At 08:57 on August 28, with the completion of the final pour of cylinder wall concrete, Unit 3's cooling tower was successfully topped out – achieving this major milestone one month ahead of schedule.This marks a significant milestone in the phased progress of the project's civil engineering construction.This has created critical operational conditions for the subsequent tower core structure project and the water distribution system project, laying a solid foundation for the next milestone.

This project involves the construction of two hyperbolic natural ventilation cooling towers, each with a water distribution area of 13,000 m² and a height of 175 m; these towers were cast in 127 successive sections. The base diameter of each tower is 148 m, and its throat diameter is 79 m – representing a massive structure with a highly complex design. The construction of the tower walls entails both significant technical challenges and high-altitude safety risks; the precise control of the hyperbolic profile, the assurance of the concrete's surface quality, and the implementation of construction safeguards under extreme high-temperature conditions – each of these aspects poses a rigorous test of the construction management capabilities.

In terms of safety management, rigorous specialized control measures were implemented for high-altitude work, lifting and hoisting operations, hydraulic bridge lifting, and formwork installation systems; the "Four Measures and Two Plans" were fully executed; the three-tier inspection system was strengthened; daily verification of high-risk operation conditions was conducted; the safety baseline was strictly maintained throughout the entire process; and a zero-accident safety record was achieved during the cylinder wall construction phase.

For quality control, emphasis is placed on monitoring template joint sealing, concrete slump, and casting and vibration techniques. Four methods are employed to ensure precise radius control for the cooling tower: measurement using a tensile gauge and ruler + GPS verification + laser distance meter verification + UAV aerial photography of the tower's center plus CAD verification – all designed to guarantee accurate radius measurements and smooth curve profiles. The "sample-guided construction" approach and process acceptance procedures are strictly implemented to ensure both the physical quality of the cooling tower's cylindrical wall and the desired visual finish.

In terms of schedule management, the project department optimized its construction organization by centrally coordinating the allocation of personnel, machinery, and materials, implemented an early morning acceptance mechanism, and avoided pouring the cylinder wall concrete during periods of high ambient temperature; all participating work teams worked in rotating shifts to tackle challenging tasks, while technical, quality inspection, and testing personnel were present on-site throughout the entire construction process, collaborating with the supervision team and the general contractor to conduct proper process acceptance inspections, thereby efficiently advancing the construction of each cylinder wall section and achieving the topping-out target ahead of schedule.

The successful topping-out of the Unit #3 cooling tower represents the culmination of the dedicated efforts and collaborative spirit demonstrated by all project management personnel and construction teams; it would not have been possible without the guidance of the company, as well as the strong support provided by the general contractor and the client.

Moving forward, the Project Department will use this as a new starting point to fully transition into the installation and construction phases involving the tower core structure, the hoisting of water distribution components, and the installation of the water distribution system; it will continue to rigorously enforce safety and quality control measures, strengthen risk prevention for concurrent operations, coordinate the advancement of all key milestones, and make every effort to ensure the successful achievement of the project's construction objectives.