Shaking, Smoke Seen at Japanese Nuclear Plant Facing Possible Meltdown The walls of a building at nuclear power station crumbled Saturday as smoke poured out and Japanese officials said they feared the reactor could melt down following the failure of its cooling system in a powerful earthquake and tsunami. It was not clear if the damaged building housed the reactor. An official said the utility that runs the Fukushima Daiichi plant was reporting that several workers may have been injured. Fukushima Prefecture official Masato Abe said the cause of the rattling and smoke was unclear, declining to say whether an explosion had occurred. [ FOX NEWS ] Blast, smoke at Fukushima No. 1 plant Nuclear authorities had earlier warned that the Fukushima No 1 plant, located about 250km northeast of Tokyo, an urban area of 30 million people, might "be experiencing a nuclear meltdown". The plant's cooling system was damaged in the quake that hit on Friday, leaving the government scrambling to fix the problem and evacuate more than 45,000 residents within a 10km radius. Public broadcaster NHK reported that a blast had been heard at about 3.30pm local time and showed delayed footage of smoke billowing from the site, also reporting that the reactor building had been destroyed. TV channels warned nearby residents to stay indoors, turn off air-conditioners and not to drink tap water. People going outside were also told to aviod exposing their skin and to cover their faces with masks and wet towels. [ HERALD SUN ] The Japan earthquake was the fourth most powerful ever recorded with a magnitude of 9.1, twice more powerful than the initial estimate of 8.9, Gerard Fryer, geophysicist of the Pacific Tsunami Warning Center, said this morning. Three others that were more powerful since the late 1800s when seismometers started measuring ground motions were in 9.5 in Chile in 1960, 9.2 in Alaska in 1964 and 9.1 in Sumatra in 2004, according to Fryer. The new magnitude was adjusted based on the impact of the quake throughout the Pacific, he said. "It fits all measurements, including in Hawaii," Fryer said. The U.S. Geological Survey estimate of the quake's magnitude is still 8.9.It is not uncommon for scientists to estimate different magnitudes immediately after an earthquake. [ STAR ADVISER ] Latest Temblor An Interplate earthquakeThe major earthquake that struck northeastern Japan on Friday had the hallmarks of an interplate quake, which occurs at the boundary between two tectonic plates. At the area near the epicenter, the North American plate, on which part of the Japanese archipelago lies, slips under the Pacific plate. The temblor was likely triggered when the North American plate snapped upward, releasing the accumulated strain. The earthquake occurred near the site of another tremor that shook Miyagi Prefecture on Wednesday, so the earlier quake may have been a foreshock, according to the Japan Meteorological Agency. [ NIKKEI ] Radiation Levels Surge Outside Two Nuclear Plants in JapanJapan declared states of emergency for five nuclear reactors at two power plants after the units lost cooling ability in the aftermath of Friday's powerful earthquake. Thousands of residents were evacuated as workers struggled to get the reactors under control to prevent meltdowns. Operators at the Fukushima Daiichi plant's Unit 1 scrambled ferociously to tamp down heat and pressure inside the reactor after the 8.9 magnitude quake and the tsunami that followed cut off electricity to the site and disabled emergency generators, knocking out the main cooling system. An official with Japan's nuclear safety commission says that a meltdown at nuclear power plant affected by the country's massive earthquake is possible. [ FOXNEWS ] Japan says meltdown possible at nuclear plantAn official with Japan's nuclear safety commission says that a meltdown at nuclear power plant affected by the country's massive earthquake is possible. Ryohei Shiomi said Saturday that officials were checking whether a meltdown had taken place at the Fukushima Dai-ichi power plant, which had lost cooling ability in the aftermath of Friday's powerful earthquake. Shiomi said that even if there was a meltdown, it wouldn't affect humans within a six-mile (10-kilometer) radius. [ AJC.com ]
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