米放射能専門部隊が訓練公開
米放射能専門部隊が訓練公開 | YouTube
原発事故訓練：日米、初の合同訓練 特殊部隊、除染作業など公開－－米空横田基地 | 毎日新聞
Marines hold exercise in Japan | UPI.com
Facebook がデータセンターをオープンソースにしたわけ
Facebook’s Open Compute: The Data Center is the New Server and the Rise of the Taiwanese Tigers | Joyeur
Because the new box is the datacenter (used to be the PC, now it’s DC), the walls of a datacenter are the chassis and the PC-style servers are just a component in that box, no different than a power supply or a motherboard.
Why Facebook open-sourced its datacenters | Ars Technica
Building Efficient Data Centers with the Open Compute Project | Facebook
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１２ペタバイトのストレージって？
Report: Apple Buying Boatloads of Storage | Data Center Knowledge
Apple Ordered 12PB (!) of Storage on Isilon’s Systems | Storage Newsletter
Report: Apple ordered 12 petabytes of storage | The Loop
Appleが12ペタバイトのストレージを何に使うのか？｜GoGo! Machead!
Scale-up and scale-out | ZDNet
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ラリー・ペイジのグーグル新体制
Exclusive: Google CEO Larry Page completes major reorganization of Internet search giant | Los Angeles Times
Page has been thinking about how to reorganize the company to cut bureaucracy and politicking while speeding up innovation. He may have found his answer in the success of the company’s Android mobile software unit and its video-sharing site YouTube, each of which have thrived as largely autonomous entities.
The reorganization also puts Page firmly in charge of Google and its performance in much the same way Steve Jobs runs Apple.
Google: Marissa Mayer Bypassed As Google Appoints New Head Of Local And Commerce | Silicon Alley Insider
Local and commerce — Jeff Huber
Search — Alan Eustace
Advertising — Susan Wojcicki
Android — Andy Rubin
YouTube — Salar Kamangar
Social — Vic Gundotra
Chrome — Sundar Pinchai
Google CEO Larry Page Shakes Up Google–Who’s Next to Be Impacted? | AllThingsD
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廃炉への道を探る
Toshiba and American Engineers Plan to Take Apart Reactors | NYTimes.com
Yet it is not too soon for a team of engineers from Japan and the United States to begin working on the thorny task of how to dismantle the reactors, four of which are so badly damaged that the plant’s operator has said they will be scrapped.
Already, dozens of engineers from Toshiba, which helped build four of the Fukushima Daiichi reactors, have been joined by experts from the United States to prepare for the decommissioning work, a job so big that the planning needs to start even now, in parallel with the efforts to contain the crisis.
The team includes experts from Westinghouse, whose majority owner is Toshiba; the Shaw Power Group, a civil engineering firm; and the Babcock & Wilcox Company, an energy technology and services company, one of whose specialties is the disposal of hazardous materials.
Two weeks ago, engineers from the American companies started arriving in Japan, where they were briefed about the situation. They moved into a war room at Toshiba’s headquarters that includes offices in a secure part of the building. The rooms are stuffed with desks, computers, whiteboards and dozens of engineers slumped over laptops.
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余震で分かったほかの原発
Aftershock Unnerves a Japan on the Edge | NYTimes.com
東日本大震災：余震震度６強 原発、もろさ再び | 毎日新聞
頼りない命綱安全に疑問 女川原発冷却一時停止 | 河北新報
原子力施設の状況 | 47NEWS
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3.11 後最大の余震
［Japan aftershock caught on camera | YouTube］
停電一時４００万戸 東北６県 | 河北新報
東北の地震観測点、半数近くダウン | YouTube
Aftershocks animation | Tohoku, Japan earthquake | 9.0 Mw | 11 March 2011 | YouTube
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気象庁が放射性物質拡散予測を公開
環境緊急対応地区特別気象センターについて | 気象庁
IAEAからの要請と当庁が作成した資料一覧 | 気象庁
指示されて…気象庁、ようやく拡散予測を公開 | YOMIURI ONLINE（読売新聞）
欧州、放射性物質の拡散予測 気象当局、福島原発事故で | 47NEWS
韓国の一部で臨時休校に、放射性物質含む雨を懸念 | Reuters
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米原子力規制委員会が福島原発事故の極秘分析を作成
U.S. Sees Array of New Threats at Japan’s Nuclear Plant | NYTimes.com
United States government engineers sent to help with the crisis in Japan are warning that the troubled nuclear plant there is facing a wide array of fresh threats that could persist indefinitely, and that in some cases are expected to increase as a result of the very measures being taken to keep the plant stable, according to a confidential assessment prepared by the Nuclear Regulatory Commission.
The document, which was obtained by The New York Times, provides a more detailed technical assessment than Japanese officials have provided of the conundrum facing the Japanese as they struggle to prevent more fuel from melting at the Fukushima Daiichi plant. But it appears to rely largely on data shared with American experts by the Japanese.
Among other problems, the document raises new questions about whether pouring water on nuclear fuel in the absence of functioning cooling systems can be sustained indefinitely. Experts have said the Japanese need to continue to keep the fuel cool for many months until the plant can be stabilized, but there is growing awareness that the risks of pumping water on the fuel present a whole new category of challenges that the nuclear industry is only beginning to comprehend.
The steps recommended by the nuclear commission include injecting nitrogen, an inert gas, into the containment structures in an attempt to purge them of hydrogen and oxygen, which could combine to produce explosions. The document also recommends that engineers continue adding boron to cooling water to help prevent the cores from restarting the nuclear reaction, a process known as criticality.
The document was prepared for the commission’s Reactor Safety Team, which is assisting the Japanese government and the Tokyo Electric Power Company, which owns the plant. It says it is based on the “most recent available data” from numerous Japanese and American organizations, including the electric power company, the Japan Atomic Industrial Forum, the United States Department of Energy, General Electric and the Electric Power Research Institute, an independent, nonprofit group.
Experts worry about the fuel pools because explosions have torn away their roofs and exposed their radioactive contents. By contrast, reactors have strong containment vessels that stand a better chance of bottling up radiation from a meltdown of the fuel in the reactor core.
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