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Recently, after more than an hour of effort, the 55-meter-tall and 5-meter-diameter wastewater stripping tower was moved approximately 50 meters along the planned path, and now stands firmly on the foundation of the sulfur recovery and environmental protection project at Guangzhou Petrochemical. This marks the successful installation of the wastewater stripping tower. The lifting company initially proposed to carry out the lifting work from outside the pipe gallery, across it, but there were nearly a hundred active pipelines on both sides of the crane and the sewage stripping tower, posing significant safety risks. According to the original construction plan, this stripping tower is lifted and welded in 4 sections; after welding is completed, 17 layers of platforms are welded, followed by anti-corrosion and insulation work. These tasks are all carried out at high altitudes, posing significant safety risks. After optimizing the construction plan, Guangzhou Petrochemical decided to carry out tasks such as assembly welding, platform welding, and anti-corrosion/insulation work on the ground before proceeding with the overall lifting, which reduced the risks associated with working at heights but increased the difficulty of the lifting process. The space available for lifting is limited; the south side of the tower’s location is only 1 meter away from the cabinet room under construction, while the east side is less than 2 meters away from the existing pipe rack. This lifting plan imposes extremely high technical requirements as well as stringent demands on construction organization. Guangzhou Petrochemical organized relevant units to spend nearly two months conducting repeated measurements and evaluations of the key points in the tower’s movement path as well as the foundation for the crane’s route, and carried out simulation drills before lifting the tower to verify the feasibility of the lifting plan. Thorough preparation paid off on site: during the lifting process, the actual movement path of the tower matched the planned path exactly. The success of the overall lifting also saved over 200,000 yuan in scaffolding costs and reduced the construction period by 10 days. Performing platform welding and anti-corrosion/insulation work on the ground ensures better quality; work efficiency has increased by nearly 3 times, saving almost 30 days of project duration. Time: 2019/4/2 15:08:42 Source: China Chemical Machinery Network