Japan's Prime Minister Naoto Kan reacts during the Upper House Budget Committee in Tokyo Tuesday, March 29, 2011.
In this photo taken Thursday March 24, 2011, Chinese officials at the Rizhao Entry-Exit Inspection and Quarantine Bureau take samples of mackerel imported from Japan for radiation test in Rizhao in eastern China's Shandong province. China joined several countries on Friday, barring imports of dairy products, fruit, vegetables, and aquatic products, from five prefectures affected by radiation from the damaged nuclear plant _ Fukushima, Ibaraki, Gunma, Tochigi, and Chiba.
Tokyo Metro Police officers in protective suites search for missing residents at the site of a giant tsunami triggered by the March 11 earthquake in Minamisoma, Fukushima Prefecture, Japan, Monday, March 28, 2011.
Tokyo Metro Police officers in protective suites search for missing residents at the site of a giant tsunami triggered by the March 11 earthquake in Minamisoma, Fukushima Prefecture, Japan, Monday, March 28, 2011.
Reiko Kikuta, right, and her husband Takeshi Kikuta stand on the port as workers attempt to attach ropes to their submerged home to try to pull it ashore with construction equipment on Oshima Island in northeastern Japan Monday, March 28, 2011.
Reiko Kikuta, right, and her husband Takeshi Kikuta stand on the port as workers attempt to attach ropes to their submerged home to try to pull it ashore with construction equipment on Oshima Island in northeastern Japan Monday, March 28, 2011.
A survivor cuts woods for fire to warm at a shelter in the devastated town of Yamamoto, Miyagi Prefecture, northeastern Japan, Monday, March 28, 2011. The March 11 quake off Japan's northeast coast triggered a tsunami that barreled onshore and disabled the Fukushima nuclear complex.
A survivor cuts woods for fire to warm at a shelter in the devastated town of Yamamoto, Miyagi Prefecture, northeastern Japan, Monday, March 28, 2011. The March 11 quake off Japan's northeast coast triggered a tsunami that barreled onshore and disabled the Fukushima nuclear complex.
A floating crane is used to remove debris from the port at Oshima island in northeastern Japan Monday, March 28, 2011, following the March 11 earthquake and tsunami.
A floating crane is used to remove debris from the port at Oshima island in northeastern Japan Monday, March 28, 2011, following the March 11 earthquake and tsunami.
A man strolls with his dog at a gateway at the entrance to a Shinto shrine damaged by the March 11 earthquake and tsunami at in Yamamoto, Miyagi Prefecture, northeastern Japan, Monday, March 28, 2011.
A man strolls with his dog at a gateway at the entrance to a Shinto shrine damaged by the March 11 earthquake and tsunami at in Yamamoto, Miyagi Prefecture, northeastern Japan, Monday, March 28, 2011.
A resident of Oshima island of pushes a wheel barrow past the destroyed port as he tries to salvage belongings from his home in northeastern Japan Monday, March 28, 2011, following the March 11 earthquake and tsunami.
A resident of Oshima island of pushes a wheel barrow past the destroyed port as he tries to salvage belongings from his home in northeastern Japan Monday, March 28, 2011, following the March 11 earthquake and tsunami.
Evacuees from Fukushima Prefecture, northeastern Japan, where the troubled Fukushima Dai-ichi nuclear power plant is located, have a lunch at an evacuation center in Saitama, near Tokyo, Monday, March 28, 2011. The March 11 earthquake off Japan's northeast coast triggered a tsunami that barreled onshore and disabled the nuclear plant.
Evacuees from Fukushima Prefecture, northeastern Japan, where the troubled Fukushima Dai-ichi nuclear power plant is located, have a lunch at an evacuation center in Saitama, near Tokyo, Monday, March 28, 2011. The March 11 earthquake off Japan's northeast coast triggered a tsunami that barreled onshore and disabled the nuclear plant.
A family evacuated from Iwaki, Fukushima Prefecture, where the troubled Fukushima Dai-ichi nuclear power plant is located, carries their belongings at an evacuation center in Saitama, near Tokyo, Monday, March 28, 2011. The March 11 earthquake off Japan's northeast coast triggered a tsunami that barreled onshore and disabled the nuclear plant.
A family evacuated from Iwaki, Fukushima Prefecture, where the troubled Fukushima Dai-ichi nuclear power plant is located, carries their belongings at an evacuation center in Saitama, near Tokyo, Monday, March 28, 2011. The March 11 earthquake off Japan's northeast coast triggered a tsunami that barreled onshore and disabled the nuclear plant.
Japan's prime minister insisted Tuesday that the country was on "maximum alert" to bring its nuclear crisis under control, but the spread of radiation raised concerns about the ability of experts to stabilize the crippled reactor complex.
Prime Minister Naoto Kan told parliament that Japan was grappling with its worst problems since World War II.
"This quake, tsunami and the nuclear accident are the biggest crises for Japan" in decades, said the wan but resolute Kan, dressed in one of the blue work jackets that have become ubiquitous among bureaucrats since the tsunami. He said the crises remained unpredictable, but added: "We will continue to handle it in a state of maximum alert."
The magnitude-9.0 offshore earthquake on March 11 triggered a tsunami that slammed minutes later into Japan's northeast, wiping out towns and knocking out power and backup systems at the coastal Fukushima Dai-ichi nuclear power plant.
Police said more than 11,000 bodies have been recovered, but the final death toll is expected to exceed 18,000. Hundreds of thousands remain homeless, their homes and livelihoods destroyed. Damage could amount to $310 billion ? the most expensive natural disaster on record, the government said.
Against the backdrop of the humanitarian disaster, the drama at the power plant has unfolded, with workers fighting fires, explosions, radiation scares and miscalculations in the frantic bid to prevent a complete meltdown.
The plant has been leaking radiation that has made its way into vegetables, raw milk and tap water as far away as Tokyo. Residents within 12 miles (20 kilometers) of the plant were ordered to leave and some nations banned the imports of food products from the Fukushima region.
Highly toxic plutonium was the latest contaminant found seeping into the soil outside the plant, Tokyo Electric Power Co. said.
Safety officials said the amounts did not pose a risk to humans, but they said the finding supports suspicions that dangerously radioactive water is leaking from damaged nuclear fuel rods.
"The situation is very grave," Chief Cabinet Secretary Yukio Edano told reporters Tuesday. "We are doing our utmost to contain the damage."
Kan, meanwhile, faced stinging criticism from opposition lawmakers over the handling of a nuclear disaster stretching into a third week.
"We cannot let you handle the crisis," lawmaker Yosuke Isozaki said in parliament. "We cannot let you be in charge of Japan's crisis management."
Edano admitted Tuesday that Japanese safety standards were not enough to protect the complex against the tsunami's power.
"Our preparedness was not sufficient," Edano told reporters. "When the current crisis is over, we must examine the accident closely and thoroughly review" safety standards.
An AP investigation following the tsunami found that TEPCO officials had dismissed scientific evidence and geological history that indicated that a massive earthquake ? and subsequent tsunami ? was far more likely than they believed.
The plant was pounded by water far higher and stronger than the complex was prepared to endure, the investigation found.
The urgent mission to stabilize the Fukushima plant has been fraught with setbacks.
Workers succeeded last week in reconnecting some parts of the plant to the power grid. But as they pumped water into units to cool the reactors down, they discovered pools of contaminated water in numerous spots, including the basements of several buildings and in tunnels outside them.
The contaminated water has been emitting radiation exposures more than four times the amount the government considers safe for workers and must be pumped out before electricity can be restored to the cooling system.
That has left officials struggling with two crucial but sometimes-contradictory efforts: pumping in water to keep the fuel rods cool and pumping out contaminated water and safely storing it.
Nuclear safety official Hidehiko Nishiyama said cooling the reactors had taken precedence over concerns about leakage.
"The removal of the contaminated water is the most urgent task now, and hopefully we can adjust the amount of cooling water going in," he said, adding that workers were building sandbag dikes to keep contaminated water from seeping into the soil outside.
The discovery of plutonium, released from fuel rods only when temperatures are extremely high, confirms the severity of the damage, Nishiyama said.
Plutonium is a highly toxic substance which breaks down very slowly, remaining dangerously radioactive for hundreds of thousands of years.
"If you inhale it, it's there and it stays there forever," said Alan Lockwood, a professor of Neurology and Nuclear Medicine at the University at Buffalo and a member of the board of directors of Physicians for Social Responsibility, an advocacy group.
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Associated Press writers Shino Yuasa in Tokyo and Jonathan Fahey in New York contributed to this report.
Source: http://www.npr.org/templates/story/story.php?storyId=134379347&ft=1&f=
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