Japan Earthquake

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LesAdieux

Junior Member
Japan quake: Huge explosion at Fukushima nuclear plant

we've been told all along that things like this won't happen in a PWR, and six hours ago experts were still calm, what the hell is going on?
 

AssassinsMace

Lieutenant General
March 12, 2011
Explosion Heard at Damaged Japan Nuclear PlantBy MATTHEW L. WALD
WASHINGTON — Japanese officials issued broad evacuation orders on Saturday for people living near two nuclear power plants whose cooling systems broke down as a result of the earthquake. The officials warned that small amounts of radioactive material were likely to leak from the plants.

Japanese media reported the sound of an explosion at one of the plants. Reuters quoted Jiji news agency as saying there had been an explosion at one of the plants — the 40-year-old Daiichi number one reactor — and television footage showed vapor rising from the plant about 150 miles north of Tokyo. The country’s nuclear safety agency did not confirm the reported incident.

The power plants, known as Daiichi and Daini and operated by Tokyo Electric Power, experienced critical failures of the cooling systems after the plants were shut down, as they were during the quake.

Ryohei Shiomi, an official with Japan’s nuclear safety commission, said that a meltdown was possible at one of the two Daiichi reactors, The Associated Press reported. Japanese television reported that the country’s Nuclear and Industry Safety Agency said it had detected cesium near one of those reactors.

An agency official said that a valve had been successfully opened to reduce pressure inside that reactor.

Naoto Sekimura, a professor at Tokyo University, told NHK, Japan’s public broadcaster, that “only a small portion of the fuel has been melted. But the plant is shut down already, and being cooled down. Most of the fuel is contained in the plant case, so I would like to ask people to be calm.”

About 45,000 people were affected by the evacuation order at the Daiichi plant, where those living within a six-mile radius were told to leave. The evacuation of the second plant was for a one-mile radius because “there is no sign that radiation has been emitted outside,” an official said.

Failure of the cooling systems allowed pressure to build up beyond the design capacity of the reactors. Small amounts of radioactive vapor were expected to be released into the atmosphere to prevent damage to the containment systems, safety officials said. They said that the levels of radiation were not large enough to threaten the health of people outside the plants, and that the evacuations had been ordered as a precaution.

Nuclear safety officials focused initially on the Daiichi plant. But by Saturday morning Japan had declared states of emergency for five reactors at the two plants, an escalation that added to worries about the safety of nuclear facilities in the quake-prone Japanese islands.

The Daiichi and Daini plants are 10 miles apart in Fukushima Prefecture, about 150 miles north of Tokyo and close to the quake’s epicenter off the coast.

The plants’ problems were described as serious but were far short of a catastrophic emergency like the partial core meltdown that occurred at the Three Mile Island plant near Harrisburg, Pa., in 1979.

A Japanese nuclear safety panel said the radiation levels were 1,000 times above normal in a reactor control room at the Daiichi plant. Some radioactive material had also seeped outside, with radiation levels near the main gate measured at eight times normal, NHK quoted nuclear safety officials as saying.

The safety officials said there was “no immediate health hazard” to residents from the leaks, which they described as “minute,” and people were urged to stay calm.

The emergency at the Daiichi plant began shortly after the earthquake struck on Friday afternoon. Emergency diesel generators, which had kicked in to run the reactor’s cooling system after the electrical power grid failed, shut down about an hour after the earthquake. There was speculation that the tsunami knocked the generators out of service.

Twenty hours later, the plant was operating in a battery-controlled cooling mode. Tokyo Electric said that by Saturday morning it had installed a mobile generator at Daiichi to ensure that the cooling system would continue operating even after reserve battery power was depleted. Even so, the company said it was considering a “controlled containment venting” in order to avoid an “uncontrolled rupture and damage” to the containment unit.

“With evacuation in place and the oceanbound wind, we can ensure the safety,” a nuclear safety official, Yukio Edano, said at a news conference early Saturday.

It was not clear, however, how long the cooling systems could continue to function in emergency mode or when normal power supplies could be restored.

Two workers were reported missing at the Daiichi plant, but the company did not explain what might have happened to them.

A pump run by steam, designed to function in the absence of electricity, was adding water to the reactor vessel, and as that water boiled off, it was being released. Such water is usually only slightly radioactive, according to nuclear experts. As long as the fuel stays covered by water, it will remain intact, and the bulk of the radioactive material will stay inside. If the fuel is exposed, it can result in a meltdown.

The reactors at the two plants shut down when the earthquake began at 2:46 p.m. Friday. At the Daiichi plant’s Reactor Unit 1, when the emergency generators shut down, pressure began to rise in the reactor, leading operators to vent it.

During much of the early morning on Saturday, safety officials focused on getting emergency power supplies to the Daiichi plant to restore the normal cooling function.

Secretary of State Hillary Rodham Clinton, speaking in Washington, said that American military planes had already delivered “coolant.” But American military officials indicated that while they were prepared to help Japan grapple with any problems related to its nuclear facilities, they had not been asked to do so.

Japan relies heavily on nuclear power, which generates just over one-third of the country’s electricity. Its plants are designed to withstand earthquakes, which are common, but experts have long expressed concerns about safety standards, particularly if major quake hit close to a reactor.

One major concern is that while plant operators can quickly shut down a nuclear reactor, they cannot allow the cooling systems to stop working. Even after the plant’s chain reaction is stopped, its fuel rods produce about six percent as much heat as they do when the plant is running. The production of heat drops off sharply in the following hours, but continued cooling is needed or the water will boil away and the fuel will melt, releasing the uranium fragments inside.

Heat from the nuclear fuel rods must be removed by water in a cooling system, but that requires power to run the pumps, align the valves in the pipes and run the instruments. The plant requires a continuous supply of electricity even after the reactor stops generating power.

With the steam-driven pump in operation, pressure valves on the reactor vessel would open automatically as pressure rose too high, or could be opened by operators. “It’s not like they have a breach; there’s no broken pipe venting steam,” said Margaret E. Harding, a nuclear safety consultant who managed a team at General Electric, the reactors’ designer, that analyzed pressure buildup in reactor containments. “You’re getting pops of release valves for minutes, not hours, that take pressure back down.”

Civilian power reactors are designed with emergency diesel generators to assure the ability to continue cooling even during a blackout. Many reactors have two, assuring redundancy; some have three, so that if one must be taken out of service for maintenance, the plant can still keep running.

It was not immediately clear how many diesel generators there are at Daiichi, but the operators reported earlier in the day that they were not working, prompting the evacuation.

Daiichi, which is formally known as Fukushima Daiichi Nuclear Power Station, was designed by General Electric and entered commercial service in 1971. It was probably equipped to function for some hours without emergency diesel generators, said David Lochbaum, who worked at three American reactor complexes that use G.E. technology.

Mr. Lochbaum, who also worked as an instructor for the Nuclear Regulatory Commission on G.E. reactors, said that such reactors were equipped to ride out interruptions in electrical power by using pumps that could be powered by steam, which would still be available in case of electric power failure. Valves can be opened by motors that run off batteries, he said. Plants as old as Fukushima Daiichi 1 generally have batteries that are large enough to operate for four hours, he said.

After that, he said, the heat production in the core is still substantial but has been reduced. The heat would boil away the cooling water, raising pressure in the reactor vessel, until automatic relief valves opened to let out some of the steam. Then the valves would close and the pressure would start building again.

If the cooling system remains inoperative for many hours, the water will eventually boil away, he said, and the fuel will begin to melt. That is what happened at Three Mile Island. In that case, the causes were mechanical failure, operator error and poor design, according to government investigators.


Yasuko Kamiizumi contributed reporting from Tokyo, and Ken Belson from New York.
 

druid84

New Member
Well on Taiwanese TV they've said if this quake had occured in Tokyo the city would have been levelled........Don't know how much of that is true but I'm sure this greatly increased the anxiety of those living in Tokyo. As for the physical stress caused on the plates underneath Japan, I haven't heard anything about that.
 

Mr T

Senior Member
The situation at the nuclear plant is looking much safer than it was some hours ago. Falling pressure, no breach of the reactor, radiation levels falling.
 

bd popeye

The Last Jedi
VIP Professional
Some fresh quake damage video.

[video=youtube;BPEWBhYGYEY]http://www.youtube.com/watch?v=BPEWBhYGYEY[/video]
 

tphuang

Lieutenant General
Staff member
Super Moderator
VIP Professional
Registered Member
It's really sad to see what's happening. Let's hope that the nuclear plant radiation is contained. And probably most importantly, that Japan can find that missing village and deliver necessities to those who are stranded.

In many ways, I was just really impressed by how well Japan actually handled this. If an earthquake this large happened in China, you'd have 1/4 million people dying easily. It's really amazing to see how those buildings in Tokyo withstood so much shaking. If you remember that everything in Haiti got wiped out with a 7.0 magnitude earthquake, The intensity in Tokyo is probably 10 to 50 times stronger than that and it looked like the major buildings all stayed afloat. Considering how bad it could have been, I really solute the Japanese for their engineering, their warning systems and their training for this. Japanese people are really amazing. I hope the rest of the world that sits on these danger areas can go and learn from the Japanese.
 

siegecrossbow

General
Staff member
Super Moderator
A quick question regarding the 28 F-2 planes that were washed away by the flood? Did the pilots not have enough time to respond or were the runways damaged by the quake?
 

Blitzo

Lieutenant General
Staff member
Super Moderator
Registered Member
A quick question regarding the 28 F-2 planes that were washed away by the flood? Did the pilots not have enough time to respond or were the runways damaged by the quake?

I think that when a massive earthquake like this happens the last thing on people's minds -- even for the military -- is to save their replaceable hardware.
 

tres

New Member
I guess we've all known what happened by now.

I hope China can show her support by lending a helping hand at this critical time. This will help bridge the friendship between both nations that earthquakes can't shake.

China is sending a team to help, but here are what Japanese are saying about it
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If you read Chinese or Japanese, you now know how these people are, draw your own conclusions.

【日中】中国政府、日本に救援?医療チームの派遣を申し入れ―中国[03/12] 中国政府申请对日派遣救援医疗队伍
2 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:11:09.78 ID:SOnNpmHk
邪魔なだけになりそう。
感觉来了也只是碍事

3 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:11:35.15 ID:33fmd1bm
救援チームがそのまま住み着きそう???。
感觉救援队伍来了不会就这么住下来了吧……
4 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:13:26.48 ID:kEIHzGRQ
中国製偽薬とかマジ勘弁
中国制的假药什么的真的受不了
5 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:14:16.60 ID:g1EqzgqV
毒入り
有毒
6 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:15:37.87 ID:B9h+Kx3y
被災者の人の気持になって書き込めよ
これは歓迎しよう、俺達は安全な場所でネットが出来てるだけ幸せだ
考虑下受灾人的心情再写啊,欢迎,我们能在安全的地方上网已经够幸运的了
7 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:15:43.35 ID:IVlKFQ2V
これを機に日本を潰す気なのか???
想趁着这个机会打败日本吗……
8 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:17:02.17 ID:XluhRDc3
人民解放軍を送り込んでくるぞ。
会把人民解放军送过来的啊!
民主党はすでに南朝鮮のクソどもを受け入れて口てい疫をバラマキにかかってる!

9 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:17:17.83 ID:2Qzl+p8/
中国の救援チーム、帰国時に、全員行方不明になりそうwww
感觉中国的救援队伍回国的时候会全体失踪
10 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:17:30.78 ID:3qNhzOLp
中ゴキ人てのは善意ヅラの奥に凶悪な下心を隠して近づいてくる連中だぞ
絶対に入国させちゃいかん
中国蟑螂是一群装出一副好心的样子其实心怀不轨的家伙
绝对不能让他们入境
(日本愤青常用的污蔑词还有北京原人、シナ人=支那人、ヤクザ国家=流氓国家)

11 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:17:39.90 ID:/6uvolHH
???。
不需要
12 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:18:37.87 ID:fRWRBk7l
>>7 日本は救援チームに潰されるのか?
日本会被救援队打败吗
13 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:18:58.21 ID:JpprVHyS
特アは拒否でおk
比较火星看不懂
14 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:19:08.23 ID:fP0Q7rwI
中国は自国内に前回の地震の被災者とかまだいるだろ
そっち優先してあげて下さい。
中国自己国内还有上回地震的受害者吧
请优先处置那些人吧
15 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:19:57.21 ID:WAlO3D2H
断ったほうがいいじゃないのかね。
こいつら救援?医療の名目で、絶対にスパイ行為をするぞ。
我看还是拒绝的比较好吧
这些家伙打着救援医疗的名目,绝对会进行间谍行动的
16 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:22:01.01 ID:33fmd1bm
救援チーム送るんだからODAは今後も?a href="http://www.lkong.net/home.php?mod=space&username=続してね。" target="_blank">@続してね。
ってのが本音だろうし、そう要求してくるんだろうな???。
因为派遣了救援队伍今后好继续接受ODA吧
说来这才是真正的意图,肯定会这样要求的
17 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:24:25.94 ID:7nvFnV3B
韓国は5人派遣、救助犬2匹だってよw
その程度で何しにくんだよw
来なくていいよ朝鮮人
韩国派了5个人2条狗
这么点人来干嘛的
用不找来了朝鲜人
18 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:24:58.03 ID:TBGl0lWl
自衛隊の準備もできてないのに
いらんよ??
自卫队还没有做好准备的说
不需要了
19 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:25:54.10 IDnhDJ9dz
今日死刑にしたばかりの、ピッチピチの臓器を持っていくアル
把今天刚处死刑的、新鲜的内脏拿去(???不知道什么意思)
20 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:26:07.19 ID:vr5UHCo+
治安維持を名目に、占領?支配するのは中国の初期設定だからな。
因为中国的初期设定就是以治安维持的名义进行占领和支配
自分のところの地震に、集中して下さい。m(--)m
请集中精力对待自己那块的地震吧
21 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:27:08.91 IDr8oVAaH
安心しろ
放心吧
屈強な米兵が守ってくれる
有坚强的美国大兵保护我们呢
22 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:30:35.01 ID:B8Qd9Wnd
普通ならありがたいのに特アだと喜べない不思議
一般来说应该很感激才对 结果却不怎么高兴 真是不可思议
23 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:31:08.44 ID:OXsSOjFV
>>17
これが台湾とかだったら、マスゴミは何も言わないんだろうね
如果来的是台湾之类的 媒体多半什么都不会报道吧
24 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:33:39.25 ID:NuetvRxC
医療器具とかちゃんと殺菌してなそう
ただでさえ衰弱してる人にダメージが???
感觉医疗用具什么的都没有好好杀菌
别给本来就衰弱的人造成更大的伤害啊……

25 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:36:12.23 IDo7AKy8Q
自国の地震対策してろよ。
四川の事後処理もまだ終わってないだろ。
管好自己吧
四川的时候处理还没有做完吧

26 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:47:27.86 ID:z6suhFov
中国人は炊き出しが出来るよ。一方、ヤツらは漬物だぞ

27 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:51:09.98 IDX41de0O
一度、海外で勉強すると、中華思想洗脳がとけるやもしらん。
去留学一次,大概就能解开中华思想(这是神马玩意儿)的洗脑吧
28 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:51:38.32 ID:8mVabn7g
気仙沼のフカヒレは大切だから当然。
???

29 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 13:54:29.71 ID:YA3pDnHm
う~ん四川で自国もgdgdなのに???、軍事レベルの詳細な地形データを盗み出される悪寒??!
嗯 本国四川都一团糟…… 军用级的详细地形资料要被盗走了(话说不知道是谁派了救援队跟来的记者比医疗人员还多) 寒
30 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 14:01:19.43 IDieYEqvA
>>3
医療技術があるなら結構じゃないか。
僻地医療が活躍してもらおう。
有医疗技术的话不是很好吗
让他们到乡下去好好发挥吧
31 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 14:10:34.48 ID:vfuqdQPj
◆今すぐすべき事◆
现在必须做的事情
韓国、中国等々の【伝染病蔓延国】からの派遣は
日本国民にとって命取り!
来自韩国、中国等传染病蔓延国的派遣对日本国民来说是致命的
今からでも関係各所(各政党、議員、省庁)に断りの要請を!
现在立刻向相关部门(各政党、議員、省庁)要求拒绝他们!
32 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 14:31:38.60 ID:toRDYPar
支援はいらないから、ODAなくすべき
不要什么支援了,把ODA取消就好了
33 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 14:47:23.92 ID:+xbtbeHV
民主化運動で戦車のミンチ肉と化した遺族にもそれぞれお見舞いと哀悼の電報を打てよ
34 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 14:49:42.53 IDcEYtTyD
中国は7000億のODAを返すだけで十分だ。
中国把7000亿的ODA还清就足够了
35 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 14:58:26.72 IDx0nngmJ
恩を返してくれ
好好报恩吧
36 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 15:09:16.02 ID:kXJxcCI7
支援はいらないから
不法滞在や刑務所にいる中国人を引取ってくれ
不需要什么支援了
请把非法滞留还有刑务所得中国人领走吧

37 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 15:23:18.34 ID:Vsd9KHLd
火事場泥棒するから、お断りします。
他们会趁乱偷鸡摸狗的,拒绝他们来

38 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 16:30:04.37 ID:GxxlEKrd
支援物資が爆発するんですね
分ります
支援物资会爆炸吧
明白的
39 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 16:30:42.61 ID:OREU4Fzp
?????医療関係はありがたいね。

40 :いしまたらって何? ◆ZeJVa3PawU :2011/03/12(土) 16:37:17.81 ID:1mBYiOm5
断れ!! 破壊工作ばっかりしてやがる。
拒绝!!尽干些破坏工作
41 :気弱なクリオネ ◆HPbPYoY6YI :2011/03/12(土) 16:38:27.33 ID:0j4GqCJx
韓国同様こちらもお断り
和韩国一样这边也拒绝
42 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 16:39:06.60 ID:OREU4Fzp
……他人事だから住み慣れた土地に対する愛着抜きの考えだが
正直、民間か企業レベルでの被災地の買い入れとか話の口があればあり難い。

43 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 16:40:05.87 ID:2DuIse43
>>17
大挙して押し寄せるより遥かにマシ
わんこなら役に立つ。
狗的话能派上用场
44 :六代目浜田伝右衛門 ◆AKUMA/.c.o :2011/03/12(土) 16:40:53.40 ID:KvuWgjgz
>>39
アミバ様が来ても困ります。

45 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 16:43:21.41 ID:OREU4Fzp
津波が出た時点で韓国が考えているであろう
人命救助が必要な事態とは…違う対応が必要になってるのだが
正直、同じ速さで支援物資が届いたなら泣いて感謝するだろね。
46 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 17:00:10.13 ID:Xz8GjR1/
中韓の火事場泥棒の入国禁止しろよ
中韩浑水摸鱼的小偷们禁止入国
47 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 17:01:09.31 ID:8Fpq2wQJ
中国、朝鮮はイラネぇ!!
中国朝鲜不需要啦
てめェの国の生活保護受給者引き取れ!!
把你们国家那些在这里领社保的带打回去!
48 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 17:01:40.22 ID:H9FFlKMu
なに注射されるか、どんな治療されるかワカランから逆に怖いな
不知道会被注射什么,不知道会被怎样治疗,反而觉得害怕
49 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 17:05:59.04 ID:lxMV4qLH
中国の医療チームなんか受け入れるなよ。ほとんど2次災害だろ。
别接受中国的医疗队伍喔,基本上就是2次灾害啊

50 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 17:17:41.89 ID:TaZ8D3tw
民主党ならほいほい受け入れそうだ。
中国からなら、他の国の方が良いと思うのだが。
イギリスあたりは準備してなかったっけ?
民主党的话感觉会点头哈腰的接受
比起中国还是其他国家比较好
欧洲那边没有准备吗
51 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 17:19:34.57 ID:nvCXAObz
福島原発で爆発音と煙が上がったから来ないほうがいいよ
福島原子发电站爆炸烟尘漫天的,别来比较好
52 :<丶`?′>(′?ω?`)(`ハ′  )さん:2011/03/12(土) 17:24:25.27 ID:41SucFU7
救援というより
火事場泥棒に来るというイメージしか???
给人的印象与其说是救援
还不如说是来浑水摸鱼偷东西的……
 
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