THE IMPORTANCE OF SLOSHING IN LNG CARRIERS FROM AN OPERATIONAL POINT OF VIEW
The nature of the loads generated by cargo sloshing in LNG carriers is largely governed by the design of the cargo containment system, but their magnitude depends very much on the level of the liquid in the tanks. It may sometimes be necessary or desirable for the ship to operate with a liquid-level outside the accepted design range, and the Author (of Shell International Marine) discusses some examples of circumstances in which this can occur based on experience with seven 75,000-cu m Shell vessels carrying LNG from Brunei to Japan, a distance of about 2,500 n. miles. The article mentions that consideration must also be given to the sloshing effects on the cargo pumps, instrumentation, and pipe supports inside the tanks, and that, in addition to sloshing, another hazard is the negative pressures that can occur, under certain conditions, at the liquid.vapour interface and may be detrimental to the strength and fatigue life of the membrance attachment system.
- Seminar on Liquid Sloshing, Oslo, Norway.
Norske VeritasGrenseveien 92, Etterstad
Oslo 6, Norway
- Prew, L R
- Publication Date: 1976-5
- Pagination: 7 p.
- TRT Terms: Equipment tests; Free surface; Liquefied gases; Liquefied natural gas; Sloshing; Stresses; Tankers; Tanks (Containers)
- Old TRIS Terms: Free surface effects; Tank stresses; Tank testing
- Subject Areas: Energy; Marine Transportation;
- Accession Number: 00152503
- Record Type: Publication
- Source Agency: British Ship Research Association
- Report/Paper Numbers: Paper No. 3
- Files: TRIS
- Created Date: May 31 1977 12:00AM