en.Wedoany.com Reported - Recently, Zoomlion's 2000-ton crawler crane completed the integrated lifting of Module 4 of the steel containment liner at the construction site of Unit 3 of the Taipingling Nuclear Power Plant in Guangdong, China. This operation adopted a pre-assembly scheme integrating the steel liner module with internal air ducts, marking the first time in China's nuclear power construction that a steel containment liner was lifted as a whole with ducts, signifying new progress in modular construction for the nuclear power sector.
The core component of this lift was Module 4 of the steel containment liner, assembled by welding the fifth and sixth segments of the steel liner cylinder. To reduce the safety risks and schedule pressure associated with traditional high-altitude duct installation, the project team of CSCEC Power improved the construction process. They abandoned the conventional procedure of first lifting the shell and then installing ducts at height, opting instead to complete the overall installation and welding fixation of the air ducts at the ground assembly yard. This achieved integrated forming of the shell structure and ventilation ducts, and the combined component was positioned as a whole in a single lift, simplifying high-altitude construction steps.
The integrated combined component has a greater lifting weight and a larger wind area than a single module, imposing higher requirements on the stability, precision, and load capacity of the lifting equipment. During the operation, Zoomlion's 2000-ton crawler crane, leveraging its overall stability, micro-motion control capabilities, and heavy-load lifting performance, ensured stable positioning of the nearly 100-ton combined shell and duct assembly in the air, achieving zero deviation in the alignment process and safe and controllable construction.
Compared to traditional step-by-step construction, this pioneering duct-integrated lifting technology can directly reduce high-altitude work volume by approximately 90%, lowering safety risks such as falls and welding at height. According to the project construction plan, the Taipingling Nuclear Power Plant project will continue to apply a series of component-integrated lifting techniques: Module 5 will be lifted integrally with a maintenance steel platform, and Module 6 will be pre-assembled with 45 ring crane corbels for simultaneous integral lifting. From duct pre-assembly and integrated lifting of maintenance platforms, to lifting ring crane corbels with the module, and then to integrated prefabrication and lifting of ASG pool wall stainless steel modules and wall reinforcement cages, a diversified and standardized component-integrated lifting system has been fully implemented in the steel liner construction at Taipingling.
Currently, modularization, integration, and prefabrication have become mainstream trends in nuclear power plant construction nationwide, accelerating the transformation and upgrading of the industry's construction methods. Zoomlion stated that it will continue to focus on the R&D and manufacturing of high-end lifting equipment, iterating safer, smarter, and higher-performance large-scale lifting devices to provide equipment support for nuclear power plant construction.
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