Destruction of Cryogenic Pressure Vessel and Piping by Shock Wave

Abstract

In recent years, a use for cryogenic fluids as a coolant has been increasing because of the industrial development of low temperature technology. Therefore, the use of the cryogenic pressure vessel and piping become general. LNG-tank, LN2, O2-tank at food factory and medical facilities are given for example. In the cryogenic pressure vessel and piping, reducing the thermal insulation of that by initial small damage, leads to an internal pressure rise and occurring of flashing, and causing secondary crush of pressure vessel and piping also. Then, we conducted the experiment, which imitates crush when the pressure vessel and piping, which were filled with cryogenic temperature fluid, receive a shock wave. The inner pressure time history in such as this situation was measured, and safety of cryogenic pressure vessel and piping was considered.