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The Submerged Floating Tunnel (SFT) uses buoyancy as its load-bearing mechanism. The SFT is a kind of bridge that will span longer and deeper waterbody; it can connect the future floating city and floating island to the mainland; it can be a critical technic to provide sustainable engineering solution for the planet. However, it is yet to build one. With global warming, the accelerated sea rising and the everlasting population growth, the significance of creating an experimental engineering project is becoming more and more important. In this paper, for the first time, a systematical and comprehensive construction method of the experimental project of SFT was proposed, taking the subject of a single lane, approximately. 1.8 km long anchor-type SFT in an imagined inland lake of weak hydrodynamic environment. The construction methodology aims at green, simple and reliable construction and structure, innovation construction methods are as follows: 1) the arrangement of double dock gate can realize the prefabrication of tube in dry environment and the overall floating storage; 2) using open caisson in the soft layer as shore connection to ensure that the tube firmly "takes root" on the shore; 3) reliable connection methodology of the tube and the shore on both ends; 4) large-facility-free, recycle-able, and environmental-friendly, temporary work floating facilities; 5) concrete blocks and ballast water are combined to adapt to the weight system transform during installations. In addition, the concept design takes account of the high tolerance of underwater construction inaccuracy and the high redundancy of the structural system in operation period, which are support by the results of the trial calculations. [ABSTRACT FROM AUTHOR]

Pipeline pigging converter, as a new type of pipeline connection equipment, has been used in petrochemical terminal project in recent years. It can exchange and connect four pipelines and meet the smooth passage of pipeline pig. It can avoid potential safety hazards and environmental protection problems caused by droplet splashing during pipeline conversion, and it is convenient and safe to connect. This paper introduces the common pipeline pigging modes and their limitations of process pipelines in petrochemical terminal, gives the working principle and design method of pipeline pigging converter, and illustrates that it can improve the flexibility of process system and reduce project investment by combining with specific engineering examples. It can be carried out with common pigging distribution valves in product design, land occupation, operation, daily maintenance, price and so on. The comparison proves that the design of pipeline pigging converter is scientific and reasonable, which can be used as a reference for similar projects. [ABSTRACT FROM AUTHOR]

As a new type of loading and unloading auxiliary facility, loading hose tower is specially designed to serve the loading and unloading of hoses. It has been used in petrochemical terminal project in recent years. It realizes mechanical hoisting of hoses to ensure that hoses work under normal working condition, and avoid accidents such as cargo leakage caused by damaged hoses. In this paper, we introduced the advantages and disadvantages of hose loading and unloading operation in petrochemical terminal, gave the working principle and design method of loading hose tower. Combining with specific engineering examples, it compared with convectional schemes in engineering investment, loading and unloading efficiency, operator allocation, safety and economic benefits, which proves that the design of loading hose tower is scientific and reasonable. [ABSTRACT FROM AUTHOR]