Sentences with phrase «fueling fast reactors»

Not exact matches

Briefly, fissioning atoms in the nuclear reactor's fuel emit neutrons that are traveling too fast to efficiently cause other atoms to fission.

U.S. policy should aim at development of self - sustaining «fast» reactors that generate enough fuel to maintain operations, rather than pursuing breeder reactors that create excess fuel, the report says.

It would be converted to a metallic fast - reactor fuel and then transferred to ALMR - type reactors.

This nuclear fuel cycle would combine two innovations: pyrometallurgical processing (a high - temperature method of recycling reactor waste into fuel) and advanced fast - neutron reactors capable of burning that fuel.

In the 1980s this research was directed toward a fast reactor (dubbed the advanced liquidmetal reactor, or ALMR), with metallic fuel cooled by a liquid metal, that was to be integrated with a high - temperature pyrometallurgical processing unit for recycling and replenishing the fuel.

Coupling Reactor Types If advanced fast reactors come into use, they will at first burn spent thermal - reactor fuel that has been recycled using pyroprocessing.

It could be stashed away for future use as fast - reactor fuel.

An Outdated Strategy Early nuclear engineers expected that the plutonium in the spent fuel of thermal reactors would be removed and then used in fast - neutron reactors, called fast breeders because they were designed to produce more plutonium than they consume.

Next they scrape the accumulated materials off the electrode, melt them down, cast them into an ingot and pass the ingot to a refabrication line for conversion into fast - reactor fuel.

We understand that their first fast reactors will use oxide or carbide fuel rather than metal — a less than optimum path, chosen presumably because the PUREX reprocessing technology is mature, whereas pyroprocessing has not yet been commercially demonstrated.

Fast reactors can thus minimize the risk that spent fuel from energy production would be used for weapons production, while providing a unique ability to squeeze the maximum energy out of nuclear fuel.

Fast reactors can extract more energy from nuclear fuel than thermal reactors do because their rapidly moving (higherenergy) neutrons cause atomic fi ssions more effi ciently than the slow thermal neutrons do.

Fast - neutron reactors could extract much more energy from recycled nuclear fuel, minimize the risks of weapons proliferation and markedly reduce the time nuclear waste must be isolated

In addition to its unique fuel cycle, the TerraPower design employs a high - temperature, liquid metal core cooling technology suited to a breeder reactor with «fast» neutron activity, rather than today's predominant reactors whose water cooling systems slow neutrons.

Fast reactors with an elegant ability to «breed» more fissile materials than they consumed in fuel, seemed destined to play a major part in helping the world to solve its energy needs.

Japan has pursued fast - breeder technology, through which a reactor can produce more plutonium than it burns in hopes of cutting or eliminating imports of nuclear fuel.

Rather than the pellets of uranium oxide used in other fast reactors and conventional reactors as fuel, GE would fabricate metal alloy fuels, with the plutonium or uranium mixed with zirconium metal.

One solution under consideration is to recycle the plutonium yet further — by using it as fuel in a pair of new, so - called «fast» reactors.

One attractive feature of fast reactors is that they can produce more fuel than they consume, avoiding the issue of the limited supplies of the uranium used in conventional nuclear reactors.

Even with a fleet of such fast reactors, nations would nonetheless require an ultimate home for radioactive waste, one reason that a 2010 M.I.T. report on spent nuclear fuel dismissed such fast reactors.

The Department of Atomic Energy will grow by a healthy 21 %, to $ 2.5 billion, with $ 61 million for the Indira Gandhi Centre for Atomic Research in Kalpakkam, possibly for development of a new fuel for the fast breeder reactor.

What's more, the ratio of ruthenium - 106 to the faster - decaying isotope ruthenium - 103, detected in smaller amounts last autumn, reveals that the fuel must have been removed from its reactor only a year or two earlier.

The world's first commercial - size fast reactor, the BN - 600 near Ekaterinburg in the central Urals, began operating in 1980 on a fuel of enriched uranium.

An optimized closed (fast - reactor) fuel cycle would recycle not just the uranium and plutonium but all actinides in the fuel, including neptunium, americium and curium.

PRISM is a high energy neutron (fast) reactor which uses a series of proven, safe and mature technologies to create an innovative solution to dispose of used nuclear fuel and surplus plutonium.

RIAR's reactors provide a full range of capabilities to test fuel and materials of all types of existing power reactors as well as advanced and innovative ones: water - cooled thermal reactors, including those with boiling and pressurized water, gas - cooled, fast and other types of reactors.

This means that the bonus neutrons can be used to breed new fuel in fast breeder reactors.

As an added bonus, many of the very long - lived nuclides larger than Uranium (Neptunium, Plutonium, Americium, Curium, etc.) have the same trend, and fast reactors can split and destroy these actinides as fuel rather than let them accumulate as in thermal reactors.

Also, recycling nuclear fuel (as is often but not always called for in fast reactor fuel cycles) brings up proliferation concerns that inspired the Jimmy Carter administration to cancel a large US effort to develop a fast - reactor system.

Another good reason to use hexagons is that fast reactors can become more reactive when fuel is pushed closer together.

«Unlike today's nuclear reactor, the IFR [integral fast reactor] can generate unlimited amounts of inexpensive clean power for hundreds of thousands of years... It provides an excellent solution for what to do with our nuclear waste because it can use our existing nuclear waste for fuel and it is significantly more proliferation - resistant than other methods of dealing with nuclear waste... The IFR is also inherently safe.

As a result, fast reactors have fuel requirements reduced by a factor of nearly 100.

Thus, liquid sodium is the coolant of choice in fast reactors because it can effectively transfer heat away from the nuclear fuel, while at the same time maximizing the number of fast neutrons.

Fast reactors on a closed fuel cycle use nearly all the actinides fed into them, while low energy reactors use only around one percent of the fuel.

One fact that Loewen pointed out that enabled greater fuel use by the PRISM (or any fast spectrum reactor) is that all neutron cross-sections are one Barn.

This requires very effective reactor and fuel cycle strategies, including fast reactors (FRs) and / or accelerator - driven, sub-critical systems.

PRISM is a high energy neutron (fast) reactor design which uses a series of proven, safe and mature technologies to provide an innovative solution to disposition plutonium stockpiles and harness the remaining energy potential of used nuclear fuel and surplus plutonium.

However, the long - term future of nuclear power will employ «fast» reactors, which utilize ∼ 99 % of the nuclear fuel and can «burn» nuclear waste and excess weapons material [243].

«Now these fast reactors — they can use all that depleted uranium for fuel.

The government noted Japan's basic energy policy - decided by the Cabinet in April 2014 - aims to promote the nuclear fuel cycle, including the promotion of fast reactor development.

In addition, the integral fast reactor can burn radioactive waste from other reactors and produce its own fuel.

My answer to the narrowed question: • Identify adaptation policies that can be implemented to reduce impacts of extreme weather events (which will happen with or without greenhouse driven global warming) • Research on nuclear energy to reduce the stigma of nuclear generation, e.g., fast reactors (Generation 4 reactors) or thorium fueled.

High temperature, fast neutron reactors are the obvious future source of both electricity and liquid fuels.

The TWR is a liquid sodium - cooled fast reactor that uses depleted or natural uranium as fuel.

Fast neutron reactors are typically fuelled using a mixture of oxides of uranium and plutonium, and can vastly increase the efficiency of the nuclear fuel cycle by using the uranium - 238 recovered from recycling nuclear fuel after use in conventional nuclear power reactors.

Fast reactors feature in Russia's long - term nuclear energy plans, which envisage a move to inherently safe nuclear plants using fast reactors with a closed fuel cycle and mixed - oxide (MOX) fFast reactors feature in Russia's long - term nuclear energy plans, which envisage a move to inherently safe nuclear plants using fast reactors with a closed fuel cycle and mixed - oxide (MOX) ffast reactors with a closed fuel cycle and mixed - oxide (MOX) fuel.

Replacement of the current thermal variety of nuclear fission reactors with nuclear fission fast reactors, which are 100 times more fuel efficient, can dramatically extend nuclear fuel reserves.

IFR was a sodium - cooled fast reactor with inherently - safe fuel rods made of «spent» fuel (article by Dr. Till).

And nuclear power is just as sustainable as any other power source — even if we only use conventional nuclear fast reactor designs, there is enough uranium in the oceans and on land (recoverable at prices that allow the fuel costs of fast reactors to remain the same as today — which is trivial) to last for 5 billlion years, the expected time remaining fo our sun.

http://www.world-nuclear-news.org/NP-China-plans-for-nuclear-growth-2011144.html Fast reactors — make maximum use of uranium resources by generating a certain amount more fuel than they consume — are seen as the main technology for China's long - term use of nuclear energy.