Analysis of Effect of Flashing Liquid Jet on Surrounding Instruments during LOCA

When the loss of coolant accident（LOCA） happens in the nuclear power plants,the coolant will be discharged to the low-pressure environment and evaporated immediately,causing damage to the surrounding instruments.The numerical software has been used to establish one-dimensional model for the prediction of possible damage in this severe accident,thus giving some advice for the nuclear power plant layout.The analytical result shows that the shock wave should be seen as a critical line,within which the instrument will be under high pressure,beyond which almost no mechanical damage will be caused.