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Japan Nuclear Crisis Part II


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If there were better protective suits this would be a lot easier to deal with. They really, really need to get back into what's left of the buildings and start putting things back together. Maybe in the future a better protective suit could be invented.

An inch of lead is required to reduce the amount of gamma ray radiation to a tenth its initial strength. If there is high enough radiation, even reducing it to 10% may not be enough. And a suit built of an inch of lead all around would be a pain to wear.

I can't find the tenth thickness for borated polyethylene, the usual shielding material for neutrons.

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one more thing--I am glad the Japanese are thinking outside the box. Using riot control trucks is a great idea, however talked with a prof here at work, the water hitting a hot metal rod could do a couple of things, the rod may contract at the point that it is hit with water causing the rod to bend and contort. Also the covering on the rod may break off.

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Latest NISA report. It seems to indicate the rods are only partially covered with water, and the pressure of containment vessel of #2 reactor is 75 kpa?

http://www.nisa.meti...n20110317-2.pdf

Interesting read. BUT, I noticed a couple oddities, and wonder why these two unit write ups are NOT in date/time order of events. As to where the other unit write ups are.. And the timing of the Unit 4 events are all over the place.

The bold items are those which occurred first.

<Unit 1>

・ Seawater was injected to the Containment Vessel via the Fire Extinguishing System Line (Started up 11:55 March 13th)

→Temporary interruption of the injection (01:10 March 14th)

The sound of explosion in Unit 1 occurred. (15:36 March 12nd)

・ Seawater is being injected as of 04:00 March 17th.

<Unit 4>

・ It was confirmed that a part of wall in the operation area of Unit 4 was damaged. (06:14 March 15th)

・ The fire at Unit 4 occurred. (09:38 March 15th) TEPCO reported that the fire was extinguished spontaneously. (11:00 March 15th)

The temperature of water in the Spent Fuel Storage Pool at Unit 4 had increased. (84 ℃ at 04:08 March 14th)

・ The fire occurred at Unit 4. (5:45 March 15th) TEPCO reported that no fire could be confirmed on the ground.(06:15 March 16th)

・ The water injection is suspented as of 04:00 March 17th.

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Interesting read. BUT, I noticed a couple oddities, and wonder why these two unit write ups are NOT in date/time order of events. As to where the other unit write ups are.. And the timing of the Unit 4 events are all over the place.

The bold items are those which occurred first.

<Unit 1>

・ Seawater was injected to the Containment Vessel via the Fire Extinguishing System Line (Started up 11:55 March 13th)

→Temporary interruption of the injection (01:10 March 14th)

The sound of explosion in Unit 1 occurred. (15:36 March 12nd)

・ Seawater is being injected as of 04:00 March 17th.

<Unit 4>

・ It was confirmed that a part of wall in the operation area of Unit 4 was damaged. (06:14 March 15th)

・ The fire at Unit 4 occurred. (09:38 March 15th) TEPCO reported that the fire was extinguished spontaneously. (11:00 March 15th)

The temperature of water in the Spent Fuel Storage Pool at Unit 4 had increased. (84 ℃ at 04:08 March 14th)

・ The fire occurred at Unit 4. (5:45 March 15th) TEPCO reported that no fire could be confirmed on the ground.(06:15 March 16th)

・ The water injection is suspented as of 04:00 March 17th.

so it was almost boiling 3 days ago....and I beleive that is the last data we have on that ..the IAEA just said they havn't had temp data for that pool for days

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one more thing--I am glad the Japanese are thinking outside the box. Using riot control trucks is a great idea, however talked with a prof here at work, the water hitting a hot metal rod could do a couple of things, the rod may contract at the point that it is hit with water causing the rod to bend and contort. Also the covering on the rod may break off.

Well its either that or do nothing a have a meltdown

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1622: Germany has said it will temporarily move its embassy from Tokyo to Osaka as a "preventative measure", amid ongoing fears over a possible radiation leak, reports AFP. The German foreign ministry said in a statement: "The embassy will not be closed. The ambassador and his staff will continue their work in Osaka. They will be able to continue advising German citizens as well as conducting consular services from Osaka." The country advised its citizens to leave the greater Tokyo area on Wednesday.

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1622: Germany has said it will temporarily move its embassy from Tokyo to Osaka as a "preventative measure", amid ongoing fears over a possible radiation leak, reports AFP. The German foreign ministry said in a statement: "The embassy will not be closed. The ambassador and his staff will continue their work in Osaka. They will be able to continue advising German citizens as well as conducting consular services from Osaka." The country advised its citizens to leave the greater Tokyo area on Wednesday.

Governments aren't helping the Japanese by doing such things. Seems like a massive overreaction. Nothing that we've seen would indicate an evacuation of Tokyo makes any sense at this point.

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so it was almost boiling 3 days ago....and I beleive that is the last data we have on that ..the IAEA just said they havn't had temp data for that pool for days

Time-line reorganized.

<Unit 4>

The temperature of water in the Spent Fuel Storage Pool at Unit 4 had increased. (84 ℃ at 04:08 March 14th)

・ The fire occurred at Unit 4. (5:45 March 15th)

・ It was confirmed that a part of wall in the operation area of Unit 4 was damaged. (06:14 March 15th)

・ The fire at Unit 4 occurred. (09:38 March 15th)

TEPCO reported that the fire was extinguished spontaneously. (11:00 March 15th)

TEPCO reported that no fire could be confirmed on the ground. (06:15 March 16th) (Typo on the date?)

・ The water injection is suspented as of 04:00 March 17th.

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Yeah, it's called an airplane.

Yeah I have no idea why your posts have attracted such vitriol. They're not condescending or uninformative at all. What I meant, which was I assume extremely obvious to anyone who's reading this thread for a purpose other than finding posts to troll, is that I hope they use military aircraft to fly them there rather than tossing them on a commercial airline and hoping there's still a situation to save 2 days from now.

I just don't understand the lack of urgency it seems the Japanese are operating with. They couldn't continue working on the power because there were trucks spraying water? There is hazardous levels of radiation on land right now with a strong wind blowing offshore. Don't they realize it's going to hit the fan when the winds go onshore on Friday?

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They are preparing for the worst. If the japanese government said everyone has to leave tokyo, it would be infeasable and cause some mass panic

exactly, if there really is a problem of radiation in Tokyo in the near future, I bet the Japanese government is weighing the amount of destruction mass panic would bring and the logistics of evacuating over 10,000,000 people versus the slight risk (at this point) of major health problems effecting Tokyo residents.

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There's a lot of focus on Tokyo (people worried about radiation there, followed by NBD people saying that there's no worry about radiation there) -- Japan isn't just Tokyo. There has to be some assumption that the area around the Fukushima plant is going to be uninhabitable for a long long time. How close would you feel comfortable living?

What if the US government one day said, gosh, sorry, everyone within a 50 mile zone around the Crystal River plant in Florida has to evacuate because of an accident. Tampa/St. Pete (90ish miles to the south) might not have radiation levels that would cause illness, but do you think that would then make anything happening in the Crystal River area no big deal?

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There's a lot of focus on Tokyo (people worried about radiation there, followed by NBD people saying that there's no worry about radiation there) -- Japan isn't just Tokyo. There has to be some assumption that the area around the Fukushima plant is going to be uninhabitable for a long long time. How close would you feel comfortable living?

What if the US government one day said, gosh, sorry, everyone within a 50 mile zone around the Crystal River plant in Florida has to evacuate because of an accident. Tampa/St. Pete (90ish miles to the south) might not have radiation levels that would cause illness, but do you think that would then make anything happening in the Crystal River area no big deal?

I agree with you on the Tokyo part. Japan has one of the highest population densities on the planet. losing a few hundred square miles will make a crowded situation even worse.

I wonder what the long term plans would be if this continues to develop like Chernobyl.

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