A central uses a technology called boiling water reactor or BWR (Boiling Water Reactor). The core of the reactor fuel or heated in a pot of water and protected by a structure called containment. The fuel reaches up to 2,000 degrees and boils the water. The steam is piped to a turbine that generates electricity. For this reason, the fuel must be covered by water to avoid overheating.
What happened in Japan?
The earthquake damaged power supplies from abroad. The plant then activated the emergency system alone, but it broke flooding. Without electricity, the system failed core cooling and began to overheat. Was used to prevent sea water, but not enough causing the kernel heats up destabilizing the system
Since the core material is different: the fuel of uranium or plutonium and zirconium metal sheaths that protect the control rods made of boron iodide (a material that stops nuclear reactions), in addition, steel and cement, when the temperature rises, all these materials react uncontrollably.
steam at high temperature metals oxidize rapidly. The pods are deteriorating and volatile radioactive particles released fuel. In addition, the oxidation process releases hydrogen which is explosive.
The earthquake damaged power supplies from abroad. The plant then activated the emergency system alone, but it broke flooding. Without electricity, the system failed core cooling and began to overheat. Was used to prevent sea water, but not enough causing the kernel heats up destabilizing the system
Since the core material is different: the fuel of uranium or plutonium and zirconium metal sheaths that protect the control rods made of boron iodide (a material that stops nuclear reactions), in addition, steel and cement, when the temperature rises, all these materials react uncontrollably.
steam at high temperature metals oxidize rapidly. The pods are deteriorating and volatile radioactive particles released fuel. In addition, the oxidation process releases hydrogen which is explosive.
Can pass as in Chernobyl.
No, since it had no containment structure, the core spin blew releasing most of its content. Japan is expected to resist the containment vessel
In Japan, on the other hand has another problem: The spent fuel is stored in swimming pools that maintain a high temperature with high radioactivity at the moment have also been left without water cool them.
have so far been released into the atmosphere, the lighter particles. The noble gases krypton and radon and elements such as iodine, cesium, strontium, ruthenium and tritium.
http://www.mityc.es/ENERGIA/NUCLEAR/CENTRALES/Paginas/ListadoCentrales.aspx
http://www.inza.com/ainoa/Funcionamiento% 20of% 20the% 20central% 20nuclear.htm
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