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george

Meltdown Likely Under Way At Japan Nuclear Reactor

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I am sure we can all rest easier knowing they only designed it for a lower level quake. And just what person decided that a 9.0 quake was not in the realm of possibility?

If this is not an convincing argument against building one in LOS, I don't know what is. The combination of corruption leading to cost cutting and shoddy workmanship combined with the lack of "service after the sale" here would make a quake unnecessary.

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Sorry Jdietz... you're wrong in characterizing the radiation release as slightly radioactive and no immediate danger...

If you go back and read thru the posts above on this subject, you'll see even TEPCO has acknowledged high levels of radiation in the plant and on the boundary of the plant. And both TEPCO and the Japanese govt. have acknowledged the release of nuclear fision elements into the environment, being cesium and iodine... It's definitely a health problem for anyone around the plant.

One general characterization of levels outside the plant was one hour of exposure there was equal to a year's worth of natural radiation exposure...

Now, as a separate matter, what what means for the broader environment and someone flying in jets at 30,000 feet, that I don't know..and hasn't been addressed here at all...

Nearby the plant, and up in the air at 30,000 feet flying to the U.S., are entirely different discussions.

You're wrong :)

Relax. At this time the only thing released is steam, which is slightly radioactive because it has been through the reactor. The amounts measured at the site itself poses no immediate danger, let alone when flying at 10KM (30,000 feet) over it. It would surprise me if it was even measurable at that level.

So no 'radiation cloud' or anything at the moment, all the reactor cores seem to be intact still at the moment of this writing.

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To put the current radiation level in perspective:

The site boundary 500μSv / h were measured

0.5 milliSievert (mSv) per hour exposed at the boundary of the nuclear plant.

a normal X-ray exposure is about 6 mSv.

A years worth of natural background radiation about 3 mSv.

So at the moment, if you stand at the sites' gates for 6 hours you will be exposed to the same radiation as you would get getting an X-Ray taken.

No worries yet flying over it, but you definitely don't want to stay in your house in the area.

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where is the radiation going? Is it blowing towards North America?

My question then is, will it be safe to fly? If one looks at the air routes, they seem to fly over Japan and through the radiation cloud.

Please, someone tell me I am wrong.

WIND

CNN just had a professor on who explained that there is no melt dow... reactors are build failure-proof... the radiation from a scan are 100-1,000 times more than standing next to the reactor for an hour...

In other words: Carry on, don't worry be happy. Nothing to see here folks, move along.

Hi-Tech is limited, human insanity is not. - Who is his paymaster?

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Another Japanese nightmare... They always pretended that their nuclear power plants were earthquake-resistant and safe for any tremor that could shake the construction.

Now we have another Chernobyl coming up, despite all what they are pretending that there is no immediate threat for the people. Why then evacuate them 20 km away from the plant? Melting is underway and nobody can stop it. It will continue to burn as in Chernobyl, until all nuclear fuel has been burnt and blown in the sky, poisening thousands of sq.km. land and/or ocean. A nuclear powerplant is not like a Toyota car which has been recalled for failing breakes... Will they ever learn??? :bah:

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Thanks Elcent... I knew you'd have it...;

So, in regard to the prior post on this, the Japanese govt. is saying the Fukushima situation is accident is a level 4 "without significant off-site risk."

Interesting characterization, to say the least.

scale-echelle-eng.gif

INES Scale (International Nuclear Events Scale)

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Ding, actually, the Japanese govt. acknowledged earlier today that a partial meltdown probably had occurred already at Fukushima Daichi reactor 1, and was a danger of that at Fukushima Daichi reactor 3.

CNN just had a professor on who explained that there is no melt dow... reactors are build failure-proof... the radiation from a scan are 100-1,000 times more than standing next to the reactor for an hour...

In other words: Carry on, don't worry be happy. Nothing to see here folks, move along.

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where is the radiation going? Is it blowing towards North America?

My question then is, will it be safe to fly? If one looks at the air routes, they seem to fly over Japan and through the radiation cloud.

Please, someone tell me I am wrong.

At the moment is good to remember that just couple of decades ago there has been a lot of nuclear bomb tests in the air. These did occur also inside of USA.

The nuclear radiation and fallout from these bombs were likely million or billion times higher than what could be released form the Japan nuclear plant even in the worst case scenario of meltdown.

This is an local problem, not global.

But still today no one is allowed in this area. This is off limit (just like Chernobyl) for hundreds of thousands of years. Give us some more of these places in the world and traveling will be an art to escape from radiation coming from previous disasters in previous centuries... :bah:

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US reactor experts en route to Japan

The US Nuclear Regulatory Commission has dispatched 2 specialists to Japan to discuss how to deal with the accidents at 2 quake-damaged nuclear power plants in Fukushima.

The 2 experts are scheduled to arrive on Sunday as part of a rescue team from the US Agency for International Development.

The Nuclear Regulatory Commission oversees operations and management of nuclear power plants in the United States.

Chairman Gregory Jaczko says the organization has some of the world's top nuclear experts and is ready to assist in any way possible.

Sunday, March 13, 2011 09:37 +0900 (JST)

http://www3.nhk.or.jp/daily/english/13_12.html

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Just changed my flight to BKK through Korea rather than Narita. I feel so sad for Japan. What are the signs of the acopalypse? This has been a very strange couple of years!

As crazy as that sounds I would be lying if I said the thought never crossed my mind.

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Thanks Elcent... I knew you'd have it...;

So, in regard to the prior post on this, the Japanese govt. is saying the Fukushima situation is accident is a level 4 "without significant off-site risk."

Interesting characterization, to say the least.

scale-echelle-eng.gif

INES Scale (International Nuclear Events Scale)

It must be stage six. I think we see apologists at work who are paid to play the accident down.

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Couple of interesting things here...

No.1 - The head IAEA guy is a former Japanese diplomat.

No. 2 - TEPCO, the plant operator at Fukushima, drew a lot of criticism in a prior quake related nuclear problem for not wanting IAEA to do monitoring... Be interesting to see if IAEA is allowed to get involved at Fukushima.. They made the offer, and now?

IAEA chief expresses concern

The chief of the International Atomic Energy Agency has expressed concern over the accident at the Fukushima nuclear plant.

IAEA Director General Yukiya Amano said on Saturday that he hopes the facility will be secured as soon as possible.

He also said he told the Japanese government that his agency is ready to send experts to survey the effects of radioactivity.

Sunday, March 13, 2011 09:37 +0900 (JST)

http://www3.nhk.or.j...lish/13_11.html

Yukiya Amano (天野 之弥, Amano Yukiya?, born 9 May 1947) is the current Director General of the International Atomic Energy Agency (IAEA), having been elected to the position in July 2009. Amano previously served as a Japanese diplomat and international civil servant for the United Nations and its subdivisions.

Edited by jfchandler

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The first explanation I've seen of what happened with the generators at the Fukushima Daichi plant... from NHK.

The Tokyo Electric Power Company, the plants' operator, tried to restore depressurizing equipment using a mobile generator. But the plan failed as the equipment had already been damaged by tsunami waves.

And the same account from the Prime Minister in his news conference yesterday:

Prime Minister Naoto Kan says he will do his utmost to safeguard the health of residents near the unstable Fukushima No.1 nuclear power plant.

At a news conference on Saturday, Kan said unexpectedly powerful tsunami waves interfered with the operation of back-up systems when the plant's operations were halted.

Then, I believe NHK is referring to the separate Fukushima Daini plant, about 10 Km away, below:

At the Number Two Plant, cooling water temperatures in its 3 reactors remain at 100 degrees Celsius--more than 3-times higher than the normal operating temperature.

The utility is considering other options to restore failed cooling systems for these reactors.

http://www3.nhk.or.j...lish/13_10.html

Edited by jfchandler

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The first explanation I've seen of what happened with the generators at the Fukushima Daichi plant... from NHK.

The Tokyo Electric Power Company, the plants' operator, tried to restore depressurizing equipment using a mobile generator. But the plan failed as the equipment had already been damaged by tsunami waves.

And the same account from the Prime Minister in his news conference yesterday:

Prime Minister Naoto Kan says he will do his utmost to safeguard the health of residents near the unstable Fukushima No.1 nuclear power plant.

At a news conference on Saturday, Kan said unexpectedly powerful tsunami waves interfered with the operation of back-up systems when the plant's operations were halted.

Then, I believe they're referring to the separate Fukushima Daini plant below:

At the Number Two Plant, cooling water temperatures in its 3 reactors remain at 100 degrees Celsius--more than 3-times higher than the normal operating temperature.

The utility is considering other options to restore failed cooling systems for these reactors.

http://www3.nhk.or.j...lish/13_10.html

Safety Design verses Costs, Does anyone remember the CAN-DO Reactors built in Canada using Heavy Water, if i remember correct that design stopped working if you lost the heavy water , maybe i am wrong, was just something in my mind from years ago, and the rest of the world went on to do it with out HEAVY Water as a lower cost . maybe they need think design again in earthquake areas

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