March 14, 2011 |
The fuel rods at a third nuclear reactor at the Fukushima No. 1 nuclear power plant have been fully exposed to air for short periods of time and at least partially exposed for more than three hours, allowing them to heat up and sharply raising the risk of a meltdown, according to officials of the Tokyo Electric Power Co., which owns the plant. The cooling problems at reactor No. 2 represent the most serious development in the ongoing problems at the nuclear power plant to date, according to nuclear specialist Edwin Lyman of the Union of Concerned Scientists.
March 12, 2011 |
Another nuclear reactor at the Fukushima No. 1 facility in Japan has lost its emergency cooling capacity, according to the Associated Press, bringing to three the number of reactors at that facility to fall prey to Friday's magnitude 8.9 earthquake and tsunami. Added to failure of three reactors at Fukushima No. 2, the count is now six overall. So far, the only reactor that seems to pose an immediate risk of widespread danger is one of the two shut-down reactors at Fukushima No. 1, also known as Fukushima Daiichi, which was disabled by an explosion overnight that destroyed the building housing the reactor and the backup cooling system.
March 15, 2011 |
Dangerous levels of radiation escaped a quake-stricken nuclear power plant after one reactor's steel containment structure was apparently breached by an explosion, and another reactor building in the same complex caught fire, Japan's leaders told a frightened population. Authorities warned that people within 20 miles of the crippled reactors should stay indoors to avoid being sickened by radiation. The fast-moving developments at the Fukushima No. 1 (Daiichi) plant, 150 miles north of Tokyo, catapulted the 4-day-old nuclear crisis to an entirely new level, threatening to overshadow even the massive damage and loss of life spawned by a devastating earthquake and tsunami.
March 17, 2011 |
Who are the "Fukushima 50" -- the workers trying to take regain control of Japan's stricken Fukushima Daiichi nuclear power plant? Twitter messages and blog posts by the workers' families offer an inkling of the "Fukushima 50," so nicknamed because the 180 employees at the site work in 50-person shifts. One of the workers is a veteran power plant worker, a 59-year-old who volunteered to take on the assignment, according to Jiji Press, a Japanese news wire service, quoting a woman who claimed to be his daughter on Twitter.
March 23, 2011 |
[Update 12:47 a.m.] Tokyo's utility company says black smoke has been seen emerging from Unit 3 of the crippled nuclear plant in northeastern Japan, prompting a new evacuation of the complex. Officials with Tokyo Electric Power Co. said Wednesday that workers from the entire Fukushima Dai-ichi plant have been temporarily evacuated. _________________ Control room lights were on and electronic thermometers were functioning Wednesday at several of Japan's stricken nuclear reactors, marking small but potentially critical steps toward controlling overheated fuel that has been spewing radiation for more than a week.
April 12, 2011 |
Japanese nuclear regulatory officials Tuesday raised the severity rating at the earthquake- and tsunami-damaged Fukushima Daiichi power plant to the highest level by international standards, equaling the 1986 Chernobyl meltdown in the former Soviet Union. The country's Nuclear and Industrial Safety Agency announced that because of the amount of radioactive material released from the plant after the magnitude 9 earthquake a month ago, the rating would be changed to level 7, a "major accident" on the International Atomic Energy Agency's scale, up from a level 5, an "accident with wider consequences.
March 27, 2011 |
For the better part of Sunday, media outlets in Japan and around the world carried scary-sounding news about radiation at the stricken Fukushima nuclear plant's No. 2 reactor. In a typical report, Japanese broadcaster NHK said: "Power company says it has detected radioactive materials 10 million times normal levels. " After nightfall came the mea culpa. There was a "mistake in the measurement of the assessment" of radiation in a building near the reactor, Tokyo Electric Power Co. said on its website.
March 25, 2011 |
As Japan marked two weeks since the giant earthquake and tsunami, the number of people dead or missing grew to more than 27,000, with at least 200,000 others in shelters and radioactivity from a stricken nuclear plant continuing to cast a pall over daily life. Two workers at the hobbled Fukushima Daiichi nuclear facility were hospitalized for radiation exposure Thursday after stepping into contaminated water during repair operations at reactor No. 3, officials at the nation's nuclear safety agency said.
April 1, 2011 |
Since the nuclear plant disaster in Fukushima in Japan, the stock of the company that designed the reactors, General Electric, has fluctuated less than $1 a share. Meanwhile, the operator of the facility, Tokyo Electric Power Co., has seen its share price plunge more than 70%. The explanation: Japanese law reportedly limits liability to the operator, not the designer, of a nuclear power plant. A year ago, we heard similar arguments about the limited exposure of BP in the wake of the oil spill in the Gulf of Mexico.
April 6, 2011 |
Engineers began injecting nitrogen into one of the reactors at the troubled Fukushima Daiichi nuclear power plant Wednesday evening as radiation levels in seawater near the plant dropped and a new report from the U.S. Nuclear Regulatory Commission suggested that the plant may face even more troubles in the future. Officials from the United Nations, meanwhile, said that even though the situation in Japan is more serious than the U.S. faced after the Three Mile Island accident in Pennsylvania in 1979, the group does not expect severe health consequences.