Experimental Study on Base-triggered Explosions in Molten-tin/Water Systems

概要

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The mechanism of explosions triggered at the bottom of a pool of liquid (i.e., base-triggered explosions) was experimentally investigated by dropping molten into water. We studied the effect of the tin temperature, the water temperature, the water depth, and the distance between the walls at the bottom of the pool on the tendency for explosions to occur. The experimental results showed that base-triggered explosions occurred at the bottom surface of the tank when the water temperature was near its saturation temperature. The occurrence of base-triggered explosions was also affected by the water depth. According to the interaction at the base, the observed explosions could be classified into two types: instantaneous and delayed explosions. The difference between the triggering mechanisms was explained by considering the homogeneous nucleation temperature of the water and the instantaneous interfacial temperature. The occurrence of delayed explosions was also affected by the distance between the side walls at the bottom of the pool. As the bottom surface area decreased, the tendency for base-triggered explosion increased.
一般社団法人日本原子力学会の論文
1999-09-25