In contrast, a pebble bed reactor is gas-cooled, sometimes at low pressures.
From the en.wikipedia.org
The goal was to gain operational experience with a high-temperature gas-cooled reactor.
From the en.wikipedia.org
The reactor is cooled by an inert, fireproof gas, so it cannot have a steam explosion as a light-water reactor can.
From the en.wikipedia.org
The CIA, however, believes Syria was building a gas-cooled, graphite-moderated reactor that was nearing operational capability by the end of the third quarter of 2007.
From the upi.com
An analysis by the UCS last year concluded that a gas-cooled reactor designed by San Diego-based General Atomics was particularly susceptible to fires in the graphite that holds the fuel.
From the time.com
So he cloned it, the result being a five-megawatt electric, gas-cooled, graphite-moderated nuclear reactor at Yongbyon, 90km north of the capital Pyongyang.
From the guardian.co.uk
In the PBR, thousands of pebbles are amassed to create a reactor core, and are cooled by an inert or semi-inert gas such as helium, nitrogen or carbon dioxide.
From the en.wikipedia.org
A closed loop liquid core nuclear reactor, where the fissile material is molten uranium cooled by a working gas pumped in through holes in the base of the containment vessel.