Characteristic experiment of tilting check valve for nuclear power plant(II)

In this study, testing equipment with which several kinds of valves can be tested was composed. Two kinds of tilting check valves and a swing check valve were tested to analyze their dynamic characteristics. The results of the experiment showed that the tilting check valves protected the pump but that swing check valve could not protect the pump when the reverse flow rate was high. Also the dynamic equation of the tilting check valve was formulated and simulated using system characteristic constant tc and one method of predicting tc by comparing the results of the simulation with results of the experiment was proposed. (author)