A calculation method for the operation reliability of LNG whole transportation system

Reliability analysis is an effective technical means to reduce the risks in the process of LNG storage and transportation and ensure the safe and efficient operation of LNG supply chain. In this paper, LNG receiving terminal and LNG shipping were combined into an LNG whole transportation system, and the connotation of its reliability was clarified. Then, aiming at the problem of insufficient LNG shipping failure data, a reliability simulation model based on the operation mechanism of whole transportation system was established. Finally, the fault tree model for the system of LNG receiving terminal was established and the minimum cut sets were classified to carry out qualitative and quantitative analysis on the reliability of LNG whole transportation system. And accordingly the weak links of the system were determined. Case application verifies the calculation method for the operation feasibility of LNG whole transportation system is feasible and can provide the reference for the safety management and equipment maintenance in the process of LNG shipping and storage at LNG receiving terminals.