Meltdown

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Russia/Ukraine/ex-USSR - Chernobyl roof collapse worries activists. The area in pink indicates the location of the roof collapse.

Russia/Ukraine/ex-USSR - Chernobyl roof collapse worries activists

It is about 50 meters (165 feet) away from the "sarcophagus," a shelter built shortly after the 1986 disaster to contain radiation emanating from the exploded reactor.A 6,500 square foot section of roof on the turbine hall at Chernobyl collapsed last week due to heavy snow. Public relations officials for the reactor called the event “unpleasant” but claimed radiation levels remained the same. While claims of no radiation release seem to be verified by trustworthy sources, this is not the end of the concern for the site of one of the world’s worst nuclear accidents. In 1986, Chernobyl unit 4 failed catastrophically and released huge amounts of radiation to the surrounding environment. In an attempt to contain what radiation remained, boron and sand were dumped on the melted core and a sarcophagus was hastily constructed and installed.

Hydrogen Fix For Japanese Nuclear Reactors Eurasia Review. By World Nuclear News Areva is to fit all 23 Japanese pressurized water reactors with hydrogen recombiners that help to prevent the explosive gas building up in emergency situations. The French company announced a contract to provide a bulk order of its passive autocatalytic recombiners. The devices use catalytic oxidation to turn traces of hydrogen into steam, a process that works constantly and requires no power. They will be fitted in the reactor unit containment vessels to help prevent hydrogen explosions and “preserve the integrity of the reactor,” said Areva.

Japan Many nuclear operators installed systems to manage hydrogen after the partial core melt at Three Mile Island in 1979. Areva said it will install more than 100 of its devices at the Japanese pressurized water reactors, which make up 23 of the country’s 50-reactor fleet. World Nuclear News World Nuclear News is an online service dedicated to covering developments related to nuclear power. Albert Einstein Archives in Jerusalem. In his will Albert Einstein ordered that his secretary Helen Dukas (1896-1982) and Dr.

Albert Einstein Archives in Jerusalem

Otto Nathan (German-American economist, 1893-1987) should take care of his literary assets during their lifetime. Thereafter his literary assets should belong to the Hebrew University in Jerusalem. At the time of his death Einstein’s written heritage comprised about 14,000 documents. Through the great engagement and thanks to the untiring commitment of Helen Dukas and Dr. Otto Nathan many documents from Einstein were collected, sighted, sorted and evaluated. To make Einstein’s written heritage more accessible to researchers, Helen Dukas and the physicist Gerald Holton introduced a new classification system in the 1960ies.

In 1982 the administrators assigned the rights of Einstein’s heritage to the Hebrew University in Jerusalem. Today there are about 55,000 filed documents. 10,000 of these documents are from Einstein himself, partly in handwriting. Address: Nuclear Engineering International. Omaha Public Power District (OPPD) has announced an operating services agreement with Exelon Generation, LLC for the management of Fort Calhoun’s nuclear operations for up to the duration of its operating licence, which is due to expire in September 2033.

Nuclear Engineering International

Under the agreement, OPPD will remain the owner and licensed operator of the plant, while Exelon will provide the day-to-day operations management. The Exelon Nuclear Management Model will be used to improve and sustain performance at Fort Calhoun Station. The model is a systematic, formal, detailed guide to every aspect of safe nuclear plant operations. The plant staff will be a blended team of OPPD and Exelon employees. Gary Gates, president and chief executive officer of OPPD said: "By applying the Exelon Nuclear Management Model and the proven best practices from a world-class nuclear fleet like Exelon, we can ensure the sustainability and productivity of Fort Calhoun for the future.

" Fukushima Daiichi Nuclear Plant Weekly Review - Nuclear Power Industry News - Nuclear Power Industry News - Nuclear Street - Nuclear Power Portal. بین تھامس Бен Томас بن توماس בן טאמעס โทมัสเบน Key interests: Community Interests, including Comunity development.

Fukushima Daiichi Nuclear Plant Weekly Review - Nuclear Power Industry News - Nuclear Power Industry News - Nuclear Street - Nuclear Power Portal

I am also Interested in: Heritage, Culture, and History. Especially that in and around Cardiff UK. I find the Environment and Energy issues an interesting challenge !. I am also interested in the developing, "International Global Village". I am interested in "quality of life issues". The ability to "create wealth", and to maintain a "disposable income" !. The problems associated with a "change of scale". I would like to understand more about "leadership" ?. A developing interest of mine is "Energy and Power Generation", in Particular Electric Power !. Since 2011 I have been interested in understanding the Events at Fukushima Japan I am interested in understanding the developing Arab Spring, and the Events in Syria.

I regard Physical Conflict as being often a failure of Diplomacy !. Syria, and the Arab Spring My Political position I am not political, in the Party-Political sense !. I like. Fukushima Meltdown Hastens Decline of Nuclear Power. Nuclear accidents likely 'every ten to twenty years' Catastrophic nuclear accidents such as the core meltdowns at Chernobyl and Fukushima are 200 times more likely to happen than previously believed, say scientists.

Nuclear accidents likely 'every ten to twenty years'

Based on the operating hours of all civil nuclear reactors and the number of nuclear meltdowns that have occurred in the past, a team at the Max Planck Institute for Chemistry in Mainz has calculated that such accidents could occur once every 10 to 20 years. And, they say, when they do, half of the radioactive caesium-137 would spread more than 1,000 kilometers, and a quarter more than 2,000 kilometers. Western Europe would receive a dosage of more than 40 kilobecquerel of caesium-137 per square meter - the International Atomic Energy Agency official contamination level - about once every 50 years. In light of the results, the researchers are calling for an in-depth analysis and reassessment of the risks associated with nuclear power plants. Currently, there are 440 nuclear reactors in operation, and 60 more are planned.

Nuclear meltdowns 200x more likely than previously estimated. Catastrophic nuclear accidents such as the core meltdowns in Chernobyl and Fukushima are more likely to happen than previously assumed.

Nuclear meltdowns 200x more likely than previously estimated

Based on the operating hours of all civil nuclear reactors and the number of nuclear meltdowns that have occurred, scientists at the Max Planck Institute for Chemistry in Mainz have calculated that such events may occur once every 10 to 20 years (based on the current number of reactors) — some 200 times more often than estimated in the past. The researchers also determined that, in the event of such a major accident, half of the radioactive caesium-137 would be spread over an area of more than 1,000 kilometres away from the nuclear reactor. Their results show that Western Europe is likely to be contaminated about once in 50 years by more than 40 kilobecquerel of caesium-137 per square meter. According to the International Atomic Energy Agency, an area is defined as being contaminated with radiation from this amount onwards.

Newswire - Fukushima Meltdown Hastens Decline of Nuclear Power. Fukushima Meltdown Hastens Decline of Nuclear Power J.

Newswire - Fukushima Meltdown Hastens Decline of Nuclear Power

Matthew Roney, Earth Policy Category: Investment, Energy Ideas get bigger when you share them... News about Earth Policy May 22, 2012 (Investorideas.com Newswire) Earth Policy Reports: On May 5, 2012, Japan shut down its Tomari 3 nuclear reactor on the northern island of Hokkaido for inspection, marking the first time in over 40 years that the country had not a single nuclear power plant generating electricity. Prior to the Fukushima crisis, Japan had 54 reactors providing close to 30 percent of its electricity, with plans to increase this share to more than 50 percent by 2030. Next to Japan , the most dramatic shift in nuclear energy policy following Fukushima occurred in Germany . Across the Arab world, grain production is stagnating, yet grain demand is growing rapidly as population expands. Just before Germany 's phaseout decision, Switzerland abandoned plans for three new reactors that were going through the approval process.

Bob Burnett: Two Meltdowns: Fukushima and the US Economy. More than a year after a tsunami swamped the Fukushima-Daiichi nuclear power plants, the radiation peril continues -- reactor 4 is teetering on the edge of collapse, which would force the evacuation of one-third of Japan's population.

Bob Burnett: Two Meltdowns: Fukushima and the US Economy

The meltdown at Fukushima parallels the meltdown of the US economy. On March 11, 2011, Japan experienced a 9.0 earthquake. The six nuclear plants at Fukushima -- about 136 miles north of Tokyo -- survived the quake but were swamped by a 45-foot wave that overwhelmed the 19-foot seawalls. Fukushima units 5 and 6 were in cold shutdown for maintenance and Unit 4 had been deactivated. Units 1,2, and 3 lost power and were unable to cool down properly; they experienced full meltdown. As part of the maintenance process, the 1535 fuel rods in Fukushima reactor 4 had been removed and placed in a pool of water outside the containment system. The United States is not facing a nuclear crisis, but we are struggling with an economic crisis.

NRC MELTDOWN

Gregory Jaczko Resigns as Chairman of Nuclear Commission. U.S.

Gregory Jaczko Resigns as Chairman of Nuclear Commission

Nuclear Regulatory Commission Chairman Gregory Jaczko said he is resigning, as lawmakers, colleagues and an independent watchdog criticize what they said is a bullying style and mistreatment of female employees. “This is the appropriate time to continue my efforts to ensure public safety in a different forum,” Jaczko said today in a statement. “My responsibility and commitment to safety will continue to be my paramount priority after I leave the commission and until my successor is confirmed.” In an interview, he said disputes with NRC colleagues weren’t a reason for his decision. Jaczko, 41, whose term expires in June 2013, has been faulted for his management by other commissioners and in a report by the agency inspector general last year. Commissioners’ Disagreements The decision to resign more than a year before his term ends wasn’t influenced by recent disputes with other commissioners, who said in a letter they had “grave concerns” about his intimidation and bullying of staff.

IAEA Says Fukushima Daiichi Power Plant Suffered A Meltdown. Socratic WarningNewsroom MagazineMay ChallengeOr DemandCritical Thinking The intellectual roots of critical thinking date back to the Greek philosophers. Socrates discovered, by means of probing questions, that in the exchange of competing ideas, people sometimes make confident claims based on unreliable assumptions or failed logic. Such arguments, he discovered, were either erroneous in fact, absent sufficient foundation, or failing in logic. Instead, most arguments were based on confused meanings, inadequate evidence, or contradictory beliefs. Socrates' contributions to critical thinking were many -- for he established new ways to think about contentious issues in terms of the quality of assumptions, facts and logic. Thus Socrates demonstrated that persons may have passion, or power or high position but yet be deeply confused and irrational.

Good journalism, like compelling debate, is based on a clear understanding of facts and the logical construction of one's argument. Means Of Analysis. The human cost of the Fukushima meltdowns, one year later. Well, I guess this will all serve as a spur for Japan to invest even more money in alternatives like geothermal, wind and solar—which actually they've been heavily investing in for many decades now.

The human cost of the Fukushima meltdowns, one year later

I don't think Japan will ever be able to totally abandon nuclear energy despite the current outcrys in the country to do just that. Given the long history of earthquakes and vulcanism in Japan, there really aren't that many totally stable places to build new reactors. New reactors must be designed to expect some kind of earthquake related disaster to happen at some point. But really, the long term thing to learn here? All old nuclear power planets must be constantly rebuilt and refurbished with new technology to keep them safe when every new disaster teaches us something new. That's really expensive and given human shortsightedness, I doubt anything will be done about it. I shudder to think how us flighty, shallow Usans are going to just let this one slide.

Japanese Officials Knew of Imminent Meltdown Shortly After Tsunami. As Japan and the world prepare for tomorrow's one-year anniversary of the Fukushima disaster, government documents have been released revealing that top Japanese officials were directly warned of an imminent meltdown at the Nuclear plant but failed to take action and denied any such risks to the public. The report confirms suspicions of deceit in the government's handling of the disaster. International Atomic Energy Agency (IAEA) experts and TEPCO staff stand near Unit 3 , Fukushima Dai-ichi nuclear complex (AP / Tokyo Electric Power Co.)

Agence France-Presse reports: A summary of a government meeting held about four hours after a giant earthquake sent huge waves crashing into the atomic power station showed that one unidentified participant had cautioned of the risk of a meltdown. PBS Newshour: Cesium killed pine trees as far as you can see — Are there animals that can live here? No, no. Meltdown intel emerges ahead of Japan anniversary. By Huw Griffith TOKYO, March 10, 2012 (AFP) - Japan was Saturday preparing to mark the first anniversary of its tsunami, as government papers revealed ministers were warned of the possibility of meltdowns at Fukushima just after the waves struck. A summary of a government meeting held about four hours after a giant earthquake sent a wall of water crashing into the atomic power station showed that one unidentified participant had cautioned of the risk of a meltdown.

"If the temperature of the reactor cores rises after eight hours, there is a possibility that a meltdown will occur," the person said, according to the summary released on Friday. Fukushima Daiichi, 220 kilometres (140 miles) northeast of Tokyo, spewed radiation after its cooling systems were knocked out by the tsunami when it crushed coastal communities and left more than 19,000 people dead or missing. They finally admitted in May that three of six reactors had suffered meltdowns. "It was a year of fears and anxiety," she said. TEPCO sued over Fukushima meltdown - World. Updated Tue 6 Mar 2012, 10:04am AEDT A group of shareholders is suing former and current directors of the Tokyo Electric Power Company (TEPCO) for more than $60 billion over the Fukushima nuclear meltdowns.

The 42 TEPCO shareholders say the company knew from modelling estimates that a tsunami of more than 15 metres in height could strike the Fukushima nuclear plant. But they say the company ignored the estimates and did nothing to raise the breakwater protecting the plant. They are seeking to have 27 former and current TEPCO directors pay $62 billion in damages, in what could be the largest civil damages suit in Japanese history. The shareholders say if successful they will ask the company to use the money to help victims of the meltdowns. Topics: nuclear-accident, disasters-and-accidents, cyclones, japan. Inside Japan's Nuclear Meltdown, one year later: Frontline doc airs tonight on PBS. Tour inside meltdown zone of Fukushima Nuclear Plant.

Fukushima 'remains fragile' nearly a year after meltdown. Inside Japan's Nuclear Meltdown. Firms fear summer meltdown in nuclear-free Japan (via AFP) Full Story. What Happens During a Nuclear Meltdown?: Scientific American. Highly Radioactive Cars Being Sold Illegally in Japan. Japan’s last reactor to shut down, leaving country nuclear-free for first time since 1966. Dr Rima Recommends<br />Natural Solutions for a Weaponized World…

India can build nuclear reactors for $1700 per kilowatt. Lessons to learn about nuclear power, one year after Fukushima crisis. U.S. Nuclear Agency Suffers Leadership Meltdown.