[Haichuan Overseas Engineering] The frame structure of the low-pressure elevated flare system for the Amira public works project in Saudi Arabia was completed 15 days ahead of schedule

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On November 25th, local time, with the final steel structural frame module accurately hoisted into place, the low-pressure elevated flare frame structure for the Amira public works project, which is under the construction responsibility of Huanqiu Jilin Chemical Construction in Saudi Arabia, was successfully completed 15 days ahead of schedule. This achievement laid a solid foundation for the smooth installation of the flare pipes that follow. It is reported that the low-pressure overhead flare for this project has a height of 175 meters and a total weight of around 650 tons. Modular installation methods are used in its construction, with the entire structure being divided into 7 sections for assembly and lifting. As the tallest iconic structure at the project site, this torch is also the second-tallest low-pressure elevated torch in Asia at present; its installation precision and construction complexity have attracted considerable attention from all parties. To ensure the smooth progress of the torch frame lifting and alignment work, project team members took charge of directing the operations, led the equipment management team, and worked together with the local Saudi company AL JABER Heavy Lifting to develop lifting plans and coordinated working methods. The team developed a detailed plan focusing on the lifting sequence, the movement routes of the machinery, and the construction process, ultimately creating a comprehensive control scheme for the entire workflow. During on-site construction, the workers strictly adhere to the QC quality inspection and acceptance standards, accurately carrying out adjustments to the verticality of the tracks as well as tightening the bolts at all connection points ； The scaffolding team follows up in parallel, promptly carrying out the erection and dismantling of scaffolding to ensure efficient and orderly progress of construction. At the same time, the project team carefully refined the construction plan; by optimizing the sequence of tasks, they reduced the duration that heavy cranes were needed on site, thereby effectively cutting down the costs associated with machinery rental. During the core hoisting and alignment phase of the torch framework, the construction team employed a dual-crane collaborative operation approach to carry out this task accurately: a 1250-ton Demag crane, equipped with a super-long boom of 198 meters, successfully lifted the 19.5-meter-high seventh section of the torch framework’s steel structure ； The 600-ton Terex crane used a specialized lifting frame to safely transport the senior rigger to the installation site at a height of 149.8 meters, where they were responsible for directing the lifting operations on site. Under the joint supervision of the project owner, PMT, ERT, the general contractor, and all other involved parties, and upon the lifting command given by the chief rigger, the two cranes worked in coordination to slowly lift the seventh section of the torch framework. After a series of coordinated movements such as lifting and rotating, it was finally placed in position with precision, completing its assembly. The installation of the torch frame was completed 15 days ahead of schedule, resulting in direct savings of around $80,000 in machinery rental costs and creating favorable conditions for the efficient progress of the project.