No Illusions 23 – “Atomic” Rod Adams on Fukushima How Black Is the Japanese Nuclear Swan? A state of emergency has been declared for five reactors, with the worst affected reactors being the forty year old Boiling Water Reactors (BWRs) at Fukushima Dai-ichi, 240 km north of Tokyo.
These reactors shut down, as the control rods were automatically inserted to dampen the nuclear reaction (SCRAM). At least two reactors experienced a station blackout, which prevented the cooling system from functioning (a loss of coolant, or LOCA accident). Without the ability to cool the core, the risk is a meltdown, with the potential for explosions resulting from steam or hydrogen.
Even after the cessation of a nuclear chain reaction, heat from radioactive decay continues to be produced, and this heat needs to be dispersed in order to avoid a meltdown of the components of the core. Workers have been desperately trying to cool the reactor cores at units 1 and 3, but there has already been an explosion at Fukushima 1. Fukushima 1 before the tsunami Fukushima 1 after the tsunami.
Areva Commercial. AREVA TV Commercial: "Energy: One Powerful Story" Le scénario de la catastrophe de Fukushima. Un accident nucléaire d'une ampleur historique. Le Monde.fr | • Mis à jour le | Par Marion Solletty Six réacteurs nucléaires privés de système de refroidissement, deux cœurs probablement entrés en fusion : les défaillances graves survenues à la centrale nucléaire de Fukushima Dai-Ichi à la suite du séisme qui a touché le nord-est du Japon et du tsunami qui s'en est suivi, ont déjà placé l'accident à 4 sur l'échelle des événements nucléaires et radiologiques (INES) ; il pourrait atteindre à terme le niveau 5 ou 6.
Japan's Nuclear Half-Century. Exposed rods spark meltdown fear. 14 March 2011Last updated at 15:58 By Richard Black Environment correspondent, BBC News In Tokyo, Tepco officials formally apologised for the Fukushima incident The fuel rod exposure at Fukushima Daiichi number 2 reactor is potentially the most serious event so far at the plant.
News in French. News in German. News in Spanish. UK reaction. Sismos Internacional - 2011 - Página 2 - MeteoPT.com - Fórum de Meteorologia. Tsunami (Sendai) minuto30 El terremoto de 8,9 grados Richter que hoy ha sacudido el noreste de Japón ha causado un tsunami que ha alcanzado zonas de la ciudad de Sendai, donde las imágenes de la televisión local muestran como el agua ha arrastrado todo lo que se ponía por delante.
El epicentro se encuentra a 130 kilómetros mar adentro de Sendai, en la isla de Honshu. Se trata del terremoto más grave registrado en Japón en los últimos 20 años. IslandMonkeyable L'onda si abbatte su Sendai,onde alte 10 metri. Travel advice. Cotes d'ameriques Latines. » Japan earthquake unleashes tsunami. Comment se produit un seisme. Why Japan is prone to earthquaked. Cost of the Earthquake. Magnitude increased to 9.1. San Diego's First Home Wind Turbine. Hydrogen Combustion. Geography & Environment.
Help Eradicate Poverty In Africa. EPROM - Why Africa? Today’s mobile phones are designed to meet Western needs.
Subscribers in developing countries, however, now represent the majority of 2.4 billion mobile phone users worldwide. Africa, with Kenya at its forefront, is currently the fastest growing mobile phone market in the world. Over the past five years the continent's mobile phone use has increased at an annual rate of 65 percent - twice the global average. In June of 1999, Kenya had 15,000 mobile phone subscribers.
Overview - Syngenta Foundation For Sustainable Agriculture (SFSA) Agriculture Index Insurance: Kilimo Salama Can cell phones beat drought?
Dreams of Autarky. By Robin Hanson Sept 2001, First version Sept 1999 Genie nanotech, space colonies, Turing-test A.I., a local singularity, crypto credentials, and private law are all dreams of a future where some parts of the world economy and society have an unusually low level of dependence on the rest of the world.
But it is the worldwide division of labor that has made us humans rich, and I suspect we won't let it go for a long time to come. Introduction Many of us expect humanity to encounter enormous changes in the next century, changes that we would do well to consider seriously now. Meio Ambiente. Protection & Change. An Inconvenient Truth (2006. Environment - how to get involved. Green. Protection. TreeFeed. Open World Café - Dialogues on Sustainability, Leadership and Resilience. Solar Power Is Cheaper Than Nuclear for the First Time. Here’s bright spot in the news of the day: energy from new solar installations has, for the first time, become cheaper than energy from new nuclear plants, according to a new Duke University study.
Thanks to cost-saving technologies and economies of scale, price can no longer be an excuse to invest in nuclear power rather than solar. In North Carolina, nuclear energy costs 16 cents per kilowatt hour (the energy required to run 10 100-watt light bulbs for an hour), whereas solar is now going for 14 cents per kWh — a rate that continues to fall. In regions with more annual sunlight, the price gap is almost certainly even more pronounced. The data also analyzed only conventional photovoltaic power, not the concentrating technologies of troughs and reflectors, which also bring costs down.