Sentences with phrase «reactor fuels»

Found naturally only in trace quantities and seminal to alternate nuclear reactor fuels, protactinium is an extremely rare element that could reveal new trends among nearby actinide elements, including uranium.

The visit highlighted specific opportunities for Canada - India civil nuclear co-operation beyond the commercial exchange of reactor fuel

The visit highlighted specific opportunities for Canada - India civil nuclear co-operation beyond the commercial exchange of reactor fuelFirst, the visit highlighted specific opportunities for Canada - India civil nuclear co-operation beyond the commercial exchange of reactor fuel.

Japan's nuclear plant crisis with the radioactivity contamination from spent fuel pools is likely to put an overdue spotlight on stalemated U.S. policies for managing reactor fuel, authors of a Massachusetts Institute of Technology report on the nuclear fuel cycle said yesterday.

Spent reactor fuel may be either a waste or a resource, and it may take decades to find out which is true, the report authors conclude.

MIT physics professor Ernest Moniz, director of the MIT Energy Initiative and co-chairman of the spent fuel study, said that until now, U.S. policy on the disposition of spent reactor fuel has been an «afterthought.»

Reactor No. 3 at the Fukushima Daiichi station runs on so - called mixed oxide (MOX) fuel, in which uranium is mixed with other fissile materials such as plutonium from spent reactor fuel or from decommissioned nuclear weapons.

Notably, that schedule is reasonably compatible with the planned timetable for shipment of spent thermal - reactor fuel to Yucca Mountain.

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

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.

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.

An initial plan to entomb the wreck in concrete was abandoned, says Praaning, when Russian scientists found it would increase pressure on the reactor fuel to levels that could trigger an explosion.

With 436 reactors worldwide consuming 65,000 metric tons (one metric ton equals 1.1 U.S. tons) of enriched uranium per year, demand for this nuclear reactor fuel outstrips available supply, which has caused uranium prices to jump from a low of $ 10 per pound a few years ago to more than $ 130 per pound in 2007 and still more than $ 50 per pound today.

Natural circulation in the reactor alone is enough to remove all the heat generated by the radioactive decay of the elements in the reactor fuel.

Light water - cooled graphite - moderated reactors Fuelled by low - enriched uranium oxide, these reactors use graphite as a moderator and water to cool the core.

To implement the PMDA, the United States has been building a mixed oxide (MOX) fuel fabrication facility to convert the plutonium into nuclear reactor fuel.

The Japanese government's Science and Technology Agency wants Japanese and Russian scientists to collaborate on the development of a new generation of reactors fuelled by plutonium.

Research reactor fuel, transuranic waste and sterilization capsules such as the Cesium Chloride capsules stored at the Hanford site.

HI - STAR 60's loaded weight is approximately 60 tons which makes it the only cask for light water reactor fuel shippable by truck in Holtec's fleet at this time.

Use of standard LWR fuel allows leveraging extensive experience and infrastructure for the storage, handling, and shipment of spent reactor fuel.

The plant will also host the Encapsulation Repository Facility where spent reactor fuel will be placed in iron and copper lined canisters that weigh 27 metric tonnes and will be embedded 500 meters into granite bedrock.

Instead, the price rise seems to reflect the increasing importance of the secondary, or pre-mined and processed market, as sources of uranium for use in the reactor fuel market.

HEU can be blended with other forms of uranium in a series of complex technologies that result in dilution of the concentration of U-235 from the 90 % range in HEU down to the three to five percent used in reactor fuel.

The use of uranium enrichment tailings for reactor fuel through the «re-enrichment» of UET is not yet a significant world source of uranium for reactor fuel, except in the Russian Federation.

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.

«Highly enriched uranium» (HEU) is made for use in nuclear weapons and is created when the content of uranium - 235 (U-235), the isotope of uranium that is fissionable and therefore necessary to make nuclear weapons and nuclear reactor fuel, is enriched.

Other «secondary sources» of uranium include uranium previously processed to make nuclear weapons cores or reactor fuel, but never consumed.

Through a multi-step process in Russia, the bomb - grade uranium material was converted into a different chemical form and then diluted into low enriched uranium suitable for use in fabricating commercial nuclear power reactor fuel.

Some types of uranium reactor fuel could in theory be useful in weapons, while plutonium - also theoretically useful for weaponry - is created during operation.

Opportunities exist for the diversion of weapons - usable material at the front end of the fuel cycle, during which natural uranium is enriched to make reactor fuel.

Reprocessing and the use of plutonium as reactor fuel are also far more expensive than using uranium fuel and disposing of the spent fuel directly.

The fuel pellets in reactor fuel rods can be recycled.

France and Japan, on the other hand, routinely extract and reprocess plutonium for reuse as reactor fuel, but the dual - use potential of this process has led Holdren and his coauthors to recommend a «once - through fuel cycle» in which the spent fuel is not reprocessed, but instead goes directly into a storage repository.

Used reactor fuel remains extremely hot for hundreds of years and radioactive for thousands of years.

«France's decision to reprocess reactor fuel has contaminated the seas as far as the Artic Circle and may have led to leukemia clusters near the reprocessing plant.

Not exact matches

Moreover, it should take even less fuel than a fission reactor does to produce a lot of energy.

Thus mini-nuclear reactors, algae - based fuels, and various other exciting schemes are routinely trotted out as the «source of unlimited energy in the near future,» always with the implicit faith that the process can be scaled up from the laboratory to a global scale with only modest difficulties.

However, when asked to comment, one CEO said Canada is in a strong position because Candu reactors use heavy water instead of boiled or pressurized water, which allows the reactor to run on natural uranium instead of enriched uranium fuel.

To use MOX fuel rods, civilian power plants would have to modify their reactors, requiring lengthy relicensing by the Nuclear Regulatory Commission.

In addition, the Energy Department has to approve the transfer of technology related to nuclear reactors and fuel.

No U.S. civilian reactor had ever used MOX as fuel.

Under an agreement with Russia, the United States was to convert 34 metric tons of plutonium into fuel for civilian reactors that generate electricity.

ALBUQUERQUE, N.M. — A plan to temporarily store tons of spent fuel from U.S. commercial nuclear reactors in New Mexico is drawing fire from critics who say the federal government needs to consider more alternatives.

For example, Vogt says that the General Fusion reactor must run on a constant stream of tritium, the fuel for the fusion reaction.

General Atomics has received two awards from the U.S. Department of Energy totaling more than $ 3.26 million to continue the San Diego - based company's work on developing new types of fuel for advanced nuclear reactors.

The idea is basically the same; there are a huge number of nuclear reactors under construction around the world, and major suppliers of their fuel are slashing production.

We are going to be sorry that we tolerated the Bushewhr reactor to be fueled when Iran uses one of their new toys on us.

The Federal Nuclear Waste Policy Act has mandated that deep - mine disposal of high - level radioactive effluent and spent fuel rods from nuclear reactors commence by 1998, but states with proposed geological sites are screaming foul.

It is commonly recognized that the radioactivity and extreme toxicity of nuclear reactor postfission effluent and spent fuel rods constitute a hazard to human health and safety.