• EIC’s line of submerged motor pumps and expanders are well suited to the growing business of floating installations. FSRU (Floating Storage and Regasification Unit), FPSO (Floating Production Storage and Offloading) and FLNG (Floating Liquefied Natural Gas) vessels benefit greatly from EIC’s technology. The compact design of a submerged pump or expander results in a machine approximately half the size and a third of the weight of an equivalent external motor pump or expander (with an external generator); an important advantage where space and weight are at a premium.
• All of EIC’s product lines are available for floating service. ECC model pumps are used in high-pressure send-out service on FSRUs and in several process services on FPSOs. Retractable ECR model pumps service the storage tanks on the vessels. Liquid Expanders (model LX) are found on the FLNG topside module. EIC’s experience of marine service such as shipboard Cargo and Gas Fuel pumps, is used to maintain high performance and reliability in floating service.
• Floating service pumps are subjected to additional loads due to ship hull motion. These loads are present during sea towing and during operation while moored at site. Vessel mounted pumps and expanders (ECC and LX) incorporate additional lateral supports to reduce the loads on the suction or discharge vessel mounting lugs. These supports are derived from shipboard Cargo pumps (model EC). Within the pump’s vessel, the pump is protected from lateral loads by the use of a lower support rod. In-tank retractable pumps use a deep-seat style suction valve or a rigid retraction system to eliminate the possibility of the pump unseating from the valve seal surface during hull motion. In the cases of extreme loads, it is also possible to fit the pump with a shaft locking device. This device prevents any movement of the shaft during shut-down while the ship is subjected to severe motions. It can be externally controlled and wired into the plant safe-guarding system with appropriate interlocks. All floating service pumps and expanders use the proven TEM® thrust balance system.
Ebara International Corporation will be supplying 10 units (9 pumps and 1 expander) for the new, groundbreaking Shell Prelude FLNG project. The planned location for Shell Prelude is in the Browse Basin of Australia and will be a global achievement in the world of Floating LNG. Expected production of the Shell facility is planned around 5.3 million tonnes per annum (mtpa) of liquids: 3.6 mtpa of LNG, 1.3 mtpa of condensate and 0.4 mtpa of LPG.