Sustainable Energy

China Could Have a Meltdown-Proof Nuclear Reactor Next Year

Two high-temperature, gas-cooled reactors under construction in Shandong will make up the first commercial-scale plant of its type in the world.

In what would be a milestone for advanced nuclear power, China’s Nuclear Engineering Construction Corporation plans to start up a high-temperature, gas-cooled pebble-bed nuclear plant next year in Shandong province, south of Beijing. The twin 105-megawatt reactors—so-called Generation IV reactors that would be immune to meltdown—would be the first of their type built at commercial scale in the world.

Construction of the plant is nearly complete, and the next 18 months will be spent installing the reactor components, running tests, and loading the fuel before the reactors go critical in November 2017, said Zhang Zuoyi, director of the Institute of Nuclear and New Energy Technology, a division of Tsinghua University that has developed the technology over the last decade and a half, in an interview at the institute’s campus 30 miles south of Beijing. If it’s successful, Shandong plant would generate a total of 210 megawatts and will be followed by a 600-megawatt facility in Jiangxi province. Beyond that, China plans to sell these reactors internationally; in January, Chinese president Xi Jinping signed an agreement with King Salman bin Abdulaziz to construct a high-temperature gas-cooled reactor in Saudi Arabia.



During a recent visit to the Tsinghua facility, technologists were testing the huge helium blower that will circulate the gas coolant at the Shandong site once it starts up. Such high-temperature reactors are immune to meltdown because they don’t require elaborate external cooling systems of the sort that failed at Fukushima, Japan, in 2011. The graphite coating protects the fuel from breaking down, even at temperatures well beyond those found in the reactor core during operation, and once the interior temperature passes a certain threshold, the nuclear reactions slow, cooling the reactor and making it essentially self-regulating. And while pebble-bed reactors do not totally solve the problem of nuclear waste, the fuel’s form also gives rise to multiple options for waste disposal. China’s eventual goal is to eliminate or greatly reduce waste by recycling the spent fuel.


Several other advanced-reactor projects are under way in China, including work on a molten-salt reactor fueled by thorium rather than uranium (a collaboration with Oak Ridge National Laboratory, where the technology originated in the 1960s), a traveling-wave reactor (in collaboration with TerraPower, the startup funded by Bill Gates), and a sodium-cooled fast reactor being built by the Chinese Institute for Atomic Energy (see “China Details Next-Gen Nuclear Reactor Program” and “TerraPower Quietly Explores New Nuclear Reactor Strategy”). 

Indeed, China is rapidly becoming a test bed for innovative nuclear power technologies that have stalled in the United States and Europe. “What you are seeing is serious intent,” says Forsberg. “They may kick greenhouse gases out of their power sector before we do because of that serious intent.”