Tsunami hits north-eastern Japan after massive quake

  • Thread starter Thread starter Max
  • Start date Start date
  • Replies Replies 599
  • Views Views 29K
Not heard much today as been sleeping but what I have heard is the Nuclear plant is in a very serious state.
 
http://www.theaustralian.com.au/fuk...spection-records/story-fn84naht-1226023073141

The Japanese owner of the stricken Fukushima nuclear plant falsified safety data and "dishonestly" tried to cover up problems there.

Tokyo Electric Power Co injected air into the containment vessel of Fukushima reactor No 1 to artificially “lower the leak rate”. When caught, the company expressed its “sincere apologies for conducting dishonest practices”.

The misconduct came to light in 2002 after whistleblowers working for General Electric, which designed the reactor, complained to the Japanese government. Another GE employee later confessed that he had falsified records of inspections of reactor No1 in 1989 - at the request of TEPCO officials. He also admitted to falsifying other inspection reports, also on request of the client. After that incident TEPCO was forced to shut down 17 reactors, albeit temporarily.

Dale Bridenbaugh, a GE employee who was not the whistleblower, resigned 35 years ago after becoming convinced that the design of the Mark 1 reactor used at Fukushima was seriously flawed. Five of the six reactors were built to that design.

Mr Bridenbaugh told ABC News: “The problems we identified in 1975 were that, in doing the design of the containment, they did not take into account the dynamic loads that could be experienced with a loss of coolant.”

In a document entitled Lessons Learned from the TEPCO Nuclear Power Scandal, released by the company and seen by The Times, TEPCO blamed its “misconduct” in 2002 on its “engineers' overconfidence of their nuclear knowledge”. Their “conservative mentality” had led them to fail to report problems, the company said, resulting in an “inadequate safety culture”.

In 2007, TEPCO ran into trouble again after misinforming government officials about breakdowns at its Kashiwazaki-Kariwa plant, which had been damaged after a magnitude 6.8 quake. In a cable released by WikiLeaks, a US official said: “TEPCO issued a corrected statement on July 18 in which it admitted it miscalculated the amount of radiation leakage.”

WikiLeaks cables also reveal that Japan was warned in 2009 that its power plants could not withstand powerful earthquakes.

The US was highly critical of Japan's senior safety director at the International Atomic Energy Association “particularly with respect to confronting Japan's own safety practices”, according to confidential documents obtained by WikiLeaks. In July 2009, in a cable to Hillary Clinton, the Secretary of State, the US mission at the IAEA said Tomihiro Taniguchi, the deputy director of the IAEA department of nuclear safety and security, was a “weak manager” and in a cable sent later that year said that the department had suffered because of his “weak management and leadership skills”.
Click to expand...
 
No surprise that a power company does the dirty. Always putting money before safety.
Things thats annoying me is Wikileaks. They really **** me off, getting hold of cables illegally. But thats another topic. Thing is, reactors did withstand the quake. It was the comonation of quake and tsunami that pretty much wrecked them.

On a plus side, looks like the situation is finally under control now, and the units are stable. Hopefully be the last we hear of them, and people can focus on recovering (if possible) from the tragedy without fear of radiation sickness
 
Cal. said:
http://www.theaustralian.com.au/fuk...spection-records/story-fn84naht-1226023073141
Click to expand...

Jake said:
http://www.bbc.co.uk/news/world-12723092

The further you read down this article, the more sinister the whole situation begins to sound.

Reports of radio-caesium being detected, which suggests a meltdown is underway.

This report confirms my suspicion that the Japanese energy company are witholding information as well. The evidence shows they have a history of it.
Click to expand...

I mentioned that i thought that they were probably witholding information a few days ago.
 
[10:47 a.m. ET Thursday, 11:47 p.m. Thursday in Tokyo] Actress Sandra Bullock sent a $1 million donation to the Amerian Red Cross this week to help with earthquake and tsunami relief efforts in Japan, the organization said Thursday. It is the largest celebrity donation to the Red Cross to be announced since the disaster struck last Friday, although the charity may have gotten large contributions that were kept confidential at the donors' request.
 
Japan's damaged nuclear plant in Fukushima has been emitting radioactive iodine and caesium at levels approaching those seen in the aftermath of the Chernobyl accident in 1986. Austrian researchers have used a worldwide network of radiation detectors – designed to spot clandestine nuclear bomb tests – to show that iodine-131 is being released at daily levels 73 per cent of those seen after the 1986 disaster. The daily amount of caesium-137 released from Fukushima Daiichi is around 60 per cent of the amount released from Chernobyl.

The difference between this accident and Chernobyl, they say, is that at Chernobyl a huge fire released large amounts of many radioactive materials, including fuel particles, in smoke. At Fukushima Daiichi, only the volatile elements, such as iodine and caesium, are bubbling off the damaged fuel. But these substances could nevertheless pose a significant health risk outside the plant.

The organisation set up to verify the Comprehensive Nuclear-Test-Ban Treaty (CTBT) has a global network of air samplers that monitor and trace the origin of around a dozen radionuclides, the radioactive elements released by atomic bomb blasts – and nuclear accidents. These measurements can be combined with wind observations to track where the radionuclides come from, and how much was released.

The level of radionuclides leaking from Fukushima Daiichi has been unclear, but the CTBT air samplers can shed some light, says Gerhard Wotawa of Austria's Central Institute for Meteorology and Geodynamics in Vienna.

Ill wind

For the first two days after the accident, the wind blew east from Fukushima towards monitoring stations on the US west coast; on the third day it blew south-west over the Japanese monitoring station at Takasaki, then swung east again. Each day, readings for iodine-131 at Sacramento in California, or at Takasaki, both suggested the same amount of iodine was coming out of Fukushima, says Wotawa: 1.2 to 1.3 × 1017 becquerels per day.

The agreement between the two "makes us confident that this is accurate", he says. So do similar readings at CTBT stations in Alaska, Hawaii and Montreal, Canada – readings at the latter, at least, show that the emissions have continued.

In the 10 days it burned, Chernobyl put out 1.76 × 1018 becquerels of iodine-131, which amounts to only 50 per cent more per day than has been calculated for Fukushima Daiichi. It is not yet clear how long emissions from the Japanese plant will continue.

Similarly, says Wotawa, caesium-137 emissions are on the same order of magnitude as at Chernobyl. The Sacramento readings suggest it has emitted 5 × 1015 becquerels of caesium-137 per day; Chernobyl put out 8.5 × 1016 in total – around 70 per cent more per day.

"This is not surprising," says Wotawa. "When the fuel is damaged there is no reason for the volatile elements not to escape," and the measured caesium and iodine are in the right ratios for the fuel used by the Fukushima Daiichi reactors. Also, the Fukushima plant has around 1760 tonnes of fresh and used nuclear fuel on site, and an unknown amount has been damaged. The Chernobyl reactor had only 180 tonnes.

The amounts being released, he says, are "entirely consistent" with the relatively low amounts of caesium and iodine being measured in soil, plants and water in Japan, because so much has blown out to sea. The amounts crossing the Pacific to places like Sacramento are vanishingly small – they were detected there because the CTBT network is designed to sniff out the tiniest traces.

Dangerous isotopes

The Chernobyl accident emitted much more radioactivity and a wider diversity of radioactive elements than Fukushima Daiichi has so far, but it was iodine and caesium that caused most of the health risk – especially outside the immediate area of the Chernobyl plant, says Malcolm Crick, secretary of a United Nations body that has just reviewed the health effects of Chernobyl. Unlike other elements, he says, they were carried far and wide by the wind.

Moreover the human body absorbs iodine and caesium readily. "Essentially all the iodine or caesium inhaled or swallowed crosses into the blood," says Keith Baverstock, former head of radiation protection for the World Health Organization's European office, who has studied Chernobyl's health effects.

Iodine is rapidly absorbed by the thyroid, and leaves only as it decays radioactively, with a half-life of eight days. Caesium is absorbed by muscles, where its half-life of 30 years means that it remains until it is excreted by the body. It takes between 10 and 100 days to excrete half of what has been consumed.

While in the body the isotopes' radioactive emissions can do significant damage, mainly to DNA. Children who ingest iodine-131 can develop thyroid cancer 10 or more years later; adults seem relatively resistant. A study published in the US last week found that iodine-131 from Chernobyl is still causing new cases of thyroid cancer to appear at an undiminished rate in the most heavily affected regions of Ukraine, Belarus and Russia.

Caesium-137 lingers in the environment because of its long half-life. Researchers are divided over how much damage environmental exposure to low doses has done since Chernobyl. Some researchers think it could still cause thousands of new cases of cancer across Europe.

-- http://www.newscientist.com/article...dioactive-fallout-nears-chernobyl-levels.html
 
From what I've read, the radiation levels at and near reactor 3 are 10000 times higher than normal and that two workers were taken to hospital with acute radiation sickness and severe third degree burns. :S
 
For anyone interested in the science behind the earthquake, put horizon on now! BBC2, (will be on iplayer later aswell)
 
Grenwald said:
For anyone interested in the science behind the earthquake, put horizon on now! BBC2, (will be on iplayer later aswell)
Click to expand...

Recording. Hope they cover the nuclear side, geology is boringgg.
 
I'm watching it on TV now , some of the video footage is breathtaking! :O
 
some of the tsunami footage... wow. and the power of the quake itself, moved the entire earth on its axis a tiny bit! incredible!
 
Jake said:
http://www.bbc.co.uk/news/world-12860842
Click to expand...

The guy from xkcd did a nice little chart about this a couple of days ago...

radiation.png
 
 
Last edited:
You must log in or register to reply here.

FMBase

Beta

Resources

Back
Top