A government panel proposed additional measures to lessen the radioactive water crisis at Japan's crippled nuclear power plant, saying Tuesday that current plans are not enough to prevent the risk of a disaster. Officials on the Industry Ministry's contaminated water panel also said that the Fukushima Dai-ichi plant could run out of storage space for contaminated water within two years if current plans are not fully workable.
Cooling systems generally rely on water pumped through pipes to remove unwanted heat. Now,...
Workers started removing radioactive fuel rods Monday from a reactor building at the crippled...
When Iran appeared close to a preliminary deal with world powers over its nuclear program, France stepped up to say: Not so fast — a surprise move that exposed divisions among the United States and other Western negotiators who had long been in lockstep on the issue.
Many efforts to smooth out the variability of renewable energy sources have focused on batteries, which could fill gaps lasting hours or days. But Massachusetts Institute of Technology’s Charles Forsberg has come up with a much more ambitious idea: He proposes marrying a nuclear power plant with another energy system, which he argues could add up to much more than the sum of its parts.
U.S. Energy Secretary Ernest Moniz said he expects deepening cooperation with Japan over the high-stakes cleaning up and decommissioning of the crippled Fukushima nuclear plant. The Fukushima plant has had a series of mishaps in recent months, including radioactive water leaks from storage tanks.
Japanese regulators gave final approval for removing fuel rods from an uncontained cooling pool at a damaged reactor building considered the highest risk at a crippled nuclear plant. Removal of fuel rods from the Unit 4 cooling pool is a first step in decommissioning the plant where three reactors melted down after the March 2011 earthquake and tsunami, a process expected to last decades.
The head of the U.N. nuclear agency urged Japan to work harder to address international concerns about leaks of contaminated water at its crippled Fukushima nuclear plant and said his agency will jointly monitor radiation levels in the nearby ocean. IAEA chief Yukiya Amano told Japan's top nuclear regulator that it is crucial that the country share data with the international community about the safety of Japanese waters and marine life.
Six workers at Japan's crippled nuclear power plant have been accidentally doused with highly radioactive water, the plant operator said today, adding to a growing list of mishaps that are shaking confidence in the utility's ability to handle the crisis. The workers removed the wrong pipe from equipment at the plant, sending toxic water spilling onto them and the entire floor of the facility.
Here’s the question faced by a team of Sandia National Laboratories researchers: How fast will iodine-129 released from spent nuclear fuel move through a deep, clay-based geological repository? Understanding that process is crucial as countries worldwide consider underground clay formations for nuclear waste disposal, because clay offers low permeability and high radionuclide retention.
At Los Alamos National Laboratory, a seven-year, $213 million upgrade to the security system that protects the laboratory's most sensitive nuclear bomb-making facilities doesn't work. Those same facilities, which sit atop a fault line, remain susceptible to collapse and dangerous radiation releases, despite millions more spent on improvement plans.
The science and engineering capabilities that underpin the nuclear weapons stockpile stewardship and nonproliferation missions at the nation’s three national security laboratories are “healthy and vibrant,” says a new report from the National Research Council. The committee that wrote the report found no problems with the quality of science and engineering that would prevent certification of the stockpile.
Japan's top nuclear regulator raised safety concerns about hastily built storage tanks and their foundations amid signs of more leaks of radiation-contaminated water. Nuclear Regulation Authority Chairman Shunichi Tanaka said that a small leak and signs of possible leaks have been spotted at several other Fukushima Dai-ichi storage tanks since a major leak in August that added to concerns about the plant's stability.
Numerous space probes have taken advantage of radioisotope thermoelectric generators (RTGs) powered by plutonium. However, the end of the Cold War has brought about a shortage of plutonium. In collaboration with NASA Glenn Research Center and National Security Technologies, Los Alamos National Laboratory has developed an alternative type of nuclear reactor, one that uses plentiful uranium as its fuel source.
The Mississippi Energy Institute is pushing for more exploration of storing and reprocessing used nuclear fuel in the state at the same time that one of the its congressmen is coming out against it. Leaders of the institute, which promotes energy development, pitched ideas to the state Senate Economic Development Committee.
The operator of Japan's crippled nuclear plant says deteriorated seams and a possible contortion of a tank might have caused a recent massive contaminated water leak. Tokyo Electric Power Co. said Saturday that the tank was reassembled after being relocated from a site where its foundation had partially collapsed. The tank's 300-ton leak was found Monday.
The Fukushima Daiichi nuclear disaster spread significant radioactive contamination over more than 3,500 square miles of the Japanese mainland in the spring of 2011. Now several recently published studies of Chernobyl are bringing a new focus on just how extensive the long-term effects on Japanese wildlife might be.
The operator of Japan's tsunami-crippled nuclear power plant says about 300 tons of highly radioactive water have leaked from a storage tank there. Tokyo Electric Power Co. said Tuesday that the contaminated water leaked from a steel storage tank at the wrecked Fukushima Dai-ichi plant. TEPCO hasn't figured out how or where the water leaked from the tank.
A new facility at Idaho National Laboratory is helping nuclear power plant operators like Duke Energy embark on an upgrade projects for their control rooms. The new Human System Simulation Laboratory (HSSL) is a full-scale virtual nuclear control room that can test the safety and reliability of proposed technology replacements before they are implemented in commercial nuclear control rooms.
Japan's government said it would step in and take "firm measures" to tackle contaminated water leaks at the country's crippled nuclear plant, including possibly funding a multibillion-dollar project to fix the problem. The announcement came a day after the operator of the wrecked Fukushima plant said some of the water was seeping over an underground barrier it created after injecting chemicals into the soil that solidified into a wall.
The operator of the wrecked Fukushima nuclear power plant said Tuesday it is struggling with its latest efforts to stop contaminated underground water leaks from running into the sea. Tokyo Electric Power Co. said that some of the water was seeping over or around a "liquid glass wall" it has created by injecting chemicals into the soil that solidify into a wall.
Japan marked the 68th anniversary Tuesday of the atomic bombing of Hiroshima with a somber ceremony to honor the dead and pledges to seek to eliminate nuclear weapons. Some 50,000 people stood for a minute of silence in Hiroshima's peace park near the epicenter of the early morning blast on Aug. 6, 1945, that killed up to 140,000 people.
In the aftermath of Japan’s earthquake and tsunami, the Fukushima Daiichi nuclear plant shutdown. The greatest damage and release of radiation, may have been caused by explosions of hydrogen gas that built up inside some of the reactors. That hydrogen buildup was the result of hot steam's contact with overheated nuclear fuel rods covered by a cladding of zirconium alloy. A team of researchers is developing an alternative cladding.
A Japanese utility has said its crippled Fukushima nuclear plant is likely to have leaked contaminated water into sea, acknowledging for the first time a problem long suspected by experts. Experts have suspected a continuous leak since the Fukushima Dai-ichi plant was ravaged by the March 2011 earthquake and tsunami.
The Japanese company that built corrosion-plagued steam tubes for California's San Onofre nuclear power plant says it will fight allegations of wrongdoing by the plant's operator. Mitsubishi Heavy Industries sent a reply Thursday to a letter from Southern California Edison that accused the company of "gross negligence." Edison argues that Mitsubishi is liable for costs that could run millions or even billions of dollars.
The Consortium for Advanced Simulation of Light Water Reactors (CASL) announced that its scientists have successfully completed the first full-scale simulation of an operating nuclear reactor. CASL is modeling nuclear reactors on supercomputers to help researchers better understand reactor performance, with the goal of ultimately increasing power output, extending reactor life and reducing waste.
Japan's nuclear watchdog says the crippled Fukushima plant is likely leaking contaminated water into sea, a problem long suspected by experts. Watchdog commissioners instructed operator Tokyo Electric Power Co. on Wednesday to find where the water may be leaking from. The plant was ravaged by the March 2011 earthquake and tsunami and has since struggled with leaks of water used to cool the reactors, hampering decommissioning efforts.
Japan is moving a step closer to restarting nuclear reactors as utilities are set to ask for safety inspections at their idled reactors, the clearest sign of Japan's return to nuclear energy nearly two and a half years after the Fukushima disaster. With all but two of its 50 reactors off line since the crisis, Japan has been without nuclear energy that once supplied about a third of its power.
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