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Reactor meltdown possible in Japan.


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Koyodo:

http://english.kyodo...1/03/77339.html

*Meanwhile, radiation monitored at the Onagawa nuclear power plant in Miyagi Prefecture on the Pacific coast shot up on Sunday, Tohoku Electric Power Co. said, adding that it was likely caused by radioactive substances let out at the troubled Fukushima No. 1 nuclear power plant in Fukushima Prefecture.Radiation levels were very low but about 400 times as high as in normal times, the power supplier said, dismissing the possibility that the Miyagi plant was to blame.

how far away from each other are the plants

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NBC news on the Today Show also has finally found an actual nuclear scientist to ask about the situation. Baby steps. Man the American news outlets are run by idiots nowadays, it took too long form them to go ahead and start asking the people most likely to impart good information as opposed to speculation. Lester Holt sounded kinda disappointed when the expert they talked to mentioned at the end of it that it was highly unlikely this could negatively affect the US in the worst case scenario.

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1111: Govt spokesman: Rising pressure at No 3 reactor isn’t an immediate risk but could get worse.

1110: Govt spokesman: There’s a failure of the valve at the No 3 reactor at Fukushima 1 power station. Not clear if this is cause of effect of the fact that gauge isn’t showing rising water level.

1008: Govt spokesman: Trying to lower pressure at No 3 reactor at Fukushima 1 power station. Confirms risk of explosion.

1107: Govt spokesman: Currently radiation monitor hasn’t show any change.

1105: Yukio Edano, the government spokesman, is speaking now. He says authorities have begun injecting seawater at the No 3 reactor at Fukushima 1 power station. He said the water level is thought to be rising, but the gauge, which seems to be broken, is not showing this.

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Uninformed swag about Japan plants and US- difference between a weapon and this in a worst case scenario, an explosion here won't reach the stratosphere and hurl irradiated material miles into the air. Anything solid will probably settle fairly close to the blast site, and any gasses will take days to arrive and be very dilute.

I use to drive pressurized water reactors for a living but I have no real idea what is going on in Japan, and those are apparently boiling water reactors, which makes me double uninformed.

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I think there's one thing that stands out to me. Regardless of the actual situation and what ultimately happens at the nuke plant. If they really were able to safely evacuate 200K people after an 8.9 earthquake...that's phenomenal.

Most of them probably were heading out anyways.....looking for a new home...:(

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Japan denies meltdown at nuclear plant

The Japanese government on Sunday rejected reports that there had been a meltdown at the earthquake-damaged Fukushima I power plant.

There had been no meltdown in reactor No. 3, government spokesman Yukio Edano said. Earlier he had said that a “partial meltdown” could not be ruled out

http://www.thehindu.com/news/international/article1534509.ece

also on fox they now say 450,000 evacuated around the plants

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Japan denies meltdown at nuclear plant

The Japanese government on Sunday rejected reports that there had been a meltdown at the earthquake-damaged Fukushima I power plant.

There had been no meltdown in reactor No. 3, government spokesman Yukio Edano said. Earlier he had said that a “partial meltdown” could not be ruled out

http://www.thehindu....icle1534509.ece

also on fox they now say 450,000 evacuated around the plants

My understanding is that they detected radioactive cesium outside the plant, and cesium is a fission product, meaning there was loss of integrity of at least some of the fuel rods. I don't know who to believe, but if there was cesium, it strongly suggests at least a partial meltdown.

And hydrogen gas, which apparently caused the explosion, is formed when the zirconium cladding reacts with water at unusually hot temperatures, the zirconium oxidizes and forms free hydrogen gas, another indication the reactor was unusually hot.

http://books.google.com/books?id=yFLACMvgyQsC&pg=PA168&lpg=PA168&dq=zirconium+hydrogen+temperature&source=bl&ots=7wcVR4hJY5&sig=hcdLbemUm3y6LV7xBzhd7yZt2pM&hl=en&ei=E8x8TcOUKKeC0QH36NzoAw&sa=X&oi=book_result&ct=result&resnum=5&ved=0CDsQ6AEwBA#v=onepage&q=zirconium%20hydrogen%20temperature&f=false

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Fox has some Joe the nuclear expert on talking about Chernobyl ... Talking about it reaching the west coast of the US.

Got to love the spread of fear. Really helps the situation.

Fox and CNN have both been using their 60 hour MSU certificate weather readers as science experts, and CNN had Bill Nye the Science Guy wondering if 'hydrogen' was a mistranslation of 'helium'.

Getting proffesors in nuclear engineering or nuclear physics or even former NRC staff would be the way to go as far as experts, but scary and telegenic makes better TV, I guess.

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Japan denies meltdown at nuclear plant

The Japanese government on Sunday rejected reports that there had been a meltdown at the earthquake-damaged Fukushima I power plant.

There had been no meltdown in reactor No. 3, government spokesman Yukio Edano said. Earlier he had said that a “partial meltdown” could not be ruled out

http://www.thehindu....icle1534509.ece

also on fox they now say 450,000 evacuated around the plants

And this very well could be the case for reactor #3 so it shouldn't be completely dismissed.

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http://www.tweetdeck...OutTokyo/~ZtPWQ

Live press conference concerning Fukushima Nuclear Plant 2 (11.30pm, Japan time): The second container seems not to be problematic. However, in the third container, the fuel rods are half exposed. They're continuing to pump in seawater.

they were 1/2 exposed hours ago(they said 9 feet last night) so they are still exposed??

if so why isn't the water filling it up?

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Im asking out of ignorance on subject. What is the difference from nuclear weapon fallout in the jet stream coming downwind and a containment vessle breach carryng nuclear fallout in same scenerio? Seems contradictory to me, or is it a different kind of radioactive material?

A nuclear weapon tosses thousands of tons of irradiated material into the atmosphere, while a nuclear reactor leak would only be a danger in the immediate vicinity. Chernobyl was a special case because it was built in a way that was conducive to actually exploding and even then it required a perfect storm of human stupidity to actually explode. I honestly wish people would get over the OMG ATOMZ part of this and focus on what really matters.

edit: Forgot to mention that Chernobyl is the worst nuclear accident in history and still directly killed 50 people. Even if you want to add in nebulous stuff like cancers the number is only around 4k.

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That emergency at the Onagawa plant is likely the result of the above normal radiation readings that were observed about six hours ago and just now filtering through.

well someone isn’t telling the truth..why would they declare an emergency if the radiation is coming from the other plant(which is in a different state a decent ways away)

http://english.kyodo...1/03/77339.html

*Meanwhile, radiation monitored at the Onagawa nuclear power plant in Miyagi Prefecture on the Pacific coast shot up on Sunday, Tohoku Electric Power Co. said, adding that it was likely caused by radioactive substances let out at the troubled Fukushima No. 1 nuclear power plant in Fukushima Prefecture.Radiation levels were very low but about 400 times as high as in normal times, the power supplier said, dismissing the possibility that the Miyagi plant was to blame.

<BR clear=all>

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well someone isn’t telling the truth..why would they declare an emergency if the radiation is coming from the other plant(which is in a different state a decent ways away)

http://english.kyodo...1/03/77339.html

*Meanwhile, radiation monitored at the Onagawa nuclear power plant in Miyagi Prefecture on the Pacific coast shot up on Sunday, Tohoku Electric Power Co. said, adding that it was likely caused by radioactive substances let out at the troubled Fukushima No. 1 nuclear power plant in Fukushima Prefecture.Radiation levels were very low but about 400 times as high as in normal times, the power supplier said, dismissing the possibility that the Miyagi plant was to blame.

<BR clear=all>

It could be a procedural move much like many of the article 10 and 15 announcements that have been picked up and reported on long after they had already been filed.

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When you guys say that the rods were exposed, you mean that they don't have water around them to cool them INSIDE the containment vessel or whatever surrounds them? I first read that and I think they are exposed to the outside air! Whatever the case, these things should start cooling down at some point?

At least this has exposed some glaring problems with site location and backup systems. Japan doesn't really have many choices for energy except import everything (coal/gas/oil) since they have little to no natural resources.

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Fox and CNN have both been using their 60 hour MSU certificate weather readers as science experts, and CNN had Bill Nye the Science Guy wondering if 'hydrogen' was a mistranslation of 'helium'.

Getting proffesors in nuclear engineering or nuclear physics or even former NRC staff would be the way to go as far as experts, but scary and telegenic makes better TV, I guess.

Bill Nye? Scary I guess... not very telegenic

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