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The use of a high-temperature, gas-cooled reactor for power production was proposed by in 1944 by Farrington Daniels, then associate director of the chemistry division at the University of Chicago's Metallurgical Laboratory. Initially, Daniels envisaged a reactor using beryllium moderator.
The HTR-PM is a high-temperature gas-cooled (HTGR) pebble-bed reactor. While the German AVR and THTR-300, operating from 1969 to 1988, were the first pebble-bed reactors and operated at similar temperatures, the HTR-PM is the first such design using modular construction and the second small modular reactor, following Russia's Akademik Lomonosov floating plant in 2019.
Advanced Gas-cooled Reactor (Magnox successor, 15 built, 1962-today) Heavy water gas cooled reactor (heavy water moderated, CO 2 cooled) Brennilis Nuclear Power Plant (1967-1985) KS 150 (1972-1979) Niederaichbach Nuclear Power Plant (1973-1974) High & Very-high temperature reactor (graphite moderated, Helium cooled) Prismatic block reactor ...
The reactor in Shidao Bay, China is the world’s first gas-cooled nuclear power plant built for commercial demonstration. It is cooled by helium and can reach high temperatures of up to 750 ...
The pebble-bed reactor (PBR) is a design for a graphite-moderated, gas-cooled nuclear reactor. It is a type of very-high-temperature reactor (VHTR), one of the six classes of nuclear reactors in the Generation IV initiative. Graphite pebble for reactor. The basic design features spherical fuel elements called pebbles.
It was one of two high temperature gas cooled power reactors in the United States. The primary coolant helium transferred heat to a water secondary coolant system to drive steam generators . The reactor fuel was a combination of fissile uranium and fertile thorium microspheres dispersed within a prismatic graphite matrix.
The HTR-PM is a high-temperature gas-cooled (HTGR) pebble-bed generation IV reactor partly based on the earlier HTR-10 prototype reactor. [70] The reactor unit has a thermal capacity of 250 MW, and two reactors are connected to a single steam turbine to generate 210 MW of electricity. [70]
The plant has the first fourth-generation nuclear reactors in the world: [3] the HTR-PM, a high-temperature gas-cooled reactor (HTGR) concept (). The plant will ultimately have ten 210 MW e (megawatts electrical) units of this type.
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