Steel Dome of Unit 1 at China's Liaoning Xudabao Nuclear Power Plant Hoisted into Place
en.Wedoany.com Reported - On August 28, the steel dome of the nuclear island of Unit 1 at the Liaoning Xudabao Nuclear Power Plant, invested and controlled by China National Nuclear Corporation's subsidiary China National Nuclear Power (stock code: 601985), was hoisted into place, marking that the large-scale steel structure module construction of the unit has entered its final stage, laying a solid foundation for achieving the milestone of the nuclear island plant structure completion.
As the core load-bearing structure of the nuclear island, the steel dome is positioned atop the steel-plate concrete structure and bears all loads from the passive containment cooling water storage tank and the upper sections. It serves as a critical barrier safeguarding the structural integrity and sealing reliability of the reactor building. The dome is conical in shape, composed of radial main beams, ring beams, steel cladding panels, and a bottom steel platform, with a diameter of approximately 41 meters, a height of 11 meters, and a total hoisting weight of nearly 1,000 tons.
Liaoning Nuclear Power, in coordination with all participating construction units, fully leveraged mature construction experience from steel dome hoisting of similar units, completing the special construction plan review and full-process simulation rehearsal in advance. At the construction site, the work team strictly implemented refined safety and quality control requirements, coordinated cross-disciplinary overlapping operations, and comprehensively prevented various hoisting risks such as component deformation, equipment collision, and center-of-gravity deviation. With high-standard control ensuring the hoisting operation was "flawless and absolutely safe," the steel dome of the nuclear island was ultimately hoisted into place with precision in a single attempt.
