<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          Asia-Pacific

          Robot, drone fail on Japan nuke-plant missions

          (Agencies)
          Updated: 2011-06-25 15:26
          Large Medium Small

          TOKYO?- Two high-tech machines intended to help workers at Japan's tsunami-hit nuclear plant malfunctioned Friday, including a long-awaited Japanese robot making its first attempt to take important measurements in areas too dangerous for humans.

          Robot, drone fail on Japan nuke-plant missions

          A handout picture taken and released June 24, 2011 shows a T-Hawk survey vehicle (C) on the roof of unit No. 2 reactor after it ditched at Fukushima Daiichi Nuclear Power Station in Fukushima prefecture. The small unmanned vehicle, used to help survey the damage and monitor the level of radiation at the plant, crashed onto the roof of reactor after losing control, TEPCO said on Friday. [Photo/Agencies]

          The other machine that failed was a drone helicopter that made an emergency landing on a reactor roof at the Fukushima Dai-ichi nuclear power plant.

          Operator Tokyo Electric Power Co. is trying to cool down three molten reactor cores and stop radiation leaks to end a crisis set off when the March 11 earthquake and tsunami crippled the plant. The job is expected to take several more months, and is complicated by massive amounts of radioactive water that could soon leak into the sea.

          The Quince robot, developed by Chiba Institute of Technology for nuclear and biological disaster relief activity, had ventured out into the Unit 2 reactor building to set up a gauge to measure the contaminated water pooling in the basement. Radioactivity inside the reactor buildings is too high for workers to take measurements there.

          The machine got stuck at a staircase landing and failed to go downstairs, TEPCO spokesman Junichi Matsumoto said. A cable that was supposed to drop a gauge into the basement also malfunctioned.

          The workers retrieved the robot and were going to make adjustments before sending it back in for another try, Matsumoto said. He did not elaborate.

          The other machine that malfunctioned Friday was a T-Hawk drone helicopter, made in the US by Honeywell, that is used to inspect hard-to-access areas of the plant.

          The drone developed engine trouble during a radiation sampling flight and made a remote-controlled emergency landing on the roof of Unit 2 _ the only one of the four damaged reactor buildings that still has a roof, Matsumoto said.

          Matsumoto said photos taken by a camera installed on a water pumping vehicle showed the drone was lying on its side, but neither the aircraft nor the roof suffered major damage.

          The cause of the engine failure was under investigation. Matsumoto said it was not immediately known when or how the drone may be retrieved, but a backup drone can take over the mission.

          TEPCO and the government have said they hope to achieve a cold shutdown of the reactors by January by bringing the core temperatures to below 100 Celsius (212 Fahrenheit.)

          Workers have cooled the reactors and spent fuel by pumping in fresh water, which becomes contaminated with radiation. About 110,000 tons of tainted water have accumulated, and it could start overflowing in early July unless workers get a trouble-plagued water treatment system working properly.

          The system became fully operational a week ago but shut down after a few hours when one of the radiation absorbing cartridges reached its limit much more quickly than expected. Matsumoto said the system, which has since been on test run, has been working better after corrections were made on some valves.

          Goshi Hosono, director of the government's nuclear crisis task force, said the water treatment system, which eventually becomes part of a cooling system, is key to resolving the crisis.

          分享按鈕
          主站蜘蛛池模板: 漂亮人妻被强中文字幕久久| 久久人妻国产精品| 欧美老熟妇乱子伦牲交视频| 亚洲中文字幕日产无码2020| 成人午夜免费无码视频在线观看| 日本黄韩国色三级三级三| 亚洲综合一区二区三区不卡| 午夜在线不卡| 国内不卡的一区二区三区| 国产区二区三区在线观看| 麻豆av一区二区三区| 日韩成人一区二区二十六区 | 久久男人av资源站| 国产男生午夜福利免费网站| 狠狠色丁香婷婷综合尤物| 国产午夜精品福利91| 97精品伊人久久大香线蕉| 国产精品无码AV中文| 亚洲男人AV天堂午夜在| 小姑娘完整中文在线观看| 中文字幕乱码中文乱码毛片| 国内不卡不区二区三区| 久久aaaa片一区二区| 国产果冻豆传媒麻婆精东 | 亚洲av午夜成人片| 成人午夜在线观看日韩| 久久精品国产亚洲av高清蜜臀| 午夜高清福利在线观看| 三级国产在线观看| 亚洲av色一区二区三区| 一区二区传媒有限公司| 天堂www在线资源天堂在线| 欧美性猛交xxxx免费看| 日韩精品亚洲 国产| 99国产精品一区二区蜜臀| 国产精品一区二区人人爽| 精品自在拍精选久久| 国产91精品一区二区蜜臀| 欧洲精品色在线观看| 亚洲人成精品久久久久| 国产a级三级三级三级|