RAPID QUENCHING OF MOLTEN LITHIUM ALUMINUM JETS IN WATER

The behavior of melted lithium-aluminum control rod material from the Savannah River K reactor, when contacted with water, was observed expe rimentally at a scale corresponding to hypothesized accident condition s. Although pressure pulses of up to 124 kPa were observed, and water and steam were vigorously expelled from the experimental apparatus, no steam explosion occurred. A number of experiments were performed, in which accident phenomena that might initiate a steam explosion were si mulated, without effect. Some chemical reaction was observed, indicati ng that hydrogen was produced. These experiments were used to establis h the safety of reactor operation in a recent campaign.