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2011年4月14日星期四

Japanese researchers closer to moving plant nuclear

A new glitch in the cooling of spent nuclear plant fuel crippled the Japan has prompted a surge of radiation, but a general decline in leaks allowed police Thursday to search for missing of the victims of the tsunami more closely to the complex than ever before.

Pickled protective policing a radius of 10 kilometres on the Fukushima Daiichi for the first time Thursday in their search for thousands of missing victims even after the March 11 earthquake and the tsunami.

A steel fence is installed to cover a gate to prevent the spread of radioactive water at an intake canal at the Fukushima Daiichi nuclear power plant in this photo taken Tuesday. A steel fence is installed to cover a door to prevent the spread of radioactive water in the canal of contribution to the Fukushima Daiichi nuclear power in this photo taken Tuesday. TEPCO/Reuters "we must work very carefully to avoid rip our combinations of radiation with debris, metal and pieces of concrete scattered around the area" a police officer who gave only his nickname, Sato, said in a telephone interview.

Although Japanese authorities have insisted that the improvement of the situation to the crippled plant, the crisis has dragged on, accompanied by a nearly nonstop series of misadventures and replicas of the 9.0 magnitude earthquake that hampered debris clearing work and restoring the plant disabled cooling systems.

A Japan recognized this week the total radioactivity of leak already has catapulted the crisis in the greater severity internationally, on an equal footing with Chernobyl, although always involving only one-tenth of the radioactivity emitted in this disaster of 1986.

Police in white suit, delicately picked through rubble near the plant in an area where up to 1,000 organizations would be filed in tsunami debris, said Sato. Overall, more than 26 000 people would have died on 11 March, although only approximately 11,250 bodies have been recovered so far.

"Many families have asked for their close disappeared." I want to recover the body as quickly as possible and to return to their families, "says.

Glitch this week at the plant involved falling levels of water in the pool for the bars of irradiated fuel in the building of reactor unit 4.

Water sprayed inadvertently in a tank overflow prompted a false that the main pool was full when he was not reading. That prompted the workers to suspend the injection water in the main basin for several days until Wednesday, when resumption of spraying.

Also, strong aftershocks could affect reading, said responsible.

The suspension of spraying allowed temperature and radiation levels to rise, if rods were believed still to be covered with water, said Hidehiko Nishiyama Japanese nuclear and industrial safety agency.

"I believe that the fuel in the pool bars are largely intact, or to keep the normal form of what they should look like," said Nishiyama. "If they were fully involved, we would have considered different sets of numbers of sampling water."

A new burst of radiation leaks this week in the pool of fuel of Unit 4 suggests damage to the fuel rods and complicates efforts to stabilize the said officials. TEPCO Manager Junichi Matsumoto, has said the analysis of the water of the swimming pool has detected higher levels of radioactive iodine 131, cesium-134 and caesium-137. Normally, these elements would not be found in the swimming pool.

Three of the reactors have also approximately 20,000 metric tonnes of stagnant water, contaminated by radiation and it is difficult to reduce spilling reactors, Nishiyama said.

Workers operate a modified Putzmeister 70Z, the world's largest concrete pump mounted on a truck, to pump contaminated water from the No.4 reactor at Fukushima Daiichi nuclear power plant .Workers operate a modified Putzmeister 70Z, most large concrete pump mounted on a truck, world for pumping contaminated water from the reactor No. 4 at the Fukushima Daiichi nuclear power. TEPCO/ReutersUntil cooling systems can be fully restored, flooding the engines with water are the only way to prevent overheating, but these many tons of water, of radioactivity, are a distinct threat.

"This is the problem to be stuck with reactors which must constantly be fed with water", Nishiyama said. Setbacks in the preparation of the tanks for storing contaminated water mean new options can be considered, he said. It was not specified.

The operator of plant at Bay, Tokyo Electric Power Co., or TEPCO, is looking for ways to finally remove fuel rods from storage pools reactor that the plant is closed for good. The unit 4 glitch makes these more urgent plans.

Finally the stems must be stored permanently in dry casks, radiation-resistant, but this process is far away, he said.

Meanwhile, TEPCO, works to stabilize conditions at the No. 1 engine of the plant by pumping of nitrogen in its containment vessel to reduce the risk of explosion of hydrogen. He is also install plates of steel and the screens of silt along the coast to help reduce radiation leaks into the sea.

Hesitant progress at the plant have deepened the misery of residents who were forced to leave their homes and jobs near Fukushima Daiichi.

A 102-year-old man committed suicide Tuesday, a day after the Government includes Iitate village where he lived all his life, as an area to be evacuated to avoid exposure to radiation. A local police official, who refused to be named because he was not allowed to speak to the media, confirmed the man had killed himself but would give no further details.

About 140,000 people still live in shelters after losing their homes or be advised to evacuate their nuclear crisis and disaster on 11 March.

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Japanese Plant operators Brace for the continuation of aftershocks - voice of America

VOA News, April 14, 2011 The crippled Fukushima Daiichi Nuclear Power plant is seen in Fukushima Prefecture in this undated handout photo released by Tokyo Electric Power Co, 14 Apr 2011 the crippled Central Fukushima Daiichi nuclear is perceived in Fukushima Prefecture in this undated photo released by Tokyo Electric Power Co, April 14, 2011

The operators of the nuclear plant of Fukushima at the Japan say that they will be equipment for land higher after a series of strong aftershocks that have impeded efforts to repair the paralyzed installation.

The last strong earthquake came at about 6 o'clock in the morning, local time Thursday, with a magnitude of 6.1. It is the fourth aftershock since Monday with a magnitude of 6 or more and the 14th with a magnitude greater than 5. Hundreds of aftershocks have rattled - northeast coast of the Japan since the earthquake of 9.0 massive and tsunami March 11 which eliminated the plant cooling systems.

Officials with the Tokyo Electric Power Company, said Thursday they are strengthening the national electrical network connections to ensure that they have the power to pump water in the plant reactors and cooling ponds. A spokesman said generators and other equipment are transferred to a higher ground to protect themselves against another tsunami.

Workers at the plant are also seeking a way to remove the fuel rods irradiated in a pond in storage at the reactor number 4 of the plant, where high radiation levels were detected in the water. Officials, said Wednesday that radiation levels suggest that some of the stems were damaged, although most are probably intact.

Technicians were able to more than 250 tons of water highly radioactive from tunnel side of the pump power reactors on Wednesday, an essential step before that they can return to work on the repair of vital unit cooling systems. But NHK Japanese television said the water level in the tunnel had increased again Thursday morning, suggesting that the water is still leaks in the tunnel of the reactor.

NHK cited by the representatives of the factory as saying radiation levels in the Ocean near the factory have dropped dramatically since a leak was plugged last week, but are still high. The last reading found radioactive iodine to 2500 limit legal, compared to 7.5 million times the limit on 2 April.

The network also reported that recent Health Department tests found radiation 25 times the legal limit in fish caught in the South of the nuclear power plant Wednesday, and this radioactivity has been detected on 11 kinds of vegetables in Fukushima Monday Prefecture.

The number of victims of the March 11 disaster continues to increase, with the Agency of the national police of Japan reports more than 13,300 confirmed dead and more than 15 000 missing.

Press Agency Kyodo du Japan said many of the victims is dead when the officially designated evacuation sites were submerged or washed away by the tsunami, who has been raised as a three-storey building when it struck the coast. The Agency said it has identified more than 100 sites of evacuation is not to resist the wave.

Some information for this report provided by AP.

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2011年4月9日星期六

Debris Japanese tsunami to reach the West Coast in 2014

A giant mass of floating debris, washed away by the Japanese tsunami in the ocean could reach the West Coast in three years, the University of Hawaii researchers predict.

In accordance with the modeling by Nikolai Maximenko and Jan Hafner at the International Centre of research of the University of Hawaii Pacific, the trash could reach main island of Hawaii in March 2013, before finally washing ashore on the West Coast in 2014.

Observers in the region have already seen the entire buildings, boats and cars floating off the coast of the East of the Japan. Experts say that storms will be debris more fragile apart likely break, but more robust features, such as boats, could reach the intact beaches.

This photo provided by the U.S. Navy shows an aerial view of debris Sunday, March 13, 2011 from an earthquake and subsequent tsunami that struck northern Japan. This photo provided by the U.S. Navy shows an aerial view of debris Sunday, 13 March 2011 an earthquake and subsequent tsunami that struck the North of the Japan. Press of marine/partners Alexander Tidd/U.S.

"In a year, the Northwestern Hawaiian Islands Marine National Monument will be see parts washing up on its shores." In two years, the Hawaiian Islands remaining will see some of the effects, "the researchers said on its Web site.

"In three years, the plume will reach the US West Coast, dumping of debris on the California beaches and beaches of British Colombia of Alaska and Baja California." The debris will then join the famous North Pacific garbage patch, where he to walk in and break up into smaller and smaller pieces, "they said."

"In five years, shores of Hawaii can expect to see another dam of debris which is stronger and more durable than the first." Much of the debris leaving the North Pacific garbage patch ends up reefs and beaches of Hawaii. ?

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