context: Electricity was generated by the nuclear reactor for the first time on September 3, 1948 at the X-10 nuclear graphite reactor in Oak Ridge, Tennessee, USA, where it was the first nuclear power plant to generate a light bulb. The second experiment was on December 20, 1951 in the United States. On June 27, 1954 the world's first nuclear power plant, Obninsk to create electricity to operate the electricity grid in the Soviet Union, was named Obninsk as the first complete power plant in the world. On October 17, 1956 the second station was opened in England. As the world's first full-scale power plant dedicated solely to electricity production. On December 18, 1957 an electrical charging station was created by an atomic power station in the United States connected to the network. [2] [3]
question: When was nuclear nuclear generator used?
answers.text: September 3, 1948