pebble-bed reactor

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pebble-bed reactor

[′peb·əl ‚bed rē‚ak·tər]
(nucleonics)
A nuclear reactor in which the fuel consists of small spheres or pellets stacked in the core; the reaction rate is controlled by coolant flow and by loading and unloading pellets.
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Unlike Generation III reactors, which need to be shut down to remove spent fuel rods, a pebble bed reactor continuously cycles the pebbles through the core.
In addition to Egypt's decision to restart its nuclear power programme, there has been some discussion of Morocco building a nuclear power reactor, while South African power company Eskom still hopes to develop a string of pebble bed reactors, so could nuclear have a place in the African generation mix of the future?
In fact, says Gunter, the pebble bed reactor is not new; it's just "old wine in a new bottle.
The Xe-100 will benefit from decades of research and safe operation in pebble bed reactors internationally, and X-energy plans to bring the remarkable features and benefits of pebble fuel to the United States for the first time.
Pebble bed reactors, for instance, are now in the planning stages in China and South Africa, and supporters say a meltdown is nearly impossible with that design.