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Video of reactor 1 at Fukushima plant

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Re: Video of reactor 1 at Fukushima plant

#11
post #2

Is it exploding, or are they doing a pressure release?

That doesn't look like a very controlled pressure release. edit: BBC says it's an explosion but article is completely devoid of details: http://www.bbc.co.uk/news/world-asia-pacific-12720219

CNN too, http://edition.cnn.com/2011/WORLD/asiapcf/03/12/japan.nuclea...

Re: Video of reactor 1 at Fukushima plant

#12
post #8

http://news.google.com/news/more?ncl=d_LFixACgsQEvVMNHMag3MA... There is almost guaranteed significant radiation release. quote from slashdot: The outer walls of the Reactor 1 building have partially blown off, leaving only what looks like a steel frame. NHK is saying that a sensor within 5km of the plant is detecting radiation levels approaching 1015 microsieverts - that is apparently a year's worth of radiation exp…

[deleted]

Re: Video of reactor 1 at Fukushima plant

#13
post #9

Kyodo News agency said radioactive caesium had been detected near the site, quoting the Japanese nuclear safety commission. Radioactivity rose 20-fold outside, reports said. (EDIT: this was before the explosion) The plant "may be experiencing nuclear meltdown", Kyodo and Jiji reported before the explosion, while public broadcaster NHK quoted the safety agency as saying metal tubes that contain uranium fuel may have m…

"Chief cabinet secretary Yukio Edano has told a press conference that he cannot confirm that the explosion at the nuclear power plant was the reactor, saying details of the incident remained unclear. He said authorities were prepared for the worst emergency but urged people to remain calm and not to listen to rumours. He also asked them to conserve electricity."

http://www.guardian.co.uk/world/blog/2011/mar/12/japan-tsuna...

Re: Video of reactor 1 at Fukushima plant

#15
post #10
post #2

Is it exploding, or are they doing a pressure release?

it looks to me like a still-standing structure completely disappeared. watch the replay a couple times. there's a white building not unlike 2 other to the right, is partially covering a lightning rod. when you see the shockwave, it's no longer there, at all.

This picture just appeared on Wikipedia, of which I am guessing is the building that may or may not be the one that possibly exploded. Maybe someone more knowledgable than myself can identify what the building is used for. The 2011 Sendai earthquake article says " the outer structure of reactor number 1's containment building had blown off, releasing a large cloud of dust and vapour."

http://en.wikipedia.org/wiki/File:2011-03-12_1800_NHK_S%C5%8...

http://en.wikipedia.org/wiki/2011_Sendai_earthquake_and_tsun...

Re: Video of reactor 1 at Fukushima plant

#16
post #9

Kyodo News agency said radioactive caesium had been detected near the site, quoting the Japanese nuclear safety commission. Radioactivity rose 20-fold outside, reports said. (EDIT: this was before the explosion) The plant "may be experiencing nuclear meltdown", Kyodo and Jiji reported before the explosion, while public broadcaster NHK quoted the safety agency as saying metal tubes that contain uranium fuel may have m…

Is 20-fold increase in radioactivity actually hazardous? I was under the impression dangerous levels of radiation are many, many times above normal background radiation and typical 'acceptable' levels of exposure.

See http://www.geigercounters.com/Danger.htm for example. Occupational acceptable exposure is 25x that of non-occupational.

Re: Video of reactor 1 at Fukushima plant

#18
post #15
post #10

Earlier quoted context omitted.

it looks to me like a still-standing structure completely disappeared. watch the replay a couple times. there's a white building not unlike 2 other to the right, is partially covering a lightning rod. when you see the shockwave, it's no longer there, at all.

This picture just appeared on Wikipedia, of which I am guessing is the building that may or may not be the one that possibly exploded. Maybe someone more knowledgable than myself can identify what the building is used for. The 2011 Sendai earthquake article says " the outer structure of reactor number 1's containment building had blown off, releasing a large cloud of dust and vapour." http://en.wikipedia.org/wiki/Fil…

I have no clue what's going on (and I Am Not An Engineer), but I'm fairly sure that in this photo

http://upload.wikimedia.org/wikipedia/commons/e/e8/Fukushima...

The longer, rectangular buildings on the seaside are the turbine halls, and the square buildings next to them (in the inland direction) are the containment buildings.

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