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Japan raises nuclear alert level Japan raises nuclear alert level
(40 minutes later)
Japan has raised the alert level at a stricken nuclear plant from four to five on a seven-point international scale for atomic incidents. Japan has raised the alert level at its quake-damaged nuclear plant from four to five on a seven-point international scale of atomic incidents.
The crisis at the Fukushima Daiichi site is now two levels below Ukraine's 1986 Chernobyl disaster. The crisis at the Fukushima Daiichi site, previously rated as a local problem, is now regarded as having "wider consequences".
The head of the UN's nuclear watchdog warned in Tokyo the battle to stabilise the plant was a race against time. The UN says the battle to stabilise the plant is a race against time.
The crisis was prompted by last week's huge quake and tsunami, which has left at least 16,000 people dead or missing. The crisis was prompted by last week's huge quake and tsunami, which has left at least 17,000 people dead or missing.
The Japanese nuclear agency's decision to raise the alert level to five grades Fukushima's as an "accident with wider consequences". Japanese nuclear officials said core damage to reactors 2 and 3 had prompted the raising of the severity grade.
They said core damage to reactors 2 and 3 had prompted the raising of the severity grade. The 1979 incident at Three Mile Island in the US was also rated at five on the scale, whereas the 1986 Chernobyl disaster was rated at seven.
It also places the situation there on a par with 1979's Three Mile Island nuclear accident in the US.
Meanwhile, further heavy snowfall overnight all but ended hopes of rescuing anyone else from the rubble after the 9.0-magnitude quake and tsunami.
Millions of survivors have been left without water, electricity, fuel or enough food; hundreds of thousands more are homeless.
According to the latest figures, 6,405 people are dead and about 10,200 are missing.
Panic-buyingPanic-buying
On Friday, people across Japan observed a minute's silence at 1446 (0546 GMT), exactly one week after the disaster. Further heavy snowfall overnight all but ended hopes of rescuing anyone else from the rubble after the 9.0-magnitude quake and tsunami.
Millions of people have been affected by the disaster - many survivors have been left without water, electricity, fuel or enough food; hundreds of thousands are homeless.
Japan's upgrading of the Fukushima incident from severity four to five stems from concerns about the reactors in buildings 1, 2 and 3, rather than the cooling ponds storing spent fuel.Japan's upgrading of the Fukushima incident from severity four to five stems from concerns about the reactors in buildings 1, 2 and 3, rather than the cooling ponds storing spent fuel.
Level five is defined as an "accident with wider consequences". This was the level given to the 1957 reactor fire at Windscale in the UK and the partial meltdown of the Three Mile Island plant in the US in 1979.Level five is defined as an "accident with wider consequences". This was the level given to the 1957 reactor fire at Windscale in the UK and the partial meltdown of the Three Mile Island plant in the US in 1979.
Both met the level five definition of "limited release" of radioactive materials to the wider environment.Both met the level five definition of "limited release" of radioactive materials to the wider environment.
Windscale is believed to have caused about 200 cases of cancer, whereas reports into the Three Mile Island incident suggest there were no health impacts outside the site.Windscale is believed to have caused about 200 cases of cancer, whereas reports into the Three Mile Island incident suggest there were no health impacts outside the site.
French and US officials had previously said the Fukushima situation was more serious than Japanese evaluations suggested.French and US officials had previously said the Fukushima situation was more serious than Japanese evaluations suggested.
Higher radiation levels than normal have been recorded in a few places 30km from the site, but in Tokyo, they were reported to be normal.Higher radiation levels than normal have been recorded in a few places 30km from the site, but in Tokyo, they were reported to be normal.
As the country paused to remember, relief workers toiling in the ruins bowed their heads, while elderly survivors in evacuation centres wept. The national police say 6,911 people are known to have died in the disaster, and 10,316 are still missing.
Despite official assurances that the radiation risk is virtually nil outside the 20-km (12-mile) exclusion zone around the plant, unease has spread overseas. On Friday, people across Japan observed a minute's silence at 1446 (0546 GMT), exactly one week after the disaster.
Spain has joined Britain, the US and other countries in organising aircraft to evacuate from Japan those of their citizens who are concerned. As the country paused to remember, relief workers toiling in the ruins bowed their heads, and some elderly survivors in evacuation centres wept.
Store shelves in parts of the US have been stripped of iodine pills, which can protect against radiation, while Asian airports have been scanning passengers from Japan for possible contamination. Japanese officials continue to try to reassure people that the radiation risk is virtually nil outside the 30-km (18-mile) exclusion zone around the plant.
But foreign governments are taking wider precautions - Spain has joined Britain, the US and other countries in organising the evacuation of any of their citizens who are concerned.
And panic has spread overseas, with shops in parts of the US being stripped of iodine pills, which can protect against radiation, and Asian airports scanning passengers from Japan for possible contamination.
Shoppers in China have been panic-buying salt in the mistaken belief that it can guard against radiation exposure.Shoppers in China have been panic-buying salt in the mistaken belief that it can guard against radiation exposure.
Meanwhile, Prime Minister Naoto Kan told a national television address: "We will rebuild Japan from scratch. We must all share this resolve."Meanwhile, Prime Minister Naoto Kan told a national television address: "We will rebuild Japan from scratch. We must all share this resolve."
He said the natural disaster and nuclear crisis were a "great test for the Japanese people", but exhorted them all to persevere.He said the natural disaster and nuclear crisis were a "great test for the Japanese people", but exhorted them all to persevere.
The head of the International Atomic Energy Agency, Yukiya Amano, arrived earlier in Tokyo and warned the Fukushima crisis was a "race against the clock". International Atomic Energy Agency chief Yukiya Amano arrived earlier in Tokyo and warned the Fukushima crisis was a "race against the clock".
"This is not something that just Japan should deal with, and people of the entire world should co-operate with Japan and the people in the disaster areas," said Mr Amano, a Japanese citizen."This is not something that just Japan should deal with, and people of the entire world should co-operate with Japan and the people in the disaster areas," said Mr Amano, a Japanese citizen.
He said he would not visit the Fukushima Daiichi site, which has been rocked by a series of explosions, on his current trip to the country. He said his team would monitor radiation in Tokyo and in the area around the Fukushima Daiichi site, which has been rocked by a series of explosions.
His four-member team of nuclear experts would start by monitoring radiation in the capital, he said, before moving to the vicinity of the quake-hit facility. The IAEA announced it would hold a special board meeting on Monday to discuss Mr Amano's findings.
The plant's operator, Tokyo Electric Power Co, said it was not ruling out the option of entombing the plant in concrete as a last resort to prevent a catastrophic radiation leak. The Fukushima plant's operator Tokyo Electric Power (Tepco) said it was not ruling out the option of entombing the plant in concrete to prevent a radiation leak; a similar method was used at Chernobyl.
The method was used during the Chernobyl nuclear disaster in Ukraine in 1986.
Military fire trucks have been spraying the plant's overheating reactor units for a second day.Military fire trucks have been spraying the plant's overheating reactor units for a second day.
Water in at least two fuel pools - in reactor buildings 3 and 4 - is believed to be dangerously low, exposing the stored fuel rods.Water in at least two fuel pools - in reactor buildings 3 and 4 - is believed to be dangerously low, exposing the stored fuel rods.
This increases the chance of radioactive substances being released from the rods.This increases the chance of radioactive substances being released from the rods.
An electricity line has been bulldozed through to the site and engineers are racing to connect it, but they are being hampered by radiation.An electricity line has been bulldozed through to the site and engineers are racing to connect it, but they are being hampered by radiation.
The plant's operators need the power cable to restart water pumps that pour cold water on the reactor units.The plant's operators need the power cable to restart water pumps that pour cold water on the reactor units.
Military helicopters which dropped water from above on Thursday have been kept on standby.Military helicopters which dropped water from above on Thursday have been kept on standby.
Televised footage of the airdrops had shown much of the water blowing away in the wind.Televised footage of the airdrops had shown much of the water blowing away in the wind.