DEVICE AND METHOD OF DISCHARGING THE LNG AND A FLOATING MARINE-STRUCTURE FOR STORING THE LNG, CAPABLE OF PREVENTING THE EXCESSIVE PRESSURE RAISE OF AN LNG TANK AND THE RISK DUE TO THE PRESSURE RAISE

摘要

PURPOSE: A device and a method of discharging the LNG and a floating marine-structure for storing the LNG are provided to cope with the abnormal pressure raise of LNG tanks and the risk due to the pressure raise since a gas discharging device discharges the gas from an LNG tank to the air.;CONSTITUTION: A floating marine-structure for storing the LNG comprises a plurality of branch lines(110), safe valves(114), a convergent line(120) and shut-off valves. The branch lines are respectively connected to LNG tanks. The safe valves are respectively installed on the branch lines. The safe valves open the flow paths of the branch lines by the excessive pressure of the gas. The convergent line meets in common with the branch lines. The convergent line enables the gas to be discharged to any position of the air. The shut-off valves block the backflow of the gas through a corresponding flow path. Each of the shut-off valves is installed on the branch line between the corresponding safe valve and the LNG tank.;COPYRIGHT KIPO 2011