en.Wedoany.com Reported - On April 25, the inner dome of Unit 1 of the Huaneng Shidaowan Nuclear Power Plant Phase I Expansion was successfully hoisted, marking a full transition from the civil construction phase to the equipment installation stage. This is not only the first "Hualong One" project constructed in northern China but will also become the first operational "Hualong One" nuclear power unit in Shandong Province.
The dome hoisting is a key milestone in the construction of a nuclear power plant. The reactor steel liner is an important safeguard for nuclear safety, primarily ensuring the integrity and airtightness of the reactor building, playing a critical role in radioactive containment. The dome hoisted for Unit 1 is the top structure of the reactor building steel liner, featuring a hyperbolic shape composed of 70 panels, weighing up to 227.9 tons, with an area equivalent to four standard basketball courts.
Located in Rongcheng, Weihai City, the Huaneng Shidaowan Nuclear Power Base is China's first large-scale advanced nuclear power base to simultaneously apply independent third-generation and fourth-generation nuclear power technologies. The base is already home to the world's first operational fourth-generation nuclear power plant—the High-Temperature Gas-Cooled Reactor (HTGR) demonstration project. It also consists of two phases constructing four "Hualong One" large advanced pressurized water reactor units. Units of the first expansion phase commenced construction in July 2024 and May 2025, respectively, while preliminary work for the second expansion phase is being fully advanced and is about to be submitted for approval. Upon the full completion and commissioning of all four units, the base is expected to generate up to 35 billion kilowatt-hours annually, enough to meet the yearly electricity needs of 17 million three-person households, equivalent to reducing standard coal consumption by 11.5 million tons and cutting carbon dioxide emissions by 27.6 million tons per year.
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