Experimental data about pressure-buildup characteristics of a water lump immerged in a molten lead pool from 2020 to 2022.

To understand the pressure-buildup characteristics of a water droplet immerged inside a molten lead pool, which is a key phenomenon during a Steam Generator Tube Rupture accident of Lead-cooled Fast Reactor, many experiments have been conducted by injecting water lumps into a molten lead pool at Sun Yat-sen University from 2020 to 2022. In order to deepen the understanding of the influence of melt material, this lead experiment was compared with a Lead-Bismuth-Eutectic (LBE) experiment in the literature. The parameters employed in the experiments are water volume, water shape, water subcooling, molten pool depth and melt temperature.The interaction vessel in which the CCI occurs is a stainless steel cylindrical container with an inner diameter of 250 mm, a height of 750 mm, and a design pressure of 40 MPa. Many sensors are installed on the interaction vessel wall to obtain the temperature and pressure trends of the melt pool and cover gas.This data set includes the figures as well as the original data for make these figures：1) Figs. 3(b) and 4(b); Two lead cases.2) Figs. 5, 6, 9, and 10; Impact of water's volume, shape, and subcooling.3) Figs. 7, 8 and 11; Impact of melt pool depth, melt temperature, and interaction mechanism.4) Fig. 12. Comparison of melt kinetic energy conversion efficiency.