高放废液储罐氢气爆炸事故试验研究

Test on hydrogen explosion accident in high level liquid waste tank

高放废液在贮存过程中会产生氢气,若未能及时排出或被稀释,当混合气体中氢气的浓度达到爆炸临界点时,有可能发生爆炸,导致放射性物质释放。本文利用建立的高放废液储罐氢气爆炸事故试验装置,通过试验研究了氢气在储罐内的爆炸压力及壁面温度。测试结果表明,氢气浓度为30%,点火位置在储罐顶部中心附近时,约在点火后70 ms达到最大爆炸压力,最大爆炸超压值约为0.5965 MPa,最高壁面温度约为110℃。

High level liquid waste generates hydrogen gas during storage.If the hydrogen in the high-level liquid waste tank is not discharged or diluted in time,and when the concentration of hydrogen in the mixed gas reaches the explosion threshold,an explosion will possibly occur.In this paper,the explosion pressure and wall temperature of hydrogen in the high-level liquid waste tank are studied by using the experimental device.The test results show that the maximum explosion over-pressure is about 0.5965 MPa,and the maximum wall temperature is about 110℃when the hydrogen concentration is 30%(vol),and the ignition position is near the top center of the tank.