spent fuel

and that larger amounts of other radioactive material, from discarded X-ray machines to spent fuel, might be used to make a dirty bomb.

The threat comes within days of Pyongyang saying it had begun reprocessing spent fuel rods at its Yongbyon nuclear plant.

They did not even try to put water into the spent fuel pools for several days.

Some experts theorize the plutonium might have come from pools at the facility that hold spent fuel rods.

Meanwhile, Japan's Nuclear and Industrial Safety Agency said the spent fuel at the No. 4 reactor appeared to be immersed in water.

The nuclear safety agency said the spent fuel at the No. 4 reactor appeared to be immersed in water.

There was a radioactive release when water sloshed out of spent-fuel-cooling pools and spilled into the Sea of Japan.

He said Thick clouds of steam, thought to be from water evaporating in the spent fuel pool, is hampering their work.

The condition of the spent fuel pools has been a source of rising anxiety and confusion since the crisis began.

Evaporation in the cooling pools used for spent fuel rods led to the detonation of stored weapons-grade plutonium and uranium.

'The bottom line is that there clearly appears to be a challenge keeping that spent fuel filled with sufficient water, ' Mr. Jaczko said.

'The first thing you do is assure safe shut down of reactors and continued cooling of the reactor cores and the spent-fuel pool, ' he said.

These pools are used to warehouse spent fuel rods, which are no longer being used but remain highly radioactive and must also be cooled.

The Times initially reported that helicopters might be used to drop water on the pools of spent fuel that are too hot.

The design capacity of the spent fuel pool for the first and second nuclear power plant was not enough to store spent fuel.

A particular concern among nuclear experts: that Beijing's desire to reprocess spent fuel will hurt nuclear-nonproliferation efforts.

The coming review from the Nuclear Regulatory Commission is unlikely to put the issue of nuclear safety and spent-fuel pools to rest.

The operation was intended to help cool the reactors and also to replenish water in a storage pond with spent fuel rods.

Under the terms of the agreement, India and the United States would consent mutually to the reprocessing of spent fuel.

Deutch said reprocessed spent fuel must be transported with the greatest care to prevent any accidents or hijacking by terrorists.

Meanwhile, water trucks are now on standby to spray water on to a spent-fuel storage pond at reactor four, following fires there.

Authorities say the high levels might be from the spent fuel pool lined with reinforced concrete.

In reprocessing 95% of spent fuel can be recycled to be returned to usage in a power plant (4).

Cooling the spent fuel is critical, for if it becomes exposed, a zirconium fire can break out and spew massive amounts of radiation.

The equipment cooling water used in primary circuit loop and spent fuel system is provided by seawater cooler in nuclear power station.

Workers at the Fukushima Daiichi plant have been battling to cool reactors and spent fuel ponds to avoid a large-scale release of radiation.

The worst contamination so far has come mainly from fires in ponds where spent fuel rods are stored.

Monitors for the prediction of alternate nuclear material concentrations for pressurized water reactor spent fuel.

A reactive transport model for oxidation dissolution of spent fuel and release of nuclides within a defective canister.

Spent fuel tanks in the other buildings may also have been damaged by the hydrogen explosions.

The unmanned aircraft took photographs and could roughly gauge temperatures inside the damaged reactor and spent fuel buildings.

Officials worry that spent fuel rods stored at the site could heat up and release radioactive material.

Thus needs to be a re-definition of the spent fuel pool.

Thus, U. S. , pools hold only the oldest spent fuel, which is also the coolest in terms of temperature and radiation.

The IAEA also lacks data on the temperatures of the spent fuel pools of reactors 1, 3 and 4, he said.

Canada said it would return spent fuel to the United States.

Failure of the cooling system of nuclear reactors and spent fuel pool will not lead to a sudden rise in temperature.

Those drawing fuel would have to agree to strict verification and to return spent fuel for oversight.

Safe and economic disposal of HTR spent fuel elements is an important topic for HTR development.

Iran is to return the spent fuel rods for reprocessing in Russia under international safeguards.

Achieving the timely receipt of foreign research reactor spent fuel nuclear fuel at the Savannah river site.

At the Fukushima-1nuclear power plant, efforts continue to try to cool overheating reactor cores and spent fuel rodsandin tanks.

Project opalinus clay: radionuclide concentration limits in near-field of a repository for spent fuel and vitrified high-level waste.

In the meantime, spent fuel can be safely stored at the reactor sites in dry casks .

The pools, which sit atop the reactor buildings and are meant to keep spent fuel submerged in water, have lost their cooling systems.

The country has not achieved its goal of nuclear self-sufficiency by reprocessing spent fuel.

Spent nuclear fuel (SNF) project acceptance criteria for light water reactor spent fuel storage system.

Because the ponds are open to the atmosphere, radioactive material from the spent fuel spread straight into the environment.

That should, in theory, allow them to restart the pumps that supply cooling water both to the reactors and to the spent fuel ponds.

The focus of the emergency has switched from the reactors to spent fuel-storage ponds.

The US is stopping work on the Yucca mountain project - its only potential repository for spent fuel.

A typical spent fuel pool is kept at a temperature below 25 degrees Celsius under normal operating conditions.

And until it does, shooting spent fuel rods into space remains a very dangerous propositionindeed.

The concern focused in particular on overheating of the spent fuel rods .

Fukushima had a lot of used fuel in spent-fuel ponds, which keep it cool and absorb its radiation.

The status of the various spent fuel stashes is not clear, which is disturbing.

The most dangerous uranium at the plant is not in the reactor cores but in the 11, 195 spent fuel rods stored at the site.

Spent fuel storage developments in eastern Europe and former Soviet Union.

These include terrorism, what do we do with spent fuel? The pump-sump question.

Estimation of spent fuel compositions from light water reactors.

They switched to military fire engines to dowse the reactors and the pools of spent fuel rods beside them.

They switched to military fire engines to douse the reactors and the pools of spent fuel rods beside them.

Reprocessing the remaining spent fuel rods at Yongbyon would give it one more bomb.

Reactor operators calculate how long it would take, once cooling is lost, for the spent fuel to boil the water it sits in.

In any case, the internals will wait in four giant steel-and-concrete casks , alongside 60 other casks filled with spent fuel.

Instead it is filling up spent-fuel pools and then being shifted into dry casks, the steel-lined concrete silos.

The spent fuel pool is filled up with borated cooling water to shield the radiation.

A separate storage pool for spent fuel rods also is drawing the attention of some Tepco and safety officials.

In recent days, a new danger has emerged in the spent fuel pools adjacent to the reactors.

The Fukushima Daiichi plant has seven pools dedicated to spent fuel rods.

Reprocessing of spent fuel is expensive, but Chinese officials have promoted it because it would provide a steady fuel supply.

As a result, China is more closely examining its own spent-fuel procedures, Chinese nuclear experts say.

A new standard and design requirement is needed for the spent fuel pool.

At reactors No. 5 and No. 6, which were less severely damaged, a rise in temperature in the pools for spent fuel rods had worried officials.

Effects of earthquakes on the deep repository for spent fuel in Sweden based on case studies and preliminary model results.

Safety studies related to the spent fuel storage of the Romanian VVR-S reactor.

Effect of water radiolysis caused by dispersed radionuclides on oxidative dissolution of spent fuel in final repository.

The same risks, the Union of Concerned Scientists pointed out, exist in Reactors 5 and 6, which are also offline and store spent fuel rods.

If fuel rods or spent fuel gets too hot, it can explode or otherwise send radioactive matter into the air.

Reminded, because of a craft, very fast, if any things will make chicken freezing, to adhere until the spent fuel!

A video display, the Unit 3 spent fuel pool fell into a lot of debris, almost can not see the appearance of spent fuel.

Under the pact, Russia will supply the fuel for Bushehr and then take back the spent fuel rods.

The blast exposed the spent fuel rods stored there.

Work at the plant continued on Sunday to improve the water-pumping system that is attempting to keep the reactor and spent fuel rods cool.

That compares with a level of just 0. 01 becquerels or less for normal spent fuel pools .

It is critical that the spent fuel rods remain covered in water, otherwise they can emit lethal doses of radioactivity.

Of greatest concern are the spent fuel rods stored at reactor Nos. 3 and 4.

This type of waste makes up just 0. 3% of Britain's total volume of nuclear waste, which is mostly waste from spent fuel rods.

India, which has never signed the NPT, does not yet have any American-built reactors, let alone the spent fuel from them to reprocess.

Among them, the Tokyo Fire Department from 19 am to 20 pm Unit 3 spent fuel to the tank water over 13 hours continuously.

16 am, white smoke emerge near Unit 3, Tokyo Electric Power Company that is not spent fuel pool cooling state.

Then you have accidents in the spent fuel outside of containment. This is inside and this is outside.

For the next ten years, its uranium fuel (enriched to under 5%) will come from Russia too and the spent fuel will go back there.

Establishing Surveillance Test Program for Boron-Based Neutron Absorbing Material Systems for Use in Nuclear Spent Fuel Storage Racks

Standard Specification for Boron-Based Neutron Absorbing Material Systems for Use in Nuclear Spent Fuel Storage Racks

The Debate over the Dangers Posed by Sabotage of Spent Fuel Pools, and Possible Resulting Fires

Progress in Research of Spent Fuel Reprocessing and High-level Liquid Waste Partitioning Integrated Process

Numerical Analysis of Natural Convection Heat transfer in the Shielded Canister for the Spent Fuel

Characteristic Ratios of Light-Water Reactor Fuel and Reactor Type of Spent Fuel

Spent fuel transportation cask response to a tunnel fire scenario

Graphic simulation of remote handling operation in the advanced spent fuel conditioning process

Research and Evolution of Refractory Metal Employing in Spent Fuel Reprocessing Facility

Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management

Nuclear Conceptual Design of Spent Fuel Pool Reactor Loaded With Spent Fuels of Daya Bay Nuclear Power Station

Japanese perspectives and research on packaging, transport and storage of spent fuel

Immobilization of radioactive waste sludge from spent fuel storage pool

Studies on Controlling Trend of Tc in Scrubbing Extractor of Spent Fuel Reprocessing

Response of spent fuel transportation casks to explosive loadings

Determination of Zr in the Simulated Process Solution of Spent Fuel Reprocessing

The Disposal of Spent Fuel and High Level Waste - Technical Considerations

Behaviour of spent fuel assemblies during extended storage;

Exponential experiments on PWR spent fuel assemblies

Decontamination of Spent Fuel Dissolution Tank

Development of high-strength aluminum alloys for basket in transport and storage cask for high burn-up spent fuel

Crud in the Solvent Extraction Process for Spent Fuel Reprocessing

copyright englishtang 5, 6 Unit: reactor spent fuel pool temperature with a slight increase english tang . com

Subcriticality measurements in PWR spent fuel pit PWR

Trunnions for spent fuel element shipping casks

Design Criteria for Consolidation of LWR Spent Fuel

He blames TEPCO for storing too much spent fuel on the site;

Safety Analysis of NPP Spent Fuel Pit When Losing of Final Heat Trap

spent fuel (-element) handling cell

Development of new type concrete for spent fuel storage cask

Development of Cover Seal Mechanism of Spent Fuel Element Shipping Cask in 10 MW High-Temperature Gas-Cooled Reactor

Nuclear Safety Evaluation on High Density Spent Fuel Racking in LNPS

Final Disposal of HTR Spent Fuel Elements

Development of transport and storage cask for high burn-up spent fuel

Leak testing of spent fuel pit

Unit 4: 15 fire, the reactor spent fuel storage pool may be hydrogen explosion occurred. 16, and then fire Eng lishtang. com