【Haichuan Modular Construction】Successful completion of the modular lifting of pipe trunks for the Tianjin Petrochemical Nangang Ethylene project
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On July 9, at the construction site of the Tianjin Nangang Ethylene Plant in the Tianjin Nangang Industrial Zone, Sinopec Fourth Construction Company used a 400-ton crawler crane to lift and place the first module in one go. A breakthrough has been achieved in adopting the \"prefabricated, modular\" construction approach.
The module lifted for the first time has an overall length of 18 meters, a width of 6 meters, and a height of 11 meters, with a total weight of 56.8 tons.
During the process, the steel structure is first assembled in sections; once these sections are erected, the crossbeams on both sides of the bottom layer as well as those on the top layer are connected. After that, the remaining bottom-layer crossbeams are installed. Next, the installation of the first layer of pipe supports and the laying of pipes are carried out; the same process is repeated for the second and third layers, followed by the installation of support arms, trough boxes, and safety equipment. Finally, the steel structure is capped. Before laying the pipes, a hydrostatic test is conducted on them; after installation, another hydrostatic test is carried out. Finally, tasks such as covering the welds, repainting, and insulating the modules are performed.
The Tianjin Nangang High-End New Materials Project Cluster includes 11 key projects such as the Tianjin Petrochemical Nangang 1.2 million tons per year ethylene plant and its associated high-end new materials industry cluster, the pilot production base of the Beijing Research Institute of Chemical Technology, and photovoltaic new energy projects. Led by the 1.2 million tons per year Nangang ethylene plant, this cluster aims to reach world-leading standards, fill gaps in China’s manufacturing sector, and replace imported products. It extends the industrial chain by constructing 12 sets of facilities for producing high-molecular-weight materials and other high-end new materials. This cluster boasts five notable advantages: high-quality product offerings, great market potential, complementary resource advantages, strong technological support, and leadership in green and low-carbon practices. Its goal is to establish a competitive edge based on high quality, differentiation, and low costs. It is understood that the Nangang ethylene plant is expected to be completed by 2023, with the entire project cluster set to be finished by 2025.
With digital construction these days, pipe supports can be prefabricated, and pipes can also be prefabricated
Its modularity is average, and the on-site construction efficiency is likely not much worse than that.