Sentences with phrase «melted nuclear fuel»

The government has no gauges to measure the escaped and melted nuclear fuel, dripping somewhere below the reactor.

In addition, if the melted nuclear fuel proves bad enough — like Chernobyl's lethal mass of molten core known as the «elephant's foot» — it will have to be entombed for a number of years rather than removed, because of radiation risk from what is essentially a cooled shell of ceramic armor surrounding a highly radioactive core that remains hot and is still undergoing radioactive decay.

There is radioactive rubble to contain or dispose of, undamaged fuel rods to be safely removed (and discarded), and an unknown amount of melted nuclear fuel to contain.

Roboticists are making halting progress in developing machines for specific tasks, such as decontaminating and removing melted nuclear fuel masses, but they know that their creations need to be adaptable.

The Fukushima plant is crowded with 10 - meter - tall tanks storing tainted water used to cool melted nuclear fuel masses and groundwater that infiltrated the site — some 750,000 tons in all.

Last year managers agreed to a road map for decommissioning the site over the next 30 to 40 years that calls for removing melted nuclear fuel masses and demolishing the plant's four reactor halls at a cost that could top $ 9 billion.

Not exact matches

At this point, it was unclear exactly what the condition is of the melted down nuclear fuel in Units 1, 2 and 3.

A year later, all the nuclear fuel is now cooled enough that it can no longer boil water, or melt down.

Nuclear fuel rods began melting and volatile hydrogen gas built up.

Ex-up, or ex-vessel, means, in the jargon of the nuclear trade, melted down nuclear fuel that has burned its way out of the reactor.

To try to confirm the location and condition of the melted fuel, the International Research Institute for Nuclear Decommissioning, set up by TEPCO and other entities, has been probing the reactors» innards with muons.

The accident could have blocked the flow of coolant gas and caused the fuel in one of the reactor's 6156 channels to melt and leak radioactivity, but it was 9 hours before Nuclear Electric decided to shut down the reactor.

What remains unclear is how much of the nuclear fuel at any of the three Fukushima Daiichi reactors has melted down, though TEPCO has announced that the fuel is likely damaged in all three reactors that were operating there at the time of the earthquake.

Lake Barrett — director of the Three Mile Island nuclear plant during its decommissioning after a partial meltdown at the Middletown, Pa., facility in 1979 — says TEPCO will use robots to remotely dig out the melted fuel and store it in canisters on - site before shipping to its final disposal spot.

Tokyo Electric Power Company now says that the nuclear fuel rods fully melted down in Fukushima reactor number one and burned a hole in the thick steel vessel surrounding them.

During a nuclear meltdown, uranium dioxide fuel, fuel rod components and even the reactor become superheated — as much as 3,600 degrees Fahrenheit — and melt together to form corium, which can eat through containment systems.

Within three hours the nuclear fuel had boiled itself dry and then burst through its zirconium cladding before beginning to melt inside the reactor.

And within a century after that, melting could begin to release waste stored at the camp, including sewage, diesel fuel, persistent organic pollutants like PCBs, and radiological waste from the camp's nuclear generator, which was removed during decommissioning.

Unraveling the mysteries surrounding the # 4 pool will require discovering why water levels there fell so quickly and whether the 230 tons of spent nuclear fuel melted in addition to catching on fire.

They found the fuel rods totally melted down, and some nuclear fuel escaped from the reactor.

-- Climate impacts: global temperatures, ice cap melting, ocean currents, ENSO, volcanic impacts, tipping points, severe weather events — Environment impacts: ecosystem changes, disease vectors, coastal flooding, marine ecosystem, agricultural system — Government actions: US political views, world - wide political views, carbon tax / cap - and - trade restrictions, state and city efforts — Reducing GHGs: + electric power systems: fossil fuel use, conservation, solar, wind, geothermal, nuclear, tidal, other + transportation sector: conservation, mass transit, high speed rail, air travel, auto / truck (mileage issues, PHEVs, EVs, biofuels, hydrogen) + architectural structure design: home / office energy use, home / office conservation, passive solar, other

According to the Houston Chronicle, Hyperion Power Generation (HPG) has commercialized a nuclear «battery» that runs of low grade, proliferation - proof uranium hydride fuel that can't melt down, that produces enough electricity for 20,000 homes, and is small enough that it can be sealed at the factory and then shipped on a big truck to it's operational site.

Five years after the Fukushima nuclear meltdown, the site still teems with 7,000 workers attempting to contain its radioactive water and debris, while radiation remains hot enough to fry the wiring in robots ferreting out melted fuel rods.

Fuel rods became exposed and began to melt, while generating large amounts of hydrogen from the rapid oxidation of zirconium contained in the cladding surrounding the nuclear fFuel rods became exposed and began to melt, while generating large amounts of hydrogen from the rapid oxidation of zirconium contained in the cladding surrounding the nuclear fuelfuel.