Pebble Bed Reactor
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From: Haywood JaBlowme on 3 Jul 2010 13:44 http://en.wikipedia.org/wiki/Pebble_bed_reactor "This type of reactor is claimed to be unique because its passive safety removes the need for redundant, active safety systems. Because the reactor is designed to handle high temperatures, it can cool by natural circulation and still survive in accident scenarios, which may raise the temperature of the reactor to 1600°C. Because of its design, its high temperatures allow higher thermal efficiencies than possible in traditional nuclear power plants (up to 50%) and has the additional feature that the gases do not dissolve contaminants or absorb neutrons as water does, so the core has less in the way of radioactive fluids. A number of prototypes have been built. Active development continued in South Africa until 2010 as the PBMR design, and in China whose HTR-10 is the only prototype currently operating." |