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Keyword: reactor

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  • Japan: Nuclear fuel at Fukushima No. 1 unit melted after full exposure

    05/12/2011 5:40:36 AM PDT · by TigerLikesRooster · 24 replies
    Nuclear fuel at Fukushima No. 1 unit melted after full exposure TOKYO (Kyodo) -- Water inside the troubled No. 1 reactor of the Fukushima Daiichi nuclear power plant was at an unexpectedly low level, not enough to cover the nuclear fuel, hinting that a large part of the fuel melted after being fully exposed, Tokyo Electric Power Co. said Thursday based on data obtained by adjusted gauges. But the plant operator said the water at the bottom of the reactor pressure vessel holding the fuel is keeping the melted fuel cool, assuring that the company is succeeding in preventing the...
  • Japan: TEPCO finds another leak of radioactive water into sea (from reactor #3)

    05/12/2011 5:35:52 AM PDT · by TigerLikesRooster · 3 replies
    Japan Today ^ | 05/12/11
    TEPCO finds another leak of radioactive water into sea Thursday 12th May, 03:31 AM JST TOKYO — Tokyo Electric Power Co said Wednesday it had detected another leak of highly contaminated radioactive water into the sea near the Fukushima Daiichi nuclear power plant but was able to stop the flow. Some radioactive substances also apparently passed through the ‘‘silt fence’’ curtain barriers installed in the sea near the crippled plant to prevent the spread of radioactive materials when leaks occur, raising concern that they may contaminate a wider area of the Pacific Ocean. The water leaked from a pit close...
  • Workers enter No. 1 reactor building for 1st time since accident

    05/04/2011 9:44:44 PM PDT · by TigerLikesRooster · 8 replies
    Workers enter No. 1 reactor building for 1st time since accident TOKYO (Kyodo) -- Workers entered the No. 1 nuclear reactor building at the Fukushima Daiichi power plant Thursday for the first time since the complex was damaged by the March 11 mega earthquake and subsequent tsunami, as part of efforts to install a cooling system at the No. 1 reactor, Tokyo Electric Power Co. officials said. Tokyo Electric, or TEPCO, seeks to remove air contaminated with radioactive substances from inside the reactor building by connecting it to a ventilating device installed at the adjacent turbine building
  • Japan: Map details radiation at N-plant site

    04/26/2011 5:55:27 AM PDT · by TigerLikesRooster · 14 replies
    Map details radiation at N-plant site Tokyo Electric Power Co. has released to the public for the first time a map of its Fukushima No. 1 nuclear power plant that shows results of a survey of radiation levels at the site. The map released Sunday shows high levels of radiation in different parts of the site, including 300 millisieverts per hour from debris near the No. 3 reactor, the outer building of which was damaged in a hydrogen explosion more than a month ago. The map, which shows radiation levels at about 230 locations within the nuclear plant complex, indicates...
  • Japan Agency Admits Fuel Melt at Fukushima N-Plant(reactor 1&3; technetium-99m)

    04/18/2011 4:24:18 PM PDT · by TigerLikesRooster · 12 replies · 1+ views
    Jiji Press ^ | 04/18/11
    Japan Agency Admits Fuel Melt at Fukushima N-Plant Tokyo, April 18 (Jiji Press)--The industry ministry's Nuclear and Industrial Safety Agency on Monday acknowledged that nuclear fuel rods have melted at the No. 1 to No. 3 reactors of the crippled nuclear power plant in Fukushima Prefecture, northeastern Japan. The agency reported the assessment to the day's meeting of the government's Nuclear Safety Commission. This was the agency's first official recognition of core melt accidents at Tokyo Electric Power Co.'s <9501> Fukushima No. 1 plant, which was knocked out by the March 11 massive earthquake and tsunami. On March 12, officials...
  • Japan: Q+A-How does Fukushima differ from Chernobyl?

    04/12/2011 5:46:49 AM PDT · by TigerLikesRooster · 4 replies
    Reuters ^ | 04/12/11
    Q+A-How does Fukushima differ from Chernobyl? 6:10am EDT By Mayumi Negishi TOKYO, April 12 (Reuters) - Japan on Tuesday raised the severity level of its nuclear crisis to put it on par with the 1986 Chernobyl accident, the world's worst nuclear power disaster. But for all their criticism of how Tokyo Electric Power Co and Japan's government are handling the crisis at the Fukushima Daiichi nuclear power plant, experts agree with them on one point: Fukushima is not another Chernobyl. "Fukushima has its own unique risks, but comparing it to Chernobyl is going too far. Fukushima is unlikely to have...
  • Higher MOX Fuel Concentration Weighed for U.S. Reactors

    04/12/2011 5:44:11 AM PDT · by TigerLikesRooster · 2 replies
    Higher MOX Fuel Concentration Weighed for U.S. Reactors Monday, April 11, 2011 The federal Tennessee Valley Authority and Energy Department have conducted talks on potentially substituting mixed-oxide fuel derived from nuclear-weapon material for one-third of the low-enriched uranium in several U.S. power reactors, a substantially higher proportion of MOX fuel than a crippled Japanese nuclear plant had used, the New York Times reported on Sunday (see GSN, April 5). Any TVA move on the proposal has been put off pending a review of the behavior of MOX fuel at Japan's Fukushima Daiichi nuclear power plant, which was severely damaged last...
  • Iran can “easily” steer Japan out of its nuclear crisis(Iran goes "Onion?")

    04/09/2011 8:48:23 AM PDT · by TigerLikesRooster · 6 replies
    Dawn ^ | 04/09/11
    Iran can “easily” steer Japan out of its nuclear crisis TEHRAN: Iran can “easily” help Japan in dealing with a crippled nuclear power plant which was damaged in the aftermath of a March 11 tsunami, a top Iranian atomic scientist was quoted as saying on Saturday. “Iran is one of the nations which under the current circumstances can help Japan with the damage in the Fukushima (Daiichi) nuclear plant,” Mahmoud Reza Aghamiri, Iran’s newly appointed representative to the Middle East’s SESAME nuclear project, was quoted as saying by the Fars news agency. “Iranian experts can easily tackle this this disaster...
  • Iran reloads fuel into Bushehr n-plant IANS India Private Limited

    04/08/2011 2:06:53 PM PDT · by matt04 · 3 replies
    Moscow, April 8 (IANS) Iran Friday began reloading nuclear fuel into the reactor of its Bushehr power plant, Xinhua reported. The refuelling is being carried out after a series of checks completed on the plant, said Russian state-run contractor Atomstroyexport, which is carrying out the task. 'On April 8, 2011, loading of fuel into the core began at Bushehr,' the company said in a statement, adding all operations are being carried out as per schedule agreed with Iran. ... The construction of the plant started in 1975 by German companies. However, the work was halted after the US imposed an...
  • From Safe Distance, U.S.-Japanese Team Draws Up Plan to Demolish Reactors

    04/08/2011 8:15:05 AM PDT · by TigerLikesRooster · 5 replies
    NYT ^ | 04/07/11 | KEN BELSON
    April 7, 2011 From Safe Distance, U.S.-Japanese Team Draws Up Plan to Demolish Reactors By KEN BELSON TOKYO — Hydrogen explosions. High levels of radiation. Thousands of gallons of contaminated water dumped into the sea. With the drumbeat of bad news, including another powerful aftershock on Thursday, it will take months, if not years, to stabilize the reactors and spent fuel pools that were damaged in last month’s earthquake and tsunami at the Fukushima Daiichi plant. Yet it is not too soon for a team of engineers from Japan and the United States to begin working on the thorny task...
  • Japan: New cooling options being explored

    04/08/2011 5:47:42 AM PDT · by TigerLikesRooster · 3 replies
    New cooling options being explored The Yomiuri Shimbun Tokyo Electric Power Co. is considering alternative methods, including the construction of improvised systems, to cool reactors at the crippled Fukushima No. 1 nuclear power plant. Ongoing operations--which involve pouring water directly into the reactor cores to lower temperatures inside the pressure vessels of the Nos. 1 to 3 reactors to below 100 C--have not worked as expected, and restoration of the reactors' existing cooling systems is not likely to happen soon. /snip One proposal is to build makeshift cooling systems. TEPCO would have to access pipes connected to the pressure vessels...
  • Japan May Enlarge Evacuation Zone

    04/07/2011 4:45:18 AM PDT · by TigerLikesRooster · 8 replies
    WSJ ^ | 04/07/11 | TOKO SEKIGUCHI And MITSURU OBE
    APRIL 7, 2011, 7:01 A.M. ET. Japan May Enlarge Evacuation Zone By TOKO SEKIGUCHI And MITSURU OBE TOKYO—Japan may look to extend the evacuation zone around the crippled Fukushima Daiichi nuclear power plant as the crisis there drags on, the government's top spokesman said Thursday. Chief Cabinet Secretary Yukio Edano said the current 20-kilometer (12.4-mile) zone, which was based on the assumption of short-term exposure, may need to be enlarged. The plant emergency caused by an earthquake and tsunami on March 11 is now nearing the end of its fourth week. "Current evacuation orders apply to areas where people are...
  • IAEA: Fukushima Nuclear Accident Update Log [06-April-2011

    04/06/2011 1:10:19 PM PDT · by topher · 56 replies
    IAEA ^ | 06-April-2011 | Staff Report
    Fukushima Nuclear Accident Update (6 April 2011, 15:15 UTC) Japanese authorities have informed the IAEA that TEPCO has been authorized to begin injection of nitrogen into the primary containment vessel (PCV) of Unit 1 at the Fukushima Daiichi nuclear power plant. Injection of nitrogen is intended to displace oxygen inside the containment vessel, thereby reducing a risk of explosion due to the combustible combination of hydrogen and oxygen. IAEA Briefing on Fukushima Nuclear Accident (6 April 2011, 14:00 UTC) Presentation: Summary of Reactor Status On Wednesday, 6 April 2011, the IAEA provided the following information on the current status of...
  • Japan seeks Russian help to end nuclear crisis(ship for decommissioning nuke sub)

    04/04/2011 9:31:19 PM PDT · by TigerLikesRooster · 32 replies
    Reuters ^ | 04/04/11 | Chizu Nomiyama and Shinichi Saoshiro
    Japan seeks Russian help to end nuclear crisis By Chizu Nomiyama and Shinichi Saoshiro TOKYO | Mon Apr 4, 2011 6:32pm EDT TOKYO (Reuters) - Japan has asked nuclear superpower Russia to send a special radiation treatment ship used to decommission nuclear submarines as it fights to contain the world's worst atomic crisis since Chernobyl, Japanese media said late on Monday. Japanese engineers at the Fukushima Daiichi nuclear plant have been forced to release radioactive waste water into the sea. At the same time they are resorting to desperate measures to contain the damage, such as using bath salts to...
  • Japan to Cover Reactor 1-4 With Special Cloth (keep radioactive particles in?)

    04/04/2011 7:30:43 AM PDT · by TigerLikesRooster · 19 replies · 1+ views
    Arirang News ^ | 04/04/11 | Song Ji-Sun
    Japan to Cover Reactor 1-4 With Special Cloth The Japanese government announced Sunday that reactors 1 through 4 at the Fukushima Daiichi Nuclear Plant will be covered with a special cloth to reduce the amount of radioactive particles being released into the atmosphere. A forty-five meter high frame will be constructed within a month or two to support the cloth covering the reactors. In waters around the plant, radioactive material has been detected in the Pacific Ocean some 40-kilometers away from the nuclear plant while contaminated seawater containing more than 3-thousand times the legal limit of iodine has been recorded....
  • (Update) Tokyo Electric Starts Dumping Low-Level Radioactive Water into Sea

    04/04/2011 7:26:33 AM PDT · by TigerLikesRooster · 8 replies
    Jiji Press ^ | 04/04/11
    (Update) Tokyo Electric Starts Dumping Low-Level Radioactive Water into Sea Fukushima, April 4 (Jiji Press)--Tokyo Electric Power Co. <9501> on Monday evening started dumping water tainted with low-level radiation at its stricken Fukushima No. 1 nuclear power plant in northeastern Japan into the sea to secure space to store highly radioactive water. The amount of water to be released into the Pacific Ocean will total some 11,500 tons--10,000 tons currently stored at a nuclear waste processing facility and 1,500 tons in drainage pits at the plant's No. 5 and No. 6 rectors, the company said. It will take some five...
  • Westinghouse surrendered next-generation nuclear plant specs

    04/04/2011 5:31:57 AM PDT · by RS_Rider · 31 replies
    PITTSBURGH TRIBUNE-REVIEW ^ | Monday, April 4, 2011 | Lou Kilzer
    Editor's note: This is the second of two parts: Yesterday's segment shared Motorola's and Apple's experiences doing business with China. Click here to read it. Westinghouse Electric Co. is sharing important technical information about its next-generation nuclear reactors with China with the hope that it will create business -- and not a competitive monster. China has 13 nuclear reactors, 25 under construction, and many more planned, said Westinghouse spokesman Vaughn Gilbert. China will spend an estimated $120 billion during the next nine years, a sum expected to more than double by 2030. The Cranberry-based company says it's confident that in...
  • Japan: Chemical, sawdust, newspaper mix used to plug leak at nuclear plant

    04/03/2011 6:52:12 AM PDT · by TigerLikesRooster · 34 replies
    CNN ^ | 04/03/11
    Chemical, sawdust, newspaper mix used to plug leak at nuclear plant By the CNN Wire Staff April 3, 2011 -- Updated 1015 GMT (1815 HKT) Tokyo (CNN) -- Workers on Sunday poured a chemical compound mixed with sawdust and newspaper into a crack at Japan's Fukushima Daiichi nuclear power facility that's been a conduit for highly radioactive water leaking into the Pacific Ocean, a utility company official said. This follows an unsuccessful attempt a day earlier to use concrete to plug the 2-meter-deep (6.5-foot-deep), concrete-lined basin, where authorities had found water gushing directly into the sea via a roughly 20-centimeter...
  • Japan: Govt Says Several Months May Be Required Before Radiation Leaks Stop

    04/03/2011 4:45:17 AM PDT · by TigerLikesRooster · 26 replies
    Nikkei ^ | 04/03/11
    Sunday, April 3, 2011 Govt Says Several Months May Be Required Before Radiation Leaks Stop TOKYO (Kyodo)--The government expects that several months may be required before radioactive particles stop being released from the Fukushima Daiichi nuclear plant, its top spokesman said Sunday. ''If we apply methods considered to be normal, I believe that it will be something like that,'' Chief Cabinet Secretary Yukio Edano told a news conference, when asked whether at least several months would be required before the plant crippled by the devastating March 11 earthquake and ensuing tsunami is brought under control. ''While it may not be...
  • IAEA: Fukushima Nuclear Accident Update Log [02-April-2011]

    04/02/2011 6:06:17 PM PDT · by topher · 14 replies
    IAEA ^ | 02-April-2011 12:00 UTC | Staff Report
    IAEA Briefing on Fukushima Nuclear Accident (2 April 2011, 12:00 UTC) Presentations: Summary of Reactor Status, 2 April 2011, 12.00 UTC On Saturday, 2 April 2011, the IAEA provided the following information on the current status of nuclear safety in Japan: 1.Current Situation Overall at the Fukushima Daiichi plant, the situation remains very serious. In preparation for transferring water in the basement of the Unit 1 turbine building to the condenser, water in the condenser storage tank is being transferred to surge tank of the suppression pool since 31 March 03:00 UTC. Water in the trench was transferred to a...