Fukushima loses cooling power. A damaged reactor building at the Fukushima power plant where an electricity failure has left spent nuclear fuel rods without fresh cooling water.
Photograph: Tepco/EPA Four fuel storage pools at Japan's Fukushima nuclear plant have been without fresh cooling water for more than 15 hours due to a power outage. The plant's operator has said it is trying to repair or replace a broken switchboard that might be the problem. The 11 March 2011 earthquake and tsunami destroyed the plant's power and cooling systems, causing three reactor cores to melt and fuel storage pools to overheat. The plant has since been using makeshift systems. Plant operator Tepco said pool temperatures remained within safe levels and the pools would remain safe for at least four days without fresh cooling water. Tepco was preparing a backup system in case the repairs didn't work, said Masayuki Ono, a company official. Yoshihide Suga, the chief government spokesman, sought to allay concerns. Record levels of radiation found in fish near Japan's Fukushima plant. Ocean still suffering from Fukushima fallout.
Noriko Hayashi for The Washington Post via Getty Images Seafood from the seas around the destroyed Fukushima nuclear power plant is still not considered safe to eat.
Radioactivity is persisting in the ocean waters close to Japan's ruined nuclear power plant at Fukushima Daiichi. New data presented at a conference held on 12–13 November at the University of Tokyo show that levels of radioactivity in the sea around the plant remain stable, rather than falling as expected. Researchers believe that run-off from rivers, as well as continued leaks from the plant, may be partially to blame. But contaminated sediment and marine organisms also seem to be involved. Air programms. The Rise of Nuclear Fear–How We Learned to Fear the Radiation. I remember going to bed one night when I was 11, seriously afraid I would not be alive in the morning.
It was October, 1962, and the frightening cold war between the U.S. and Soviet Union, constantly in the news but mostly abstract to me as a kid, had becoming terrifyingly real. I had watched a stern President Kennedy on TV revealing that Soviet missiles were being installed in Cuba and ordering a blockade of Soviet ships. There were pictures of the missile sites, and video of confrontations at sea. Very high radiation, little water in Japan reactor.
TOKYO (AP) — One of Japan's crippled nuclear reactors still has fatally high radiation levels and much less water to cool it than officials had estimated, according to an internal examination that renews doubts about the plant's stability.
A tool equipped with a tiny video camera, a thermometer, a dosimeter and a water gauge was used to assess damage inside the No. 2 reactor's containment chamber for the second time since the tsunami swept into the Fukushima Dai-ichi plant a year ago. The data collected Tuesday showed the damage from the disaster is so severe, the plant operator will have to develop special equipment and technology to tolerate the harsh environment and decommission the plant, a process expected to last decades. The other two reactors that had meltdowns could be in even worse shape. The No. 2 reactor is the only one officials have been able to closely examine so far. View gallery In this photo taken by an endoscope and released by Tokyo Electric Power Co. One Year Later: A Fukushima Nuclear Disaster Timeline. 1 Year Later, What Does Fukushima Mean for Nuclear Research?
Map of nuclear power reactors in the USA (image from the U.S.
Nuclear Regulatory Commission - How does a Canadian-American professor of uranium mineralogy living in the unassuming American Midwest respond to the one-year anniversary of Fukushima? He writes a calculated review of what’s known and not known about the behavior of nuclear fuel after a reactor accident. Then he goes back to writing grant proposals, reviewing journal articles and fielding questions from graduate students. Fukushima's fate inspires nuclear safety rethink - tech - 09 March 2012. The crisis that unfolded at the Fukushima Daiichi nuclear plant after Japan's megaquake and tsunami is rewriting the nuclear safety guide.
The European Union, for instance, has ordered a risk assessment of all nuclear power plants in its member states. These assessments are supposed to consider each plant's ability to withstand a full range of potential hazards – from earthquakes and floods to plane crashes and terrorist attacks. The Japanese disaster did bring some positive news. Fukushima's dirty inheritance - opinion - 09 March 2012. A YEAR on, the world is still feeling the effects of the earthquake and tsunami that devastated eastern Japan.
The dual catastrophe is estimated to have killed almost 20,000 people. Yet it is the consequences of the subsequent partial meltdown at the Fukushima Daiichi nuclear power plant, which has so far killed no one, that have reached furthest. Of most immediate relevance are the lessons we have learned - or rather, had reiterated - about how to make nuclear plants safer. Fukushima Daiichi was plunged into crisis because its design included a "single point of failure" - in this case, an inadequate sea wall that allowed the tsunami to knock out multiple critical systems (see "Fukushima's fate inspires nuclear safety rethink" and "Can diverse power backups boost nuclear plant safety? "). More attention will have to be paid to such local risk factors when designing future plants or upgrading existing ones.
There is a growing backlog of defunct reactors waiting to be decommissioned. Japan's Post-Fukushima Earthquake Health Woes Go Beyond Radiation Effects. After the March 11, 2011, earthquake and tsunami crippled Japan's Fukushima Daiichi nuclear power plant, worry about the unfolding nuclear accident quickly commandeered international headlines.
Even after the situation was brought under relative control over subsequent days and weeks, public concern hung on the threat of radiation almost more than it did than on the tsunami and earthquake themselves, which had killed more than 15,850 people and displaced at least 340,000 more. A year out, public health experts agree that the radiation fears were overblown. Compared with the effects of the radiation exposure from Fukushima, "the number of expected fatalities are never going to be that large," says Thomas McKone, of the University of California, Berkeley, School of Public Health. And some, including Richard Garfield, a professor of Clinical and International Nursing at Columbia University's Mailman School of Public Health, go a step further.
Reacting over radiation. Japan too slow in Fukushima health checks-rights group. By Yoko Kubota TOKYO, March 6 (Reuters) - A year after the Fukushima nuclear crisis, Japan's government is still too slow in providing health checks and information to residents, leaving them confused and suspicious of authorities, Human Rights Watch said on Tuesday.
"A year on, we are really not seeing basic health services being offered in an accessible way and we are not seeing accurate, consistent, non-contradictory information being disclosed to people on a regular basis," Jane Cohen, a researcher at the New York-based rights group, told Reuters. "People have to at least be equipped with accurate information so that they are evaluating their situation based on real facts. " The tsunami that hit Japan's Pacific coast last March 11 devastated the Fukushima nuclear power plant, 240 km (150 miles) northeast of Tokyo, causing radiation leaks that contaminated land, air and water and forced tens of thousands to flee.
Cohen said mistrust of authorities had grown. Sizing Up Health Impacts a Year After Fukushima. Scientists report back from Fukushima exclusion zone. Patterns of tsunami damage in areas such as Kesennuma, northeast of Fukushima, reveal wave behaviour that could be used to improve defences.
The tsunami that crippled Japan’s Fukushima Daiichi nuclear plant almost a year ago was as formidable as initial estimates suggested, according to the first scientific assessment of its impact on the locale. Radioactive caesium found in milk powder. Updated Wed 7 Dec 2011, 6:42am AEDT Radioactive caesium believed to have come from the Fukushima nuclear plant has been found in a brand of Japanese baby formula. Caesium levels of up to 31 becquerels per kilogram have been found in baby formula made by the Meiji Corporation. While it is below the government-set allowable limit of 200 becquerels per kilogram, there are concerns that babies are more susceptible to the harmful effects of radiation. Radiation levels in Fukushima are lower than predicted - health - 16 November 2011. The fallout from the radiation leak at the Fukushima Daiichi nuclear reactor in Japan may be less severe than predicted.
Radiology researcher Ikuo Kashiwakura of Hirosaki University, Japan, and colleagues responded immediately to the disaster, travelling south to Fukushima prefecture to measure radiation levels in more than 5000 people there between 15 March and 20 June. They found just 10 people with unusually high levels of radiation, but those levels were still below the threshold at which acute radiation syndrome sets in and destroys the gastrointestinal tract. Geiger-counter readings categorised all others in the area at a "no contamination level". How did the population of Fukushima prefecture dodge the radioactivity? Gerry Thomas at Imperial College London, director of the Chernobyl Tissue Bank, says the answer is simple. Rapid response. Directly comparing Fukushima to Chernobyl. Press. Fukushima. Fukushima investigation reveals failings.
Japan's response to the nuclear crisis that followed the tsunami in March was confused and riddled with problems , a report has revealed. The disturbing picture of harried workers and government officials scrambling to respond to the problems at the Fukushima Daiichi nuclear power plant was depicted in the report, detailing a government investigation. The 507-page interim report, compiled by interviewing more than 400 people, including utility workers and government officials, found that authorities had grossly underestimated tsunami risks, assuming the highest wave would be six metres (20ft). World Nuclear News. Battle to stabilise earthquake reactors. UPDATE 14: 23.44 pm GMT. Insight to Fukushima engineering challenges. ORIGINALLY PUBLISHED: 3.48pm GMT. 15/3 Japan's nuclear crisis. Read full article Continue reading page |1|2 With muddled media reports of the ongoing crisis, we spell out exactly what has happened up to 15 March, and what might happen next Which reactors have been hit hardest by the quake, and where are they?
Where are the world's nuclear reactors? WNA Advanced Nuclear Database. This Advanced Search allows you to search for reactors based on a number of different criteria. Fukushima leak is plugged, TEPCO in more hot water. Andy Coghlan, reporter. AlertNet SPECIAL COVERAGE. AlertNet JPN IN GRAPHICS. Station BLACKOUT caused nuclear accident. Chernobyl response. CHERNOBYL, Ukraine—Imagine a metal arch taller than the Statue of Liberty. Now picture it sliding a distance of roughly three football fields, making it the largest movable structure ever . Fukushima Daiichi won't be Chernobyl. Read full article Continue reading page |1|2. Fukushima Will Be Wasteland.
What Happens During a Nuclear Meltdown? Fukushima Health Risks Scrutinized. Partial Meltdowns - Explosions. Cracked fuel rods threaten meltdown. Radioactive fuel dumps pose new threat. Radiation from Fukushima. A Time for Discussion... (Energy Collective) The unpalatable truth is that the anti-nuclear lobby has misled us all. The fear of nuclear. Nuclear Boy - English Subtitles - うんち・おならで例える原発解説. A Personal Journey for Japan. Managing water is Fukushima priority.