Titanium sponge has been selected as a suitable material for tritium immobilization. The purpose of this paper describes the experimental data which supplies the information for the activation process of the titanium sponge for the storage of tritium. The influences of the different variables, such as activation temperature, time, and pressure, on the hydriding properties of the titanium sponge were investigated. From the experimental results, it was found that 400 ℃ was the minimum activation temperature of the titanium sponge for the hydriding reaction. However, 500 ℃ was selected as the activation temperature of the titanium sponge and the activation procedure, which is now being used for other experiments, which is heating for two hours at 500 ℃ while maintaining a minimum vacuum of 1.0 x 10^-6torr.