The heat treatment of all four spherical tanks at the Huizhou Tsuen Wan LPG project site has been completed

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The heat treatment of all four spherical tanks in the Huizhou Quanwan LPG project has been completed. Recently, as plumes of hot smoke emerged from the chimney on top of Tank B, the heat treatment of the last spherical tank (T43101B) as part of the new spherical tanks and related facilities for the Huizhou Port Quanwan port area, which was constructed by the company’s general contractor, was completed as scheduled. Thus, the overall heat treatment of all four spherical tanks has been finished, achieving the set objectives and laying a solid foundation for subsequent construction and management work. The purpose of overall heat treatment for spherical tanks is to eliminate the stresses resulting from their welding, stabilize their geometric dimensions, modify the microstructure of the welded area, enhance the toughness and stress resistance of the metal, and prevent crack formation. At the same time, due to the precipitation of dissolved hydrogen, it prevents the formation of delayed cracks, avoids delayed failure, and enhances fatigue strength and creep strength. This heat treatment process was carried out strictly in accordance with the plan; 60 temperature measurement points were set up in line with standard specifications, and a \"large-scale spherical tank overall heat treatment control system\" was used for control. The structure prior to heat treatment passed the joint inspection carried out by the special inspection agency, the project owner, the supervision unit, the construction unit, and others. During the heat treatment process, the process parameters were strictly followed, and the operating procedures as well as the personnel duty system were carefully implemented, ensuring the success of the heat treatment in just one attempt. Throughout the entire construction process of the spherical tank, given the numerous and challenging tasks involved on site, the project team led all its employees in overcoming these difficulties. They managed to address the adverse effects of typhoons, the rainy season, and high temperatures, working with great care and meticulous organization ； On the other hand, it is necessary to strengthen coordination with construction and supervision units to foster a spirit of rapid progress; to exert pressure on oneself to meet construction deadlines, to improve the coordination between different tanks and between various construction stages, to plan tasks in reverse order and to work diligently to accelerate the project’s development. To date, the hydrostatic testing of the spherical tank bodies has been completed for 2 units, while the installation of the steel structures and pipelines for the supporting facilities is in full swing. The project team coordinates all aspects of work, ensuring proper management of on-site materials, technical quality control, and construction coordination, so as to maintain quality and safety standards and to effectively manage safety protocols during this critical period. Next, the project team will make every effort to complete the critical tasks of conducting hydrostatic tests on the remaining two spherical tanks and to finish the construction of the steel structure for the pipe corridors, thereby creating the necessary conditions for pipeline installation. They will also accelerate the installation of the auxiliary steel structures for the spherical tanks, fire sprinkler systems, as well as various other components related to the project, striving to achieve the goal of completing the work by November 2025 and having the project ready for operation by December of that year.