus, could become a factory for bombs to be used against Israel. (ans.org)
Subsequent political and diplomatic negotiations have led to urgent calls, especially in the United States, to convert research reactors to LEU fuels only (see text of Mathias Amendment, page 120, this issue) . (ans.org)
A research program at Argonne National Laboratory has led to a recent conclusion that satisfactory fuels can be designed for most university reactors, and in 1982, the NRC issued a call to "encourage" the shift from HEU to LEU fuels at most university facilities. (ans.org)
The nuclear engineering faculties at universities with research reactors are nervous about the consequences of any conversion order, fearing that any major new activities surrounding their reactors could stir up a campus protest that could easily lead to orders to shut down many of these vital research tools. (ans.org)
Our department leads the engineering design, development and testing needed to bring advanced reactors and fuels online across a wide range of types of research and test reactors. (anl.gov)
Through collaborations with many domestic and international organizations, we engage in the design, development and deployment stages required to bring new fuels into research and test reactors across the world. (anl.gov)
We also develop and distribute custom software for the design and licensing of research and test reactors. (anl.gov)
See the Reduced Enrichment for Research and Test Reactors ( RERTR ) website for further information on our work and the RERTR annual international meeting. (anl.gov)
Powers said the research is a good example of the worth of looking closely at ORNL's groundbreaking history of building reactors. (ornl.gov)
His research interests are in electrochemical engineering - the study and design of electrochemical processes in devices including fuel cells, batteries and electrochemical reactors. (lu.se)

A groundbreaking ceremony for the Natrium fuel facility took place alongside the announcement. (world-nuclear-news.org)
This facility will create a reliable source of fuel for our first demonstration plant and additional Natrium plants in the future. (world-nuclear-news.org)
Once complete, the Natrium Fuel Facility is expected to support up to 100 new, permanent jobs. (world-nuclear-news.org)

Under the terms of the agreement, new GAIA fuel design will be delivered by Areva for the reactors, which offer increased operational flexibility. (power-technology.com)

Fires at the building housing reactor No. 4, which was shut down at the time of the earthquake, raised a new set of concerns regarding spent nuclear fuel. (ieee.org)
At the time of the earthquake, three reactors were active and three were down for routine maintenance. (ieee.org)
After the last earthquake,reactor 4 seems to have got a fire. (fukushima-diary.com)

Candu Energy's AFCR is a 700MW Class Generation III reactor based on the CANDU 6 and Enhanced CANDU 6 (EC6) reactors with a number of adaptations to meet Canadian and international standards. (ebmag.com)
Candu Energy's work on recycled fuel offers the promise of more efficient reactor fleets and reduced used fuel storage volumes. (ebmag.com)
Tokamak Energy's more compact tokamak fusion reactor. (singularityhub.com)

That's a reactor explosion," he said. (fukushima-diary.com)
The blast had been anticipated and was similar to the explosion seen previously at the number 1 reactor. (planetsave.com)
The video above is of the second nuclear reactor explosion at the Fukushima Daiichi in Japan. (planetsave.com)

Japan and Russia have for several years been considering the possibility of extracting uranium from spent nuclear fuel reprocessed in the United Kingdom and France and re-enriching it in Russia," the Russian and Japanese environmental groups said in their joint statement. (bellona.org)
Dry casks of spent nuclear fuel on a storage pad. (energy.gov)
DOE is seeking feedback on using a consent-based siting process to identify sites to store the nation's spent nuclear fuel. (energy.gov)
Depleted uranium may also be produced in the reprocessing of spent nuclear reactor fuel. (who.int)

Backup generators are a key part of any nuclear power plant - they are essential to cool the plant in the event of power loss, in order to prevent a reactor meltdown. (rt.com)

3D-printed channel fasteners for Framatome's boiling water reactor fuel assembly. (energy.gov)

Anatomy2

Organisms34

Diseases3

Chemicals and Drugs95

Analytical, Diagnostic and Therapeutic Techniques and Equipment35

Phenomena and Processes41

Disciplines and Occupations7

Technology, Industry, Agriculture22

Humanities2

Information Science2

Health Care53

Geographicals2

Coolant12

Deployment of advanced reactors2

Conversion of research reactor2

Lead-cooled reactors1

TEPCO4

Light water reacto3

Rods16

Fast reactors5

Water reactors9

Plant's reactors1

1960s3

Vessel6

Sodium-cooled2

Fukushima's2

CANDU Reactor2

Molten salt10

20201

Reactor's1

IAEA5

Commercial reactor2

Flow Reactor3

Third reactor3

Splitting atoms1

International reactor1

Fossil7

Assemblies16

Fissile1

Small modular5

Fission4

20212

Uranium-2351

Operate4

Radiation5

Iter5

Temperature11

20234

Neutrons3

Framatome3

Conventional4

Core12

Radioactive Waste1

Helium1

High-assay low enriche1

TerraPower6

Hydrogen explosion2

Highly radioactive1

Renewable energy2

20182

MYRRHA4

19782

Accident tolerant fuel1

Sustainability1

Research18

Natrium3

Operational1

Earthquake3

Energy's3

Explosion3

Spent nuclear4

Meltdown1

Framatome's1