Dynamic Behavior of LNG Storage Tank During Leakage Conditions

摘要

In order to protect the LNG storage tank’s structural integrity,TCP(Thermal Corner Protection) is installed to hold the cryogenicliquids in the inner tank leakage conditions.How to design and evaluatethe TCP concerns a lot with the safety of LNG tank in accidentalevents.In EN14620 standards,there is no specific rules for the details ofTCP.The former design just concentrated on the static or quasi-staticdesign of TCP.However,the leakage is a dynamic process.It’s verynecessary to check the dynamic behavior of LNG storage tank duringleakage conditions.So dynamic thermal variations are checked in thispaper. To get these results,FEM(Finite Element Method) is used tocalculate the temperature distribution and heat flux.Firstly,thecalculation model is verified by static design based on theoreticalformula.Then dynamic behavior is checked by FEM. This procedurecould make sure that the process of design of TCP and checking ofleakage is a whole one and the way could be extended in the design ofTCP.