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By Mayumi Negishi
cheap Canada Goose TOKYO, April 27 (Reuters) Japanese engineers are struggling to gain control of the Fukushima Daiichi nuclear power plant, 240 km (150 miles) north canada goose clearance of Tokyo, which was seriously damaged by the March 11 earthquake and tsunami. cheap Canada Goose
Two of the six reactors at the plant, operated by Tokyo Electric canada goose coats on sale Power Co (TEPCO), are considered stable but the other four are volatile.
canada goose clearance sale Following are some questions and answers about efforts to end the world worst nuclear crisis since the 1986 Chernobyl accident: canada goose clearance sale
canada goose clearance WHAT IS HAPPENING? Workers are trying to fill the reactors with enough water to bring the nuclear fuel rods inside to a shutdown in which the water cooling them is below 100 degrees Celsius and the reactors are considered stable. canada goose clearance
TEPCO has been pouring water into the reactor vessels containing the rods since the disaster to cool them as an emergency measure. [ID:nL3E7FI0C7]
Canada Goose Parka In a further step towards a cold shutdown, Canada Goose Jackets TEPCO is filling the containment vessel an outer shell of steel and concrete that houses the reactor uk canada goose outlet vessel with water in a procedure called water entombment. It has started canada goose by increasing the amount of water being poured into the No.1 reactor. Canada Goose Parka
Canada Goose sale At the canada goose black friday sale same time it will work to restore the reactors cooling system, which functions like a radiator on an https://www.radondenvercolorado.com automobile. TEPCO said mounting a separate cooling system externally was also Canada Goose online a possibility. Canada Goose sale
For reactors like No.2, which is suspected of having a damaged containment vessel, TEPCO said it hopes to seal the damaged sections with cement to prevent the water being pumped in from leaking out.
canada goose black friday sale WHAT IS HAMPERING OPERATIONS? The canada goose store large amounts of runoff from the water TEPCO has been pumping in to prevent overheating of fuel rods and a nuclear meltdown. The operator estimates the amount of contaminated water at the Daiichi plant at around 87,500 tonnes. canada goose black friday sale
Canada Goose Outlet TEPCO plans to start operating in June a system to treat this contaminated water. firm Kurion, would adsorb and isolate radioactive elements, then the treated water would be re used to cool down the reactors. Canada Goose Outlet
The isolated radioactive materials would remain in the nuclear canada goose uk shop plant for now.
Canada Goose Jackets For the time being, TEPCO has been transferring radioactive water that has accumulated at the reactor Canada Goose Online buildings into tanks and storage areas at the plant, but the process has been progressing very slowly. That has since stopped but could resume if they run out of storage space again. Canada Goose Jackets
canada goose coats on sale In the meantime, radiation continues to seep out of TEPCO nuclear complex into the sea and uk canada goose into canada goose clearance sale the air, although at far lower levels than at the peak of the crisis in mid March. canada goose coats on sale
canada goose coats To contain cheap canada goose uk contamination, workers have tried pouring liquid glass to stop a leak and spraying the ground with sticky resin to capture radiated dust. They are also injecting nitrogen into canada goose coats
canada goose store to prevent new hydrogen explosions which would spread highly radioactive material into the air. canada goose store
canada goose deals HOW LONG MIGHT THIS TAKE? On April 17 TEPCO announced a timetable for its operations. Within the first three months it plans to cool the reactors and the spent fuel stored in some of them to a stable level and reduce the leakage of radiation. [ID:nL3E7FH03J] canada goose deals
TEPCO then hopes canadian goose jacket to bring the reactors to a cold shutdown in another three to six months.
But some experts said the process could take longer. TEPCO itself said constant aftershocks, power outages, high levels of radiation and the threat of hydrogen explosions were factors that could hamper its work.
Canada Goose online Weather conditions, such as the approaching rainy season Canada Goose Outlet and typhoons and lightning during the summer, could also pose problems. Canada Goose online
buy canada goose jacket cheap WHAT ARE THE RISKS? The main risk is radiation continuing to seep, or burst, out each time a pipe leaks or rising pressure forces workers Canada Goose Coats On Sale to vent steam. Leaking water from within the nuclear pressure vessels could find its way into soil and the ocean, while spikes in radiation could contaminate crops over a wide area. buy canada goose jacket cheap
canada goose The risk that the spent fuel pools could go into a Canada Goose Parka chain reaction is low, buy canada goose jacket cheap as long as temperature indicators are accurate. But some more buy canada goose jacket of the contaminated runoff may have to be dumped into the sea, if workers run out of space to store the water. canada goose
canadian goose jacket There is also a small risk of a corium steam explosion, particularly in canada goose coats the No.1 reactor, which is the plant oldest and which is believed to have a weak spot. canadian goose jacket
If workers are unable to continue hosing operations, and if the nuclear fuel manages to melt through the bottom of cheap Canada Goose the reactor and fall into a water pool below, this would result in a burst of high temperature and a sudden release of a huge amount of hydrogen explosion that could breach the containment vessel.
Should either worst case scenario happen, canada goose uk black canada goose outlet friday high levels of radiation Canada Goose sale up to 20 km (12 miles) around the site could be dispersed, making it impossible to bring the reactors to a cold shutdown without great sacrifice.
WILL THE SITE BECOME A NO MAN LAND?
Most likely, yes. Even after a canada goose uk outlet cold shutdown there are tonnes of nuclear waste sitting at the site of the nuclear reactors.