Study on Economical Channel Width for Large LNG Vessel

Abstract

The existing design code of natural gas wharf appears to be rough for LNG channel width in the quantitative, and lacks of testing and risk evaluation. The outstanding problem is studied by relying on the study on navigation safety of Shandong LNG project. Taking a 360 meters LNG vessel as a simulation object, according to the local navigation condition designed of a condition scheme, the NT-PRO4000 type of ship maneuvering simulator is used to make a ship handling simulation experiment about the large LNG vessel, and the statistics of the ship track frequency is analyzed. Large LNG vessel’s acceptable risk standard is designed by introducing the concept of social general acceptable risk standard, to calculate the channel width design proposal based on the acceptable risk standard of large LNG vessel. Finally, the risk probabilities are evaluated about the design proposal and the original plan by grounding model, the economic channel width value in the same risk rate is obtained, and providing a new idea for the study of safety and economic channel width for LNG channel.