【Discussion on New LNG Processes in Longkou】How much do you know about fully submerged concrete LNG storage tanks with semi-underground foundations?

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The Longkou Nanshan LNG project is located in the Longkou Port Area of Yantai City, Shandong Province. The first phase of the project involves the construction of 6 LNG storage tanks with a capacity of 220,000 cubic meters each, 1 LNG loading/unloading berth with a capacity of 80,000 to 266,000 cubic meters (capable of handling ships carrying 10,000 to 180,000 cubic meters of LNG), as well as related facilities for loading/unloading, gasification, and transportation. The maximum annual LNG processing capacity of this phase is 5 million tons, with completion and operation scheduled for 2023. Nanshan Group Co., Ltd. is also involved in this project. In terms of project design, the use of a 220,000 cubic meter semi-underground concrete LNG storage tank is a first in China ； In terms of construction techniques, the large-scale application of the fully automatic longitudinal welding process for 9% nickel steel wall plates in storage tanks is the first of its kind in global LNG project construction. The localization rate of equipment for this project is expected to reach 90%, which is higher than that of existing LNG projects in China as well as similar newly built projects from the same period. This project will vigorously promote standardization, modularization, and informatization, striving to build a smart LNG receiving station featuring \"fully digital handover, fully intelligent operation, and full-life-cycle management\".