The robot was directed to the lower level of the reactor’s containment vessel where the contaminated water used to cool the molten nuclear fuel is located. The high radiation levels have made it nearly impossible to explore the area but the success of this operation can lead to using robots to locate and explore the damage in the No. 2 and 3 reactors, which utility operator Tokyo Electric Power Co (TEPCO) suspect are having similar leaks. The robot, through its camera, was able to capture the image of the water that was leaking from two holes in the vessel. However, they could not determine how much water has already leaked through those holes.