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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.
A high-temperature gas-cooled reactor (HTGR) is a type of gas-cooled nuclear reactor which uses uranium fuel and graphite moderation to produce very high reactor core output temperatures. [1] All existing HTGR reactors use helium coolant. The reactor core can be either a "prismatic block" (reminiscent of a conventional reactor core) or a ...
It is a conventional helium-cooled, helium-turbine design. In 2021 the Chinese then built a 211 MW e gross unit HTR-PM, which incorporates two 250 MW t reactors. [21] As of 2021, four sites were being considered for a 6-reactor successor, the HTR-PM600. [21] The reactor entered service in December 2023. [22]
China was the first country to operate a demonstration generation-IV reactor, the HTR-PM in Shidaowan, Shandong, [7] [8] which is a pebble-bed type high-temperature gas-cooled reactor. It was connected to the grid in December 2023, making it the world's first Gen IV reactor to enter commercial operation.
A diagram of the NuScale Power Module reactor (50 MWe). The NuScale Power Module is the first SMR approved for commercial use in the United States. ... HTR-PM: 210 (2 ...
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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]
Reactor two achieved first criticality in November 2021. [14] Reactor one was connected to the state power grid and began producing power in December 2021 [15] The HTR-PM project demonstrated it had reached "initial full power" in December 2022. [16] The HTR-PM project finally entered commercial operation in December 2023. [17]