A Fixed Single-Point Mooring Innovation Solution for Offshore LNG-FSRU Import Terminal

Abstract Natural gas plays a critical role in sustainable development and energy transition because it's safe, high-heat and clean energy. LNG-FSRU is an offshore floating storage and regasification unit. Its main function is to receive, store and re-gasify LNG, plus transport the gasified natural gas. It gets transported ashore through subsea pipelines to supply gas to power plants and residential users. However, the mooring system is a key link in the engineering and production of LNG-FSRU. Similar to FPSO, LNG-FSRU has a variety of mooring types, including single-point mooring, multi-point mooring, dynamic positioning and dock moorings. Through comparative study, the Tower Yoke Mooring (TYM) system is widely used in shallow water FPSO, because of its good economic benefits, disconnectability and reliability. Therefore, we innovatively adopted a different berthing mode from the traditional terminal and developed a solution based on FSRU moored by TYM. Compared with the traditional fixed tower mooring system, the Tower Yoke Mooring (TYM) can reduce the overturning moment by reducing the height of the connection point, so as to facilitate the design of the mooring tower and its foundation, and the distance between the mooring point and the FSRU is shortened. Therefore, FSRU can adopt the Tower Yoke Mooring (TYM) solution to carry out overall scheme design research for LNG receiving terminal project. Meanwhile, compared with traditional onshore LNG receiving terminals, this innovative FSRU moored by TYM has the characteristics of a short construction period, rapid market development, smaller land area occupation and high device flexibility. It can be used in economically developed, environmentally sensitive and densely populated coastal areas. It is novel being energy transit, ensuring energy supply security and improving people's living standards in these areas. Thus, it meets the needs of local economic and social development.