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The end of the empire of Japan


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Not necessarily. The meltdowns at Fukushima occurred with reactors that had been stopped.

They did not stop, they went critical. Reactors 1, 2 and 3 were fully operational when the meltdowns occurred. #4 had no fuel in the reactor, 5 and 6 were offline and not operational.

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I've heard that radiation is not harmful, below the deterministic threshold of 250 mSv

So they are quite safe then, since they're well below the 250. All those very low numbers you're concerned about, they are limits to keep your dose as low as reasonably achievable. They are the result

Yes, you nailed it. There are numerous dose rate "maps" of the region around the reactor and the numbers I see are higher than what we call normal, but far from life threatening. Authorities are now p

Reactors 1, 2 and 3 were fully operational when the meltdowns occurred.

You have absolutely no idea what you are talking about. Reactors 1, 2 and 3 completely shut down when the quake triggered the emergency stop (i.e.the rods were pulled from the core and fission is halted). The only reason there was a problem is reactors take time to cool down and the cooling system failed. This led to melting of the rods which changes nothing about the radiation profile unless fission restarts (this is why meltdowns can be catastrophic). Fission did not restart in this case. Edited by TimG
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Operational in terms of the plant was online when the incident occurred. Then we can argue about if the shutdown actually happened. And how it could be that 3 cores went into meltdown and one meltthrough.

Once the rods in the pools were exposed to the air, fission can and most likely did take place.

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Then we can argue about if the shutdown actually happened.

The shutdown happened. There is no debate on this point.

And how it could be that 3 cores went into meltdown and one meltthrough.

Rods are very hot after then are pulled from the core. This heat must be dissipated. When the cooling systems failed this excess heat caused the rods to melt. There is no debate on why the meltdown occurred.

Meltdowns are not a huge concern if the resulting mass stays within the containment vessel. The only problem is clean up will take longer. If the mass leaves the containment vessel then more radiation can be released but the amount of additional radiation depends on many factors - it could be fairly small. The risk from meltdowns that makes nuclear engineers scared is the possibility that the melted mass will go critical and an uncontrolled chain reaction could start. If it does you have a catastrophe. That did not happen at Fukushima.

Once the rods in the pools were exposed to the air, fission can and most likely did take place.

When I say fission, I mean the continuous chain reaction that drives a nuclear power plant. This requires that rods be combined with a core to maintain the chain reaction. Simply being exposed to air changes nothing about the state of the rods. All it means is the water is no longer shielding the rods and the radiation escapes into the air (water is an extremely good radiation shield). Edited by TimG
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Well i thought you wanted a response specifically to the video of the guy walking around on the Californian beach. I just gave it to you.

Thunderf00t has actually done 5 videos in the past month on the topic of radiation alarmism, specifically Fukushima.

There you go.

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They keep underestimating the radiation.

http://rt.com/news/fukushima-radiation-levels-underestimated-143/

TEPCO has revised the readings on the radioactivity levels at the Fukushima No. 1 nuclear plant well to 5 million becquerels of strontium per liter – both a record, and nearly five times higher than the original reading of 900,000 becquerels per liter.

Strontium-90 is a radioactive isotope of strontium produced by nuclear fission with a half-life of 28.8 years. The legal standard for strontium emissions is 30 becquerels per liter. Exposure to strontium-90 can cause bone cancer, cancer of nearby tissues, and leukemia.

Tokyo Electric Power Co. originally said that the said 900,000 becquerels of beta-ray sources per liter, including strontium - were measured in the water sampled on July 5 last year.

However, the company noted on Friday that the previous radioactivity levels had been wrong, meaning that it was also likely reading taken from the other wells at the disaster-struck plant prior to September were also likely to have been inaccurate, the Asahi Shimbum newspaper reported.

The Japanese company has already apologized for the failures, which they said were a result of the malfunctioning of measuring equipment.

Another thing about the radioactive substances simply falling to the bottom of the ocean. Countries around the world dumped over 100,000 barrels of radioactive waste into the ocean. Now, no need for barrels, just simply build a pipe KMs long into the ocean and dump it directly there.

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  • 1 month later...
  • 3 months later...

Current wind map over Japan with that large typhoon heading right up the middle of Japan. The last few storms that went through Japan caused some damage at Fukushima, and this could cause more damage.

http://earth.nullschool.net/#current/wind/surface/level/orthographic=-217.86,35.29,652

I've been following a few channels that talk a lot about Fukushima, this is a good one.

https://www.youtube.com/watch?v=NuJvydkJWJM#t=10

Looks like Reactor 5 is about to blow.

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I realize what the thread is about because I read the title. And I realize that suddenly this forum's mod is picking out slightly off topic posts of those who aren't the among the privileged swine who can say what they like.

Anything you realize yet?

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I realize what the thread is about because I read the title. And I realize that suddenly this forum's mod is picking out slightly off topic posts of those who aren't the among the privileged swine who can say what they like.

Anything you realize yet?

This thread is over 3 years old, long before you started here on this board. So what is your point?

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  • 5 months later...

http://www.cbsnews.com/news/radiation-from-fukushima-turning-up-in-north-american-waters/

Plumes of radioactive water from the damaged Fukushima nuclear power plant have been detected off the coast of Canada.

There have long been concerns that water laced with the radioactive materials cesium-137 and cesium-134 from the plant would make the 5,000 mile trip across the Pacific Ocean. Radiation in the atmosphere reached the West Coast within days of the Fukushima incident, and though it has taken much longer for it to make its way here by sea, a study out Monday in the Proceedings of the National Academy of Sciences confirmed that it has arrived.

Plumes of radioactive water from the damaged Fukushima nuclear power plant have been detected off the coast of Canada.

There have long been concerns that water laced with the radioactive materials cesium-137 and cesium-134 from the plant would make the 5,000 mile trip across the Pacific Ocean. Radiation in the atmosphere reached the West Coast within days of the Fukushima incident, and though it has taken much longer for it to make its way here by sea, a study out Monday in the Proceedings of the National Academy of Sciences confirmed that it has arrived.

These idiots keep on downplaying it almost 4 years on. Once Fukushima blew, the acceptable radiation doses in Canada and the USA were increased, because well, that is the new norm because it cannot be filtered out of the environment.

http://canadaam.ctvnews.ca/report-raises-fresh-concerns-about-radiation-levels-in-japanese-fish-1.1486514

A very key point in this article.

While Canadians are exposed to radiation every day from the sun and the environment, Edwards notes that radioactive cesium doesn't exist in nature at all and it's not known if there is any safe level.

Anyone wanna still trot out the banana equivalent??

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Once Fukushima blew, the acceptable radiation doses in Canada and the USA were increased, because well, that is the new norm because it cannot be filtered out of the environment.

Stuff like this is why it is difficult to take nuclear-phobes seriously. There is no evidence that low levels of radiation are dangerous and the levels that were set are based on paranoia rather than actual science.
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Stuff like this is why it is difficult to take nuclear-phobes seriously. There is no evidence that low levels of radiation are dangerous and the levels that were set are based on paranoia rather than actual science.

I know I know, cesium is as deadly as K-40.

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So,  6 years later and this is still a problem.

http://www.foxnews.com/science/2017/02/08/incredibly-high-radiation-levels-discovered-at-crippled-fukushima-plant.html

Quote

Newly-discovered radiation levels in one of the Fukushima Daiichi Nuclear Power Plant’s reactors are stunningly high, the Japan Times and others have reported. The space is so radioactive that even a robot couldn’t last two hours, let alone a human.

It was on March 11, 2011, that the coastal power plant in Japan’s Fukushima Prefecture was hit by a tidal wave, which not only cut off the plant’s electrical power, also took out the generators that provided its backup power. The natural disaster triggered the meltdown of three reactors at the plant.

Interesting to look back on this thread and see how many people were wrong they were and were downplaying the severity.   And now from what I understand there were 4 meltdowns and, possibly TWO melt-throughs. 

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So after 6 years they are finally able to determine the levels of intense radiation coming out of the defunct #2 reactor.  I made a joke with an animated clip with the notion of 'we are building robots to go in to see how bad it is so we can build new robots to see how bad it is, so we can build more robots that could last more than a couple hours to determine the level of radiation.

Over the years several designs were made, but they were not hardened enough. Why? Because no one has seen this level of radiation before. This situation is by far worse than Chernobyl, no matter how you look at it. (middle finger to all those who said I was wrong and crazy).

http://www.cbc.ca/news/technology/fukushima-nuclear-robot-radiation-1.3973908

 

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TEPCO officials said that despite the dangerously high figures, radiation is not leaking outside of the reactor.

This is absolute bull. 

http://www.theverge.com/2017/2/17/14652274/fukushima-nuclear-robot-power-plant-radiation-decomission-tepco

Meanwhile radioactive water is still spilling into the ocean. 6 years later.

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On 11/03/2011 at 11:16 AM, bush_cheney2004 said:

Not only will Japan "recover", but it will grow stronger as the best prepared nation on the planet for earthquakes and tsunamis. Remember, Nagasaki and Hiroshima recovered nicely too.

Thinking something radical, maybe US could help Japanese by nuking them again...:D

LOL. Not "them", but nuke the site after evacuating the residents first.

The explosion of a low yield nuclear bomb may also trigger and involve the remaining radio active materials in the reactor in its chain reaction and consume them up.

There will be some fallout but the fallout of a nuclear bomb decays far faster than the reactor's. The site will be habitable again after couple of years like Hiroshima and Nagasaki.

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12 hours ago, xul said:

Thinking something radical, maybe US could help Japanese by nuking them again...:D

LOL. Not "them", but nuke the site after evacuating the residents first.

The explosion of a low yield nuclear bomb may also trigger and involve the remaining radio active materials in the reactor in its chain reaction and consume them up.

There will be some fallout but the fallout of a nuclear bomb decays far faster than the reactor's. The site will be habitable again after couple of years like Hiroshima and Nagasaki.

That will take a couple decades at the minimum as it is expected to take about 50 years for the clean up at Fukushima. No one is going back anytime soon.

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1 hour ago, GostHacked said:

That will take a couple decades at the minimum as it is expected to take about 50 years for the clean up at Fukushima. No one is going back anytime soon.

But that is largely due to the insane over-reaction caused by nuclear phobes:

http://www.sciencemag.org/news/2017/01/fukushima-residents-exposed-far-less-radiation-thought

Quote

[Scientists] have taken the thousands of data points from the Date dosimeters and compared them with the ground-level estimates from the helicopter data. The scientists concluded that actual radiation doses were roughly 15% of what the helicopters were measuring

 

Edited by TimG
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8 hours ago, GostHacked said:

That will take a couple decades at the minimum as it is expected to take about 50 years for the clean up at Fukushima. No one is going back anytime soon.

I've heard that radiation is not harmful, below the deterministic threshold of 250 mSv

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