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Fukushima Daiichi nuclear disaster

OK so an employee spotted a new fire at 5:45am, but it was not seen half an hour later, and they cant get close to it. It is not known when this fire started, but as Ive mentioned previously the site radioactivity readings went up at about 11PM which may or may not be a coincidence.

TEPCO appears to have reported that estimated 70% of fuel rods damaged at reactor 1, and 33% at reactor 2.
 
BBC said:
2249: Officials said the fire new erupted, or reignited, because a blaze at the plant earlier had not been extinguished.

BBC said:
2327: Minoru Ogoda, a spokesman for the Japanese nuclear safety agency, tells AFP: "We have received information from [the Tokyo Electric Power Company] that the fire and smoke is now invisible and it appears to have gone out of its own accord."

:hmm:
 
China syndrome was first coind in 1979 in the film with the same name staring Jack Lemon and was hysterically croaked about during the 3 mile island accident and there is no way at all it could happen. To understand what a nuclear meltdown is I searched the internet to find the answers where I discovered this excellent document http://wapedia.mobi/en/Nuclear_meltdown.

It's easy to get carried away with this stuff because of how dramatic the words nuclear reactor meltdown sound. The biggest concearn are the radiation leaks and ecological issues regarding what sorts of elements and isotopes are being emitted from the plant. All very horrific and I echo what yardbird said. I have never seen such a terrible incident in my entire life and I hope that I don't have to see such tragedy again, ever.
 
0029: Tokyo Electric Power Company (Tepco) says it will be extremely difficult to spray water from a helicopter to cool down a storage pool for spent nuclear fuel in the No.4 reactor at the Fukushima Daiichi plant. Earlier Japanese news agency Kyodo reported that the storage pool could be boiling, while Tepco said readings showed high levels of radiation, making the building inaccessible.

I think they feared this... the pilot passed out from the high radiation levels.
 
I'm really becoming very concerned about the meltdown currently occuring and i think everyone is estimating the danger. Levels of exageration and politically motivated hysteria are reaching critical mass accross the media in the london area. There is a serious danger that the dramatic and sudden increase in the levels of misplaced self rightousness and pompousity will result in a chain reaction that will be unstoppable and lead to a huge explosion of ingorance that will spread throughout the entire country.

Mobs made up of crazed members of the public will descend on nuclear power stations around the country bearing flaming torches like the villagers from hammer horror dracula and frankenstein films and demand that each power station be torn down and replaced by a single casio solar powered pocket calculator from the mid 1980's and one of those 12 inch tall plastic windmills like the ones you used to get from the seaside when you went on a day trip. Both these devices will be wired up to the national grid to provide a green, sustainable, cardon freindly (please feel free to insert the meaningless buzz word of your choice here) source of energy.

It will also avert the very real threat of giant slugs, mutated by nuclear radiation so that they have grown to the size of houses, rampaging (very slowly) through our cities, terrorising the population and eating all the lettuce in tesco's so there is none left for us.

Compared to the minor side issues of towns wiped off the map and thousands missing, focusing on the temperature of a nuclear reactor is whats really important and doesnt show any media bias or prejudice on an issue of contention whatsoever.
 
Dont think I had heard of the following possible fate of the unit 4 fuel rods before, though apparently this is what the company have now mentioned today in Japan:

Flames were no longer visible after about 30 minutes, however, said TEPCO, the plant operator, adding that it is considering spraying boric acid by helicopter to prevent the reactor's spent nuclear fuel rods from reaching criticality again, restarting a chain reaction.

''The possibility of recriticality is not zero,'' TEPCO said Wednesday as it announced the envisaged step to control the situation.

Also sounds like there may be new images of smoke rising from the plant this morning.
 
I'm really becoming very concerned about the meltdown currently occuring and i think everyone is estimating the danger. Levels of exageration and politically motivated hysteria are reaching critical mass accross the media in the london area. There is a serious danger that the dramatic and sudden increase in the levels of misplaced self rightousness and pompousity will result in a chain reaction that will be unstoppable and lead to a huge explosion of ingorance that will spread throughout the entire country.

Mobs made up of crazed members of the public will descend on nuclear power stations around the country bearing flaming torches like the villagers from hammer horror dracula and frankenstein films and demand that each power station be torn down and replaced by a single casio solar powered pocket calculator from the mid 1980's and one of those 12 inch tall plastic windmills like the ones you used to get from the seaside when you went on a day trip. Both these devices will be wired up to the national grid to provide a green, sustainable, cardon freindly (please feel free to insert the meaningless buzz word of your choice here) source of energy.

It will also avert the very real threat of giant slugs, mutated by nuclear radiation so that they have grown to the size of houses, rampaging (very slowly) through our cities, terrorising the population and eating all the lettuce in tesco's so there is none left for us.

Compared to the minor side issues of towns wiped off the map and thousands missing, focusing on the temperature of a nuclear reactor is whats really important and doesnt show any media bias or prejudice on an issue of contention whatsoever.

At this point am I supposed to LOL or say I'm indescribably sad that nature has wreaked such aggression on the people of Japan but we as humans have worsened this disaster whether we accept that or not by accepting nuclear power without properly considering the consequences?
 
Oh bollocks, Ive now seen the footage that was recorded a short time ago, its rather blurry but there seem to be very large quantities of smoke or steam coming from the plant. First images I have seen from there since well before the explosions at unit 2 and 4.
 
Seems they have also changed the worker exposure rules so that workers are allowed to receive up to 250 millisieverts.
 
Both a bit more footage and a couple of breaking headlines from Kyodo seem to suggest that the smoke that is being seen is coming from unit 3 rather than unit 4.

Its not clear to me how long this smoke or steam has been billowing, since Ive no idea if we got no footage yesterday because there was nothing to see, or because the tv company didnt have the ability to capture any for a day for some reason. But at least the tv images force the TEPCO company to make some sort of statements about this.
 
"The workers suspended further operations and evacuated."

fuck - never before have I hoped more that CNN have got it wrong... :(

edit: btw my mate's in Tokyo so I'm not just avidly following this for nothing....

The workers have gone and there is "white smoke" rising, chap on BBC News reckons that's steam, probably full of radiation.

really not looking good now.
 
The Japanese government bloke in his recent press conference raised the possibility that containment at reactor 3 had been damaged. Reactor 3 looked quite a mess after the very large explosion there, Im almost surprised its taken this long for further developments at this reactor :(
 
Japan-reactor-006.jpg
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It's unusually cold and rainy here in Burma today, and there are rumours flying around that it's 'acid rain'. People are genuinely scared.
 
Professor David Hinde, head of the department of nuclear physics at the Australian National University:

It is clearly a serious situation now because there is no containment for those spent fuel pools… My feeling is that they are probably a more serious issue now than the reactors, [where] there's at least a degree of containment remaining.

Spent fuel rods are strongly radioactive and the water above them shields against that radiation so as long as the water level is sufficiently high – you can walk up to the edge of the pool and pour a bucket of water in. Once it is even close to the top of the rods the levels are too high to approach the pool, which is clearly what has happened in unit 4.
 
Anyone else think that being protected from radiation by a bit of water is utterly inadequate. Isn't there anything better or is that too expensive or something?
 
What amazes me is that they built a reactor on the coast with a massive faultline just off shore and didnt think to check that in the event of a tsunami that the diesel generator pumps would be operable. I mean seirously - that's gross negligence unless other factors come to light that excuse the reason why this didnt work properly.

Build them off ground, build them in a sealed watertight container - do something but dont build them on ground level off the shore knowing flooding would affect them.
 
Guardian

Kyodo news has a slightly worrying update, in a breaking news item on its website – the military helicopters seen over the Fukushima nuclear plant (8.06am) have been unable to drop any water "due to high radiation".
 
3 looked in a bad state in that picture, and 4 also in worse state than previously described. I went and found latest satellite images and they confirm this rather clearly. Also note the small hole in number 2 & associated smoke/vapour release from the area - I suppose they may have done this deliberately to allow release. Also possible that 2 and 4 are located in opposite locations to what I am assuming. It still seems possible to me that some vapour has been escaping number 3 ever since it exploded, but a days gap in satellite & tv images makes it impossible to be sure.

5530841229_ce48e3518d.jpg
 
3 looked in a bad state in that picture, and 4 also in worse state than previously described. I went and found latest satellite images and they confirm this rather clearly. Also note the small hole in number 2 & associated smoke/vapour release from the area - I suppose they may have done this deliberately to allow release. Also possible that 2 and 4 are located in opposite locations to what I am assuming. It still seems possible to me that some vapour has been escaping number 3 ever since it exploded, but a days gap in satellite & tv images makes it impossible to be sure.

5530841229_ce48e3518d.jpg

Where can you find latest satellite photos?
 
http://www3.nhk.or.jp/daily/english/16_36.html

Japan's science ministry has observed radiation levels of up to 0.33 millisieverts per hour in areas about 20 kilometers northwest of the quake-damaged Fukushima Daiichi nuclear power plant.

Experts say exposure to such radiation for 3 hours would result in absorption of 1 millisievert, or the maximum considered safe for 1 year.

The ministry gauged radiation levels for 10 minutes from 8:40 PM local time on Tuesday at 3 places in Fukushima Prefecture, whose residents are being instructed to stay indoors. The measurements produced readings as low as 0.22 millisieverts per hour.

It is not known whether these levels have changed since the measurements.
A former chief of the Radiation Effects Research Foundation, Shigenobu Nagataki, said radiation at such levels does not immediately affect human health. But he said that if such levels continue to be observed, authorities must review ways to evacuate people.

The ministry said it also observed maximum radiation levels of 0.0253 millisieverts in areas 30 to 60 kilometers from the plant on Wednesday morning. The levels are slightly higher than normal.
 
What amazes me is that they built a reactor on the coast with a massive faultline just off shore and didnt think to check that in the event of a tsunami that the diesel generator pumps would be operable. I mean seirously - that's gross negligence unless other factors come to light that excuse the reason why this didnt work properly.

Build them off ground, build them in a sealed watertight container - do something but dont build them on ground level off the shore knowing flooding would affect them.

They showed other countries with nuclear reactors somewhere last night. California was one of them and that has two reactors. They're still awaiting the "big one"
 
What they are not saying is what is the source of the radiation? Caesium? Iodine? Uranium? Radioactive gases?

Clearly some of these are more toxic than other. The gases probably have limited 1/2 life but others live on forever and are easily ingested as this stuff is pretty poisonous and hard if not impossible for the body to expel.

Once its out there in the environment its totally impossible to remove.
 
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