The concrete pouring for the dome of Tank No. 2 in the Fujian LNG project has been successfully completed

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On January 17, the concrete pouring work for the 7th construction section of the dome of Tank No. 2 at the Fujian LNG receiving station project was completed. The pouring began at 12:28 on the same day and lasted for 10 hours and 30 minutes, during which 356 cubic meters of concrete were poured. Thus, the construction of the dome of Tank No. 2 was successfully completed, with a total duration of 57 days. The LNG storage tank dome is a large-span reinforced concrete shell structure that serves two primary functions: one is structural load-bearing, and the other is thermal insulation. The total amount of rebar used for the entire dome of Tank No. 2 exceeds 1,060 tons, while the total volume of concrete used is over 3,400 cubic meters. The entire dome is divided into 2 layers and 7 construction sections; the first layer consists of 3 construction sections, while the second layer has 4. Each construction section is further divided into several pouring sections. The construction technology requires high standards, precise shaping is essential, and the work is carried out at a height of over 50 meters, posing significant safety risks. During the construction preparation phase, the project team developed a construction plan based on the principles of \"precise construction, scientific management, and safety and efficiency.\" Skilled construction workers were selected to carry out the work on the dome of Tank No. 2, and multiple pump trucks as well as dozens of tank trucks were prepared in advance to ensure an adequate supply of concrete. During the construction process, strict quality and safety control measures are implemented; the \"three-inspection system\" and a multi-disciplinary joint approval process prior to pouring are strictly followed, with professional engineers providing ongoing supervision and inspection. Reinforcement installation shall be carried out in a uniform and symmetrical manner, from bottom to top ； Concrete pouring was carried out using a \"layer-by-layer, section-by-section, symmetric advancement\" approach; each construction section was poured evenly from bottom to top in a circumferential direction, with multiple vibrators used to ensure uniform vibration and thus achieve proper compactness of the concrete ； The surface finishing is carried out using a combination of mechanical and manual methods. After the finishing is complete, protective films and insulating blankets are applied promptly, along with moisture-retaining sprays, to ensure the strength and surface quality of the concrete.