BALASTING SYSTEM AND FLOATING MARINE STRUCTURE HAVING THE SYSTEM

摘要

PURPOSE: A ballasting system and a floating marine structure having the system are provided to isolate a ballast tank and a ballast pump room around an oil tank from a ballast tank around a liquefied gas tank. CONSTITUTION: A ballasting system comprises ballast pumps(3a,3b) for a safety zone, a ballast pipe(5a) for a safety zone, a ballast pump(3c) for a dangerous zone, and a ballast pipe for a dangerous zone. The ballast pumps for a safety zone supply and discharge ballast water to a ballast tank for a safety zone. The ballast pipe for a safety zone connects the ballast pumps for a safety zone to the ballast tank for a safety zone. The ballast pump for a dangerous zone supply and discharge ballast water to a ballast tank for a dangerous zone. The ballast pipe for a dangerous zone connects the ballast pump for a safety dangerous to the ballast tank for a dangerous. The ballast pipe for a dangerous zone is independent of the ballast pipe for a safety zone in order to prevent the ballast water contained in the ballast tank for a dangerous zone from flowing into the ballast pump for a safety zone.