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  1. Nuclear Power : Robot probes show Japan reactor cleanup worse than expected

    This Feb. 16, 2017 photo released by Tokyo Electric Power Co. (TEPCO) shows a remote-controlled "scorpion" robot inside the Unit 2 reactor's containment vessel at Fukushima Dai-ichi nuclear power plant in Okuma town, Fukushima prefecture, northeastern Japan. Robot probes sent to one of Japan's wrecked Fukushima nuclear reactors have suggested worse-than-anticipated challenges for the plant's ongoing cleanup. (TEPCO via AP Photo) TOKYO (AP) — Robot probes sent to one of Japan's wrecked Fukushima nuclear reactors have suggested worse-than-anticipated challenges for the plant's ongoing cleanup. The plant's operator Tokyo Electric Power Co. said the remote-controlled "scorpion" robot was sent into the Unit 2 reactor's containment vessel Thursday to investigate the area around the core that had melted six years ago, but its crawling function failed while climbing over highly radioactive debris. The robot, carrying a dosimeter , thermometer and two small cameras, transmitted some data and visuals but could not locate melted fuel — key information to determine how to remove debris out of the reactor. The robot was abandoned inside the vessel at a location where it won't block a future probe. Preliminary examinations over the past few weeks have detected structural damage to planned robot routes and higher-than-expected radiation inside the Unit 2 containment chamber, suggesting the need to revise robot designs and probes. Similar probes are being planned for the two other melted reactors. A tiny waterproof robot that can go underwater will be sent to Unit 1 in coming weeks, but experts haven't figured out a way to access badly torn Unit 3. TEPCO needs to know the melted fuel's exact location and condition and other structural damage in each of the three wrecked reactors to figure out the best and safest ways to remove the fuel. Despite the incomplete probe missions, TEPCO stuck to its schedule to determine methods for the melted fuel removal this summer and start work in 2021, company spokesman Yuichi Okamura said. TEPCO is struggling with the plant's decommissioning, which is expected to last decades, following the 2011 earthquake and tsunami that led to the meltdown. Tens of thousands of residents had evacuated their homes, many of them still unable to return due to high radiation. Earlier this month, another robot, designed for cleaning debris for the main "scorpion" probe, had to return midway through because two of its cameras became inoperable after two hours when its total radiation exposure reached a maximum tolerance of 1,000 Sievert — a level that can kill a human within seconds. The original duration planned for the robot was 10 hours, or 100 Sievert per hour. Inadequate cleaning, high radiation and structural damage could limit subsequent probes, and may require more radiation-resistant cameras and other equipment, TEPCO officials said. TEPCO officials said that despite the dangerously high figures, radiation is not leaking outside of the reactor. Images captured from inside the chamber have showed damage and structures coated with molten material, possibly mixed with melted nuclear fuel, and part of a disc platform hanging below the melted core.

    Online Articles

    Online Articles

    Sat, 18 Feb 2017

  2. Nuclear Power : Exelon rivals sue to block billions of dollars in subsidies

    Competitors of Chicago-based Exelon Corp. filed a federal lawsuit Tuesday opposing legislation that provides billions of dollars in subsidies to the power giant.

    Online Articles

    Online Articles

    Thu, 16 Feb 2017

  3. Nuclear Power : Toshiba chairman resigns over huge nuclear business loss

    Toshiba Corp.'s chairman resigned Tuesday after the company logged such massive losses in its nuclear business that it must sell its lucrative computer-chip business to avoid going belly-up.

    Online Articles

    Online Articles

    Wed, 15 Feb 2017

  4. Nuclear Power : NRC holds public meeting to discuss Pilgrim nuclear safety

    Several members of the U.S. Nuclear Regulatory Commission's staff are scheduled to meet with citizens to answer questions about safety at the Pilgrim Nuclear Power Station in Plymouth.

    Online Articles

    Online Articles

    Tue, 31 Jan 2017

  1. Nuclear Power : Heysham reactor shuts for planned maintenance

    Online Articles

    Online Articles

    Wed, 8 Feb 2017

  2. Nuclear Power : Feds allow Pilgrim nuclear plant to remain open

    Federal regulators who found 10 safety issues at the Pilgrim Nuclear Power Station in Plymouth say the state's only nuclear plant will be allowed to stay open under intense scrutiny.

    Online Articles

    Online Articles

    Thu, 2 Feb 2017

  3. Nuclear Power : Blast in French nuclear plant's machine room; no radiation

    A fire led to a blast in a nuclear power plant's turbine hall Thursday on France's northwest coast but there was no radiation leak or casualties, operator EDF and local authorities said.

    Online Articles

    Online Articles

    Fri, 10 Feb 2017

  4. Nuclear Power : Cleaner robot pulled from Fukushima reactor due to radiation

    A remote-controlled cleaning robot sent into a damaged reactor at Japan's Fukushima nuclear plant had to be removed Thursday before it completed its work because of camera problems most likely caused by high radiation levels.

    Online Articles

    Online Articles

    Fri, 10 Feb 2017

  5. Nuclear Power : Federal agency inspects generator at nuke plant near Phoenix

    The Nuclear Regulatory Commission began a special inspection Monday at the Palo Verde Nuclear Generating Station west of Phoenix after an emergency diesel generator failed during testing two months ago.

    Online Articles

    Online Articles

    Wed, 8 Feb 2017

  6. Toshiba, Westinghouse Could Exit Nuclear Power Construction

    The news comes as Shigenori Shiga, the company’s chairman, may resign over massive cost overruns at a power plant construction business recently acquired by its Westinghouse Electric Co. unit.

    Online Articles

    Online Articles

    Mon, 30 Jan 2017

  7. Nulcear Power: NY bets big on aging nuke plants, balancing jobs, safety

    When the Nine Mile Point reactor first went online, Richard Nixon was president, the Beatles were still a band and Three Mile Island, Chernobyl and Fukushima weren't yet bywords for the hazards of nuclear power .

    Online Articles

    Online Articles

    Tue, 31 Jan 2017

  8. The world’s largest nuclear plants differ by age, number of reactors, and utilization

    There are currently 449 operating nuclear reactors in 31 countries, with a total installed generating capacity of more than 390,000 megawatts (MW). Nuclear power plants differ in various ways including reactor types, vessel containments, cooling methods, and dispatch purposes.

    Online Articles

    Online Articles

    Wed, 8 Feb 2017

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