September 8, 2011 |
A nuclear power plant in central Virginia may have experienced twice as much shaking as it was designed to withstand during last month's rare East Coast earthquake, according to federal nuclear regulators, although no major damage has been found. Dominion Virginia Power, operator of the North Anna plant, confirmed that ground motion from the Aug. 23 quake exceeded the plant's design. But the company contended that the shaking was not as severe as federal regulators claimed. The data, as well as new details of the damage revealed at a Nuclear Regulatory Commission hearing Thursday, paint the clearest picture yet of how the magnitude 5.8 earthquake rocked a nuclear plant only a dozen miles from the epicenter in Mineral, Va. North Anna is the first nuclear power plant in the country to undergo ground motion that exceeded its design.
CALIFORNIA | LOCAL
August 22, 2012 |
Nearly seven months after the San Onofre nuclear power plant was closed because of a leak, officials are grappling with whether it makes financial sense to bring the plant fully back online, and if so, who should pay for the necessary repairs. Fixing San Onofre is shaping up to be an expensive proposition, with the price tag jumping into the hundreds of millions of dollars if the plant's massive steam generators require replacing. But keeping San Onofre shuttered is also proving costly to the two utilities that own the plant.
April 1, 2011 |
Radiation levels increased sharply inside and outside the Fukushima Daiichi nuclear power plant Thursday, slowing work on the devastated facility again and once more throwing into doubt the integrity of the containment vessels that hold the fuel rods. Tokyo Electric Power Co. officials said the level of radioactive iodine in water at the plant hit levels 10,000 times the permissible limit, preventing workers from getting near the water, which accumulated during early efforts to prevent a full-fledged meltdown by flooding the plant.
March 21, 2011 |
Tokyo Electric Power Co., which owns the earthquake- and tsunami-ravaged Fukushima Daiichi nuclear plant, is being criticized by people around the world, including the Japanese prime minister, for lacking candor ? and not for the first time. Critics have complained for years that Japanese nuclear plant operators ? particularly Tepco, as it is known ? have withheld information about safety violations and accidents. The critics have accused regulators of lax oversight in a giant industrial nation with no oil or gas resources, where atomic energy provides about one third of the power.
September 26, 2010 |
Iran said its Bushehr nuclear power plant is safe after confirming some of its industrial computers have been targeted by a computer worm and that it is working to counter the cyber-attack. "The main systems of the Bushehr nuclear power plant have not been damaged," Mahmoud Jahfari, the plants project manager, told the official Islamic Republic News Agency today. "Investigations show that some private software of the power plants employees have been contaminated. " The cyber assault has had no impact on the operations of the plant, Jahfari said.
July 12, 2011 |
Japanese scientists have some good news for farmers (and eaters) near the crippled Fukushima nuclear power plant: The soil can be made safe for planting. After the meltdown that followed the devastating magnitude 9.0 Tohoku earthquake and resulting tsunami on March 11, radioactive isotopes of cesium escaped from the plant. With a half-life of up to 30 years, those particles threatened to turn Japanese cropland into wasteland for several generations. But as Nature News reported Tuesday, researchers who have been monitoring the soil have found that the Fukushima radiation hasn’t penetrated very far. Most of the fallout is still within the top 2 inches of soil, according to Tomoko Nakanishi, a plant radiophysiologist at the University of Tokyo.