The natural geometry of close-packed spheres then provides the ducting the spaces between the spheres and spacing for the reactor core. A technical advantage is that some designs are throttled by temperature, not by control rods. If an item is under warranty you must return item before a replacement can be sent, this is for our protection against fraudulent claims. Rudolf Schulten in the s.
The graphite pebbles are more difficult to reprocess due to their construction,[ citation needed ] which is not true of the fuel from other types of reactors. These safety features were tested and filmed with the German AVR reactor. In that state, the reactor vessel radiates heat, but the vessel and fuel spheres remain intact and undamaged. However, all pebble-bed reactors are cooled by inert gases to prevent fire.
History[ edit ] The first suggestion for this type of reactor came in from Prof. There is a project in progress to develop pebbles and reactors that use MOX fuel , that mixes uranium with plutonium from either reprocessed fuel rods or decommissioned nuclear weapons. The reactor is cooled by an inert, fireproof gas, so it cannot have a steam explosion as a light-water reactor can.
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In most stationary pebble-bed reactor designs, fuel replacement is continuous. All reactors have reactivity feedback mechanisms, but the pebble-bed reactor is designed so that this effect is very strong.
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Posted by: Turan | on October 2, 2012
Safety features[ edit ] Pebble-bed reactors have an advantage over conventional light-water reactors in operating at higher temperatures. We will only ship to the address you provide through Paypal and Ebay.
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